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Horn SS, Sonesson AK, Krasnov A, Aslam ML, Hillestad B, Ruyter B. Genetic and metabolic characterization of individual differences in liver fat accumulation in Atlantic salmon. Front Genet 2025; 16:1512769. [PMID: 40018642 PMCID: PMC11865213 DOI: 10.3389/fgene.2025.1512769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2024] [Accepted: 01/22/2025] [Indexed: 03/01/2025] Open
Abstract
Introduction Lipid accumulation in the liver can negatively impact liver function and health, which is well-described for humans and other mammals, but relatively unexplored in Atlantic salmon. This study investigates the phenotypic, genetic, and transcriptomic variations related to individual differences in liver fat content within a group of slaughter-sized Atlantic salmon reared under the same conditions and fed the same feed. The objective was to increase the knowledge on liver fat deposition in farmed salmon and evaluate the potential for genetic improvement of this trait. Methods The study involved measuring liver fat content in a group of slaughter-sized Atlantic salmon. Genetic analysis included estimating heritability and conducting genome-wide association studies (GWAS) to identify quantitative trait loci (QTLs). Transcriptomic analysis was performed to link liver fat content to gene expression, focusing on genes involved in lipid metabolic processes. Results There was a large variation in liver fat content, ranging from 3.6% to 18.8%, with frequent occurrences of high liver fat. Livers with higher levels of fat had higher proportions of the fatty acids 16:1 n-7, 18:2 n-6, and 18:1 n-9, and less of the long-chain omega-3 fatty acids. The heritability of liver fat was estimated at 0.38, and the genetic coefficient of variation was 20%, indicating substantial potential for selective breeding to reduce liver fat deposition in Atlantic salmon. Liver fat deposition appears to be a polygenic trait, with no large QTLs detected by GWAS. Gene expression analysis linked liver fat content to numerous genes involved in lipid metabolic processes, including key transcription factors such as LXR, SREBP1, and ChREBP. Discussion The results indicated a connection between liver fat and increased cholesterol synthesis in Atlantic salmon, with potentially harmful free cholesterol accumulation. Further, the gene expression results linked liver fat accumulation to reduced peroxisomal β-oxidation, increased conversion of carbohydrates to lipids, altered phospholipid synthesis, and possibly increased de novo lipogenesis. It is undetermined whether these outcomes are due to high fat levels or if they are caused by underlying metabolic differences that result in higher liver fat levels in certain individuals. Nonetheless, the results provide new insights into the metabolic profile of livers in fish with inherent differences in liver fat content.
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Affiliation(s)
- Siri S. Horn
- Nofima (Norwegian institute of Food, Fisheries and Aquaculture research), Tromsø, Norway
| | - Anna K. Sonesson
- Nofima (Norwegian institute of Food, Fisheries and Aquaculture research), Tromsø, Norway
| | - Aleksei Krasnov
- Nofima (Norwegian institute of Food, Fisheries and Aquaculture research), Tromsø, Norway
| | - Muhammad L. Aslam
- Nofima (Norwegian institute of Food, Fisheries and Aquaculture research), Tromsø, Norway
| | | | - Bente Ruyter
- Nofima (Norwegian institute of Food, Fisheries and Aquaculture research), Tromsø, Norway
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Wang S, Yin J, Liu Z, Liu X, Tian G, Xin X, Qin Y, Feng X. Metabolic disorders, inter-organ crosstalk, and inflammation in the progression of metabolic dysfunction-associated steatotic liver disease. Life Sci 2024; 359:123211. [PMID: 39491769 DOI: 10.1016/j.lfs.2024.123211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 08/20/2024] [Accepted: 10/30/2024] [Indexed: 11/05/2024]
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD) represents a global health concern, affecting over 30 % of adults. It is a principal driver in the development of cirrhosis and hepatocellular carcinoma. The complex pathogenesis of MASLD involves an excessive accumulation of lipids, subsequently disrupting lipid metabolism and prompting inflammation within the liver. This review synthesizes the recent research progress in understanding the mechanisms contributing to MASLD progression, with particular emphasis on metabolic disorders and interorgan crosstalk. We highlight the molecular mechanisms linked to these factors and explore their potential as novel targets for pharmacological intervention. The insights gleaned from this article have important implications for both the prevention and therapeutic management of MASLD.
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Affiliation(s)
- Shendong Wang
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Junhao Yin
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Zhaojun Liu
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Xin Liu
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Ge Tian
- School of Life Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, Shandong 271000, China
| | - Xijian Xin
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Yiming Qin
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China
| | - Xiujing Feng
- Shandong Provincial Key Laboratory for Rheumatic Disease and Translational Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong 250014, China; Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China; School of Clinical and Basic Medical Sciences, Shandong First Medical University& Shandong Academy of Medical Sciences, Jinan 250117, Shandong, China.
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Liu J, Fu Q, Su R, Liu R, Wu S, Li K, Wu J, Zhang N. Association between nontraditional lipid parameters and the risk of type 2 diabetes and prediabetes in patients with nonalcoholic fatty liver disease: from the national health and nutrition examination survey 2017-2020. Front Endocrinol (Lausanne) 2024; 15:1460280. [PMID: 39280011 PMCID: PMC11392789 DOI: 10.3389/fendo.2024.1460280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Accepted: 08/16/2024] [Indexed: 09/18/2024] Open
Abstract
Background Nonalcoholic fatty liver disease (NAFLD) is a prevalent metabolic disorder strongly linked to type 2 diabetes mellitus (T2DM). Understanding the predictive value of lipid parameters in identifying abnormal glucose metabolism in NAFLD patients is crucial for early intervention. Methods This study analyzed data from the National Health and Nutrition Examination Survey(NHANES) database (2017-2020) involving 1066 NAFLD patients. Participants were categorized into three groups: T2DM (n=414), prediabetes mellitus (pre-DM) (n=507), and normoglycemia (NG) (n=145). Traditional lipid parameters [triglycerides (TG) and high-density lipoprotein cholesterol (HDL-C)] and nontraditional lipid parameters [atherogenic index of plasma (AIP), residual cholesterol (RC), and non-high-density lipoprotein cholesterol (non-HDL-C)] were evaluated for their association with T2DM and pre-DM. Results Elevated TG levels were significantly associated with an increased risk of T2DM and pre-DM, whereas high HDL-C demonstrated a protective effect. Among nontraditional lipid parameters, increased AIP and RC were most strongly associated with T2DM risk, while high non-HDL-C was best associated with the development of pre-DM. Stratified analyses revealed that these associations were stronger in younger, non-obese, smoking, and female NAFLD patients. Conclusion Nontraditional lipid parameters, particularly AIP and RC, show superior predictive value over traditional lipid parameters in identifying abnormal glucose metabolism in NAFLD patients. Incorporating these novel biomarkers into clinical practice could enhance early detection and prevention strategies for T2DM and pre-DM in this high-risk population.
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Affiliation(s)
- Jierui Liu
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Qingan Fu
- Cardiovascular Medicine Department, The Second Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, China
| | - Ruolin Su
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Rixiang Liu
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Shisheng Wu
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ke Li
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jianhua Wu
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nuobei Zhang
- Gastroenterology Department, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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Li X, Li M. Unlocking Cholesterol Metabolism in Metabolic-Associated Steatotic Liver Disease: Molecular Targets and Natural Product Interventions. Pharmaceuticals (Basel) 2024; 17:1073. [PMID: 39204178 PMCID: PMC11358954 DOI: 10.3390/ph17081073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2024] [Revised: 08/08/2024] [Accepted: 08/14/2024] [Indexed: 09/03/2024] Open
Abstract
Metabolic-associated steatotic liver disease (MASLD), the hepatic manifestation of metabolic syndrome, represents a growing global health concern. The intricate pathogenesis of MASLD, driven by genetic, metabolic, epigenetic, and environmental factors, leads to considerable clinical variability. Dysregulation of hepatic lipid metabolism, particularly cholesterol homeostasis, is a critical factor in the progression of MASLD and its more severe form, metabolic dysfunction-associated steatohepatitis (MASH). This review elucidates the multifaceted roles of cholesterol metabolism in MASLD, focusing on its absorption, transportation, biosynthesis, efflux, and conversion. We highlight recent advancements in understanding these processes and explore the therapeutic potential of natural products such as curcumin, berberine, and resveratrol in modulating cholesterol metabolism. By targeting key molecular pathways, these natural products offer promising strategies for MASLD management. Finally, this review also covers the clinical studies of natural products in MASLD, providing new insights for future research and clinical applications.
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Affiliation(s)
| | - Meng Li
- Institute of Digestive Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China;
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Li Z, Zheng D, Zhang T, Ruan S, Li N, Yu Y, Peng Y, Wang D. The roles of nuclear receptors in cholesterol metabolism and reverse cholesterol transport in nonalcoholic fatty liver disease. Hepatol Commun 2024; 8:e0343. [PMID: 38099854 PMCID: PMC10727660 DOI: 10.1097/hc9.0000000000000343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Accepted: 10/28/2023] [Indexed: 12/18/2023] Open
Abstract
As the most prevalent chronic liver disease globally, NAFLD encompasses a pathological process that ranges from simple steatosis to NASH, fibrosis, cirrhosis, and HCC, closely associated with numerous extrahepatic diseases. While the initial etiology was believed to be hepatocyte injury caused by lipid toxicity from accumulated triglycerides, recent studies suggest that an imbalance of cholesterol homeostasis is of greater significance. The role of nuclear receptors in regulating liver cholesterol homeostasis has been demonstrated to be crucial. This review summarizes the roles and regulatory mechanisms of nuclear receptors in the 3 main aspects of cholesterol production, excretion, and storage in the liver, as well as their cross talk in reverse cholesterol transport. It is hoped that this review will offer new insights and theoretical foundations for the study of the pathogenesis and progression of NAFLD and provide new research directions for extrahepatic diseases associated with NAFLD.
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Lalloyer F, Mogilenko DA, Verrijken A, Haas JT, Lamazière A, Kouach M, Descat A, Caron S, Vallez E, Derudas B, Gheeraert C, Baugé E, Despres G, Dirinck E, Tailleux A, Dombrowicz D, Van Gaal L, Eeckhoute J, Lefebvre P, Goossens JF, Francque S, Staels B. Roux-en-Y gastric bypass induces hepatic transcriptomic signatures and plasma metabolite changes indicative of improved cholesterol homeostasis. J Hepatol 2023; 79:898-909. [PMID: 37230231 DOI: 10.1016/j.jhep.2023.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 04/18/2023] [Accepted: 05/08/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND & AIMS Roux-en-Y gastric bypass (RYGB), the most effective surgical procedure for weight loss, decreases obesity and ameliorates comorbidities, such as non-alcoholic fatty liver (NAFLD) and cardiovascular (CVD) diseases. Cholesterol is a major CVD risk factor and modulator of NAFLD development, and the liver tightly controls its metabolism. How RYGB surgery modulates systemic and hepatic cholesterol metabolism is still unclear. METHODS We studied the hepatic transcriptome of 26 patients with obesity but not diabetes before and 1 year after undergoing RYGB. In parallel, we measured quantitative changes in plasma cholesterol metabolites and bile acids (BAs). RESULTS RYGB surgery improved systemic cholesterol metabolism and increased plasma total and primary BA levels. Transcriptomic analysis revealed specific alterations in the liver after RYGB, with the downregulation of a module of genes implicated in inflammation and the upregulation of three modules, one associated with BA metabolism. A dedicated analysis of hepatic genes related to cholesterol homeostasis pointed towards increased biliary cholesterol elimination after RYGB, associated with enhancement of the alternate, but not the classical, BA synthesis pathway. In parallel, alterations in the expression of genes involved in cholesterol uptake and intracellular trafficking indicate improved hepatic free cholesterol handling. Finally, RYGB decreased plasma markers of cholesterol synthesis, which correlated with an improvement in liver disease status after surgery. CONCLUSIONS Our results identify specific regulatory effects of RYGB on inflammation and cholesterol metabolism. RYGB alters the hepatic transcriptome signature, likely improving liver cholesterol homeostasis. These gene regulatory effects are reflected by systemic post-surgery changes of cholesterol-related metabolites, corroborating the beneficial effects of RYGB on both hepatic and systemic cholesterol homeostasis. IMPACT AND IMPLICATIONS Roux-en-Y gastric bypass (RYGB) is a widely used bariatric surgery procedure with proven efficacy in body weight management, combatting cardiovascular disease (CVD) and non-alcoholic fatty liver disease (NAFLD). RYGB exerts many beneficial metabolic effects, by lowering plasma cholesterol and improving atherogenic dyslipidemia. Using a cohort of patients undergoing RYGB, studied before and 1 year after surgery, we analyzed how RYGB modulates hepatic and systemic cholesterol and bile acid metabolism. The results of our study provide important insights on the regulation of cholesterol homeostasis after RYGB and open avenues that could guide future monitoring and treatment strategies targeting CVD and NAFLD in obesity.
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Affiliation(s)
- Fanny Lalloyer
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Denis A Mogilenko
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France; Department of Medicine, Department of Pathology, Microbiology and Immunology, Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Ann Verrijken
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, 2610, Wilrijk, Antwerp, Belgium; Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, 2650, Edegem, Antwerp, Belgium
| | - Joel T Haas
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Antonin Lamazière
- Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint Antoine, Clinical Metabolomic Department, Sorbonne Université, Inserm, F-75012, Paris, France
| | - Mostafa Kouach
- University of Lille, CHU Lille, EA 7365-GRITA-Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France
| | - Amandine Descat
- University of Lille, CHU Lille, EA 7365-GRITA-Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France
| | - Sandrine Caron
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Emmanuelle Vallez
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Bruno Derudas
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Céline Gheeraert
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Eric Baugé
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Gaëtan Despres
- Centre de Recherche Saint-Antoine, CRSA, AP-HP, Hôpital Saint Antoine, Clinical Metabolomic Department, Sorbonne Université, Inserm, F-75012, Paris, France
| | - Eveline Dirinck
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, 2610, Wilrijk, Antwerp, Belgium; Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, 2650, Edegem, Antwerp, Belgium
| | - Anne Tailleux
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - David Dombrowicz
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Luc Van Gaal
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, 2610, Wilrijk, Antwerp, Belgium; Department of Endocrinology, Diabetology and Metabolism, Antwerp University Hospital, 2650, Edegem, Antwerp, Belgium
| | - Jerôme Eeckhoute
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Philippe Lefebvre
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France
| | - Jean-François Goossens
- University of Lille, CHU Lille, EA 7365-GRITA-Groupe de Recherche sur les formes Injectables et les Technologies Associées, F-59000, Lille, France
| | - Sven Francque
- Laboratory of Experimental Medicine and Pediatrics, Faculty of Medicine and Health Sciences, University of Antwerp, 2610, Wilrijk, Antwerp, Belgium; Department of Gastroenterology and Hepatology, Antwerp University Hospital, ERN RARE-LIVER, 2650, Edegem, Antwerp, Belgium
| | - Bart Staels
- University of Lille, Inserm, CHU Lille, Institut Pasteur de Lille, U1011- EGID, F-59000, Lille, France.
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Guan B, Wang A, Xu H. Causal associations of remnant cholesterol with cardiometabolic diseases and risk factors: a mendelian randomization analysis. Cardiovasc Diabetol 2023; 22:207. [PMID: 37563569 PMCID: PMC10416527 DOI: 10.1186/s12933-023-01927-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 07/19/2023] [Indexed: 08/12/2023] Open
Abstract
BACKGROUND Emerging evidence suggests that remnant cholesterol (RC) is strongly associated with an increased incidence of cardiometabolic diseases (CMD). However, the causality have not been confirmed. We aimed to evaluate the causal associations of RC with CMD and the relative risk factors using two-sample Mendelian randomization (MR) methods. METHODS Summary-level statistics of RC, CMD, and cardiometabolic risk factors were obtained from the published data from individuals with a predominantly European ancestry mainly from the UK Biobank and the FinnGen biobank. Univariable and multivariable MR analyses were used to evaluate the causal relationships between RC and CMD. A bidirectional MR analysis was performed to estimate the causality between RC and cardiometabolic risk factors. The main MR method was conducted using the inverse-variance weighted method. RESULTS Univariable MR analyses showed that genetically predicted RC was causally associated with higher risk of ischemic heart disease, myocardial infarction, atrial fibrillation and flutter, peripheral artery disease, and non-rheumatic valve diseases (all P < 0.05). Multivariable MR analyses provided compelling evidence of the harmful effects of RC on the risk of ischemic heart disease (P < 0.05). Bidirectional MR analysis demonstrated that RC was bidirectionally causally linked to total cholesterol, triglycerides, low-density lipoprotein cholesterol, hypercholesterolemia (all P < 0.05). However, no genetic association was found between RC and metabolic disorders or the other cardiometabolic risk factors. CONCLUSIONS This MR study demonstrates that genetically driven RC increases the risk of several CMD and cardiometabolic risk factors, suggesting that targeted RC-lowering therapies may be effective for the primary prevention of CMD.
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Affiliation(s)
- Baoyi Guan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, 100091, Beijing, China
- National Clinical Research Center for Chinese Medicine Cardiology, 100091, Beijing, China
| | - Anlu Wang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, 100091, Beijing, China.
- National Clinical Research Center for Chinese Medicine Cardiology, 100091, Beijing, China.
| | - Hao Xu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, 100091, Beijing, China.
- National Clinical Research Center for Chinese Medicine Cardiology, 100091, Beijing, China.
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Zhao J, Lee K, Toh HC, Lam KP, Neo SY. Unravelling the role of obesity and lipids during tumor progression. Front Pharmacol 2023; 14:1163160. [PMID: 37063269 PMCID: PMC10097918 DOI: 10.3389/fphar.2023.1163160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 03/16/2023] [Indexed: 04/03/2023] Open
Abstract
The dysregulation of the biochemical pathways in cancer promotes oncogenic transformations and metastatic potential. Recent studies have shed light on how obesity and altered lipid metabolism could be the driving force for tumor progression. Here, in this review, we focus on liver cancer and discuss how obesity and lipid-driven metabolic reprogramming affect tumor, immune, and stroma cells in the tumor microenvironment and, in turn, how alterations in these cells synergize to influence and contribute to tumor growth and dissemination. With increasing evidence on how obesity exacerbates inflammation and immune tolerance, we also touch upon the impact of obesity and altered lipid metabolism on tumor immune escape.
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Affiliation(s)
- Junzhe Zhao
- Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Keene Lee
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Han Chong Toh
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - Kong Peng Lam
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Shi Yong Neo
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Department of Oncology and Pathology, Karolinska Institute, Solna, Sweden
- *Correspondence: Shi Yong Neo,
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Barboza TK, Susta L, zur Linden A, Gardhouse S, Beaufrère H. Association of plasma metabolites and diagnostic imaging findings with hepatic lipidosis in bearded dragons (Pogona vitticeps) and effects of gemfibrozil therapy. PLoS One 2023; 18:e0274060. [PMID: 36735707 PMCID: PMC9897564 DOI: 10.1371/journal.pone.0274060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 08/21/2022] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVES To evaluate the association between plasma metabolites, biochemical analytes, diagnostic imaging findings, and the histologic diagnosis of hepatic lipidosis in bearded dragons. To assess the effects of gemfibrozil therapy on hepatic lipid accumulation and associated diagnostic tests. ANIMALS Fourteen bearded dragons (Pogona vitticeps) with varying severity of hepatic lipid accumulation (with and without hepatic lipidosis) were included. PROCEDURES Animals underwent coelomic ultrasound, computed tomography (CT) scans, and coelioscopic hepatic biopsies. Clinical pathology tests included lipidologic tests, hepatic biomarkers, and mass spectrometry-based metabolomics. Animals were medicated with gemfibrozil 6mg/kg orally once a day for 2 months in a randomized blinded clinical trial prior to repeating previous diagnostic testing. RESULTS Hounsfield units on CT were negatively associated with increased hepatic vacuolation, while ultrasound and gross evaluation of the liver were not reliable. Beta-hydroxybutyric-acid (BHBA) concentrations were significantly associated with hepatic lipidosis. Metabolomics and lipidomics data found BHBA and succinic acid to be potential biomarkers for diagnosing hepatic lipidosis in bearded dragons. Succinic acid concentrations were significantly lower in the gemfibrozil treatment group. There was a tendency for improvement in the biomarkers and reduced hepatic fat in bearded dragons with hepatic lipidosis when treated with gemfibrozil, though the improvement was not statistically significant. CONCLUSIONS These findings provide information on the antemortem assessment of hepatic lipidosis in bearded dragons and paves the way for further research in diagnosis and treatment of this disease.
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Affiliation(s)
- Trinita K. Barboza
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Leonardo Susta
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Alex zur Linden
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Sara Gardhouse
- Health Sciences Center, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Hugues Beaufrère
- Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Shim SY, Jung SJ, Kim SU, Kim HC. Ideal cardiovascular health metrics and the risk of nonalcoholic fatty liver disease in Korean adults. Clin Hypertens 2023; 29:3. [PMID: 36641485 PMCID: PMC9840828 DOI: 10.1186/s40885-022-00227-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/26/2022] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The association between cardiovascular risk factors and nonalcoholic fatty liver disease (NAFLD) is well established, but whether cardiovascular health (CVH) metrics is associated with NAFLD had not been fully studied. Thus, we examined the association between CVH metrics and NAFLD in the middle-aged Korean population. METHODS We used data of 2,928 (851 men and 2,077 women) participants aged 30-64 years from the Cardiovascular and Metabolic Disease Etiology Research Center study. CVH metrics were measured using a modified version of Life's Simple 7 by the American Heart Association. NAFLD diagnosis was based on the fatty liver index or liver-to-spleen ratio on computed tomography. A multiple logistic regression model was used to investigate the cross-sectional and longitudinal associations between CVH metrics and NAFLD. RESULTS In the cross-sectional analysis, the odds ratio for NAFLD was lower in participants with ideal CVH (odds ratio [OR], 0.13; 95% confidence interval [CI], 0.08-0.18), while it was higher in individuals with poor CVH (OR, 2.87; 95% CI, 2.13-3.86). Similarly, the risk of new-onset NAFLD was lower in participants with ideal CVH (OR, 0.28; 95% CI, 0.11-0.74), and higher in individuals with poor CVH (OR, 2.20; 95% CI, 0.50-9.72) in the longitudinal analysis of a subgroup. CONCLUSIONS Ideal CVH was associated with a lower risk of NAFLD while poor CVH was associated with a higher risk of NAFLD. These findings suggest that making efforts to encourage people to manage their CVH to the ideal level may prevent and manage NAFLD.
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Affiliation(s)
- Sun Young Shim
- College of Nursing, Yonsei University, Seoul, Republic of Korea
| | - Sun Jae Jung
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seung Up Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyeon Chang Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
- Institute for Innovation in Digital Healthcare, Yonsei University Health System, Seoul, Republic of Korea.
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Potential Role of Oxidative Stress in the Production of Volatile Organic Compounds in Obesity. Antioxidants (Basel) 2023; 12:antiox12010129. [PMID: 36670991 PMCID: PMC9854577 DOI: 10.3390/antiox12010129] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/06/2023] Open
Abstract
Obesity is associated with numerous health issues such as sleep disorders, asthma, hepatic dysfunction, cancer, renal dysfunction, diabetes, cardiovascular complications, and infertility. Previous research has shown that the distribution of excess body fat, rather than excess body weight, determines obesity-related risk factors. It is widely accepted that abdominal fat is a serious risk factor for illnesses associated with obesity and the accumulation of visceral fat promotes the release of pro-oxidants, pro-inflammatory, and reactive oxygen species (ROS). The metabolic process in the human body produces several volatile organic compounds (VOCs) via urine, saliva, breath, blood, skin secretions, milk, and feces. Several studies have shown that VOCs are released by the interaction of ROS with underlying cellular components leading to increased protein oxidation, lipid peroxidation, or DNA damage. These VOCs released via oxidative stress in obese individuals may serves as a biomarker for obesity-related metabolic alterations and disease. In this review, we focus on the relationship between oxidative stress and VOCs in obesity.
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12
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Pan J, Li Q, Sun Y, Gu Y, Ding Y, Pang N, Zhou Y, Pei L, Gao M, Ma S, Xiao Y, Wu F, Hu D, Chen YM, Yang L. Increased Serum Adipsin Correlates with MAFLD and Metabolic Risk Abnormalities. Diabetes Metab Syndr Obes 2023; 16:187-200. [PMID: 36760590 PMCID: PMC9882414 DOI: 10.2147/dmso.s396335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 01/10/2023] [Indexed: 01/24/2023] Open
Abstract
PURPOSE A panel of international experts proposed a new definition of fatty liver in 2020, namely metabolic dysfunction-associated fatty liver disease (MAFLD). As an adipokine, adipsin is closely related to metabolic-related diseases. In this study, we aimed to evaluate the relationship among MAFLD, serum adipsin, and metabolic risk abnormalities. METHODS Our study was a cross-sectional study based on the first follow-up of the Guangzhou Nutrition and Health Study (GNHS). A total of 908 patients with hepatic steatosis were involved in our study. Detailed data of patients were collected based upon questionnaire information, physical examination, and blood biochemical test. RESULTS Among the 908 patients, 789 patients were diagnosed with MAFLD. The levels of serum adipsin in the MAFLD group and non-MAFLD group were (3543.00 (3187.94-3972.50) ng/mL) and (3095.33 (2778.71-3354.77) ng/mL) (P < 0.001), respectively. After adjusting for potential confounders, adipsin levels were found to be associated with MAFLD. The OR was 3.46 (95% CI: 1.57-7.64) for adipsin when comparing subjects in the highest tertile with those in the lowest tertile. With the increase in the number of metabolic risk abnormalities, both the levels of serum adipsin and the proportion of moderate to severe fatty liver increased (all p-trend < 0.001). CONCLUSION Increased serum adipsin correlates with MAFLD. Both adipsin levels as well as fatty liver severity increase with higher numbers of metabolic risk abnormalities.
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Affiliation(s)
- Jie Pan
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Qiuyan Li
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yan Sun
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yingying Gu
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yijie Ding
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Nengzhi Pang
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yujia Zhou
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Lei Pei
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Mengqi Gao
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Sixi Ma
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Ying Xiao
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Feilong Wu
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - De Hu
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Yu-Ming Chen
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Lili Yang
- Department of Nutrition, Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, People’s Republic of China
- Correspondence: Lili Yang, Department of Nutrition, School of Public Health, Sun Yat-sen University, No. 74, Zhongshan Road 2, Yuexiu District, Guangzhou, Guangdong, 510080, People’s Republic of China, Tel +86-20-87330625, Email
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13
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Duan Y, Gong K, Xu S, Zhang F, Meng X, Han J. Regulation of cholesterol homeostasis in health and diseases: from mechanisms to targeted therapeutics. Signal Transduct Target Ther 2022; 7:265. [PMID: 35918332 PMCID: PMC9344793 DOI: 10.1038/s41392-022-01125-5] [Citation(s) in RCA: 168] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 12/13/2022] Open
Abstract
Disturbed cholesterol homeostasis plays critical roles in the development of multiple diseases, such as cardiovascular diseases (CVD), neurodegenerative diseases and cancers, particularly the CVD in which the accumulation of lipids (mainly the cholesteryl esters) within macrophage/foam cells underneath the endothelial layer drives the formation of atherosclerotic lesions eventually. More and more studies have shown that lowering cholesterol level, especially low-density lipoprotein cholesterol level, protects cardiovascular system and prevents cardiovascular events effectively. Maintaining cholesterol homeostasis is determined by cholesterol biosynthesis, uptake, efflux, transport, storage, utilization, and/or excretion. All the processes should be precisely controlled by the multiple regulatory pathways. Based on the regulation of cholesterol homeostasis, many interventions have been developed to lower cholesterol by inhibiting cholesterol biosynthesis and uptake or enhancing cholesterol utilization and excretion. Herein, we summarize the historical review and research events, the current understandings of the molecular pathways playing key roles in regulating cholesterol homeostasis, and the cholesterol-lowering interventions in clinics or in preclinical studies as well as new cholesterol-lowering targets and their clinical advances. More importantly, we review and discuss the benefits of those interventions for the treatment of multiple diseases including atherosclerotic cardiovascular diseases, obesity, diabetes, nonalcoholic fatty liver disease, cancer, neurodegenerative diseases, osteoporosis and virus infection.
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Affiliation(s)
- Yajun Duan
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.,Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Ke Gong
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Suowen Xu
- Department of Cardiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Feng Zhang
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Xianshe Meng
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China
| | - Jihong Han
- Key Laboratory of Metabolism and Regulation for Major Diseases of Anhui Higher Education Institutes, College of Food and Biological Engineering, Hefei University of Technology, Hefei, China. .,College of Life Sciences, Key Laboratory of Bioactive Materials of Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, China.
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14
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Tan Y, Zhang X, Zhou Y, Miao L, Xu B, Khan H, Wang Y, Yu H, Cheang WS. Panax notoginseng extract and total saponin suppress diet-induced obesity and endoplasmic reticulum stress in epididymal white adipose tissue in mice. Chin Med 2022; 17:75. [PMID: 35718787 PMCID: PMC9208151 DOI: 10.1186/s13020-022-00629-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 06/02/2022] [Indexed: 11/10/2022] Open
Abstract
Background Investigation on protective effects of Panax notoginseng against obesity and its related mechanisms is incomplete. Present study aimed to investigate the potential anti-obesity effect of the total saponins (PNS) and ethanolic extract of P. notoginseng (PNE). Methods Six-week-old male C57BL/6J mice received 45% kcal fat diet for 12 weeks to induce obesity. Oral administration of PNS and PNE at 20 mg/kg/day was applied for the last 4 weeks in the obese mice. Lipid profile was determined by ELISA. Histological examination was performed in liver and fat tissues. Protein levels were measured by Western blot. Results PNS and PNE did not cause weight loss. PNE but not PNS decreased the mass of epididymal and retroperitoneal white adipose tissue, accompanied by a reduction in adipocyte hypertrophy. PNS and PNE improved lipid profile by reducing the concentrations of triglyceride, total cholesterol and low-density lipoprotein cholesterol in plasma or liver samples. PNS and PNE also relieved fatty liver in obese mice. PNS and PNE inhibited expression and phosphorylation of endoplasmic reticulum (ER) stress-responsive proteins in hypertrophic adipose tissue. Conclusions PNS and PNE can regulate ER stress-mediated apoptosis and inflammation to alleviate obesity.
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Affiliation(s)
- Yi Tan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Xutao Zhang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Yan Zhou
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Lingchao Miao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Baojun Xu
- Food Science and Technology Program, BNU-HKBU United International College, Guangdong, 519087, Zhuhai, China
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, 23200, Pakistan
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Hua Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Wai San Cheang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China.
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15
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Imenshahidi M, Hossenzadeh H. Effects of glycine on metabolic syndrome components: a review. J Endocrinol Invest 2022; 45:927-939. [PMID: 35013990 DOI: 10.1007/s40618-021-01720-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/03/2021] [Indexed: 12/27/2022]
Abstract
PURPOSE Glycine is the simplest and major amino acid in humans. It is mainly generated in the liver and kidney and is used to produce collagen, creatine, glucose and purine. It is also involved in immune function, anti-inflammatory processes and anti-oxidation reactions. Here, we reviewed the current evidence supporting the role of glycine in the development and treatment of metabolic syndrome components. METHODS We searched Scopus, PubMed and EMBASE databases for papers concerning glycine and metabolic syndrome. RESULTS Available evidence shows that the amount of glycine synthesized in vivo is insufficient to meet metabolic demands in these species. Plasma glycine levels are lower in subjects with metabolic syndrome than in healthy individuals. Interventions such as lifestyle modification, exercise, weight loss, or drugs that improve manifestations of metabolic syndrome remarkably increase circulating glycine concentrations. CONCLUSION Glycine supplementation improves various components of metabolic syndrome including diabetes, obesity, hyperlipidemia and hypertension. In the future, the use of glycine may have a significant clinical impact on the treatment of patients with metabolic syndrome.
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Affiliation(s)
- M Imenshahidi
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - H Hossenzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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16
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Zhang S, Cheng S, He X, Wang W, Yun K, Man D, Ding H, Li P, Chu Z, Yang X, Shang H, Han X. Remnant Lipoprotein Cholesterol as a Factor Related to Adult Fatty Liver Disease. J Clin Endocrinol Metab 2022; 107:e1598-e1609. [PMID: 34875070 DOI: 10.1210/clinem/dgab825] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Indexed: 12/25/2022]
Abstract
CONTEXT Dyslipidemia is related to fatty liver disease (FLD), whose relationship with remnant lipoprotein cholesterol (RLP-C), a component of blood lipids, remains unclear. OBJECTIVE To clarify the correlation between RLP-C and the occurrence and severity of FLD and establish an FLD discriminant model based on health check indicators. METHODS Retrospective study of participants who underwent health check-up in the First Affiliated Hospital of China Medical University (Shenyang, China) between January and December 2019. We categorized participants according to liver ultrasound results and analyzed the correlation between RLP-C and occurrence of FLD (n = 38 885) through logistic regression, restricted cubic spline, and receiver operating characteristic curve. We categorized the severity of FLD according to the control attenuation parameter and analyzed the correlation between RLP-C and FLD severity through multiple logistic regression; only males were included (n = 564). RESULTS The adjusted OR (aOR) per SD between RLP-C and FLD was 2.33 (95% CI 2.21-2.46, P < .001), indicating a dose-response relationship (P < .0001). The optimal cut-off value of RLP-C was 0.45 mmol/L and the area under the curve (AUC) was 0.79. The AUC of the 8-variable model was 0.89 in both the training and the validation sets. FLD severity was related to the level of RLP-C (aOR per SD = 1.29, 95% CI 1.07-1.55, P = .008). CONCLUSION RLP-C has a strong positive correlation with FLD occurrence and FLD severity. These results may help clinicians identify and implement interventions in individuals with high FLD risk and reduce FLD prevalence.
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Affiliation(s)
- Shuang Zhang
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
| | - Shitong Cheng
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xue He
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Wei Wang
- Medical examination center, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Ke Yun
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
| | - Dongliang Man
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Haibo Ding
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
| | - Ping Li
- Department of ultrasound, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhenxing Chu
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
| | - Xiaotao Yang
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Hong Shang
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
| | - Xiaoxu Han
- National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, China
- Department of Laboratory Medicine, the First Affiliated Hospital of China Medical University, Shenyang, China
- Units of Medical Laboratory, Chinese Academy of Medical Sciences, Shenyang, China
- NHC Key Laboratory of AIDS Immunology (China Medical University), Shenyang, China
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17
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Nunes VS, da Silva Ferreira G, Quintão ECR. Cholesterol metabolism in aging simultaneously altered in liver and nervous system. Aging (Albany NY) 2022; 14:1549-1561. [PMID: 35130181 PMCID: PMC8876915 DOI: 10.18632/aging.203880] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/08/2021] [Indexed: 11/25/2022]
Abstract
In humans, aging, triggers increased plasma concentrations of triglycerides, cholesterol, low-density lipoproteins and lower capacity of high-density lipoproteins to remove cellular cholesterol. Studies in rodents showed that aging led to cholesterol accumulation in the liver and decrease in the brain with reduced cholesterol synthesis and increased levels of cholesterol 24-hydroxylase, an enzyme responsible for removing cholesterol from the brain. Liver diseases are also related to brain aging, inducing changes in cholesterol metabolism in the brain and liver of rats. It has been suggested that late onset Alzheimer's disease is associated with metabolic syndrome. Non-alcoholic fatty liver is associated with lower total brain volume in the Framingham Heart Study offspring cohort study. Furthermore, disorders of cholesterol homeostasis in the adult brain are associated with neurological diseases such as Niemann-Pick, Alzheimer, Parkinson, Huntington and epilepsy. Apolipoprotein E (apoE) is important in transporting cholesterol from astrocytes to neurons in the etiology of sporadic Alzheimer's disease, an aging-related dementia. Desmosterol and 24S-hydroxycholesterol are reduced in ApoE KO hypercholesterolemic mice. ApoE KO mice have synaptic loss, cognitive dysfunction, and elevated plasma lipid levels that can affect brain function. In contrast to cholesterol itself, there is a continuous uptake of 27- hydroxycholesterol in the brain as it crosses the blood-brain barrier and this flow can be an important link between intra- and extracerebral cholesterol homeostasis. Not surprisingly, changes in cholesterol metabolism occur simultaneously in the liver and nervous tissues and may be considered possible biomarkers of the liver and nervous system aging.
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Affiliation(s)
- Valéria Sutti Nunes
- Laboratorio de Lipides (LIM10), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Bazil
| | - Guilherme da Silva Ferreira
- Laboratorio de Lipides (LIM10), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Bazil
| | - Eder Carlos Rocha Quintão
- Laboratorio de Lipides (LIM10), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Bazil
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Babu AF, Koistinen VM, Turunen S, Solano-Aguilar G, Urban JF, Zarei I, Hanhineva K. Identification and Distribution of Sterols, Bile Acids, and Acylcarnitines by LC-MS/MS in Humans, Mice, and Pigs-A Qualitative Analysis. Metabolites 2022; 12:metabo12010049. [PMID: 35050171 PMCID: PMC8781580 DOI: 10.3390/metabo12010049] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 12/28/2022] Open
Abstract
Sterols, bile acids, and acylcarnitines are key players in human metabolism. Precise annotations of these metabolites with mass spectrometry analytics are challenging because of the presence of several isomers and stereoisomers, variability in ionization, and their relatively low concentrations in biological samples. Herein, we present a sensitive and simple qualitative LC–MS/MS (liquid chromatography with tandem mass spectrometry) method by utilizing a set of pure chemical standards to facilitate the identification and distribution of sterols, bile acids, and acylcarnitines in biological samples including human stool and plasma; mouse ileum, cecum, jejunum content, duodenum content, and liver; and pig bile, proximal colon, cecum, heart, stool, and liver. With this method, we detected 24 sterol, 32 bile acid, and 27 acylcarnitine standards in one analysis that were separated within 13 min by reversed-phase chromatography. Further, we observed different sterol, bile acid, and acylcarnitine profiles for the different biological samples across the different species. The simultaneous detection and annotation of sterols, bile acids, and acylcarnitines from reference standards and biological samples with high precision represents a valuable tool for screening these metabolites in routine scientific research.
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Affiliation(s)
- Ambrin Farizah Babu
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, 70210 Kuopio, Finland; (V.M.K.); (I.Z.); (K.H.)
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland;
- Correspondence: ; Tel.: +358-45-20-30-433
| | - Ville Mikael Koistinen
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, 70210 Kuopio, Finland; (V.M.K.); (I.Z.); (K.H.)
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland;
- Department of Biochemistry, Food Chemistry and Food Development Unit, University of Turku, 20014 Turku, Finland
| | - Soile Turunen
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland;
- School of Pharmacy, University of Eastern Finland, 70210 Kuopio, Finland
| | - Gloria Solano-Aguilar
- U.S. Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Human Nutrition Research Center, Diet Genomics and Immunology Laboratory, Beltsville, MD 20705, USA; (G.S.-A.); (J.F.U.J.)
| | - Joseph F. Urban
- U.S. Department of Agriculture, Agricultural Research Service, Northeast Area, Beltsville Human Nutrition Research Center, Diet Genomics and Immunology Laboratory, Beltsville, MD 20705, USA; (G.S.-A.); (J.F.U.J.)
| | - Iman Zarei
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, 70210 Kuopio, Finland; (V.M.K.); (I.Z.); (K.H.)
| | - Kati Hanhineva
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, 70210 Kuopio, Finland; (V.M.K.); (I.Z.); (K.H.)
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland;
- Department of Biochemistry, Food Chemistry and Food Development Unit, University of Turku, 20014 Turku, Finland
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Casey T, Suarez-Trujillo AM, McCabe C, Beckett L, Klopp R, Brito L, Rocha Malacco VM, Hilger S, Donkin SS, Boerman J, Plaut K. Transcriptome analysis reveals disruption of circadian rhythms in late gestation dairy cows may increase risk for fatty liver and reduced mammary remodeling. Physiol Genomics 2021; 53:441-455. [PMID: 34643103 DOI: 10.1152/physiolgenomics.00028.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Circadian disruption increased insulin resistance and decreased mammary development in late gestation, nonlactating (dry) cows. The objective was to measure the effect of circadian disruption on transcriptomes of the liver and mammary gland. At 35 days before expected calving (BEC), multiparous dry cows were assigned to either control (CON) or phase-shifted treatments (PS). CON was exposed to 16-h light and 8-h dark. PS was exposed to 16-h light to 8-h dark, but phase of the light-dark cycle was shifted 6 h every 3 days. On day 21 BEC, liver and mammary were biopsied. RNA was isolated (n = 6 CON, n = 6 PS per tissue), and libraries were prepared and sequenced using paired-end reads. Reads mapping to bovine genome averaged 27 ± 2 million and aligned to 14,222 protein-coding genes in liver and 15,480 in mammary analysis. In the liver, 834 genes, and in the mammary gland, 862 genes were different (nominal P < 0.05) between PS and CON. In the liver, genes upregulated in PS functioned in cholesterol biosynthesis, endoplasmic reticulum stress, wound healing, and inflammation. Genes downregulated in liver function in cholesterol efflux. In the mammary gland, genes upregulated functioned in mRNA processing and transcription and downregulated genes encoded extracellular matrix proteins and proteases, cathepsins and lysosomal proteases, lipid transporters, and regulated oxidative phosphorylation. Increased cholesterol synthesis and decreased efflux suggest that circadian disruption potentially increases the risk of fatty liver in cows. Decreased remodeling and lipid transport in mammary may decrease milk production capacity during lactation.
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Affiliation(s)
- Theresa Casey
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | | | - Conor McCabe
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Linda Beckett
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Rebecca Klopp
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Luiz Brito
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | | | - Susan Hilger
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Shawn S Donkin
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Jacquelyn Boerman
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
| | - Karen Plaut
- Department of Animal Sciences, Purdue University, West Lafayette, Indiana
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20
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Zhang Y, Hu X, Chang J, Chen J, Han X, Zhang T, Shen J, Shang N, Han J, Wang H, Kang W, Meng F. The liver steatosis severity and lipid characteristics in primary biliary cholangitis. BMC Gastroenterol 2021; 21:395. [PMID: 34686147 PMCID: PMC8532358 DOI: 10.1186/s12876-021-01974-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 10/11/2021] [Indexed: 12/16/2022] Open
Abstract
Background Patients with primary biliary cholangitis (PBC) often have comorbid dyslipidemia, and determining the degree of hepatic steatosis can help predict the risk of cardiovascular events in PBC patients. The aim of our study was to analyze the characteristics of lipid distribution and the degree of hepatic steatosis in PBC. Methods We retrospectively analyzed 479 cases of PBC, chronic hepatitis B (CHB), chronic hepatitis C (CHC), non-alcoholic fatty liver disease (NAFLD), and healthy subjects (Normal) diagnosed by liver biopsy or definitive clinical diagnosis. Controlled attenuation parameter (CAP) values were applied to assess the degree of steatosis of the liver, and lipid levels were also compared in the five cohorts. Results We found that among the five groups of subjects, the PBC group had the lowest CAP values (P < 0.001), and the high-density lipoprotein cholesterol (HDL-C) level in the PBC group was higher than normal, CHC and CHB group (P = 0.004, P = 0.033, P < 0.001, respectively).In the multivariate linear analysis, only BMI (β = 1.280, P = 0.028), ALP (β = − 0.064, P = 0.012), TBA (β = − 0.126, P = 0.020), TG (β = 12.520, P = 0.000), HDL-C (β = − 11.338, P = 0.001) and LDL-C (β = 7.012, P = 0.002) were independent predictors of CAP. Conclusions Among PBC, CHB, CHC, NAFLD and healthy subjects, PBC had the lowest degree of hepatic steatosis and higher HDL-C levels, all of which were found to be protective factors against atherosclerosis and cardiovascular risk and would provide a valuable reference for the risk of developing cardiovascular events in PBC patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12876-021-01974-4.
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Affiliation(s)
- Yuan Zhang
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Xing Hu
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Jing Chang
- Capital Medical University, Beijing, China
| | - Jie Chen
- Hepatology Immunology Department, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Xue Han
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Tieying Zhang
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Jianjun Shen
- Function Diagnosis Department, Handan Infectious Disease Hospital, Handan, China
| | - Ning Shang
- Function Diagnosis Department, Handan Infectious Disease Hospital, Handan, China
| | - Jing Han
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China
| | - Hui Wang
- Infection Center Department, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Weiwei Kang
- Hepatology and Nephrology Department, Beijing You'an Hospital, Capital Medical University, Beijing, China
| | - Fankun Meng
- Capital Medical University, No 8, Xitoutiao, Youanmenwai, Fengtai District, Beijing, 100069, China.
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21
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Babu AF, Csader S, Lok J, Gómez-Gallego C, Hanhineva K, El-Nezami H, Schwab U. Positive Effects of Exercise Intervention without Weight Loss and Dietary Changes in NAFLD-Related Clinical Parameters: A Systematic Review and Meta-Analysis. Nutrients 2021; 13:nu13093135. [PMID: 34579012 PMCID: PMC8466505 DOI: 10.3390/nu13093135] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/05/2021] [Accepted: 09/05/2021] [Indexed: 12/13/2022] Open
Abstract
One of the focuses of non-alcoholic fatty liver disease (NAFLD) treatment is exercise. Randomized controlled trials investigating the effects of exercise without dietary changes on NAFLD-related clinical parameters (liver parameters, lipid metabolism, glucose metabolism, gut microbiota, and metabolites) were screened using the PubMed, Scopus, Web of Science, and Cochrane databases on 13 February 2020. Meta-analyses were performed on 10 studies with 316 individuals who had NAFLD across three exercise regimens: aerobic exercise, resistance training, and a combination of both. No studies investigating the role of gut microbiota and exercise in NAFLD were found. A quality assessment via the (RoB)2 tool was conducted and potential publication bias, statistical outliers, and influential cases were identified. Overall, exercise without significant weight loss significantly reduced the intrahepatic lipid (IHL) content (SMD: −0.76, 95% CI: −1.04, −0.48) and concentrations of alanine aminotransaminase (ALT) (SMD: −0.52, 95% CI: −0.90, −0.14), aspartate aminotransaminase (AST) (SMD: −0.68, 95% CI: −1.21, −0.15), low-density lipoprotein cholesterol (SMD: −0.34, 95% CI: −0.66, −0.02), and triglycerides (TG) (SMD: −0.59, 95% CI: −1.16, −0.02). The concentrations of high-density lipoprotein cholesterol, total cholesterol (TC), fasting glucose, fasting insulin, and glycated hemoglobin were non-significantly altered. Aerobic exercise alone significantly reduced IHL, ALT, and AST; resistance training alone significantly reduced TC and TG; a combination of both exercise types significantly reduced IHL. To conclude, exercise overall likely had a beneficial effect on alleviating NAFLD without significant weight loss. The study was registered at PROSPERO: CRD42020221168 and funded by the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement no. 813781.
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Affiliation(s)
- Ambrin Farizah Babu
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland
| | - Susanne Csader
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
| | - Johnson Lok
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
| | - Carlos Gómez-Gallego
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
| | - Kati Hanhineva
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
- Afekta Technologies Ltd., Yliopistonranta 1L, 70211 Kuopio, Finland
- Department of Life Technologies, Food Chemistry and Food Development Unit, University of Turku, 20500 Turku, Finland
| | - Hani El-Nezami
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
- School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, China
| | - Ursula Schwab
- School of Medicine, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, 70200 Kuopio, Finland; (A.F.B.); (S.C.); (J.L.); (C.G.-G.); (K.H.); (H.E.-N.)
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, 70210 Kuopio, Finland
- Correspondence: ; Tel.: +358-403552791
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22
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Horn CL, Morales AL, Savard C, Farrell GC, Ioannou GN. Role of Cholesterol-Associated Steatohepatitis in the Development of NASH. Hepatol Commun 2021; 6:12-35. [PMID: 34558856 PMCID: PMC8710790 DOI: 10.1002/hep4.1801] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 12/11/2022] Open
Abstract
The rising prevalence of nonalcoholic fatty liver disease (NAFLD) and NAFLD-related cirrhosis in the United States and globally highlights the need to better understand the mechanisms causing progression of hepatic steatosis to fibrosing steatohepatitis and cirrhosis in a small proportion of patients with NAFLD. Accumulating evidence suggests that lipotoxicity mediated by hepatic free cholesterol (FC) overload is a mechanistic driver for necroinflammation and fibrosis, characteristic of nonalcoholic steatohepatitis (NASH), in many animal models and also in some patients with NASH. Diet, lifestyle, obesity, key genetic polymorphisms, and hyperinsulinemia secondary to insulin resistance are pivotal drivers leading to aberrant cholesterol signaling, which leads to accumulation of FC within hepatocytes. FC overload in hepatocytes can lead to ER stress, mitochondrial dysfunction, development of toxic oxysterols, and cholesterol crystallization in lipid droplets, which in turn lead to hepatocyte apoptosis, necrosis, or pyroptosis. Activation of Kupffer cells and hepatic stellate cells by hepatocyte signaling and cholesterol loading contributes to this inflammation and leads to hepatic fibrosis. Cholesterol accumulation in hepatocytes can be readily prevented or reversed by statins. Observational studies suggest that use of statins in NASH not only decreases the substantially increased cardiovascular risk, but may ameliorate liver pathology. Conclusion: Hepatic FC loading may result in cholesterol-associated steatohepatitis and play an important role in the development and progression of NASH. Statins appear to provide significant benefit in preventing progression to NASH and NASH-cirrhosis. Randomized controlled trials are needed to demonstrate whether statins or statin/ezetimibe combination can effectively reverse steatohepatitis and liver fibrosis in patients with NASH.
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Affiliation(s)
- Christian L Horn
- Division of Gastroenterology and Hepatology, Department of Medicine, San Antonio Military Medical Center, Fort Sam Houston, TX, USA
| | - Amilcar L Morales
- Division of Gastroenterology and Hepatology, Department of Medicine, San Antonio Military Medical Center, Fort Sam Houston, TX, USA
| | - Christopher Savard
- Division of Gastroenterology, Department of Medicine, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA.,Research and Development, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Geoffrey C Farrell
- Liver Research Group, ANU Medical School, Australian National University at the Canberra Hospital, Garran, ACT, Australia
| | - George N Ioannou
- Division of Gastroenterology, Department of Medicine, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA.,Research and Development, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
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23
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Kanoni S, Kumar S, Amerikanou C, Kurth MJ, Stathopoulou MG, Bourgeois S, Masson C, Kannt A, Cesarini L, Kontoe MS, Milanović M, Roig FJ, Beribaka M, Campolo J, Jiménez-Hernández N, Milošević N, Llorens C, Smyrnioudis I, Francino MP, Milić N, Kaliora AC, Trivella MG, Ruddock MW, Medić-Stojanoska M, Gastaldelli A, Lamont J, Deloukas P, Dedoussis GV, Visvikis-Siest S. Nutrigenetic Interactions Might Modulate the Antioxidant and Anti-Inflammatory Status in Mastiha-Supplemented Patients With NAFLD. Front Immunol 2021; 12:683028. [PMID: 34025683 PMCID: PMC8138178 DOI: 10.3389/fimmu.2021.683028] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 04/23/2021] [Indexed: 12/15/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common liver disease with no therapeutic consensus. Oxidation and inflammation are hallmarks in the progression of this complex disease, which also involves interactions between the genetic background and the environment. Mastiha is a natural nutritional supplement known to possess antioxidant and anti-inflammatory properties. This study investigated how a 6-month Mastiha supplementation (2.1 g/day) could impact the antioxidant and inflammatory status of patients with NAFLD, and whether genetic variants significantly mediate these effects. We recruited 98 patients with obesity (BMI ≥ 30 kg/m2) and NAFLD and randomly allocated them to either the Mastiha or the placebo group for 6 months. The anti-oxidative and inflammatory status was assessed at baseline and post-treatment. Genome-wide genetic data was also obtained from all participants, to investigate gene-by-Mastiha interactions. NAFLD patients with severe obesity (BMI > 35kg/m2) taking the Mastiha had significantly higher total antioxidant status (TAS) compared to the corresponding placebo group (P value=0.008). We did not observe any other significant change in the investigated biomarkers as a result of Mastiha supplementation alone. We identified several novel gene-by-Mastiha interaction associations with levels of cytokines and antioxidant biomarkers. Some of the identified genetic loci are implicated in the pathological pathways of NAFLD, including the lanosterol synthase gene (LSS) associated with glutathione peroxidase activity (Gpx) levels, the mitochondrial pyruvate carrier-1 gene (MPC1) and the sphingolipid transporter-1 gene (SPNS1) associated with hemoglobin levels, the transforming growth factor‐beta‐induced gene (TGFBI) and the micro-RNA 129-1 (MIR129-1) associated with IL-6 and the granzyme B gene (GZMB) associated with IL-10 levels. Within the MAST4HEALTH randomized clinical trial (NCT03135873, www.clinicaltrials.gov) Mastiha supplementation improved the TAS levels among NAFLD patients with severe obesity. We identified several novel genome-wide significant nutrigenetic interactions, influencing the antioxidant and inflammatory status in NAFLD.
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Affiliation(s)
- Stavroula Kanoni
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Satish Kumar
- EA_1122, IGE-PCV, Université de Loraine, Nancy, France
| | - Charalampia Amerikanou
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Mary Jo Kurth
- Randox Laboratories Ltd (RANDOX), Crumlin, United Kingdom
| | | | - Stephane Bourgeois
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | | | - Aimo Kannt
- Fraunhofer Institute of Translational Medicine and Pharmacology, Frankfurt, Germany
| | - Lucia Cesarini
- ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | | | - Maja Milanović
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Francisco J Roig
- Biotechvana, Parc Científic, Universitat de València, Valencia, Spain.,Facultad de Ciencias de la Salud, Universidad San Jorge, Zaragoza, Spain
| | - Mirjana Beribaka
- Department of Biology, Faculty of Technology Zvornik, University of East Sarajevo, Zvornik, Bosnia and Herzegovina
| | - Jonica Campolo
- ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.,Institute of Clinical Physiology National Research Council, Pisa, Italy
| | - Nuria Jiménez-Hernández
- Area de Genòmica i Salut, Fundació per al Foment de la Investigació Sanitária i Biomèdica de la Comunitat Valenciana (FISABIO-Salut Pública), Valencia, Spain.,CIBER en Epidemiología y Salud Pública, Madrid, Spain
| | | | - Carlos Llorens
- Biotechvana, Parc Científic, Universitat de València, Valencia, Spain
| | | | - M Pilar Francino
- Area de Genòmica i Salut, Fundació per al Foment de la Investigació Sanitária i Biomèdica de la Comunitat Valenciana (FISABIO-Salut Pública), Valencia, Spain.,CIBER en Epidemiología y Salud Pública, Madrid, Spain
| | - Nataša Milić
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - Andriana C Kaliora
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
| | - Maria Giovanna Trivella
- ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy.,Institute of Clinical Physiology National Research Council, Pisa, Italy
| | - Mark W Ruddock
- Randox Laboratories Ltd (RANDOX), Crumlin, United Kingdom
| | - Milica Medić-Stojanoska
- Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia.,Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Vojvodina, Novi Sad, Serbia
| | | | - John Lamont
- Randox Laboratories Ltd (RANDOX), Crumlin, United Kingdom
| | - Panos Deloukas
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom.,Centre for Genomic Health, Life Sciences, Queen Mary University of London, London, United Kingdom
| | - George V Dedoussis
- Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece
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24
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Moriyama K, Urata N, Masuda Y, Oda K, Okuno C, Yamada C, Takashimizu S, Kubo A, Kishimoto N, Nishizaki Y. Usefulness of Triglyceride to High-Density Lipoprotein Ratio and Alanine Aminotransferase for Predicting Insulin Resistance and Metabolic Syndrome in the Japanese Population. Metab Syndr Relat Disord 2021; 19:225-232. [PMID: 33577395 DOI: 10.1089/met.2020.0121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background: Considering the fact that both alanine aminotransferase (ALT) and the triglyceride (TG)/high-density lipoprotein cholesterol (HDL-C) ratio are useful markers for cardiovascular disease, insulin resistance (IR), and metabolic syndrome (MetS), the possible association of ALT and TG/HDL-C ratio is conceivable, but the association is not well studied. Moreover, assessment of IR and MetS by a combination lipid and liver biomarkers has rarely been carried out. Methods: A total of 11,808 Japanese subjects who underwent an annual health examination and who were not taking medications were recruited. The association between TG/HDL-C ratio and ALT level was investigated using correlation and multiple linear regression analyses. Homeostasis model assessment of insulin resistance (HOMA-IR) and the number of MetS components were evaluated after subjects were stratified by TG/HDL-C ratio and ALT levels. Results: Correlation analysis revealed that ALT levels were positively associated with TG/HDL-C ratio. Moreover, multiple linear regression analysis revealed that TG/HDL-C ratio was positively associated with ALT levels, and the association was attenuated but persisted in both men and women after additional adjustment for visceral adiposity (body mass index, waist circumference, or fatty liver) and IR (HOMA-IR). HOMA-IR and MetS component number increased with either ALT or TG/HDL-C ratio in both men and women. HOMA-IR and MetS component number were particularly high (HOMA-IR: men 2.82, women 3.22, MetS component number: men 2.6, women 2.1) in subjects with highest ALT level and TG/HDL-C ratio. Conclusions: TG/HDL-C ratio showed a positive association with ALT levels in both sexes. Assessments of IR and MetS can become more precise by evaluating TG/HDL-C ratio and ALT, simultaneously.
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Affiliation(s)
- Kengo Moriyama
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Hachioji Hospital, Hachioji, Japan
| | - Nana Urata
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Yumi Masuda
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Kanae Oda
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Chiori Okuno
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Chizumi Yamada
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Shinji Takashimizu
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Hospital, Isehara, Japan
| | - Akira Kubo
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Noriaki Kishimoto
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
| | - Yasuhiro Nishizaki
- Department of Clinical Health Science, Tokai University School of Medicine, Tokai University Tokyo Hospital, Yoyogi, Japan
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25
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Käkelä P, Rantanen T, Virtanen KA. The Importance of Intestinal Length in Triglyceride Metabolism and in Predicting the Outcomes of Comorbidities in Laparoscopic Roux-en-Y Gastric Bypass-a Narrative Review. Obes Surg 2021; 31:3291-3295. [PMID: 33914241 PMCID: PMC8175306 DOI: 10.1007/s11695-021-05421-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 11/28/2022]
Abstract
In this narrative review, we will appraise if modification of the length of bypassed small intestine based on measured total small intestinal length could optimize the outcomes of the laparoscopic Roux-en-Y gastric bypass (LRYGB). We provide a summary of carefully selected studies to serve as examples and to draw tentative conclusions of the effects of LRYGB on remission of comorbidities. As the heterogeneity of the included studies varied in terms of outcomes, type of study, length of the bypassed small intestine, and the follow-up, a common endpoint could not be defined for this narrative article. To achieve efficient metabolic outcomes, it is important to carefully choose the small intestine length excluded from the food passage suited best to each individual patient. ![]()
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Affiliation(s)
- Pirjo Käkelä
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
| | - Tuomo Rantanen
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
| | - Kirsi A Virtanen
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland.,Department of Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
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26
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Kim JY, He F, Karin M. From Liver Fat to Cancer: Perils of the Western Diet. Cancers (Basel) 2021; 13:1095. [PMID: 33806428 PMCID: PMC7961422 DOI: 10.3390/cancers13051095] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 02/27/2021] [Accepted: 02/28/2021] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC), the most common type of primary liver cancer provides the prototypical example of an obesity-related cancer. The obesity epidemic gave rise to an enormous increase in the incidence of non-alcoholic fatty liver disease (NAFLD), a condition that affects one third of American adults. In about 20% of these individuals, simple liver steatosis (hepatosteatosis) progresses to non-alcoholic steatohepatitis (NASH) characterized by chronic liver injury, inflammation, and fibrosis. In addition to liver failure, NASH greatly increases the risk of HCC. Here we discuss the metabolic processes that control the progression from NAFLD to NASH and from NASH to HCC, with a special emphasis on the role of free-non-esterified cholesterol in the process.
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Affiliation(s)
- Ju Youn Kim
- Laboratory of Gene Regulation and Signal Transduction, Departments of Pharmacology and Pathology, University of California San Diego, 9500 Gilman Drive, San Diego, CA 92093, USA;
| | - Feng He
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China;
| | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Departments of Pharmacology and Pathology, University of California San Diego, 9500 Gilman Drive, San Diego, CA 92093, USA;
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27
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Li J, Zhao Z, Jiang H, Jiang M, Yu G, Li X. Predictive value of elevated alanine aminotransferase for in-hospital mortality in patients with acute myocardial infarction. BMC Cardiovasc Disord 2021; 21:82. [PMID: 33563221 PMCID: PMC7874605 DOI: 10.1186/s12872-021-01903-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 01/07/2021] [Indexed: 12/28/2022] Open
Abstract
Background and aims Liver enzymes, including alanine aminotransferase (ALT) and aspartate aminotransferase (AST), are markers of hepatic dysfunction and fatty liver disease. Although ALT and AST have been suggested as risk factors for cardiovascular disease, their role as predictors of mortality after acute myocardial infarction (AMI) has not been established. The objective of this study was to investigate the predictive value of ALT and AST for mortality in patients with AMI. Methods We analyzed records of 712 patients with AMI and no known liver disease treated at the Department of Cardiovascular Center in the First Hospital of Jilin University. The primary outcome was all-cause in-hospital mortality. Relationships between primary outcome and various risk factors, including serum transaminase levels, were assessed using multivariate logistic regression analysis. Results Age (P < 0.001), hypertension (P = 0.034), prior myocardial infarction (P < 0.001), AST (P < 0.001), ALT (P < 0.001), creatinine (P = 0.007), blood urea nitrogen (P = 0.006), and troponin I (P < 0.001) differed significantly between ST-segment elevation myocardial infarction (STEMI) and non-STEMI. The following factors were associated with an increased risk of in-hospital all-cause mortality in patients with AMI: ALT ≥ 2ULN (adjusted odds ratio [AOR] 2.240 [95% confidence interval (CI), 1.331–3.771]; P = 0.002); age ≥ 65 year (AOR 4.320 [95% CI 2.687–6.947]; P < 0.001); increased fasting plasma glucose (FPG) (AOR 2.319 [95% CI 1.564–3.438]; P < 0.001); elevated D-dimer (AOR 2.117 [95% CI 1.407–3.184]; P < 0.001); elevated fibrinogen (AOR 1.601 [95% CI 1.077–2.380]; P = 0.20); and reduced estimated glomerular filtration rate (eGFR) (AOR 2.279 [95% CI 1.519–3.419]; P < 0.001). Conclusions Our findings demonstrated that elevated ALT was independently associated with increased in-hospital all-cause mortality in patients with AMI. Other risk factors were increased age, FPG, D-dimer, and fibrinogen and decreased eGFR.
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Affiliation(s)
- Jian Li
- Department of Hepatology, The First Hospital of Jilin University, No. 71, Xinmin Street, Changchun, Jilin, China
| | - Zhuo Zhao
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Hui Jiang
- Medical Oncology Department, Jilin Cancer Hospital, Changchun, Jilin, China
| | - Minjie Jiang
- Department of Hepatology, The First Hospital of Jilin University, No. 71, Xinmin Street, Changchun, Jilin, China
| | - Ge Yu
- Department of Hepatology, The First Hospital of Jilin University, No. 71, Xinmin Street, Changchun, Jilin, China
| | - Xu Li
- Department of Hepatology, The First Hospital of Jilin University, No. 71, Xinmin Street, Changchun, Jilin, China.
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Camellia sinesis leaves extract ameliorates high fat diet-induced nonalcoholic steatohepatitis in rats: analysis of potential mechanisms. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2021. [DOI: 10.1007/s40005-020-00500-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Jakhmola-Mani R, Islam A, Katare DP. Liver-Brain Axis in Sporadic Alzheimer's Disease: Role of Ten Signature Genes in a Mouse model. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 20:871-885. [PMID: 33297922 DOI: 10.2174/1871527319666201209111006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 08/23/2020] [Accepted: 09/08/2020] [Indexed: 12/12/2022]
Abstract
AIM Poor nutritional effect of junk food induces injurious adversities to the liver and brain but still most of the developing nations survives on these diets to compensate for fast-paced lifestyle. Aim of the study is to infer the proteinconnections behind liver-brain axis and identify the role of these proteins in causing neurodegenerative disorders. BACKGROUND Chronic consumption of fructose and fat rich food works as a toxin in body and have the ability to cause negative metabolic shift. Recently a study was published in Annals of Internal Medicine (2019) citing the loss of vision and hearing in a 14-year-old boy whose diet was strictly restricted to fries and junk-food for almost a decade. This puts the entire body on insulin resistance and related co-morbidities and causes simultaneous damaging effects in liver as well brain. This work provides insights into liver-brain axis and explains how liver is involved in brain related disorders. OBJECTIVE In this study transcriptomic data relating to chronic eating of junk-food was analyzed and simultaneous damage that happens in liver and brain was assessed at molecular level. METHOD Transcriptomic study was taken from GEO database and analysed to find out the genes dysregulated in both liver and brain during this metabolic stress. Cytoscapev3.7 was used to decipher the signalling between liver and brain. This connection between both was called as Liver-Brain axis. RESULT The results obtained from our study indicates the role of TUBB5-HYOU1-SDF2L1-DECR1-CDH1-EGFR-SKP2- SOD1-IRAK1-FOXO1 gene signature towards the decline of concurrent liver and brain health. Dysregulated levels of these genes are linked to molecular processes like cellular senescence, hypoxia, glutathione synthesis, amino acid modification, increased nitrogen content, synthesis of BCAAs, cholesterol biosynthesis, steroid hormone signalling and VEGF pathway. CONCLUSION We strongly advocate that prolonged consumption of junk food is a major culprit in brain related disorders like Alzheimer's disease and propose that receptors for brain diseases lie outside the brain and aiming them for drug discovery and design may be beneficial in future clinical studies. This study also discusses the connection between NAFLD (nonalcoholic fatty liver disease) and sAD (sporadic Alzheimer's disease) owing to liver-brain axis.
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Affiliation(s)
- Ruchi Jakhmola-Mani
- Proteomics and Translational Research Lab, Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida. India
| | - Anam Islam
- Proteomics and Translational Research Lab, Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida. India
| | - Deepshikha Pande Katare
- Proteomics and Translational Research Lab, Centre for Medical Biotechnology, Amity Institute of Biotechnology, Amity University, Noida. India
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Malhotra P, Gill RK, Saksena S, Alrefai WA. Disturbances in Cholesterol Homeostasis and Non-alcoholic Fatty Liver Diseases. Front Med (Lausanne) 2020; 7:467. [PMID: 32984364 PMCID: PMC7492531 DOI: 10.3389/fmed.2020.00467] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/13/2020] [Indexed: 12/21/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a major health problem associated with obesity and other features of the metabolic syndrome including insulin resistance and dyslipidemia. The accumulation of lipids in hepatocytes causes liver damage and triggers inflammation, fibrosis, and cirrhosis. Beside fatty acids and triglycerides, evidence showed an increased accumulation of free cholesterol in the liver with subsequent toxic effects contributing to liver damage. The maintenance of cholesterol homeostasis in the body requires a balance between several pathways responsible for cholesterol synthesis, transport and conversion into bile acids. Intestinal absorption is also one of the major determinants of cholesterol homeostasis. The nature of changes in cholesterol homeostasis associated with NAFLD has been a subject of extensive investigations. In this article, we will attempt to provide a brief overview of the current knowledge about the disturbances in cholesterol metabolism associated with NAFLD and discuss how certain molecular targets of these pathways could be exploited for the treatment of this multifactorial disease.
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Affiliation(s)
- Pooja Malhotra
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Ravinder K Gill
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Seema Saksena
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States.,Jesse Brown VA Medical Center, Chicago, IL, United States
| | - Waddah A Alrefai
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Illinois at Chicago, Chicago, IL, United States.,Jesse Brown VA Medical Center, Chicago, IL, United States
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Dong X, Zhu Y, Wang S, Luo Y, Lu S, Nan F, Sun G, Sun X. Bavachinin inhibits cholesterol synthesis enzyme FDFT1 expression via AKT/mTOR/SREBP-2 pathway. Int Immunopharmacol 2020; 88:106865. [PMID: 32827918 DOI: 10.1016/j.intimp.2020.106865] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/20/2020] [Accepted: 07/29/2020] [Indexed: 12/15/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a progressive and chronic liver disease. No effective drug is currently approved for the treatment of NAFLD. Traditionally it is thought that pathogenesis of NAFLD develops from some imbalance in lipid control, thereby leading to hepatotoxicity and disease development. Squalene synthase (SQS), encoded by FDFT1, is a key regulator in cholesterol synthesis and thus a potential target for the treatment of NAFLD. Here we could identify bavachinin, a component from traditional Chinese medicine Fructus Psoraleae (FP), which apparently protects HepaRG cells from palmitic acid induced death, suppressing lipid accumulation and cholesterol synthesis through inhibition of FDFT1 through the AKT/mTOR/SREBP-2 pathway. Over-expression of FDFT1 abolished bavachinin (BVC) -induced inhibition of cholesterol synthesis. The data presented here suggest that bavachinin acts as a cholesterol synthesis enzyme inhibitor, and might serve as a drug for treating NAFLD in the future.
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Affiliation(s)
- Xi Dong
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Yue Zhu
- Harbin University of Commerce, Harbin, PR China
| | - Shan Wang
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Yun Luo
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Shan Lu
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Fengwei Nan
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China
| | - Guibo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.
| | - Xiaobo Sun
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Chinese Academy of Medical Sciences, Beijing, PR China; Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China; Key Laboratory of Efficacy Evaluation of Chinese Medicine Against Glycolipid Metabolic Disorders, State Administration of Traditional Chinese Medicine, Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, PR China.
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Wang X, Dong LY, Gai QJ, Ai WL, Wu Y, Xiao WC, Zhang J, An W. Lack of Augmenter of Liver Regeneration Disrupts Cholesterol Homeostasis of Liver in Mice by Inhibiting the AMPK Pathway. Hepatol Commun 2020; 4:1149-1167. [PMID: 32766475 PMCID: PMC7395071 DOI: 10.1002/hep4.1532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 01/18/2023] Open
Abstract
It is well known that excessive cholesterol accumulation within hepatocytes deteriorates nonalcoholic fatty liver disease (NAFLD). Augmenter of liver regeneration (ALR) has been reported to alleviate NAFLD through anti-apoptosis; however, whether ALR could protect liver from cholesterol-induced NAFLD remains unclear. Mice with heterozygous deletion of Gfer (the gene for ALR, Gfer +/-) were generated, and liver steatosis was induced by either choline-deficient ethionine-supplemented, methionine choline-deficient diet for 4 weeks, or high-fat diet for 16 weeks. The results showed that Gfer +/- mice developed a more severe fatty liver phenotype than Gfer +/+ mice. The livers of Gfer +/- mice exhibited a higher concentration of cholesterol and low-density lipoprotein compared with the normal mice. Transcriptome-based analysis predicts low-density lipoprotein receptor (LDLR) primarily involved in the metabolic pathway. The experiments further indicate that cholesterol accumulation within hepatocytes is closely associated with enhancing the expression of LDLR and activation of sterol regulatory element binding protein 2 (SREBP2). Because adenosine monophosphate-activated protein kinase (AMPK) is a critical regulator of SREBP2 activation, we measured whether the activity of AMPK was regulated by ALR. We found that knockdown of ALR expression inhibited the phosphorylation of LKB1, an upstream activator of AMPK, followed by AMPK inactivation and SREBP2 maturation/nuclear translocation, leading to extensive cholesterol accumulation. Meanwhile, cellular oxidative stress increased as a result of ALR knockdown, indicating that ALR might also have a role in suppressing reactive oxygen species production. Conclusion: Our results confirm that ALR regulates cholesterol metabolism and alleviates hepatic steatosis probably through the LKB1-AMPK-SREBP2-LDLR pathway in vivo and in vitro, providing a putative mechanism for combating fatty liver disease.
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Affiliation(s)
- Xin Wang
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Ling-Yue Dong
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Qu-Jing Gai
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Wei-Lun Ai
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Yuan Wu
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Wei-Chun Xiao
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Jing Zhang
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
| | - Wei An
- Department of Cell Biology Capital Medical University and the Municipal Key Laboratory for Liver Protection and Regulation of Regeneration Beijing China
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Okamoto K, Koda M, Okamoto T, Onoyama T, Miyoshi K, Kishina M, Matono T, Kato J, Tokunaga S, Sugihara T, Hiramatsu A, Hyogo H, Tobita H, Sato S, Kawanaka M, Hara Y, Hino K, Chayama K, Murawaki Y, Isomoto H. Serum miR-379 expression is related to the development and progression of hypercholesterolemia in non-alcoholic fatty liver disease. PLoS One 2020; 15:e0219412. [PMID: 32106257 PMCID: PMC7046274 DOI: 10.1371/journal.pone.0219412] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 02/10/2020] [Indexed: 12/15/2022] Open
Abstract
Introduction Non-alcoholic fatty liver disease (NAFLD) has a wide spectrum, eventually leading to cirrhosis and hepatic carcinogenesis. We previously reported that a series of microRNAs (miRNAs) mapped in the 14q32.2 maternally imprinted gene region (Dlk1-Dio3 mat) are related to NAFLD development and progression in a mouse model. We examined the suitability of miR-379, a circulating Dlk1-Dio3 mat miRNA, as a human NAFLD biomarker. Methods Eighty NAFLD patients were recruited for this study. miR-379 was selected from the putative Dlk1-Dio3 mat miRNA cluster because it exhibited the greatest expression difference between NAFLD and non-alcoholic steatohepatitis in our preliminary study. Real-time PCR was used to examine the expression levels of miR-379 and miR-16 as an internal control. One patient was excluded due to low RT-PCR signal. Results Compared to normal controls, serum miR-379 expression was significantly up-regulated in NAFLD patients. Receiver operating characteristic curve analysis suggested that miR-379 is a suitable marker for discriminating NAFLD patients from controls, with an area under the curve value of 0.72. Serum miR-379 exhibited positive correlations with alkaline phosphatase, total cholesterol, low-density-lipoprotein cholesterol and non-high-density-lipoprotein cholesterol levels in patients with early stage NAFLD (Brunt fibrosis stage 0 to 1). The correlation between serum miR-379 and cholesterol levels was lost in early stage NAFLD patients treated with statins. Software-based predictions indicated that various energy metabolism–related genes, including insulin-like growth factor-1 (IGF-1) and IGF-1 receptor, are potential targets of miR-379. Conclusions Serum miR-379 exhibits high potential as a biomarker for NAFLD. miR-379 appears to increase cholesterol lipotoxicity, leading to the development and progression of NAFLD, via interference with the expression of target genes, including those related to the IGF-1 signaling pathway. Our results could facilitate future research into the pathogenesis, diagnosis, and treatment of NAFLD.
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Affiliation(s)
- Kinya Okamoto
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
- * E-mail:
| | - Masahiko Koda
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Toshiaki Okamoto
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Takumi Onoyama
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Kenichi Miyoshi
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Manabu Kishina
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Tomomitsu Matono
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Jun Kato
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Shiho Tokunaga
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Takaaki Sugihara
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Akira Hiramatsu
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Hideyuki Hyogo
- Department of Gastroenterology and Hepatology, JA Hiroshima General Hospital, Hatsukaichi, Hiroshima, Japan
| | - Hiroshi Tobita
- Department of Gastroenterology and Hepatology, Shimane University School of Medicine, Izumo, Shimane, Japan
| | - Shuichi Sato
- Department of Gastroenterology and Hepatology, Shimane University School of Medicine, Izumo, Shimane, Japan
| | - Miwa Kawanaka
- Department of General Internal Medicine 2, General Medical Center, Kawasaki Medical School, Okayama, Okayama, Japan
| | - Yuichi Hara
- Department of Hepatology and Pancreatology, Kawasaki Medical School, Kurashiki, Okayama, Japan
| | - Keisuke Hino
- Department of Hepatology and Pancreatology, Kawasaki Medical School, Kurashiki, Okayama, Japan
| | - Kazuaki Chayama
- Department of Gastroenterology and Metabolism, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Hiroshima, Japan
| | - Yoshikazu Murawaki
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
| | - Hajime Isomoto
- Second Department of Internal Medicine, Tottori University School of Medicine, Yonago, Tottori, Japan
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Pioche T, Skiba F, Bernadet MD, Seiliez I, Massimino W, Houssier M, Tavernier A, Ricaud K, Davail S, Skiba-Cassy S, Gontier K. Kinetic study of the expression of genes related to hepatic steatosis, glucose and lipid metabolism, and cellular stress during overfeeding in mule ducks. Am J Physiol Regul Integr Comp Physiol 2020; 318:R453-R467. [PMID: 31913683 DOI: 10.1152/ajpregu.00198.2019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Induced by overfeeding, hepatic steatosis is a process exploited for the "foie gras" production in mule ducks. To better understand the mechanisms underlying its development, the physiological responses of mule ducks overfed with corn for a duration of 11 days were analyzed. A kinetic analysis of glucose and lipid metabolism and cell protection mechanisms was performed on 96 male mule ducks during overfeeding with three sampling times (after the 4th, the 12th, and the 22nd meal). Gene expression and protein analysis realized on the liver, muscle, and abdominal fat showed an activation of a cholesterol biosynthetic pathway during the complete overfeeding period mainly in livers with significant correlations between its weight and its cholesterolemia (r = 0.88; P < 0.0001) and between the liver weight and the hmgcr and soat1 expression (r = 0.4, P < 0.0001 and r = 0.67; P < 0.0001, respectively). Results also revealed an activation of insulin and amino acid cells signaling a pathway suggesting that ducks boost insulin sensitivity to raise glucose uptake and use via glycolysis and lipogenesis. Cellular stress analysis revealed an upregulation of key autophagy-related gene expression atg8 and sqstm1(P < 0.0001) during the complete overfeeding period, mainly in the liver, in contrast to an induction of cyp2e1(P < 0.0001), suggesting that autophagy could be suppressed during steatosis development. This study has highlighted different mechanisms enabling mule ducks to efficiently handle the starch overload by keeping its liver in a nonpathological state. Moreover, it has revealed potential biomarker candidates of hepatic steatosis as plasma cholesterol for the liver weight.
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Affiliation(s)
- Tracy Pioche
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Fabien Skiba
- Nutricia, Route de Saint-Sever, Haut-Mauco, France
| | - Marie-Dominique Bernadet
- Unité Expérimentale Palmipèdes à Foie Gras, Institut National de la Recherche Agronomique Bordeaux-Aquitaine, Domaine d'Artiguères, Benquet, France
| | - Iban Seiliez
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - William Massimino
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Marianne Houssier
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Annabelle Tavernier
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Karine Ricaud
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Stéphane Davail
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Sandrine Skiba-Cassy
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
| | - Karine Gontier
- Institut National de la Recherche Agronomique, Univ Pau & Pays Adour, Energy and Environment Solutions initiative, Nutrition, Métabolisme, Aquaculture, Saint-Pée-sur-Nivelle, France
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Cheraghpour M, Imani H, Ommi S, Alavian SM, Karimi-Shahrbabak E, Hedayati M, Yari Z, Hekmatdoost A. Hesperidin improves hepatic steatosis, hepatic enzymes, and metabolic and inflammatory parameters in patients with nonalcoholic fatty liver disease: A randomized, placebo-controlled, double-blind clinical trial. Phytother Res 2019; 33:2118-2125. [PMID: 31264313 DOI: 10.1002/ptr.6406] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 04/05/2019] [Accepted: 05/19/2019] [Indexed: 01/09/2023]
Abstract
This study aimed to evaluate the effects of hesperidin on nonalcoholic fatty liver disease (NAFLD) characteristics. In this randomized, double-blind, controlled clinical trial, 50 NAFLD patients were supplemented with either 1-g hesperidin capsule or identical placebo capsule for 12 weeks. During the intervention, both groups were advised to follow healthy lifestyle habits including dietary and physical activity recommendations. At the end of the study, hesperidin supplementation, compared with placebo, was associated with a significant reduction in alanine aminotransferase (p = .005), γ-glutamyltransferase (p = .004), total cholesterol (p = .016), triglyceride (p = .049), hepatic steatosis (p = .041), high-sensitivity C-reactive protein (p = .029), tumor necrosis factor-α, and nuclear factor-κB (NF-κB). In conclusion, our results indicate that hesperidin supplementation accompanied with lifestyle modification is superior to lifestyle modification alone in management of NAFLD at least partially through inhibiting NF-κB activation and improving lipid profile. Further studies with higher dose of hesperidin are required to find the optimal dose.
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Affiliation(s)
- Makan Cheraghpour
- Cancer Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Imani
- Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Shahrzad Ommi
- Department of Dietetics and Nutrition, Florida International University, Miami, Florida
| | - Seyed Moayed Alavian
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | | | - Mehdi Hedayati
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Yari
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Division of Gastroenterology, BC Children's Hospital, Vancouver, British Columbia, Canada
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36
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Ahn SB, Jun DW, Jang K, Lee BH, Shin KJ. Duodenal Niemann-Pick C1-like 1 expression was negatively correlated with liver X receptor expression in nonalcoholic fatty liver disease. Korean J Intern Med 2019; 34:777-784. [PMID: 29466845 PMCID: PMC6610185 DOI: 10.3904/kjim.2017.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 11/03/2017] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND/AIMS Intestinal cholesterol absorption includes intestinal Niemann-Pick C1-like 1 (NPC1L1) and is an important target pathway in nonalcoholic fatty liver disease (NAFLD). We investigated the expression of NPC1L1 and its correlation with liver X receptor (LXR) expression in peripheral mononuclear (PMN) cells in patients with NAFLD. METHODS We evaluated intestinal expression of NPC1L1 in 25 NAFLD patients and 28 healthy controls. We calculated the mRNA expression levels of LXR and farnesoid X receptor (FXR), which are master players of cholesterol metabolism in PMN cells. The protein expression of ABCA1, ABCG5/8, NPC1L1, SREBP, LXR, FXR, and CD36 was measured on tissue samples from the duodenum and ileum. RESULTS The expression of LXR (p = 0.01) and FXR (p = 0.03) in PMN cells was increased in the NAFLD group compared to the control group. Duodenal NPC1L1 decreased in the NAFLD group compared to the healthy controls (3.38 ± 1.4 vs. 2.42 ± 1.2, p = 0.05). NPC1L1 expression in the duodenum was negatively correlated with LXR expression in PMN cells. Expression of LXR and FXR in the ileum was also negatively correlated with the expression of LXR in PMN cells. CONCLUSION Duodenal NPC1L1 expression was decreased in NAFLD and was negatively correlated with LXR expression in PMN cells.
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Affiliation(s)
- Sang Bong Ahn
- Department of Internal Medicine, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Dae Won Jun
- Department of Internal Medicine, Hanyang University School of Medicine, Seoul, Korea
- Correspondence to Dae Won Jun, M.D.Department of Internal Medicine,Hanyang University College of Medicine, 222-1 Wangsimni-ro,Seongdong-gu, Seoul 04763, KoreaTel: +82-2-2290-8338 Fax: +82-2-972-0068 E-mail:
| | - Kiseok Jang
- Department of Pathology, Hanyang University School of Medicine, Seoul, Korea
- Kiseok Jang, M.D. Department of Pathology, HanyangUniversity College of Medicine, 222-1 Wangsimni-ro,Seongdong-gu, Seoul 04763, Korea Tel: +82-2-2290-8248Fax: +82-2296-7502 E-mail:
| | - Byung Hoon Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Korea
| | - Kye Jung Shin
- College of Pharmacy, The Catholic University of Korea, Bucheon, Korea
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37
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Janac J, Zeljkovic A, Jelic-Ivanovic Z, Dimitrijevic-Sreckovic V, Miljkovic M, Stefanovic A, Munjas J, Vekic J, Kotur-Stevuljevic J, Spasojević-Kalimanovska V. The association between lecithin-cholesterol acyltransferase activity and fatty liver index. Ann Clin Biochem 2019; 56:583-592. [PMID: 31084205 DOI: 10.1177/0004563219853596] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background Non-alcoholic fatty liver disease is a frequent ailment with known complications, including those within the cardiovascular system. Associations between several indicators of high-density lipoprotein metabolism and function with clinical and laboratory parameters for the assessment of fatty liver index, a surrogate marker of non-alcoholic fatty liver disease, were evaluated. Methods The study comprised 130 patients classified according to fatty liver index values: fatty liver index < 30, fatty liver index 30–59 (the intermediate group) and fatty liver index ⩾ 60. Lecithin–cholesterol acyltransferase and cholesteryl ester transfer protein activities were determined. Paraoxonase 1 concentration and its activity, paraoxonase 3 concentration and high-density lipoprotein subclass distribution were assessed. Results Increased lecithin–cholesterol acyltransferase activity correlated with increased fatty liver index ( P < 0.001). Paraoxonase 3 concentration was lower in the fatty liver index ⩾ 60 group compared with the fatty liver index < 30 group ( P < 0.05). Cholesteryl ester transfer protein activity, paraoxonase 1 concentration and its activity did not significantly differ across the fatty liver index groups. The relative proportion of small-sized high-density lipoprotein 3 subclass was higher in the fatty liver index ⩾ 60 group compared with the other two fatty liver index groups ( P < 0.01). Lecithin–cholesterol acyltransferase activity positively associated with the fatty liver index ⩾ 60 group and remained significant after adjustment for other potential confounders. Only the triglyceride concentration remained significantly associated with lecithin–cholesterol acyltransferase activity when the parameters that constitute the fatty liver index equation were examined. Conclusions Higher lecithin–cholesterol acyltransferase activity is associated with elevated fatty liver index values. Significant independent association between triglycerides and lecithin–cholesterol acyltransferase activity might indicate a role of hypertriglyceridaemia in alterations of lecithin–cholesterol acyltransferase activity in individuals with elevated fatty liver index.
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Affiliation(s)
- Jelena Janac
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Zeljkovic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Zorana Jelic-Ivanovic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Vesna Dimitrijevic-Sreckovic
- 2 Clinic for Endocrinology, Diabetes and Metabolic Diseases, Clinical Centre of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Milica Miljkovic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Aleksandra Stefanovic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Jelena Munjas
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Jelena Vekic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | - Jelena Kotur-Stevuljevic
- 1 Department of Medical Biochemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
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38
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Ioannou GN, Landis CS, Jin GY, Haigh WG, Farrell GC, Kuver R, Lee SP, Savard C. Cholesterol Crystals in Hepatocyte Lipid Droplets Are Strongly Associated With Human Nonalcoholic Steatohepatitis. Hepatol Commun 2019; 3:776-791. [PMID: 31168512 PMCID: PMC6545865 DOI: 10.1002/hep4.1348] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/04/2019] [Indexed: 12/19/2022] Open
Abstract
It is unclear what drives the development of fibrosing nonalcoholic steatohepatitis (NASH). We aimed to determine whether cholesterol crystallization within hepatocyte lipid droplets (LDs) distinguishes patients with fibrosing NASH from patients with isolated hepatic steatosis and to study pathways leading to cholesterol accumulation in hepatocyte LDs. Patients with fibrosing NASH (n = 16) were compared to patients with isolated steatosis (n = 14). Almost all patients with fibrosing NASH had free cholesterol staining by filipin (16/16) and cholesterol crystals (15/16) in hepatocyte LDs, mostly in association with the LD membrane, compared to only 3/14 with cholesterol crystals and 3/14 with faint filipin staining in patients with isolated steatosis (P < 0.05). We were unable to identify significant differences in the expression of genes in liver tissue related to cholesterol homeostasis or LD proteins between patients with fibrosing NASH and isolated steatosis. Human hepatoma cell line (HepG2) cells were supplemented with low-density lipoprotein (LDL)-cholesterol and oleic acid to develop large LDs, similar to those observed in patients with NASH. Fluorescent markers were used to track the uptake and intracellular trafficking of LDL-cholesterol. LDL-cholesterol was taken up by HepG2 cells and transported through the endosomal-lysosomal compartment directly to LDs, suggesting direct contact sites between late endosomes and LDs. Exposure of HepG2 cells to LDL-cholesterol resulted in a high concentration of cholesterol and cholesterol crystallization in LDs. Conclusion: Excess cholesterol is stored in the liver primarily within hepatocyte LDs where it can crystallize. Our findings are best explained by direct transport of cholesterol from late endosomes/lysosomes to LDs in hepatocytes. We found a strong association between the presence of LD cholesterol crystals and the development of fibrosing NASH in humans, suggesting a causal relationship.
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Affiliation(s)
- George N Ioannou
- Division of Gastroenterology, Department of Medicine Veterans Affairs Puget Sound Health Care System Seattle WA.,Division of Gastroenterology, Department of Medicine University of Washington Seattle WA.,Research and Development Veterans Affairs Puget Sound Health Care System Seattle WA
| | - Charles S Landis
- Division of Gastroenterology, Department of Medicine University of Washington Seattle WA
| | - Ga-Young Jin
- Research and Development Veterans Affairs Puget Sound Health Care System Seattle WA
| | - W Geoffrey Haigh
- Research and Development Veterans Affairs Puget Sound Health Care System Seattle WA
| | - Geoffrey C Farrell
- Liver Research Group Australian National University Medical School at the Canberra Hospital Garran Australia
| | - Rahul Kuver
- Division of Gastroenterology, Department of Medicine University of Washington Seattle WA
| | - Sum P Lee
- Division of Gastroenterology, Department of Medicine University of Washington Seattle WA
| | - Christopher Savard
- Division of Gastroenterology, Department of Medicine Veterans Affairs Puget Sound Health Care System Seattle WA.,Division of Gastroenterology, Department of Medicine University of Washington Seattle WA.,Research and Development Veterans Affairs Puget Sound Health Care System Seattle WA
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39
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Non-Cholesterol Sterol Concentrations as Biomarkers for Cholesterol Absorption and Synthesis in Different Metabolic Disorders: A Systematic Review. Nutrients 2019; 11:nu11010124. [PMID: 30634478 PMCID: PMC6356200 DOI: 10.3390/nu11010124] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/21/2018] [Accepted: 12/28/2018] [Indexed: 12/27/2022] Open
Abstract
Non-cholesterol sterols are validated biomarkers for intestinal cholesterol absorption and endogenous cholesterol synthesis. However, their use in metabolic disturbances has not been systematically explored. Therefore, we conducted a systematic review to provide an overview of non-cholesterol sterols as markers for cholesterol metabolism in different metabolic disorders. Potentially relevant studies were retrieved by a systematic search of three databases in July 2018 and ninety-four human studies were included. Cholesterol-standardized levels of campesterol, sitosterol and cholestanol were collected to reflect cholesterol absorption and those of lathosterol and desmosterol to reflect cholesterol synthesis. Their use as biomarkers was examined in the following metabolic disorders: overweight/obesity (n = 16), diabetes mellitus (n = 15), metabolic syndrome (n = 5), hyperlipidemia (n = 11), cardiovascular disease (n = 17), and diseases related to intestine (n = 16), liver (n = 22) or kidney (n = 2). In general, markers for cholesterol absorption and synthesis displayed reciprocal patterns, showing that cholesterol metabolism is tightly regulated by the interplay of intestinal absorption and endogenous synthesis. Distinctive patterns for cholesterol absorption or cholesterol synthesis could be identified, suggesting that metabolic disorders can be classified as 'cholesterol absorbers or cholesterol synthesizers'. Future studies should be performed to confirm or refute these findings and to examine whether this information can be used for targeted (dietary) interventions.
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40
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Lahelma M, Sädevirta S, Lallukka-Brück S, Sevastianova K, Mustelin L, Gylling H, Rockette-Wagner B, Kriska AM, Yki-Järvinen H. Effects of Weighted Hula-Hooping Compared to Walking on Abdominal Fat, Trunk Muscularity, and Metabolic Parameters in Overweight Subjects: A Randomized Controlled Study. Obes Facts 2019; 12:385-396. [PMID: 31216547 PMCID: PMC6758714 DOI: 10.1159/000500572] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 04/24/2019] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Weighted hula-hoops have gained popularity, but whether they indeed reshape the trunk or have beneficial metabolic effects in overweight subjects is unknown. OBJECTIVES To determine effects of hula-hooping and walking matched for energy expenditure on android fat %, trunk muscle mass, and metabolic parameters in a randomized cross-over study. DESIGN We recruited 55 overweight nondiabetic subjects, who were randomized to hula-hooping (HULA) for 6 weeks using a 1.5-kg weighted hula-hoop followed by walking (WALK) for another 6 weeks or vice versa. The increments in energy expenditure were similar by HULA and WALK. Body composition (dual-energy X-ray absorptiometry) and metabolic parameters were measured at baseline and after HULA and WALK. The primary endpoint was the change in fat % in the android region. RESULTS A total of 53subjects (waist 92 ± 1 cm, body mass index 28 ± 1 kg/m2) completed the study. Body weight changed similarly (-0.6 ± 0.2 vs. -0.5 ± 0.2 kg, nonsignificant; HULA vs. WALK). During the intervention the subjects hula-hooped on average 12.8 ± 0.5 min/day and walked 9,986 ± 376 steps/day. The % fat in the android region decreased significantly by HULA but not by WALK (between-group change p < 0.001). Trunk muscle mass increased more by HULA than by WALK (p < 0.05). Waist circumference decreased more by HULA than by WALK (-3.1 ± 0.3 cm vs. -0.7 ± 0.4 cm, p < 0.001; HULA vs. WALK). WALK but not HULA significantly lowered systolic blood pressure and increased HDL cholesterol while HULA significantly decreased LDL cholesterol. CONCLUSIONS Hula-hooping with a weighted hula-hoop can be used to decrease abdominal fat % and increase trunk muscle mass in overweight subjects. Its LDL lowering effect resembles that described for resistance training.
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Affiliation(s)
- Mari Lahelma
- Minerva Foundation Institute for Medical Research, Helsinki, Finland,
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland,
| | - Sanja Sädevirta
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Susanna Lallukka-Brück
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Ksenia Sevastianova
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Linda Mustelin
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Helena Gylling
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | | | - Andrea M Kriska
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Hannele Yki-Järvinen
- Minerva Foundation Institute for Medical Research, Helsinki, Finland
- Department of Medicine, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
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41
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Wu Q, Wang Q, Fu J, Ren R. Polysaccharides derived from natural sources regulate triglyceride and cholesterol metabolism: a review of the mechanisms. Food Funct 2019; 10:2330-2339. [DOI: 10.1039/c8fo02375a] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This paper presents a comprehensive review of hypolipidemic mechanism of polysaccharides from natural sources.
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Affiliation(s)
- Qingqian Wu
- Department of Pathology and Pathophysiology
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province
- First Affiliated Hospital
- School of Medicine
- Zhejiang University
| | - Qintao Wang
- Department of Pathology and Pathophysiology
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province
- First Affiliated Hospital
- School of Medicine
- Zhejiang University
| | - Junfen Fu
- Children's Hospital
- School of Medicine
- Zhejiang University
- Hangzhou
- China
| | - Rendong Ren
- School of Public Health
- Fujian Medical University
- Fuzhou
- China
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42
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Abstract
BACKGROUND AND AIMS Different bariatric procedures have been associated with variable weight loss and decrease in serum levels of lipids and lipoproteins. This variation could be partly related to the length of the small intestinal bypass. We evaluated the association of the small intestinal length with the non-alcoholic fatty liver disease (NAFLD) at baseline and with lipid metabolism before and after laparoscopic Roux-en-Y gastric bypass (LRYGB). METHODS Seventy consecutive morbidly obese patients were recruited to this prospective study. A standard 60-cm biliopancreatic limb (BPL) and 120-cm alimentary limb (AL) was performed, and thereafter, the common channel (CC) length was measured during elective LRYGB. Histological analysis of liver biopsy to diagnose NAFLD was performed. The mRNA expression of genes participating in the cholesterol and fatty acid metabolism in the liver was analyzed. RESULTS Female sex (p = 0.006), serum triglycerides (TG, p = 0.016), serum alanine aminotransferase (ALT, p = 0.007), and liver steatosis (p = 0.001) associated with the small intestinal length (BPL + AL + CC) at baseline. Association remained significant between levels of serum TG and CC length (p = 0.048) at 1-year follow-up. Liver mRNA expression of genes regulating cholesterol synthesis and bile metabolism did not associate with the baseline small intestinal length. CONCLUSIONS Our findings support the suggestions that small intestinal length regulates TG metabolism before and after LRYGB. Therefore, modification of the length of bypassed small intestine based on measured total small intestinal length could optimize the outcomes of the elective LRYGB.
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43
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Chang Y, Noh YH, Suh BS, Kim Y, Sung E, Jung HS, Kim CW, Kwon MJ, Yun KE, Noh JW, Shin H, Cho YK, Ryu S. Bidirectional Association between Nonalcoholic Fatty Liver Disease and Gallstone Disease: A Cohort Study. J Clin Med 2018; 7:jcm7110458. [PMID: 30469392 PMCID: PMC6262563 DOI: 10.3390/jcm7110458] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 02/06/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) and gallstone disease (GD) are often found to coexist but the sequential relationship of NAFLD and GD to each other remains controversial. We prospectively evaluated the bidirectional relationship of NAFLD with GD. A cohort study was performed on Korean adults who underwent a health checkup and were followed annually or biennially for a mean of 6.0 years. Fatty liver and gallstones were diagnosed by ultrasound. NAFLD was defined as hepatic steatosis on ultrasonography in the absence of excessive alcohol use or other identifiable causes. The NAFLD severity was determined by non-invasive fibrosis markers. Among 283,446 participants without either gallstones or cholecystectomy at baseline, 6440 participants developed gallstones. Among 219,641 participants without NAFLD at baseline, 49,301 participants developed NAFLD. The multivariable-adjusted hazard ratio (95% confidence interval) for incident gallstone comparing the NAFLD group vs. the non-NAFLD group was 1.26 (1.17–1.35). Increased non-invasive fibrosis markers of NAFLD were positively associated with an increased incidence of gallstones in a graded and dose-responsive manner (p-trend < 0.01). The multivariable-adjusted hazard ratios (95% confidence intervals) for incident NAFLD comparing gallstone and cholecystectomy to no GD were 1.14 (1.07–1.22) and 1.17 (1.03–1.33), respectively. This large-scale cohort study of young and middle-aged individuals demonstrated a bidirectional association between NAFLD and GD. NAFLD and its severity were independently associated with an increased incidence of gallstones, while GD and cholecystectomy were also associated with incident NAFLD. Our findings indicate that the conditions may affect each other, requiring further studies to elucidate the potential mechanisms underlying this association.
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Affiliation(s)
- Yoosoo Chang
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
- Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul 06351, Korea.
| | - Yoo-Hun Noh
- Department of Anatomy and Cell Biology, College of Medicine, Chung-Ang University, Seoul 06974, Korea.
| | - Byung-Seong Suh
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
| | - Yejin Kim
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
| | - Eunju Sung
- Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
| | - Hyun-Suk Jung
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
| | - Chan-Won Kim
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
| | - Min-Jung Kwon
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03131, Korea.
| | - Kyung Eun Yun
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
| | - Jin-Won Noh
- Department of Healthcare Management and Institute of Global Healthcare Research, Eulji University, Seongnam 13135, Korea.
- Global Health Unit, Department of Health Sciences, University Medical Centre Groningen, University of Groningen, Groningen 9712, The Netherlands.
| | - Hocheol Shin
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
- Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
| | - Yong Kyun Cho
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
| | - Seungho Ryu
- Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 03181, Korea.
- Center for cohort studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul 04514, Korea.
- Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul 06351, Korea.
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44
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Loh K, Tam S, Murray-Segal L, Huynh K, Meikle PJ, Scott JW, van Denderen B, Chen Z, Steel R, LeBlond ND, Burkovsky LA, O'Dwyer C, Nunes JRC, Steinberg GR, Fullerton MD, Galic S, Kemp BE. Inhibition of Adenosine Monophosphate-Activated Protein Kinase-3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase Signaling Leads to Hypercholesterolemia and Promotes Hepatic Steatosis and Insulin Resistance. Hepatol Commun 2018; 3:84-98. [PMID: 30619997 PMCID: PMC6312662 DOI: 10.1002/hep4.1279] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/15/2018] [Indexed: 01/21/2023] Open
Abstract
Adenosine monophosphate-activated protein kinase (AMPK) regulates multiple signaling pathways involved in glucose and lipid metabolism in response to changes in hormonal and nutrient status. Cell culture studies have shown that AMPK phosphorylation and inhibition of the rate-limiting enzyme in the mevalonate pathway 3-hydroxy-3-methylglutaryl (HMG) coenzyme A (CoA) reductase (HMGCR) at serine-871 (Ser871; human HMGCR Ser872) suppresses cholesterol synthesis. In order to evaluate the role of AMPK-HMGCR signaling in vivo, we generated mice with a Ser871-alanine (Ala) knock-in mutation (HMGCR KI). Cholesterol synthesis was significantly suppressed in wild-type (WT) but not in HMGCR KI hepatocytes in response to AMPK activators. Liver cholesterol synthesis and cholesterol levels were significantly up-regulated in HMGCR KI mice. When fed a high-carbohydrate diet, HMGCR KI mice had enhanced triglyceride synthesis and liver steatosis, resulting in impaired glucose homeostasis. Conclusion: AMPK-HMGCR signaling alone is sufficient to regulate both cholesterol and triglyceride synthesis under conditions of a high-carbohydrate diet. Our findings highlight the tight coupling between the mevalonate and fatty acid synthesis pathways as well as revealing a role of AMPK in suppressing the deleterious effects of a high-carbohydrate diet.
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Affiliation(s)
- Kim Loh
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Shanna Tam
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Lisa Murray-Segal
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Kevin Huynh
- Baker Heart and Diabetes Institute Melbourne Australia
| | | | - John W Scott
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia.,Mary MacKillop Institute for Health Research Australian Catholic University Fitzroy Australia.,The Florey Institute of Neuroscience and Mental Health Parville Australia
| | - Bryce van Denderen
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Zhiping Chen
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Rohan Steel
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Nicholas D LeBlond
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Leah A Burkovsky
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Conor O'Dwyer
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Julia R C Nunes
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Gregory R Steinberg
- Division of Endocrinology and Metabolism, Department of Medicine and Department of Biochemistry and Biomedical Sciences McMaster University Hamilton Canada
| | - Morgan D Fullerton
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Sandra Galic
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Bruce E Kemp
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia.,Mary MacKillop Institute for Health Research Australian Catholic University Fitzroy Australia
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45
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Abstract
Background and aims: Non-alcoholic fatty liver disease (NAFLD) associates with low levels of serum plant sterols in cross-sectional studies. In addition, it has been suggested that the hepatic sterol transport mechanisms are altered in NAFLD. Therefore, we investigated the association between serum, liver and bile plant sterols and sitostanol with NAFLD. Methods: Out of the 138 individuals (age: 46.3 ± 8.9, body mass index: 43.3 ± 6.9 kg/m², 28% men and 72% women), 44 could be histologically categorized to have normal liver, and 94 to have NAFLD. Within the NAFLD group, 28 had simple steatosis and 27 had non-alcoholic steatohepatitis. Plant sterols and sitostanol were measured from serum (n=138), liver (n=38), and bile (n=41). The mRNA expression of genes regulating liver sterol metabolism and inflammation was measured (n=102). Results: Liver and bile sitostanol ratios to cholesterol were higher in those with NAFLD compared to those with histologically normal liver (all P<0.022). Furthermore, liver sitostanol to cholesterol ratio correlated positively with histological steatosis and lobular inflammation (rs > 0.407, P<0.01 for both). In contrast, liver sitosterol to cholesterol ratio correlated negatively with steatosis (rs = −0.392, P=0.015) and lobular inflammation (rs = −0.395, P=0.014). Transcriptomics analysis revealed suggestive correlations between serum plant sterol levels and mRNA expression. Conclusion: Our study showed that liver and bile sitostanol ratios to cholesterol associated positively and liver sitosterol ratio to cholesterol associated negatively with liver steatosis and inflammation in obese individuals with NAFLD..
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Sahlman P, Nissinen M, Simonen P, Färkkilä M. Noncholesterol Sterols as Surrogate Markers in Patients with Severe Alcoholic Hepatitis. Lipids 2018; 53:323-334. [PMID: 29663389 DOI: 10.1002/lipd.12033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 02/13/2018] [Accepted: 02/13/2018] [Indexed: 12/20/2022]
Abstract
Severe alcoholic hepatitis (AH) is a life-threatening condition lacking good serologic markers to tailor treatment and predict recovery. We examined the cholesterol metabolism in severe AH to explore prognostic markers and evaluate the profile of cholesterol precursors, cholestanol and phytosterols, in this context. We assessed serum cholesterol, cholesterol precursors, cholestanol, phytosterols, and biochemical markers in 24 patients with severe AH treated with prednisolone and randomized to ciprofloxacin in the ratio 1:1. Response to prednisolone was assessed with the Lille model. Evaluations were made between responders and nonresponders to corticosteroid treatment and during follow-up for 180 days. The findings were compared with those from patients with primary sclerosing cholangitis (PSC) (n = 156) and healthy individuals (n = 124). Responders to prednisolone had ~56-60% higher (p-value 0.032-0.044) serum ratios to cholesterol of phytosterols, while the lathosterol/campesterol ratio was ~76% (p = 0.031) lower compared to nonresponders. Stigmasterol/cholesterol predicted response to corticosteroid therapy. Surrogate markers of cholesterol synthesis (lathosterol and desmosterol) inversely reflected those of absorption (cholestanol and phytosterols) in PSC and controls (r-range -0.247 to -0.559, p < 0.01 for all), contrary to AH patients, among whom this reciprocal regulation was partially recovered on day 90 (lathosterol: r-range -0.733 to -0.952, p < 0.05 for all). AH patients had ~26% lower lathosterol/cholesterol, but 1.13-3.87-fold higher cholestanol/cholesterol and sitosterol/cholesterol compared to control groups (p < 0.05 for all). Median ferritin concentration at baseline was ~37% lower (p = 0.011) among the responders. Cholesterol precursors and phytosterols have a disease-specific profile in AH. Phytosterols and ferritin may serve as surrogate markers for short-term response.
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Affiliation(s)
- Perttu Sahlman
- Clinic of Gastroenterology, Abdominal Center, University of Helsinki and Helsinki University Hospital, PL 900, Helsinki, 00029, Finland
| | - Markku Nissinen
- Clinic of Gastroenterology, Abdominal Center, University of Helsinki and Helsinki University Hospital, PL 900, Helsinki, 00029, Finland
| | - Piia Simonen
- Division of Cardiology, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, PL 900, Helsinki, 00029, Finland
| | - Martti Färkkilä
- Clinic of Gastroenterology, Abdominal Center, University of Helsinki and Helsinki University Hospital, PL 900, Helsinki, 00029, Finland
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de Castro GS, Calder PC. Non-alcoholic fatty liver disease and its treatment with n-3 polyunsaturated fatty acids. Clin Nutr 2018; 37:37-55. [DOI: 10.1016/j.clnu.2017.01.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 12/12/2016] [Accepted: 01/10/2017] [Indexed: 02/08/2023]
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Simonen P, Lehtonen J, Lampi AM, Piironen V, Stenman UH, Kupari M, Gylling H. Desmosterol accumulation in users of amiodarone. J Intern Med 2018; 283:93-101. [PMID: 28861933 DOI: 10.1111/joim.12682] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Amiodarone is an effective and widely used antiarrhythmic drug with many possible adverse effects including hypercholesterolaemia and hepatotoxicity. OBJECTIVE Our aim was to evaluate how long-term amiodarone treatment affects cholesterol metabolism. METHODS The study population consisted of 56 cardiac patients, of whom 20 were on amiodarone (amiodarone + group) and 36 did not use the drug (amiodarone - group). We also studied a control group of 124 individuals selected randomly from the population. Cholesterol metabolism was evaluated by analysis of serum noncholesterol sterols by gas-liquid chromatography and gas chromatography-mass spectrometry. RESULTS Comparisons of serum lipids and noncholesterol sterols across the three groups showed increased serum triglyceride in users of amiodarone but no statistically significant group differences in total, LDL or HDL cholesterol or serum proprotein convertase subtilisin/kexin type 9 concentrations. Nor did the groups differ in the ratios of cholestanol or plant sterols to cholesterol in serum, suggesting that cholesterol absorption was unaltered. However, all users of amiodarone had very markedly elevated serum desmosterol concentrations: the desmosterol-to-cholesterol ratio (102 × μmol mmol-1 ) averaged 1030.7 ± 115.7 (mean ± SE) in the amiodarone + group versus 82.7 ± 3.4 and 75.9 ± 1.4 in the amiodarone - and the population control groups (P < 0.001), respectively. CONCLUSION Use of amiodarone was associated with on average 12-fold serum desmosterol concentrations compared with the control groups. This observation is fully novel and suggests that amiodarone interferes with the conversion of desmosterol to cholesterol in the cholesterol synthesis pathway. Whether accumulation of desmosterol plays a role in amiodarone-induced hepatotoxicity deserves to be studied in the future.
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Affiliation(s)
- P Simonen
- Heart and Lung Center, Cardiology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - J Lehtonen
- Heart and Lung Center, Cardiology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - A-M Lampi
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - V Piironen
- Department of Food and Environmental Sciences, University of Helsinki, Helsinki, Finland
| | - U-H Stenman
- Clinical Chemistry, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - M Kupari
- Heart and Lung Center, Cardiology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - H Gylling
- Internal Medicine, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
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Du T, Sun X, Yu X. Non-HDL cholesterol and LDL cholesterol in the dyslipidemic classification in patients with nonalcoholic fatty liver disease. Lipids Health Dis 2017; 16:229. [PMID: 29197406 PMCID: PMC5712116 DOI: 10.1186/s12944-017-0621-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 11/22/2017] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Low-density lipoprotein cholesterol (LDL-C) always underestimates the true cholesterol burden in patients with nonalcoholic fatty liver disease (NAFLD). We aimed to compare LDL-C and non-high-density lipoprotein cholesterol (non-HDL-C) in the identification of high-risk dyslipidemic phenotypes in those with NAFLD. METHODS We conducted a cross-sectional analysis using a cohort of 9560 apparently healthy Chinese adults who underwent comprehensive health checkups including abdominal ultrasonography. RESULTS Among 3709 patients with NAFLD, the prevalence of abnormal LDL using LDL-C was 68.5%, whereas the prevalence was relatively lower when using non-HDL-C (55.9%). The concordance between non-HDL-C- and LDL-C-based diagnoses of abnormal LDL was similar in the hypertriglyceridemic (ҝ = 0.56; 95% CI 0.52-0.60) and normotriglyceridemic subgroups (ҝ = 0.47; 95% CI 0.44-0.51). Non-HDL-C detected fewer patients with abnormal LDL than LDL-C in normotriglyceridemic patients. However, non-HDL-C detected more patients with abnormal LDL than LDL-C in hypertriglyceridemic patients: 114 of the 1662 patients considered as abnormal LDL according to LDL-C fell into the normonon-HDL-C phenotype, whereas 204 of the 1662 patients considered as abnormal LDL according to non-HDL-C fell into the normoLDL-C phenotype. CONCLUSION Among patients with NAFLD, LDL-C is superior to non-HDL-C in the detection of high-risk phenotypes in normotriglyceridemic patients, whereas non-HDL-C seems to be superior in hypertriglyceridemic patients.
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Affiliation(s)
- Tingting Du
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xingxing Sun
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xuefeng Yu
- Department of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Bellanti F, Villani R, Facciorusso A, Vendemiale G, Serviddio G. Lipid oxidation products in the pathogenesis of non-alcoholic steatohepatitis. Free Radic Biol Med 2017; 111:173-185. [PMID: 28109892 DOI: 10.1016/j.freeradbiomed.2017.01.023] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 01/11/2017] [Accepted: 01/15/2017] [Indexed: 02/08/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the major public health challenge for hepatologists in the twenty-first century. NAFLD comprises a histological spectrum ranging from simple steatosis or fatty liver, to steatohepatitis, fibrosis, and cirrhosis. It can be categorized into two principal phenotypes: (1) non-alcoholic fatty liver (NAFL), and (2) non-alcoholic steatohepatitis (NASH). The mechanisms of NAFLD progression consist of lipid homeostasis alterations, redox unbalance, insulin resistance, and inflammation in the liver. Even though several studies show an association between the levels of lipid oxidation products and disease state, experimental evidence suggests that compounds such as reactive aldehydes and cholesterol oxidation products, in addition to representing hallmarks of hepatic oxidative damage, may behave as active players in liver dysfunction and the development of NAFLD. This review summarizes the processes that contribute to the metabolic alterations occurring in fatty liver that produce fatty acid and cholesterol oxidation products in NAFLD, with a focus on inflammation, the control of insulin signalling, and the transcription factors involved in lipid metabolism.
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Affiliation(s)
- Francesco Bellanti
- C.U.R.E. Centre for Liver Diseases Research and Treatment, Institute of Internal Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia 71122, Italy
| | - Rosanna Villani
- C.U.R.E. Centre for Liver Diseases Research and Treatment, Institute of Internal Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia 71122, Italy
| | - Antonio Facciorusso
- C.U.R.E. Centre for Liver Diseases Research and Treatment, Institute of Internal Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia 71122, Italy
| | - Gianluigi Vendemiale
- C.U.R.E. Centre for Liver Diseases Research and Treatment, Institute of Internal Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia 71122, Italy
| | - Gaetano Serviddio
- C.U.R.E. Centre for Liver Diseases Research and Treatment, Institute of Internal Medicine, Department of Medical and Surgical Sciences, University of Foggia, Foggia 71122, Italy.
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