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Hu L, Velu P, Prabahar K, Hernández-Wolters B, Kord-Varkaneh H, Xu Y. Effect of Vitamin D Supplementation on Lipid Profile in Overweight or Obese Women: A Meta-analysis and Systematic Review of Randomized Controlled Trials. Nutr Rev 2025:nuae226. [PMID: 39873663 DOI: 10.1093/nutrit/nuae226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2025] Open
Abstract
CONTEXT Previous studies have explored the relationship between vitamin D and lipid profile in individuals with obesity or overweight women, but the results have been inconsistent. OBJECTIVE This meta-analysis and systematic review of randomized controlled trials (RCTs) was conducted to assess the effect of vitamin D on lipid profile in women who are overweight or obese. DATA SOURCES A meticulous search strategy was used across the Scopus, PubMed/Medline, Web of Science, and Embase databases up to June 2024. DATA EXTRACTION RCT studies administering vitamin D to overweight or obese women were extracted. A random-effects model was applied to compute the weighted mean difference (WMD) and 95% CIs of the intervention on each variable. DATA ANALYSES Thirteen eligible publications with 16 arms focused on low-density-lipoprotein cholesterol (LDL-C), 16 arms on high-density-lipoprotein cholesterol (HDL-C), 18 arms on total cholesterol (TC), and 18 arms on triglycerides (TG) were included in the final quantitative analysis. Vitamin D supplementation resulted in significant reductions in TG (WMD: -6.13 mg/dL; 95% CI: -8.99 to -3.28; P = .000) and TC (WMD: -4.45 mg/dL; 95% CI: -7.06 to -1.83; P = .001), as well as a significant increase in HDL-C concentrations (WMD: 1.54 mg/dL; 95% CI: 0.57 to 2.52; P = .002). Stratified analysis indicated a greater reduction in TG levels in studies with a mean baseline TG concentration ≥150 mg/dL (WMD: -23.58 mg/dL) and when vitamin D was administered for ≤26 weeks (WMD: -11.44 mg/dL). CONCLUSION According to our findings, vitamin D has a significant effect on hypertriglyceridemia in individuals who are overweight or obese. However, vitamin D has no significant effect on LDL-C concentrations in this population.
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Affiliation(s)
- Li Hu
- Department of Emergency Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 64600, China
| | - Periyannan Velu
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu 608002, India
| | - Kousalya Prabahar
- Department of Pharmacy Practice, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
| | | | - Hamed Kord-Varkaneh
- Department of Nutrition and Food Hygiene, School of Medicine, Nutrition Health Research Center, Hamadan University of Medical Sciences, Hamadan 65156, Iran
| | - Yan Xu
- Department of Emergency Medicine, The Affiliated Hospital, Southwest Medical University, Luzhou, Sichuan 64600, China
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Yu K, Song W, Tu X, Zhou K, Prabahar K. The effect of vitamin D on the lipid profile in individuals with overweight or obesity: A meta-analysis and systematic review of randomized controlled trials. Prostaglandins Other Lipid Mediat 2025; 176:106938. [PMID: 39667430 DOI: 10.1016/j.prostaglandins.2024.106938] [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: 09/07/2024] [Revised: 11/28/2024] [Accepted: 12/09/2024] [Indexed: 12/14/2024]
Abstract
BACKGROUND AND AIM Previous studies have reported on the relationship between vitamin D and the lipid profile in individuals with obesity or overweight, but results have been inconsistent. Hence, we conducted this meta-analysis and systematic review of randomized controlled trials to assess the effect of vitamin D on the lipid profile in individuals with overweight or obesity. METHODS A meticulous search strategy was used in various databases, and article published up to November 2023 were included. The DerSimonian and Laird random effects model was applied to compute the weighted mean difference (WMD) and 95 % confidence intervals (CI) of the intervention on each variable. RESULTS Vitamin D supplementation did not yield significant alterations in LDL-C (WMD: 2.10 mg/dL, CI: -5.20-9.41, p = 0.572), HDL-C (WMD: 1.49 mg/dL, 95 % CI: -1.55-4.55, P = 0.337), and TC concentrations (WMD: -1.99 mg/dL, CI: -8.21-4.22, P = 0.530). Conversely, a significant decrease in TG levels was observed studies conducted in individuals with comorbidities (WMD: -6.03 mg/dL, 95 % CI: -11.92 to -0.15, p = 0.044), vitamin D doses of ≥ 50000 IU/week (WMD: -20.87 mg/dL, 95 % CI: -39.63 to -2.11, P = 0.029), and subjects with baseline TG concentrations ≥ 150 mg/dl (WMD: -25.95 mg/dL, 95 % CI: -51.51 to -0.40, p = 0.046). CONCLUSION According to our study findings, vitamin D has significant effect on the hypertriglyceridemia in individuals with obesity or overweight. However, vitamin D has no significant effect on the LDL-C, HDL-C, and TC concentrations in individuals with obesity or overweight.
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Affiliation(s)
- Kehao Yu
- Medical College of PanZhiHua University, PanZhiHua University, NO.10, Jichang Road, East District, Panzhihua, Sichuan 617000, China.
| | - Wentao Song
- Medical College of Southwest Medical University, No.319, Section 3, Zhongshan Road, Jiangyang District, Luzhou, Sichuan 646000, China
| | - Xinyu Tu
- Medical College of PanZhiHua University, PanZhiHua University, NO.10, Jichang Road, East District, Panzhihua, Sichuan 617000, China
| | - Ke Zhou
- The Second College of Clinical Medicine of Chong Qing Medical University, Chong Qing Medical University, No.61, Middle Road, Shapingba District, Chongqing 400016, China
| | - Kousalya Prabahar
- Department of Pharmacy Practice, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia
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Moieni A, Haghollahi F, Dashtkoohi M, Abiri A, Salari E, Najafi MS, Tajik N. Vitamin D levels and lipid profiles in patients with polycystic ovary syndrome. BMC Womens Health 2024; 24:472. [PMID: 39192256 DOI: 10.1186/s12905-024-03294-7] [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: 02/05/2024] [Accepted: 08/06/2024] [Indexed: 08/29/2024] Open
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women. Dyslipidemia is a prevalent metabolic abnormality in individuals with PCOS. Moreover, vitamin D deficiency is widespread across all societal strata, with a particularly heightened prevalence observed in patients afflicted with PCOS. The present study aimed to investigate the level of vitamin D and its correlation with lipid profiles in Iranian women diagnosed with PCOS. METHODS This cross-sectional study was carried out at the PCOS and infertility clinic of Arash Women's Hospital in Tehran. The study encompassed the medical records of PCOS patients who attended the clinic from March 2021 to December 2023. All patients underwent blood tests, which included assessments of fasting blood sugar levels, lipid profiles, and 25-hydroxyvitamin D (25(OH)D) levels. The investigation focused on evaluating the relationship between vitamin D levels and lipid profiles. Statistical analyses, including the chi-square test and Spearman's correlation coefficient, were employed to analyze the data. RESULTS A total of 1004 women diagnosed with PCOS were included in the study. The age range of the participants was 14 to 46 years. The majority of the participants had a body mass index (BMI) within the normal range (n = 555, 55.3%). The median vitamin D level among the participants was 26.00 (IQR: 19.00-34.00). The relationship between vitamin D levels and lipid profile parameters was assessed, revealing no significant correlation between vitamin D levels and low-density lipoprotein (LDL) (r = 0.021, p = 0.505), high-density lipoprotein (HDL) (r = 0.011, p = 0.719), or triglyceride (TG) (r = -0.026, p = 0.417) levels, both in non-adjusted and age-adjusted analyses. CONCLUSION According to the present study, there was no significant correlation between serum 25(OH)D deficiency and elevated TG or LDL levels or decreased HDL levels in PCOS patients. Nevertheless, further prospective studies are needed to determine whether there is a causal relationship between vitamin D deficiency and lipid profile alterations, specifically among PCOS patients.
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Affiliation(s)
- Ashraf Moieni
- Department of Obstetrics and Gynecology, Endocrinology and Female Infertility Unit, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Breast Disease Research Center (BDRC), Tehran University of Medical Sciences, Tehran, Iran
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Fedyeh Haghollahi
- Vali-E-Asr Reproductive Health Research Center, Family Health Research Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohadese Dashtkoohi
- Vali-E-Asr Reproductive Health Research Center, Family Health Research Institute, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
| | - Amene Abiri
- Department of Obstetrics and Gynecology, Tehran University of Medical Sciences, Tehran, Iran
| | - Elnaz Salari
- Department of Obstetrics and Gynecology, Endocrinology and Female Infertility Unit, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sadeq Najafi
- Cardiovascular Diseases Research Institute, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Nooshan Tajik
- Department of Obstetrics and Gynecology, Arash Women's Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Begga A, Mehaoudi RI, Ghozlani A, Azzoug S, Soltani Y. The risk of metabolic syndrome is associated with vitamin D and inflammatory status in premenopausal and postmenopausal Algerian women. Ir J Med Sci 2024; 193:615-626. [PMID: 37702977 DOI: 10.1007/s11845-023-03516-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/04/2023] [Indexed: 09/14/2023]
Abstract
BACKGROUND This first cross-sectional study examined whether vitamin D status and proinflammatory cytokines may be associated with metabolic syndrome (MetS) in Algerian women regarding their menopausal status. METHODS Fasting plasma glucose (FPG), lipids, insulin, 25(OH)D, PTH, adiponectin, resistin, TNFα, and IL-6 levels were assessed in 277 participants aged 18-74 years. MetS was diagnosed according to NCEP-ATPIII criteria. The association of vitamin D deficiency, IL-6, and TNFα with components of MetS was analyzed by the logistic regression. RESULTS Among a cohort of 277 participants, the prevalence of MetS in 115 premenopausal vs. 162 postmenopausal women was 54.02 vs. 68.1%. Cut-offs for vitamin D deficiency were 15.7 vs. 13 ng/mL, 51.07 vs. 41 pg/mL for IL-6 and 8.28 vs. 9.33 pg/mL for TNFα, respectively. 25(OH)D levels were positively correlated with adiponectin levels, while negatively with HOMA-IR in postmenopausal-MS + women. Adjustment for age and BMI reveals a significant association between vitamin deficiency and high FPG (OR: 2.92 vs. 2.90), TG (OR:2.79 vs. 3.51), BP (OR:2.20 vs. 1.92), and low HDL-c (OR:2.26 vs. 3.42), respectively. A significant association was also detected in postmenopausal women between IL-6 and high FPG (OR5.11, p = 0.03), BP (OR:3.13, p = 0.04), and low HDL-c (OR5.01, p = 0.02), while TNFα was associated with high BP in postmenopausal women (OR: 3.70, p = 0.01), and inversely with TG in premenopausal women (OR: 0.16, p = 0.04). CONCLUSION This study highlighted that severe vitamin D deficiency increases MetS score and was closely associated with four components of MetS, more potently in postmenopausal women, probably related with estrogens. Abdominal obesity, as influential component of MetS, may be involved in enhancing vitamin D deficiency, and dysregulating some metabolic hormones such as adiponectin, resistin and insulin, that contributes in onset an inflammatory state, through the increase in IL-6 and TNFα levels. These findings need to be improved by expanding investigation to a large cohort of participants.
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Affiliation(s)
- Asma Begga
- Endocrinology team, Laboratory of Biology and Physiology, Faculty of Biological Sciences, USTHB, DZ-16111, Algiers, Algeria
| | - Rym-Ikram Mehaoudi
- Endocrinology team, Laboratory of Biology and Physiology, Faculty of Biological Sciences, USTHB, DZ-16111, Algiers, Algeria
| | - Amel Ghozlani
- Endocrinology team, Laboratory of Biology and Physiology, Faculty of Biological Sciences, USTHB, DZ-16111, Algiers, Algeria
| | - Said Azzoug
- Unit of Clinical Endocrinology, IBN ZIRI Hospital, DZ-16082, Algiers, Algeria
- Department of Diabetology, Mustapha Bacha University Hospital Center, DZ-16000, Algiers, Algeria
| | - Yacine Soltani
- Endocrinology team, Laboratory of Biology and Physiology, Faculty of Biological Sciences, USTHB, DZ-16111, Algiers, Algeria.
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Rebelos E, Tentolouris N, Jude E. The Role of Vitamin D in Health and Disease: A Narrative Review on the Mechanisms Linking Vitamin D with Disease and the Effects of Supplementation. Drugs 2023; 83:665-685. [PMID: 37148471 PMCID: PMC10163584 DOI: 10.1007/s40265-023-01875-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 05/08/2023]
Abstract
Vitamin D insufficiency or deficiency (VDD) is a very prevalent condition in the general population. Vitamin D is necessary for optimal bone mineralization, but apart from the bone effects, preclinical and observational studies have suggested that vitamin D may have pleiotropic actions, whereas VDD has been linked to several diseases and higher all-cause mortality. Thus, supplementing vitamin D has been considered a safe and inexpensive approach to generate better health outcomes-and especially so in frail populations. Whereas it is generally accepted that prescribing of vitamin D in VDD subjects has demonstrable health benefits, most randomized clinical trials, although with design constraints, assessing the effects of vitamin D supplementation on a variety of diseases have failed to demonstrate any positive effects of vitamin D supplementation. In this narrative review, we first describe mechanisms through which vitamin D may exert an important role in the pathophysiology of the discussed disorder, and then provide studies that have addressed the impact of VDD and of vitamin D supplementation on each disorder, focusing especially on randomized clinical trials and meta-analyses. Despite there already being vast literature on the pleiotropic actions of vitamin D, future research approaches that consider and circumvent the inherent difficulties in studying the effects of vitamin D supplementation on health outcomes are needed to assess the potential beneficial effects of vitamin D. The evaluation of the whole vitamin D endocrine system, rather than only of 25-hydroxyvitamin D levels before and after treatment, use of adequate and physiologic vitamin D dosing, grouping based on the achieved vitamin D levels rather than the amount of vitamin D supplementation subjects may receive, and sufficiently long follow-up are some of the aspects that need to be carefully considered in future studies.
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Affiliation(s)
- Eleni Rebelos
- Turku PET Centre, University of Turku, Turku, Finland
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Nikolaos Tentolouris
- 1st Department of Propaedeutic and Internal Medicine, Medical School, National and Kapodistrian University of Athens, Laiko General Hospital, Athens, Greece
| | - Edward Jude
- Department of Medicine, Tameside and Glossop Integrated Care NHS Foundation Trust, Ashton-under-Lyne , England.
- University of Manchester, Manchester, UK.
- Manchester Metropolitan University, Manchester, UK.
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Hariri Z, Kord-Varkaneh H, Alyahya N, Prabahar K, Găman MA, Abu-Zaid A. Higher Dietary Vitamin D Intake Influences the Lipid Profile and hs-CRP Concentrations: Cross-Sectional Assessment Based on The National Health and Nutrition Examination Survey. Life (Basel) 2023; 13:581. [PMID: 36836938 PMCID: PMC9965151 DOI: 10.3390/life13020581] [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: 12/13/2022] [Revised: 02/06/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
Background. An unanswered question in the field of nutrition is whether there is an association between vitamin D intake and the lipid profile in adults. We conducted this cross-sectional study in order to investigate the impact of vitamin D intake on the lipid profile of adults in the context of the 2017-2018 National Health and Nutrition Examination Survey (NHANES). Methods. Serum lipids and high-sensitivity C-reactive protein (hs-CRP) concentrations and the Vitamin D intake in 2588 people aged 19 to 70 years was collected using laboratory analysis and 24-h recall, respectively. The one-way ANOVA test was used to compare quantitative variables and the chi-squared test was used to compare qualitative ones. Multivariate logistic regression for three models was performed to assess the odds ratio (OR) of high total cholesterol (TC) (>200 mg/dL), triglycerides (TG) (>150 mg/dL), low-density lipoprotein cholesterol (LDL-C) (>115 mg/dL), high-density lipoprotein cholesterol (HDL-C) (<40 mg/dL) and hs-CRP (>1 mg/l) based on the tertiles of dietary vitamin D (D2 + D3) intake. Results. After adjusting for age, sex, race, body mass index, serum 25-hydroxyvitamin D2, alcohol intake, energy intake, protein intake, carbohydrate intake, fiber intake and fat intake, individuals in the tertile with the highest versus lowest vitamin D intake (>1 mcg/day vs. <0.10 mcg/day) had lower odds of displaying elevated TC, LDL-C and hs-CRP concentrations (OR 0.57; CI: 0.37 to 0.88; P-trend: 0.045, OR 0.59; CI: 0.34 to 1.01; P-trend: 0.025 and OR 0.67; CI: 0.45 to 0.99; P-trend: 0.048, respectively). Based on the results of the logistic regression, no correlation between vitamin D intake and changes in TG or HDL-C values was noted. Conclusions. Our cross-sectional study indicates that higher dietary vitamin D (D2 + D3) intake is associated with lower TC, LDL-C and hs-CRP levels. No relationship between dietary vitamin D intake and TG or HDL-C values was detected. Further large-scale randomized trials are needed to evaluate the actual association between dietary vitamin D intake and the lipid profile.
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Affiliation(s)
- Zahra Hariri
- 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 19839-63113, Iran
| | - Hamed Kord-Varkaneh
- 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 19839-63113, Iran
| | - Noura Alyahya
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
| | - Kousalya Prabahar
- Department of Pharmacy Practice, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
| | - Mihnea-Alexandru Găman
- Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Department of Hematology, Center of Hematology and Bone Marrow Transplantation, Fundeni Clinical Institute, 022328 Bucharest, Romania
| | - Ahmed Abu-Zaid
- College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia
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Kocabas R. Effect of Vitamin D on YKL-40: Rat Hypercholesterolemia Model. Korean Circ J 2023; 53:92-102. [PMID: 36792559 PMCID: PMC9932220 DOI: 10.4070/kcj.2022.0282] [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: 10/06/2022] [Revised: 12/03/2022] [Accepted: 12/27/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVES YKL-40 is considered to be associated with cardiovascular disease (CVD). In this study, the effect of serum 25(OH) vitamin D [25(OH)VitD] differences between groups on YKL-40 was evaluated on a hypercholesterolemia rat model. METHODS Thirty-two male rats (wistar albino) were equally divided into 4 groups. The first group was the control group; the second group was high-cholesterol (H-CH) adequate vitamin D (VitD) group (H-AdeVD). The third group was the H-CH deficient VitD group (H-DefVD), and the last group was designed with the H-CH supplement VitD (H-SupVD). The feeding process consisted of 2 stages. At the first stage (5 months), the H-DefVD group was fed on VitD deficient chow, while the other groups (control, H-AdeVD, H-SupVD) were fed on standard chow. At the second stage (3 months), the H-AdeVD and the H-SupVD groups were fed on the H-CH chow, whereas the H-DefVD group was fed on the H-CH-VitD deficient chow. Moreover, the H-SupVD group was given 100 IU/kg/day VitD along with the H-CH chow. RESULTS Compared with the control group, interleukin-6 (IL-6), soluble intercellular adhesion molecule-1 (sICAM-1), soluble vascular cell adhesion molecule-1 (sVCAM-1), and YKL-40 values in the H-DefVD groups increased significantly (p<0.001, p<0.001, p=0.009, p=0.005; sequentially). CONCLUSION It can be concluded that VitD can suppress the YKL-40, thus, it will prevent CVD development in rat. Therefore, further clinical studies related with human will reveal the effect of VitD and YKL-40 on CVD development.
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Affiliation(s)
- Rahim Kocabas
- Department of Biochemistry, Karamano\xc4\x9flu Mehmetbey University School of Medicine, Karaman, Turkey.
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Faghfouri AH, Faghfuri E, Maleki V, Payahoo L, Balmoral A, Khaje Bishak Y. A comprehensive insight into the potential roles of VDR gene polymorphism in obesity: a systematic review. Arch Physiol Biochem 2022; 128:1645-1657. [PMID: 32620057 DOI: 10.1080/13813455.2020.1788097] [Citation(s) in RCA: 2] [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] [Indexed: 12/11/2022]
Abstract
Vitamin D receptor (VDR) gene polymorphisms are believed to be involved in the obesity pathogenesis. This study summarises the results of research concerning the association between VDR polymorphisms and obesity. For this survey, the records of common databases were searched until November 2019. Four loci of the VDR gene in four case-controlled and 22 cross-sectional studies were assessed and evaluated. In the case-control studies, no significant association was observed between ApaI and FokI polymorphism with obesity risk. TaqI "T" allele in two studies was related to a higher risk of obesity. One investigation found no relationship between BsmI and obesity, while another article suggested that the "b" allele is more frequently found in obese subjects. The results of cross-sectional studies did not lead to consistent findings. Although the previous studies failed to arrive at conclusive findings, the effects of VDR polymorphism on obesity development cannot be ignored.
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Affiliation(s)
| | - Elnaz Faghfuri
- Digestive Disease Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Vahid Maleki
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Nutrition Research Center, Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Laleh Payahoo
- Department of Nutrition, Maragheh University of Medical Sciences, Maragheh, Iran
| | | | - Yaser Khaje Bishak
- Department of Nutrition, Maragheh University of Medical Sciences, Maragheh, Iran
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Qorbani M, Zarei M, Moradi Y, Appannah G, Djalainia S, Pourrostami K, Ejtahed HS, Mahdavi-Gorabi A, Naderali EK, Khazdouz M. Effect of vitamin D supplementation on cardiac-metabolic risk factors in elderly: a systematic review and meta-analysis of clinical trials. Diabetol Metab Syndr 2022; 14:88. [PMID: 35752843 PMCID: PMC9233853 DOI: 10.1186/s13098-022-00859-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND There has been a longstanding interest in the potential effect of vitamin D in preventing cardiac-metabolic diseases. However, there are divergent results regarding the impact of vitamin D supplementation (VDS) on managing cardiac-metabolic outcomes in the elderly population. MATERIAL AND METHOD We systematically searched electronic databases; Web of Science, PubMed, Scopus, EMBASE, Cochrane, and ProQuest. We included all trials that evaluated the effect of VDS on cardiac-metabolic risk factors in the elderly population, which were published until 30 September 2021. The effects of VDS on cardiac-metabolic outcomes were assessed using standardized mean difference (SMD). A random-effect model was used to pool the SMD and 95% confidence interval (CI). RESULT The literature search identified 4409 studies, of which 12 trials met inclusion criteria. Results of random effect meta-analysis indicated a significant reduction in total cholesterol (TC) (SMD: - 0.14 mg/dl; 95% CI: - 0.25, - 0.02) and triglyceride (TG) (SMD: - 0.45 mg/dl; 95% CI: - 0.86, - 0.04) with VDS compared to the placebo. The subgroup analyses revealed that the reduction of TG in patients with diabetes and vitamin D deficiency was significant. Furthermore, short-term intervention (≤ 6 months) induced a significantly lower level of TG and insulin in comparison to longer duration (> 6 months). CONCLUSION The study suggests that VDS could improve insulin concentration and dyslipidemia in the elderly population. The systematic review was registered in Alborz university of medical sciences with 2060-01-03-1397 number and the Ethics council IR.ABZUMS.REC.1397.207 number.
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Affiliation(s)
- Mostafa Qorbani
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Zarei
- Department of Nutrition Community, Deputy of Health affairs, Ministry of Health and Medical Education, Tehran, Iran
| | - Yousef Moradi
- Social Determinants of Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Department of Epidemiology and Biostatistics, Faculty of Medicine, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Geeta Appannah
- Department of Nutrition, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor Malaysia
| | - Shirin Djalainia
- Development of Research & Technology Center, Deputy of Research and Technology, Ministry of Health and Medical Education, Tehran, Iran
| | - Kumars Pourrostami
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hanieh-Sadat Ejtahed
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Armita Mahdavi-Gorabi
- Social Determinants of Health Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | | | - Maryam Khazdouz
- Growth and Development Research Center, Children’s Medical Center, Tehran University of Medical Sciences, Tehran, Iran
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Monocyte-to-HDL Ratio (MHR) Predicts Vitamin D Deficiency in Healthy and Metabolic Women: A Cross-Sectional Study in 1048 Subjects. Nutrients 2022; 14:nu14020347. [PMID: 35057532 PMCID: PMC8778051 DOI: 10.3390/nu14020347] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/05/2022] [Accepted: 01/11/2022] [Indexed: 12/20/2022] Open
Abstract
Vitamin D deficiency is often linked with Metabolic Syndrome, both being more frequent with ageing and associated with an increase inflammatory state. Recently, monocytes-to-high density lipoprotein (HDL) ratio (MHR) has emerged as a powerful index to predict systemic inflammation. In this cross-sectional study, we investigated the association between circulating vitamin D level (25-OH vitamin D) and inflammatory status in a population of 1048 adult individuals. Our study reveals an inverse association between 25-OH vitamin D levels and MHR in the overall population. When the population is stratified by gender, waist circumference, and body mass index (BMI), we observed that while in men this relation is strongly significative only in condition of central obesity, in women a lifelong negative correlation exists between circulating 25-OH vitamin D and MHR and it is independent of the metabolic status. These observations underscore the relevance of circulating biomarkers such as MHR in the prediction of systemic inflammatory conditions sustained by vitamin D deficiency also in healthy and young women.
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Pokhrel S, Giri N, Pokhrel R, Pardhe BD, Lamichhane A, Chaudhary A, Bhatt MP. Vitamin D deficiency and cardiovascular risk in type 2 diabetes population. Open Life Sci 2021; 16:464-474. [PMID: 34017921 PMCID: PMC8114957 DOI: 10.1515/biol-2021-0050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/09/2021] [Accepted: 04/13/2021] [Indexed: 11/28/2022] Open
Abstract
This study aims to assess vitamin D deficiency-induced dyslipidemia and cardiovascular disease (CVD) risk in poor glycemic control among type 2 diabetes mellitus (T2DM) patients. This study was carried out among 455 T2DM patients involving poor glycemic control (n = 247) and good glycemic control (n = 208). Fasting plasma glucose (FPG) and HbA1c were measured to assess glycemic control. Cardiac risk ratio, atherogenic index plasma, and atherogenic coefficient were calculated to assess and compare the CVD risk in different groups. Patients with poor control had a significantly higher level of total cholesterol (TC), triglyceride (TG), and non-high-density lipoprotein lipase cholesterol (non-HDL-C), atherogenic variables, and lower level of high-density lipoprotein lipase cholesterol (HDL-C) as compared to patients with good glycemic control. We also observed significant negative correlation of vitamin D with lipid markers and atherogenic variables in poor glycemic control diabetic population. The serum vitamin D levels were inversely associated with HbA1c, FPG, TG, TC, and non-HDL-C. Furthermore, hypercholesterolemia, hypertriglyceridemia, and elevated non-HDL-C were the independent risks in hypovitaminosis D population. Vitamin D deficiency in poor glycemic control is likely to develop dyslipidemia as compared to vitamin D insufficient and sufficient groups. Thus, vitamin D supplementation and an increase in exposure to sunlight may reduce the risk of cardiovascular complications in diabetes.
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Affiliation(s)
- Sushant Pokhrel
- Department of Laboratory Medicine, Manmohan Memorial Institute of Health Sciences, P. O. Box No. 15201, Kathmandu, Nepal
- Department of Genetics, National academy of Medical Sciences, Bir Hospital, Kathmandu, Nepal
| | - Nisha Giri
- Department of Laboratory Medicine, Manmohan Memorial Institute of Health Sciences, P. O. Box No. 15201, Kathmandu, Nepal
| | - Rakesh Pokhrel
- Department of Biochemistry, Institute of Medicine, Maharajgunj Medical Campus, Kathmandu, Nepal
| | - Bashu Dev Pardhe
- Department of Life Science and Biochemical Engineering, Sun Moon University, Asan-Si, Chumgnam, South Korea
| | - Anit Lamichhane
- Department of Laboratory Medicine, Manmohan Memorial Institute of Health Sciences, P. O. Box No. 15201, Kathmandu, Nepal
| | - Abhisek Chaudhary
- Department of Clinical Pathology, Modern Diagnostic Laboratory and Research Center, Kathmandu, Nepal
| | - Mahendra Prasad Bhatt
- Department of Laboratory Medicine, Manmohan Memorial Institute of Health Sciences, P. O. Box No. 15201, Kathmandu, Nepal
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12
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Efficacy of Mesenchymal Stem Cell and Vitamin D in the Treatment of Diabetes Mellitus Induced in a Rat Model: Pancreatic Tissues. COATINGS 2021. [DOI: 10.3390/coatings11030317] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Treatment with mesenchyme stem cells (MSCs) plays a significant role in the therapies of many diseases such as diabetics. Vitamin D plays a significant role in the development of insulin and can increase the insulin action sensitivity of peripheral tissues. Moreover, there is limited research concerning the mechanism of the therapeutic action of MSCs with the combination of vitamin D (vit. D). Therefore, we evaluated the effect of MSC intervention in a diabetic animal model. Diabetes was induced by streptozotocin (STZ) injection at a dose of 50 mg/kg in adult male rats The diabetic rats were injected with MSCs derived from bone marrow (2 × 106 per rat), either alone or in combination with vit. D through the tail vein for four weeks. Serum insulin, glucose, C-peptide, glycosylated hemoglobin, and lipid profile levels were determined. Pancreatic oxidative stress, histology, and electron microscopy were evaluated, and the gene expression of cytokines was assessed by real-time polymerase chain reaction PCR. MSC treatment suppressed pancreatic inflammatory cytokine secretion and oxidative stress in diabetic rats, resulting in improved pancreatic histology and cellular structure, and the complication of hyperglycemia was observed. Engrafted MSCs were found inside degraded pancreatic regions and regulated inflammatory cytokines. Our results demonstrated that treatment with MSCs and vit. D in combination prevented pancreatic injury via antioxidant and immune regulation in diabetic rats, contributing to the prevention of pancreatic dysfunction, improvement of lipid metabolism, and regulation of cytokine gene expression compared with each one separately. All these mechanisms also improved the histological structure of the pancreas based on transmission electron microscopy. The combination of MSCs and vit. D appears to have contributed to a greater improvement in the diabetic pancreatic complication of rats than was observed by each one separately. Therefore, this association can be used as antidiabetic therapy.
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Refat MS, Hamza RZ, Adam AMA, Saad HA, Gobouri AA, Al-Harbi FS, Al-Salmi FA, Altalhi T, El-Megharbel SM. Quercetin/Zinc complex and stem cells: A new drug therapy to ameliorate glycometabolic control and pulmonary dysfunction in diabetes mellitus: Structural characterization and genetic studies. PLoS One 2021; 16:e0246265. [PMID: 33661932 PMCID: PMC7932096 DOI: 10.1371/journal.pone.0246265] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 01/18/2021] [Indexed: 02/06/2023] Open
Abstract
Medicinal uses and applications of metals and their complexes are of increasing clinical and commercial importance. The ligation behavior of quercetin (Q), which is a flavonoid, and its Zn (II) (Q/Zn) complex were studied and characterized based on elemental analysis, molar conductance, Fourier-transform infrared (FTIR) spectra, electronic spectra, proton nuclear magnetic resonance (1H-NMR), thermogravimetric analysis, and transmission electron microscopy (TEM). FTIR spectral data revealed that Q acts as a bidentate ligand (chelating ligand) through carbonyl C(4) = O oxygen and phenolic C(3)-OH oxygen in conjugation with Zn. Electronic, FTIR, and 1H-NMR spectral data revealed that the Q/Zn complex has a distorted octahedral geometry, with the following chemical formula: [Zn(Q)(NO3)(H2O)2].5H2O. Diabetes was induced by streptozotocin (STZ) injection. A total of 70 male albino rats were divided into seven groups: control, diabetic untreated group and diabetic groups treated with either MSCs and/or Q and/or Q/Zn or their combination. Serum insulin, glucose, C-peptide, glycosylated hemoglobin, lipid profile, and enzymatic and non-enzymatic antioxidant levels were determined. Pancreatic and lung histology and TEM for pancreatic tissues in addition to gene expression of both SOD and CAT in pulmonary tissues were evaluated. MSCs in combination with Q/Zn therapy exhibited potent protective effects against STZ induced hyperglycemia and suppressed oxidative stress, genotoxicity, glycometabolic disturbances, and structural alterations. Engrafted MSCs were found inside pancreatic tissue at the end of the experiment. In conclusion, Q/Zn with MSC therapy produced a synergistic effect against oxidative stress and genotoxicity and can be considered potential ameliorative therapy against diabetes with pulmonary dysfunction, which may benefit against COVID-19.
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Affiliation(s)
- Moamen S. Refat
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
- Department of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt
| | - Reham Z. Hamza
- Biology Department, Faculty of Science, Taif University, Taif, Saudi Arabia
- Zoology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Abdel Majid A. Adam
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Hosam A. Saad
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Adil A. Gobouri
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
| | | | | | - Tariq Altalhi
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
| | - Samy M. El-Megharbel
- Department of Chemistry, College of Sciences, Taif University, Taif, Saudi Arabia
- Department of Chemistry, Faculty of Science, Zagazig University, Zagazig, Egypt
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14
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Jin B, Qian L, Fu X, Zhu J, Shu J. Influence of vitamin D supplementation on lipid levels in polycystic ovary syndrome patients: a meta-analysis of randomized controlled trials. J Int Med Res 2020; 48:300060520935313. [PMID: 32776821 PMCID: PMC7418257 DOI: 10.1177/0300060520935313] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/28/2020] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Observational studies have shown that circulating vitamin D (VitD) deficiency is associated with atherogenic lipid patterns among polycystic ovary syndrome (PCOS) patients. However, interventional studies have shown inconsistent results. The aim of this meta-analysis was to investigate how VitD supplementation influences lipid indices in PCOS patients. METHODS The authors searched four electronic databases through August 2019 to identify randomized controlled trials (RCTs) that assessed the effect of VitD intervention on serum lipids among PCOS patients. Mean differences were generated for statistical evaluation. RESULTS We included eight studies and performed nine comparisons across 467 participants. VitD supplementation reduced serum triglyceride levels (-11.88 mg/dL; 95% confidence interval [CI]: -17.03 to -6.73), total cholesterol (-9.09 mg/dL; 95% CI: -14.90 to -3.29), low-density lipoprotein cholesterol (-5.22 mg/dL; 95% CI: -10.32 to -0.13), and very-low-density lipoprotein cholesterol (-2.43 mg/dL; 95% CI: -3.69 to -1.17) compared with no VitD supplementation. However, high-density lipoprotein cholesterol levels showed no differences with or without VitD supplementation (-0.39 mg/dL; 95% CI: -1.39 to 0.61). CONCLUSIONS VitD supplementation improved serum lipid levels among PCOS patients, but serum high-density lipoprotein cholesterol levels were not changed. VitD intervention might benefit PCOS patients who are at high risk of an atherogenic lipid profile.
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Affiliation(s)
- Bihui Jin
- Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Lingbo Qian
- School of Basic Medical Sciences & Forensic Medicine, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Xiaohua Fu
- Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jing Zhu
- Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jing Shu
- Department of Reproductive Endocrinology, Zhejiang Provincial People’s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, China
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15
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Bahrami LS, Ranjbar G, Norouzy A, Arabi SM. Vitamin D supplementation effects on the clinical outcomes of patients with coronary artery disease: a systematic review and meta-analysis. Sci Rep 2020; 10:12923. [PMID: 32737345 PMCID: PMC7395726 DOI: 10.1038/s41598-020-69762-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 07/15/2020] [Indexed: 11/30/2022] Open
Abstract
In this systematic review and meta-analysis our aim was to assess the effect of vitamin D supplementation on cardiac outcomes in patients with coronary artery disease (CAD). The search terms were performed from January 2000 to January 2018, only randomized clinical trials (RCT) in human subjects were considered, with no language restrictions. The electronic databases used in this study were: PubMed; Cochran library; Embase; and Scopus. Two independent expert reviewers carried out data extraction according to Cochrane recommendations. Only four RCTs were found in relation to the effects of vitamin D supplementation on the coronary artery disease. In these 299 patients, vitamin D supplementation had significant favorable effects on Diastolic Blood Pressure (DBP) (- 2.96, p = 0.02) and Parathyroid hormone (PTH) (- 4.05, p < 0.001). However, it had no significant effects on hs-CRP mean difference (- 0.04, p = 0.25), total cholesterol (TC) (- 0.46, p = 0.83), triglyceride (TG) (0.68, p = 0.89), low-density lipoproteins (LDL) (2.08, p = 0.56), and high-density lipoproteins (HDL) (- 2.59, p = 0.16). In conclusion, the use of vitamin D was associated with improvements in some cardiac outcomes of CAD patients with vitamin D deficiency. Also, further research is needed to clarify these results.
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Affiliation(s)
- Leila Sadat Bahrami
- Department of Nutrition, Faculty of Medicine, Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Golnaz Ranjbar
- Department of Nutrition, Faculty of Medicine, Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Abdolreza Norouzy
- Department of Nutrition, Faculty of Medicine, Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyyed Mostafa Arabi
- Department of Nutrition, Faculty of Medicine, Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran.
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16
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Yarparvar A, Elmadfa I, Djazayery A, Abdollahi Z, Salehi F, Heshmat R. The Effects of Vitamin D Supplementation on Lipid and Inflammatory Profile of Healthy Adolescent Boys: A Randomized Controlled Trial. Nutrients 2020; 12:E1213. [PMID: 32344842 PMCID: PMC7282007 DOI: 10.3390/nu12051213] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Deficiency of vitamin D, an anti-inflammatory micronutrient with some favorable effects on lipid profiles, has been found to be highly prevalent in adolescents. We aimed to investigate the effect of a school-based vitamin D supplementation regimen on the correction of vitamin D deficiency as well as lipid and inflammatory profiles of healthy adolescent boys. METHODS In this randomized single-blind placebo-controlled trial, seventy-one healthy adolescent boys (age 17 years old) were recruited from one high school in Tehran, Iran, and randomly assigned to two groups. The supplement group received vitamin D pearls at a dose of 50,000 IU monthly for 6 months, this dose is indeed defined by the Ministry of Health in Iran for a potential national school-based vitamin D supplementation program. The other group was given placebo pearls for the same duration. Before and after the treatment, the serum levels of 25-hydroxy vitamin D (25(OH) D), parathyroid hormone (PTH), retinol, lead (Pb), the lipid profile and the inflammatory biomarkers were measured and compared. RESULTS Between-groups statistical analysis showed that a dose (50,000 IU/month) vitamin D significantly increased the serum levels of 25-hydroxyvitamin D (25 (OH) D) (p < 0.001) and decreased serum levels of PTH (p = 0.003). No significant change was observed in serum levels of retinol and Pb. Between-group analysis revealed that the serum levels of TG (P = 0.001) decreased while an increase in serum levels of HDL (p = 0.021) was observed (p < 0.05). Both the within- and between-group analysis showed that serum tumor necrosis factor receptor 2 (TNFR2) concentration declined while serum interleukin-10 (IL-10) increased in response to vitamin D supplementation (p < 0.05). CONCLUSION A supplementation regimen of (50,000 IU/month) vitamin D in a context with high rates of vitamin deficiency has shown positive impacts on the serum vitamin D, lipid profile and inflammatory biomarkers in healthy adolescent boys.
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Affiliation(s)
- Amirhossein Yarparvar
- School of Nutrition, University of Vienna, 1090 Vienna, Austria;
- Health and Nutrition Specialist, Health and Nutrition Department for UNICEF Regional Office for Europe and Central Asia, Almaty 050000, Kazakhstan
| | - Ibrahim Elmadfa
- School of Nutrition, University of Vienna, 1090 Vienna, Austria;
| | - Abolghasem Djazayery
- School of Nutrition and Dietetics, Tehran University of Medical Science, Tehran 14155/6117, Iran;
| | - Zahra Abdollahi
- Nutrition Department of the Ministry of health and Medical Education, Tehran 1467664961, Iran;
| | - Forouzan Salehi
- Deputy Director of Family Health Department of the Ministry of Health and Medical Education, Tehran 1467664961, Iran;
| | - Ramin Heshmat
- Ramin Heshmat, Tehran University of Medical Sciences, Tehran 141675395, Iran;
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Noh K, Yang QJ, Sekhon L, Quach HP, Chow ECY, Pang KS. Noteworthy idiosyncrasies of 1α,25-dihydroxyvitamin D 3 kinetics for extrapolation from mouse to man: Commentary. Biopharm Drug Dispos 2020; 41:126-148. [PMID: 32319119 DOI: 10.1002/bdd.2223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/30/2020] [Accepted: 03/06/2020] [Indexed: 12/17/2022]
Abstract
Calcitriol or 1,25-dihydroxyvitamin D3 [1,25(OH)2 D3 ] is the active ligand of the vitamin D receptor (VDR) that plays a vital role in health and disease. Vitamin D is converted to the relatively inactive metabolite, 25-hydroxyvitamin D3 [25(OH)D3 ], by CYP27A1 and CYP2R1 in the liver, then to 1,25(OH)2 D3 by a specific, mitochondrial enzyme, CYP27B1 (1α-hydroxylase) that is present primarily in the kidney. The degradation of both metabolites is mostly carried out by the more ubiquitous mitochondrial enzyme, CYP24A1. Despite the fact that calcitriol inhibits its formation and degradation, allometric scaling revealed strong interspecies correlation of the net calcitriol clearance (CL estimated from dose/AUC∞ ), production rate (PR), and basal, plasma calcitriol concentration with body weight (BW). PBPK-PD (physiologically based pharmacokinetic-pharmacodynamic) modeling confirmed the dynamic interactions between calcitriol and Cyp27b1/Cyp24a1 on the decrease in the PR and increase in CL in mice. Close scrutiny of the literature revealed that basal levels of calcitriol had not been taken into consideration for estimating the correct AUC∞ and CL after exogenous calcitriol dosing in both animals and humans, leading to an overestimation of AUC∞ and underestimation of the plasma CL. In humans, CL was decreased in chronic kidney disease but increased in cancer. Collectively, careful pharmacokinetic data analysis and improved definition are achieved with PBPK-PD modeling, which embellishes the complexity of dose, enzyme regulation, and disease conditions. Allometric scaling and PBPK-PD modeling were applied successfully to extend the PBPK model to predict calcitriol kinetics in cancer patients.
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Affiliation(s)
- Keumhan Noh
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
| | - Qi Joy Yang
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
| | - Lavtej Sekhon
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
| | - Holly P Quach
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
| | - Edwin C Y Chow
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
| | - K Sandy Pang
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, M5S 3M2, Canada
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18
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Wang D, Hiebl V, Xu T, Ladurner A, Atanasov AG, Heiss EH, Dirsch VM. Impact of natural products on the cholesterol transporter ABCA1. JOURNAL OF ETHNOPHARMACOLOGY 2020; 249:112444. [PMID: 31805338 DOI: 10.1016/j.jep.2019.112444] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 11/13/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In different countries and areas of the world, traditional medicine has been and is still used for the treatment of various disorders, including chest pain or liver complaints, of which we now know that they can be linked with altered lipid and cholesterol homeostasis. As ATP-binding cassette transporter A1 (ABCA1) plays an essential role in cholesterol metabolism, its modulation may be one of the molecular mechanisms responsible for the experienced benefit of traditional recipes. Intense research activity has been dedicated to the identification of natural products from traditional medicine that regulate ABCA1 expression. AIMS OF THE REVIEW This review surveys natural products, originating from ethnopharmacologically used plants, fungi or marine sources, which influence ABCA1 expression, providing a reference for future study. MATERIALS AND METHODS Information on regulation of ABCA1 expression by natural compounds from traditional medicine was extracted from ancient and modern books, materia medica, and electronic databases (PubMed, Google Scholar, Science Direct, and ResearchGate). RESULTS More than 60 natural compounds from traditional medicine, especially traditional Chinese medicine (TCM), are reported to regulate ABCA1 expression in different in vitro and in vivo models (such as cholesterol efflux and atherosclerotic animal models). These active compounds belong to the classes of polyketides, terpenoids, phenylpropanoids, tannins, alkaloids, steroids, amino acids and others. Several compounds appear very promising in vivo, which need to be further investigated in animal models of diseases related to ABCA1 or in clinical studies. CONCLUSION Natural products from traditional medicine constitute a large promising pool for compounds that regulate ABCA1 expression, and thus may prevent/treat diseases related to cholesterol metabolism, like atherosclerosis or Alzheimer's disease. In many cases, the molecular mechanisms of these natural products remain to be investigated.
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Affiliation(s)
- Dongdong Wang
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria; The Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Fei Shan Jie 32, 550003, Guiyang, China
| | - Verena Hiebl
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria
| | - Tao Xu
- The Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Fei Shan Jie 32, 550003, Guiyang, China
| | - Angela Ladurner
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria
| | - Atanas G Atanasov
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria; Department of Molecular Biology, Institute of Genetics and Animal Breeding of the Polish Academy of Sciences, ul. Postepu 36A, 05-552, Jastrzębiec, Poland; Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchevstr., 1113, Sofia, Bulgaria
| | - Elke H Heiss
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria
| | - Verena M Dirsch
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.
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Hassan F, El-Said ESES, El-sayed GR, El-Sayed SAES, Awadin WF. Vitamin D dietary supplementation ameliorates the complications associated with type 2 diabetes induced by streptozotocin. ACTA ACUST UNITED AC 2020. [DOI: 10.1007/s00580-020-03093-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Hafez M, Musa N, Abdel Atty S, Ibrahem M, Abdel Wahab N. Effect of Vitamin D Supplementation on Lipid Profile in Vitamin D-Deficient Children with Type 1 Diabetes and Dyslipidemia. Horm Res Paediatr 2020; 91:311-318. [PMID: 31266036 DOI: 10.1159/000500829] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 05/08/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Vitamin D (VD) was suggested to have both direct and indirect effects on modifying lipid profile in patients with diabetes through its regulatory action that increases the activity of lipoprotein lipase in adiposity. OBJECTIVES To detect the relationship between serum 25-hydroxyvitamin D (25OHD) and lipid profiles in dyslipidemic T1D patients and study the effect of VD supplementation on lipid profiles of VD-deficient T1D patients. METHODS Fifty patients with T1D (for >2 years) and dyslipidemia were included. 25OHD was assessed and patients were divided accordingly into 2 groups: VD sufficiency (>30 ng/mL) and VD deficiency (VDD) or insufficiency (<29 ng/mL) who were allocated to VD3 supplementation for 4 months, then lipid profile was reevaluated in both groups. RESULTS Thirty patients had VDD, while 20 patients had VD sufficiency. There was no significant correlation between 25OHD and different study parameters (p > 0.05). A significant difference was found among both groups in the family history of coronary heart disease (p = 0.036) and free tetraiodothyronine 4 (p = 0.035). After 4 months of VD supplementation in VDD group, the mean difference (at 0 and 4 months) in low-density lipoproteins (LDL) and hemoglobin A1c (HbA1c) was statistically significant (p = 0.02 and 0.04 respectively) between both groups. The mean basal LDL was 126.91 mg/dL in VDD group that improved to 117.13 mg/dL after 4 months of VD therapy with a mean difference of -9.7 mg/dL compared to a mean difference of -2 mg/dL in VD sufficiency group. CONCLUSIONS VDD was highly prevalent in patients with T1D. There was no significant correlation between 25OHD levels and lipid profile in patients with T1D. VD supplementation for 4 months had a significant lowering effect on LDL and HbA1c.
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Affiliation(s)
- Mona Hafez
- Diabetes, Endocrine and Metabolism Pediatric Unit, Children Hospital, Cairo University, Cairo, Egypt
| | - Noha Musa
- Diabetes, Endocrine and Metabolism Pediatric Unit, Children Hospital, Cairo University, Cairo, Egypt,
| | - Sahar Abdel Atty
- Department of Chemical Pathology, Cairo University, Cairo, Egypt
| | - Mohamed Ibrahem
- Department of Clinical Biochemistry, Cairo University, Cairo, Egypt
| | - Nehal Abdel Wahab
- Diabetes, Endocrine and Metabolism Pediatric Unit, Children Hospital, Cairo University, Cairo, Egypt
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Yang K, Liu J, Fu S, Tang X, Ma L, Sun W, Niu Y, Jing G, Niu Q. Vitamin D Status and Correlation with Glucose and Lipid Metabolism in Gansu Province, China. Diabetes Metab Syndr Obes 2020; 13:1555-1563. [PMID: 32440184 PMCID: PMC7216298 DOI: 10.2147/dmso.s249049] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/17/2020] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE To investigate the relationship between serum 25-hydroxyvitamin D [25(OH)D] levels and blood glucose and lipid levels in people over 18 years of age in Gansu, China. SUBJECTS AND METHODS A total of 1928 volunteers (958 males and 970 females) were selected. The prevalence of abnormal glucose metabolism and lipid metabolism in the vitamin D deficiency group (<20 ng/mL) and the non-vitamin D deficiency group (≥20 ng/mL) were compared. The correlations between serum 25(OH)D and blood glucose and lipid were analyzed. RESULTS A total of 1681 patients had 25(OH)D deficiency, with an overall prevalence of 87.2% (82.9% in males and 91.4% in females). The levels of 25(OH)D in the diabetic group and the IGT/IFG group were significantly lower than that in the normal group. The level of 25(OH)D was significantly lower in the dyslipidemia group than that in the normal group, and was significantly lower in the fasting plasma glucose (FPG) ≥5.6 mmol/L group than that in the FPG <5.6 mmol/L group (p=0.002). The 25(OH)D level in the serum triglyceride (TG) ≥1.7 mmol/L group was significantly lower than that of the TG <1.7 mmol/L group (p=0.0274). The age, heart rate, TG, TC, FPG and H2PG levels in the vitamin D deficiency group were significantly higher than those in the non-vitamin D deficiency group (p<0.05). The prevalence of FPG ≥5.6 mmol/L in the vitamin D deficiency group was higher than that in the non-vitamin D deficiency group (23.5% vs 16.6%, p=0.016). Multiple linear regression analysis suggested that serum 25(OH)D levels were independently correlated with gender, age, FPG, TG and heart rate (β=-0.218, -0.129, -0.075, β=-0.103, -0.058, all p<0.05). CONCLUSION The incidences of dyslipidemia and dysglycemia were higher in the vitamin D deficiency group. The vitamin D level was independently and negatively correlated with FPG and TC, but not with waist circumference, BMI and blood pressure.
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Affiliation(s)
- Kaili Yang
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Jingfang Liu
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
- Correspondence: Jingfang Liu Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou730000, Gansu, Peoples’ Republic of ChinaTel +86-931-8356242 Email
| | - Songbo Fu
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Xulei Tang
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Lihua Ma
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Weiming Sun
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Ying Niu
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Gaojing Jing
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
| | - Qianglong Niu
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu730000, People’s Republic of China
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Bahrami A, Mehramiz M, Ghayour-Mobarhan M, Bahrami-Taghanaki H, Sadeghi Ardekani K, Tayefi M, Sadeghzade M, Rashidmayvan M, Safari Ghalezou M, Ferns GA, Avan A, Sadeghnia HR. A genetic variant in the cytochrome P450 family 2 subfamily R member 1 determines response to vitamin D supplementation. Clin Nutr 2019; 38:676-681. [DOI: 10.1016/j.clnu.2018.03.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 03/14/2018] [Accepted: 03/31/2018] [Indexed: 12/31/2022]
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Rodríguez-Carrio J, Alperi-López M, Naves-Díaz M, Dusso A, López P, Ballina-García FJ, Cannata-Andía JB, Suárez A. Vitamin D Receptor Polymorphism and DHCR7 Contribute to the Abnormal Interplay Between Vitamin D and Lipid Profile in Rheumatoid Arthritis. Sci Rep 2019; 9:2546. [PMID: 30796319 PMCID: PMC6385268 DOI: 10.1038/s41598-019-38756-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/09/2019] [Indexed: 01/08/2023] Open
Abstract
Emerging evidence suggests a role for 7-dehydrocholesterol reductase (DHCR7) in the crosstalk between cholesterol and vitamin D. Our aim was to evaluate the impact of vitamin D-related polymorphisms and DHCR7 levels in the association between vitamin D deficiency and altered lipid profile in rheumatoid arthritis (RA). Serum 25(OH)-vitamin D, DHCR7 levels and vitamin D-related polymorphisms (VDR-rs2228570, CYP27A1-rs933994, CYP2R1-rs10741657 and DHCR7-rs12785878) were analyzed in 211 RA patients,94 controls and in a prospective cohort of 13 RA patients undergoing TNFα-blockade. Vitamin D was decreased in RA (p < 0.001), correlated to HDL-cholesterol (r = 0.217, p < 0.001) and total-/HDL-cholesterol ratio (r = -0.227, p = 0.004). These correlations were restricted to the VDR-rs2228570 status. Vitamin D deficiency was associated with lower HDL-cholesterol (p = 0.028), higher tender (p = 0.005) and swollen (p = 0.002) joint counts, higher DAS28 (p = 0.018) and HAQ (p = 0.024) in AG/AA-patients but not in their GG-counterparts. The associations among DHCR7, vitamin D and lipid profile followed a seasonal pattern, decreased DHCR7 (p = 0.008) and vitamin D (p < 0.001) and increased total-cholesterol (p = 0.025) being found in winter/spring. Increasing vitamin D upon TNFα-blockade paralleled RA clinical improvement (r = -0.610, p = 0.027) and DHCR7 elevation (r = 0.766, p = 0.002). In conclusion, vitamin D-related polymorphisms and DHCR7 are pivotal to understand the complex, seasonal associations between vitamin D and lipid profile in RA.
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Affiliation(s)
- Javier Rodríguez-Carrio
- Area of Immunology, Department of Functional Biology, University of Oviedo, Oviedo, Spain.,Bone and Mineral Research Unit, REDinREN del ISCIII, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Mercedes Alperi-López
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.,Department of Rheumatology, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Manuel Naves-Díaz
- Bone and Mineral Research Unit, REDinREN del ISCIII, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Adriana Dusso
- Bone and Mineral Research Unit, REDinREN del ISCIII, Hospital Universitario Central de Asturias, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Patricia López
- Area of Immunology, Department of Functional Biology, University of Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
| | - Francisco Javier Ballina-García
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.,Department of Rheumatology, Hospital Universitario Central de Asturias, Oviedo, Spain
| | - Jorge B Cannata-Andía
- Bone and Mineral Research Unit, REDinREN del ISCIII, Hospital Universitario Central de Asturias, Oviedo, Spain. .,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain.
| | - Ana Suárez
- Area of Immunology, Department of Functional Biology, University of Oviedo, Oviedo, Spain.,Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain
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Association of vitamin D deficiency with insulin resistance in middle-aged type 2 diabetics. Clin Chim Acta 2019; 492:95-101. [PMID: 30772337 DOI: 10.1016/j.cca.2019.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 01/24/2023]
Abstract
BACKGROUND Vitamin D deficiency contributes to the pathophysiology of insulin resistance (IR) and type 2 diabetes mellitus (T2DM). We investigated the association of 25-hydroxyvitamin D [25(OH)D] with IR and β-cell function in middle-aged participants. METHODS We enrolled 90 controls and 90 T2DM patients of both genders aged 30-50 years. Serum 25(OH)D, fasting plasma insulin (FPI), fasting plasma glucose (FPG), HbA1c, and lipid profile were measured by standard methods. Insulin resistance and sensitivity were assessed by triglyceride glucose (TyG) index, homeostatic model assessment (HOMA-IR), quantitative insulin sensitivity check index (QUICKI), and β-cell function by HOMA-B. RESULTS 25(OH)D deficiency was reported as 40% in control and 70% in T2DM patients. 25(OH)D concentration was positively associated with age, blood pressure, T2DM duration, FPG, HbA1c, TyG index, and HOMA-IR and negatively associated with HOMA-B and QUICKI among all the participants (p ≤.001). Participants with severe 25(OH)D deficiency (<10 ng/ml) were 39 times higher odds of being T2DM, while, those with moderate deficiency (10-19ng/ml) and insufficiency (20-29 ng/ml) were 16 times and 13 times higher odds of being T2DM, respectively. CONCLUSION Sufficient 25(OH)D concentration may lower the risk of development of IR and T2DM in middle-aged control and diabetic participants.
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Antwi J, Huffman F, Sullivan S. Relationship of serum Vitamin D concentrations with Adipokines and Cardiometabolic risk among non-Hispanic black type 2 diabetic and non-diabetic subjects: a cross-sectional study. BMC Nutr 2018; 4:50. [PMID: 32153911 PMCID: PMC7050721 DOI: 10.1186/s40795-018-0259-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 12/05/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To report the association of serum 25-hydroxyvitamin D [25(OH)D] and its association with adipokines and cardiometabolic risk factors in Haitian Americans (HA) and African Americans (AA) by ethnicity and type 2 diabetes (T2D) status. METHODS A cross-sectional study in 197 HA (92 with T2D and 102 without T2D) and 200 AA (97 with T2D and 103 without T2D) recruited in South Florida. Serum 25(OH)D concentrations and adipokines were analyzed by ELISA and cardiometabolic risk factors were indexed by obesity, glycemic control, insulin sensitivity, lipid profile, and blood pressure. RESULTS Controlling for age, BMI, energy intake, smoking status and HOMA2-IR in multivariate linear regression analyses, serum 25(OH)D concentrations were significantly associated with WC (R2 = 0.760, B = - 0.092, P = 0.027), HbA1C (R2 = 0.142, B = - 0.012, P = 0.010), and TG (R2 = 0.159, B = - 1.192, P = 0.003) in only HA without T2D. While serum 25(OH)D concentrations were significantly associated with TC (R2 = 0.168, B = - 0.329, P = 0.040), log leptin (R2 = 0.544, B = - 0.007, P = 0.021), and adiponectin (R2 = 0.144, B = 0.111, P = 0.033), but slightly associated with LDL-c (R2 = 0.133, B = - 0.278, P = 0.064) in only AA without T2D. Among individuals with T2D, serum 25(OH)D concentrations were marginally associated with IL-6 (R2 = 0.109, B = 0.076, P = 0.085) in HA with T2D, and there was a trend toward significance with log leptin (R2 = 0.393, B = - 0.006, P = 0.075) in AA with T2D in regression analysis. CONCLUSIONS The findings that the associations of serum 25(OH)D concentrations with adipokines and cardiometabolic factors differ between HA and AA has clinical and public implications to guide design of T2D preventive strategies that are culturally specific even within the same ethnicity.
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Affiliation(s)
- Janet Antwi
- 0000 0001 2160 918Xgrid.264272.7Dietetics and Nutrition, Human Ecology Department, State University of New York at Oneonta, New York, USA
| | - Fatma Huffman
- 0000 0001 2110 1845grid.65456.34Department of Dietetics and Nutrition, Robert Stempel College of Public Health, Florida International University, Miami, USA
| | - Stacey Sullivan
- 0000 0001 2160 918Xgrid.264272.7Dietetics and Nutrition, Human Ecology Department, State University of New York at Oneonta, New York, USA
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26
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Wang CM, Chang CS, Chang YF, Wu SJ, Chiu CJ, Hou MT, Chen CY, Liu PY, Wu CH. Inverse Relationship between Metabolic Syndrome and 25-Hydroxyvitamin D Concentration in Elderly People without Vitamin D deficiency. Sci Rep 2018; 8:17052. [PMID: 30451913 PMCID: PMC6242887 DOI: 10.1038/s41598-018-35229-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 11/01/2018] [Indexed: 02/07/2023] Open
Abstract
Vitamin D status is inversely associated with the prevalence of metabolic syndrome (MetS). Whether this is true in the elderly without vitamin D deficiency is rarely investigated. Our data source is a cross-sectional survey of 1,966 community-dwelling elderly Taiwanese in 2012. An overnight fasting blood were obtained for biochemistry variables. Vitamin D deficiency was defined as serum 25-hydroxyvitamin D3 [25(OH)D] concentration <20 ng/mL. MetS is defined using modified ATP-III criteria. Of 523 participants without vitamin D deficiency (Men/Women = 269/254, age = 76.0 ± 6.2 years old [65–102 years old]), mean 25(OH)D was 44.0 ± 11.1 ng/mL, and the MetS prevalence of MS was 46.5%. Serum 25(OH)D was negatively associated with osteocalcin, the homeostatic model assessment insulin resistance (HOMA-IR) index, body mass index (BMI), and glycated hemoglobin A1c. Participants with more MetS features have lower serum 25(OH)D and osteocalcin. Binary logistic regression models showed that 25(OH)D, physical activity, and osteocalcin were negatively independent MetS factors, but that the HOMA-IR index, BMI, and being female were positively independent factors. The risk of MetS was progressively lower along with the increased 25(OH)D concentration, even above 60 ng/mL. In conclusion, a low 25(OH)D concentration is an independent risk factor for MetS in elderly people without vitamin D deficiency.
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Affiliation(s)
- Chun-Min Wang
- Department of Neurology, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chin-Sung Chang
- Department of Family Medicine, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yin-Fan Chang
- Department of Family Medicine, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shin-Jiuan Wu
- Department of Food Nutrition, Chung Hwa University Medical Technology, Tainan, Taiwan
| | - Ching-Ju Chiu
- Institute of Gerontology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Meng-Tzu Hou
- Department of Physical Therapy and Assistive Technology, National Yang-Ming University, Taipei, Taiwan
| | - Chuan-Yu Chen
- Department of Family Medicine, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ping-Yen Liu
- Department of Internal Medicine, Division of Cardiology, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Hsing Wu
- Department of Family Medicine, National Cheng Kung University Hospital and College of Medicine, National Cheng Kung University, Tainan, Taiwan. .,Department of Food Nutrition, Chung Hwa University Medical Technology, Tainan, Taiwan.
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Mirhosseini N, Rainsbury J, Kimball SM. Vitamin D Supplementation, Serum 25(OH)D Concentrations and Cardiovascular Disease Risk Factors: A Systematic Review and Meta-Analysis. Front Cardiovasc Med 2018; 5:87. [PMID: 30050908 PMCID: PMC6052909 DOI: 10.3389/fcvm.2018.00087] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/18/2018] [Indexed: 12/15/2022] Open
Abstract
Background: Cardiovascular disease (CVD) risk factors are associated with low serum 25 hydroxyvitamin D (25(OH)D) concentrations in observational studies; however, clinical trial findings are inconsistent. Objective: We assessed the effect of vitamin D supplementation and increased serum 25(OH)D concentrations on CVD risk factors in a systemic review and meta-analysis of randomized controlled trials (RCTs). Design: MEDLINE, CINAHL, EMBASE, and Google Scholar were searched for RCTs that evaluated vitamin D supplementation and cardiovascular outcomes [blood pressure, parathyroid hormone (PTH), serum high-sensitivity C-reactive protein (hs-CRP), total cholesterol, high and low density lipoprotein (HDL and LDL, respectively), triglycerides, peak wave velocity (PWV) and Augmentation Index (AI)] from 1992 through 2017. Meta-analysis was based on a random-effects model and inverse variance method to calculate standardized mean difference (SMD) as effect sizes, followed by a leave-one-out method for sensitivity analysis. Risk of publication bias was assessed using Cochrane checklist and Begg funnel plots. The systematic review is registered as CRD42015025346. Results: We identified 2341 studies from which 81 met inclusion criteria. The meta-analysis indicated a significant reduction in systolic blood pressure (SMD = −0.102 ± 0.04 mmHg, 95% confidence interval (CI), −0.20 to −0.03), diastolic blood pressure (SMD = −0.07 ± 0.03 mmHg, 95% CI, −0.14 to −0.006), serum PTH (SMD = −0.66 ± 0.08 ng/L, 95% CI, −0.82 to −0.49), hs-CRP (SMD = −0.20 ± 0.07 mg/L, 95% CI, −0.34 to −0.06), total cholesterol (SMD = −0.15 ± 0.06 mmol/L, 95% CI, −0.25 to −0.04), LDL (SMD = −0.10 ± 0.05 mmol/L, 95% CI, −0.20 to −0.003), triglycerides (SMD = −0.12 ± 0.06 mmol/L, 95% CI, −0.23 to −0.003) and a significant increase in HDL (SMD = 0.09 ± 0.04 mmol/L, 95% CI, 0.00 to 0.17) with vitamin D supplementation. These findings remained significant in sensitivity analyses for blood pressure, lipid profile, serum PTH, and serum hs-CRP. There was no significant effect of vitamin D supplementation on PWV (SMD = −0.20 ± 0.13 m/s, 95% CI, −0.46 to 0.06, p = 0.14) and AI (SMD = −0.09 ± 0.14%, 95% CI, −0.37 to 0.19, p = 0.52) for vitamin D supplemented groups. Conclusion: These findings suggest that vitamin D supplementation may act to protect against CVD through improving risk factors, including high blood pressure, elevated PTH, dyslipidemia, and inflammation.
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Affiliation(s)
| | | | - Samantha M Kimball
- Pure North S'Energy Foundation, Calgary, AB, Canada.,St. Mary's University, Calgary, AB, Canada
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28
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Abudawood M, Tabassum H, Ansar S, Almosa K, Sobki S, Ali MN, Aljohi A. Assessment of gender-related differences in vitamin D levels and cardiovascular risk factors in Saudi patients with type 2 diabetes mellitus. Saudi J Biol Sci 2018; 25:31-36. [PMID: 29379353 PMCID: PMC5775082 DOI: 10.1016/j.sjbs.2017.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 03/14/2017] [Accepted: 04/02/2017] [Indexed: 12/13/2022] Open
Abstract
Diabetes is a major risk factor for cardiovascular disease (CVD) including stroke, coronary heart disease, and peripheral artery disease. It remains a leading cause of mortality throughout the world, affecting both women and men. This investigation was aimed to study gender based differences in cardiovascular risk factors of adult population with type-2 diabetes mellitus (T2DM) and to check the correlation between serum HbA1C, lipid profile and serum vitamin D levels, in T2DM patients of Riyadh, Saudi Arabia. This hospital-based cross-sectional study involving subjects was divided into two gender based groups; normal male (800), diabetic male (800) and normal female (800) and T2DM females (800). Blood samples were analyzed for fasting glucose (FBG), HbA1c, total cholesterol (TC), triglycerides (Tg), low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C) and serum levels of 25(OH)-vitamin D in all groups. All the glycemic control parameters and lipid profile parameters were found to be significantly different in diabetic vs non-diabetic group (p < 0.001) in both genders. The results also show that vitamin D concentration decreased significantly (p < 0.001) in diabetic patients than the healthy individuals in both the genders. Vitamin-D and HbA1C were negatively correlated in both males and females in T2DM patients and significant at P < 0.05. Our study reveals that dyslipidemia remains one of the major risk factors of CVD in T2DM. In addition to dyslipidemia, decreased levels of vitamin-D associated with increased HbA1C alarms the early diagnosis of Type 2 Diabetes.
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Affiliation(s)
- Manal Abudawood
- Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Hajera Tabassum
- Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Sabah Ansar
- Department of Clinical Laboratory Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Khalid Almosa
- Center for Health Studies, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Samia Sobki
- Central Military Laboratory & Blood Bank, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Mir Naiman Ali
- Department of Microbiology, Mumtaz Degree & P.G. College, Hyderabad, India
| | - Ali Aljohi
- Central Military Laboratory & Blood Bank, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
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Hoseini R, Damirchi A, Babaei P. Vitamin D increases PPARγ expression and promotes beneficial effects of physical activity in metabolic syndrome. Nutrition 2017; 36:54-59. [DOI: 10.1016/j.nut.2016.06.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/09/2016] [Accepted: 06/13/2016] [Indexed: 02/03/2023]
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30
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Fan HR, Lin LQ, Ma H, Li Y, Sun CH. Association between vitamin D receptor gene polymorphism (TaqI) and obesity in Chinese population. J Genet 2016; 94:473-8. [PMID: 26440086 DOI: 10.1007/s12041-015-0541-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hui-Ru Fan
- National Key Discipline of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, Heilongjiang 150000, People's Republic of China.
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Li S, He Y, Lin S, Hao L, Ye Y, Lv L, Sun Z, Fan H, Shi Z, Li J, Feng R, Na L, Wang Y, Li Y, Sun C. Increase of circulating cholesterol in vitamin D deficiency is linked to reduced vitamin D receptor activity via the Insig-2/SREBP-2 pathway. Mol Nutr Food Res 2016; 60:798-809. [PMID: 26694996 DOI: 10.1002/mnfr.201500425] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 12/04/2015] [Accepted: 12/10/2015] [Indexed: 04/01/2025]
Abstract
SCOPE Individuals deficient in vitamin D are more likely to have higher circulating cholesterol levels and cardiovascular diseases. However, the underlying mechanisms are still unclear. METHODS AND RESULTS A cross-sectional survey, animal study, and in vitro experiments were conducted to investigate the effect and mechanisms of vitamin D deficiency on endogenous cholesterol metabolism. We demonstrated that vitamin D deficiency was positively associated with an increase of total serum cholesterol and low-density lipoprotein cholesterol levels in northern Chinese individuals. The vitamin D deficiency-induced increase of cholesterol concentration was mainly due to enhanced cholesterol biosynthesis rather than reduced catabolism. Under vitamin D deficiency, the transcriptional activity of vitamin D receptor (VDR) was decreased, leading to the downregulation of insulin-induced gene-2 (Insig-2) expression and thus its inhibitory role on sterol regulatory element-binding protein 2 activation; 3-hydroxy-3-methylglutaryl-coenzyme A reductase expression was accordingly increased. Vitamin D3 was protective against vitamin D deficiency-induced cholesterol increase by maintaining the transcriptional activity of VDR and Insig-2 expression. CONCLUSION Vitamin D deficiency is associated with the increase of circulating cholesterol in the people of northern China by enhancing hepatic cholesterol biosynthesis, which was linked to the reduction of transcriptional activity of VDR.
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Affiliation(s)
- Songtao Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Yujie He
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Song Lin
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Liuyi Hao
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Yaxin Ye
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Lin Lv
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Zongxiang Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Huiru Fan
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Zhiping Shi
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Jie Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Rennan Feng
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Lixin Na
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
| | - Yanwen Wang
- Institute for Nutrisciences and Health, National Research Council Canada, Charlottetown, PE, Canada
| | - Ying Li
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
- Research Institute of Food, Nutrition and Health, Sino-Russian Medical Research Center, Harbin Medical University, Harbin, China
| | - Changhao Sun
- Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China
- Research Institute of Food, Nutrition and Health, Sino-Russian Medical Research Center, Harbin Medical University, Harbin, China
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Kim TH, Lee HH, Kim JM, Choi SD, Lee A, Hwang SY, Kim M, Kim YS, Yeom S. Expression of Vitamin D Receptor in Seminal Vesicles of Cholesterol Formula Mice. J Menopausal Med 2015; 21:89-92. [PMID: 26357646 PMCID: PMC4561746 DOI: 10.6118/jmm.2015.21.2.89] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 03/31/2015] [Accepted: 04/09/2015] [Indexed: 11/24/2022] Open
Abstract
Objectives Genomic function of vitamin D receptor (VDR) indicates spermatogenesis that is important for in male reproductive organ authors evaluated the VDR expression in seminal vesicles with high cholesterol (HC) formula diet rat, because there is no report about relationship or difference in VDR in seminal vesicles between HC and control. Methods Male C57BL/6 mice aged 5 weeks were raised for 13 weeks. After one week of adaptation-period, they were fed different diet on normal AIN-93G diet, or HC diet containing 2% cholesterol for 12 weeks. The antibodies used were rabbit anti-VDR primary polyclonal. Results There was no significant difference in VDR reactivity in seminal vesicles, body weight of rat and weight of seminal vesicles between HC group and normal control group. Conclusion Our data give the no difference in expression of VDR of seminal vesicles rat between HC formula diet and normal AIN-93G diet. But we confirmed the VDR expression in seminal vesicles.
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Affiliation(s)
- Tae-Hee Kim
- Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Hae-Hyeog Lee
- Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Jun-Mo Kim
- Department of Urology, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Seung Do Choi
- Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Arum Lee
- Department of Interdisciplinary Program in Biomedical Science, Soonchunhyang University, Asan, Korea
| | - Sun Yong Hwang
- Department of Interdisciplinary Program in Biomedical Science, Soonchunhyang University, Asan, Korea
| | - Mijin Kim
- Department of Interdisciplinary Program in Biomedical Science, Soonchunhyang University, Asan, Korea
| | - Yeon-Suk Kim
- Department of Interdisciplinary Program in Biomedical Science, Soonchunhyang University, Asan, Korea
| | - SeungRae Yeom
- Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Bucheon, Korea
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Babaei P, Damirchi A, Hoseini R. The interaction effects of aerobic exercise training and vitamin D supplementation on plasma lipid profiles and insulin resistance in ovariectomized rats. J Exerc Nutrition Biochem 2015; 19:173-82. [PMID: 26526941 PMCID: PMC4624118 DOI: 10.5717/jenb.2015.15070703] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 06/27/2015] [Accepted: 07/07/2015] [Indexed: 02/06/2023] Open
Abstract
Purpose The purpose of this study was to determine the interaction effects of aerobic exercise training and vitamin D supplementation on indices of obesity and plasma lipid profiles in ovariectomized (OVX) rats. Methods Forty female Wistar rats were divided into 5 groups: aerobic training (3 days/week for 8 weeks; AT; n = 8), aerobic training and vitamin D supplementation (OVX + AT + Vit D; n = 8), vitamin D supplementation (OVX + Vit D; n = 8), ovariectomized control (OVX + C, n = 8) and SHAM (n = 8). After blood sampling, visceral fat was taken from the abdominal cavity and weighed immediately. Data was statistically analyzed by One-way ANOVA and Repeated measure ANOVA tests with a 0.05 significance level. Results Body weight, visceral fat, BMI and food intake decreased significantly in OVX + AT + Vit D (P < 0.001); whereas these variables increased significantly in OVX + C (P < 0.001) and SHAM (P < 0.023) groups. At the end of two-months of follow-up, we observed significant differences in TC, TG, HDL-C, LDL-C, glucose, insulin, and HOMA-IR in all groups. Conclusion It seems that aerobic training with vitamin D, due to the involvement of muscle mass and exposure to dynamic pressure on the bones and muscles, increased energy expenditure, stimulated insulin exudation and glucose homeostasis, decreased insulin resistance and improved the lipid profile in ovariectomized rats.
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Affiliation(s)
- Parvin Babaei
- Department of Physiology, Guilan University of Medical Sciences, Rasht, Iran
| | - Arsalan Damirchi
- Department of Sport Physiology, Faculty of physical education and sport sciences, University of Guilan, Rasht, Iran
| | - Rastegar Hoseini
- Department of Sport Physiology, Faculty of physical education and sport sciences, University of Guilan, Rasht, Iran
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Vitamin D for the prevention of cardiovascular disease: Are we ready for that? Atherosclerosis 2015; 241:729-40. [PMID: 26135478 DOI: 10.1016/j.atherosclerosis.2015.06.034] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 06/16/2015] [Accepted: 06/16/2015] [Indexed: 11/23/2022]
Abstract
A general concept of clinical benefit of vitamin D supplementation has emerged from the evidence in prevention of osteoporosis. From the cardiovascular point of view, clinical benefit of such supplementation remains less clear. Studies in vitro and in animal models demonstrated the expression of vitamin D receptors in endothelial cells, vascular smooth muscle and cardiomyocytes. Vitamin D has been directly implicated in endothelium-mediated vasodilation, anti-coagulant activity and inhibition of the inflammatory response. Indirectly, it may favor the reduction of blood pressure, myocardial hypertrophy and ventricular arrhythmias. In contrast to these mechanistic findings, cross-sectional, longitudinal and small clinical trials have not been consistent in demonstrating association between cardiovascular events and vitamin D. Besides, methodological issues in the tests for serum levels of vitamin D may also contribute to this puzzle. Hence, in the current state of knowledge, it may be too early to consider or to rule out vitamin D as a tool to either estimate or mitigate residual cardiovascular risk. In this review, we discuss recent advances and potential limitations in mechanistic and clinical evidences that are outlining the framework of interaction between vitamin D and cardiovascular risk.
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Kardassis D, Gafencu A, Zannis VI, Davalos A. Regulation of HDL genes: transcriptional, posttranscriptional, and posttranslational. Handb Exp Pharmacol 2015; 224:113-179. [PMID: 25522987 DOI: 10.1007/978-3-319-09665-0_3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
HDL regulation is exerted at multiple levels including regulation at the level of transcription initiation by transcription factors and signal transduction cascades; regulation at the posttranscriptional level by microRNAs and other noncoding RNAs which bind to the coding or noncoding regions of HDL genes regulating mRNA stability and translation; as well as regulation at the posttranslational level by protein modifications, intracellular trafficking, and degradation. The above mechanisms have drastic effects on several HDL-mediated processes including HDL biogenesis, remodeling, cholesterol efflux and uptake, as well as atheroprotective functions on the cells of the arterial wall. The emphasis is on mechanisms that operate in physiologically relevant tissues such as the liver (which accounts for 80% of the total HDL-C levels in the plasma), the macrophages, the adrenals, and the endothelium. Transcription factors that have a significant impact on HDL regulation such as hormone nuclear receptors and hepatocyte nuclear factors are extensively discussed both in terms of gene promoter recognition and regulation but also in terms of their impact on plasma HDL levels as was revealed by knockout studies. Understanding the different modes of regulation of this complex lipoprotein may provide useful insights for the development of novel HDL-raising therapies that could be used to fight against atherosclerosis which is the underlying cause of coronary heart disease.
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Affiliation(s)
- Dimitris Kardassis
- Department of Biochemistry, University of Crete Medical School and Institute of Molecular Biology and Biotechnology, Foundation of Research and Technology of Hellas, Heraklion, Crete, 71110, Greece,
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Mackawy AMH, Badawi MEH. Association of vitamin D and vitamin D receptor gene polymorphisms with chronic inflammation, insulin resistance and metabolic syndrome components in type 2 diabetic Egyptian patients. Meta Gene 2014; 2:540-56. [PMID: 25606437 PMCID: PMC4287888 DOI: 10.1016/j.mgene.2014.07.002] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Revised: 06/27/2014] [Accepted: 07/02/2014] [Indexed: 02/06/2023] Open
Abstract
Background To date the published data concerning the possible interplay between vitamin D (VitD) and Vit D receptor (VDR) gene polymorphism with the immune/inflammatory mediators in type 2 diabetes mellitus (DM) is insufficient. Some of the immune non-classical actions of vitamin D may point to its role in the pathogenesis of type 2 DM through down-regulation of cytokines (IL-6). Although there is evidence to support a relationship among vitamin D status, chronic inflammation and insulin resistance, the underlying mechanism requires further exploration. We aimed to investigate the role of vitamin D in chronic inflammation and insulin resistance in type 2 DM. Moreover, to examine the association of VDR gene polymorphisms [VDR 2228570 C > T (FokI); VDR 1544410 A > G (BsmI)] with the components of metabolic syndrome (MetSyn) in type 2 diabetic Egyptian patients . Subjects and methods A total of 190 subjects were enrolled in this study, 60 controls and 130 type 2 diabetic patients (Group II). Group II was subdivided into 63 patients without MetSyn (subgroup IIa) and 67 patients with MetSyn (subgroup IIb). Genetic analysis for VDR gene polymorphisms was done in all subjects. VitD and IL-6 plasma levels were estimated. Results The TT genotype for the VDR FokI was significantly more frequent in subgroup IIb than in subgroup IIa and controls (X2 = 6.83, P = 0.03 and X2 = 16.592, P = 0.000) respectively. The T allele was more frequent in the MetSyn group as compared to diabetics without MetSyn (p = 0.001), odds ratio (OR) and 95% CI for the T allele of C > T (FokI) = 2.30 (1.37–3.86). We did not detect any significant difference in VDR BsmI genotypes between patients and control groups (P = 0.947). FokI VDR was significantly associated with the lipid profile parameters, VitD and IL-6 plasma levels in subgroup IIa and associated with HOMA-IR, insulin, VitD, IL-6 levels, waist circumference (WC) and body mass index (BMI) in subgroup IIb while BsmI VDR variant was associated only with VitD values in both subgroups. Conclusion The present study suggests an interaction between VDR polymorphisms and important components of MetSyn, VitD and pro-inflammatory cytokines (IL-6). FokI VDR polymorphisms may be linked to mild inflammation and insulin resistance and might represent a genetic determinant for developing MetSyn in type 2 diabetic Egyptian patients. The challenge is determining the mechanisms of VitD action for recommendation of VitD supplementation that reduces the risks of MetSyn, insulin resistance and progression to type 2 diabetes.
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Key Words
- BMI, body mass index
- CI, confidence intervals
- CRP, C-reactive protein
- DBP, diastolic blood pressure
- DM, diabetes mellitus
- FBG, fasting blood glucose
- FPI, fasting plasma insulin
- HDL-C, high density lipoprotein cholesterol
- HOMA, Homeostasis of Metabolic Assessment
- HPLC, High performance liquid chromatography
- HbA1c, glycated hemoglobin
- IL-6, interleukin -6
- IRS, insulin receptor substrates
- Insulin resistance
- Interleukin-6 (IL-6)
- LDL-C, low density lipoprotein cholesterol
- MetSyn, metabolic syndrome
- Metabolic syndrome
- NHANES III, National Health and Examination Survey
- OR, odds ratio
- PGs, pro-inflammatory prostaglandins
- PTH, parathyroid hormone
- Polymorphisms
- Pro-inflammatory cytokines
- SBP, systolic blood pressure
- SD, standard deviation
- SOCS, suppressors of cytokine signaling
- TC, total cholesterol
- TG, triglyceride
- Type 2 diabetes mellitus (DM)
- VDR, Vit D receptor
- VitD, Vitamin D
- Vitamin D
- Vitamin D Receptor gene
- WC, waist circumference
- X2, Chi-square
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Affiliation(s)
- Amal M H Mackawy
- Medical Biochemistry and Molecular Biology, Internal Medicine and Endocrinology Department, Faculty of Medicine, Zagazig University, Egypt
| | - Mohammed E H Badawi
- Medical Biochemistry and Molecular Biology, Internal Medicine and Endocrinology Department, Faculty of Medicine, Zagazig University, Egypt
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Challoumas D. Vitamin D supplementation and lipid profile: what does the best available evidence show? Atherosclerosis 2014; 235:130-9. [PMID: 24835432 DOI: 10.1016/j.atherosclerosis.2014.04.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 04/10/2014] [Accepted: 04/13/2014] [Indexed: 01/14/2023]
Abstract
Vitamin D supplements have increasingly been used for the treatment and prevention of osteoporosis. Historically, effects of the vitamin on the cardiovascular (CV) system have been proposed and demonstrated in the literature, including benefits on serum lipids. Although observational studies support an association between increased serum vitamin D levels and a favorable lipid profile, interventional studies have shown no effects. This review presents and analyzes all the related randomized controlled trials (RCTs) identified in the literature from 1987 to present. A systematic literature search was conducted via MEDLINE, Cochrane Library and EMBASE and, out of 19 relevant RCTs identified, only one reported benefits of vitamin D supplementation on lipid profile parameters, while the rest showed no effects or even adverse outcomes, which are highlighted by the only meta-analysis in the field. Attempts to explain the paradox of beneficial findings of observational studies versus discouraging results of interventional studies have been made and the most popular suggests that high serum vitamin D concentrations may not be the cause of good health but its outcome instead, as healthy people are more likely to stay outdoors longer and have better eating habits. For definitive answers to be given, large, well-designed RCTs need to be conducted that will take into account and adjust for dietary consumption as well as serum calcium and parathyroid hormone levels, both of which have been shown to be associated with the CV system. Until then, recommendations for vitamin D supplementation should not change.
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Affiliation(s)
- Dimitrios Challoumas
- School of Medicine, Cardiff University, Heath Park Campus, Cardiff CF14 4XW, UK.
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Chow ECY, Magomedova L, Quach HP, Patel R, Durk MR, Fan J, Maeng HJ, Irondi K, Anakk S, Moore DD, Cummins CL, Pang KS. Vitamin D receptor activation down-regulates the small heterodimer partner and increases CYP7A1 to lower cholesterol. Gastroenterology 2014; 146:1048-59. [PMID: 24365583 DOI: 10.1053/j.gastro.2013.12.027] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 12/15/2013] [Accepted: 12/17/2013] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Little is known about the effects of the vitamin D receptor (VDR) on hepatic activity of human cholesterol 7α-hydroxylase (CYP7A1) and cholesterol metabolism. We studied these processes in mice in vivo and mouse and human hepatocytes. METHODS Farnesoid X receptor (Fxr)(-/-), small heterodimer partner (Shp)(-/-), and C57BL/6 (wild-type control) mice were fed normal or Western diets for 3 weeks and were then given intraperitoneal injections of vehicle (corn oil) or 1α,25-dihydroxyvitamin D3 (1,25[OH]2D3; 4 doses, 2.5 μg/kg, every other day). Plasma and tissue samples were collected and levels of Vdr, Shp, Cyp7a1, Cyp24a1, and rodent fibroblast growth factor (Fgf) 15 expression, as well as levels of cholesterol, were measured. We studied the regulation of Shp by Vdr using reporter and mobility shift assays in transfected human embryonic kidney 293 cells, quantitative polymerase chain reaction with mouse tissues and mouse and human hepatocytes, and chromatin immunoprecipitation assays with mouse liver. RESULTS We first confirmed the presence of Vdr mRNA and protein expression in livers of mice. In mice fed normal diets and given injections of 1,25(OH)2D3, liver and plasma concentrations of 1,25(OH)2D3 increased and decreased in unison. Changes in hepatic Cyp7a1 messenger RNA (mRNA) correlated with those of Cyp24a1 (a Vdr target gene) and inversely with Shp mRNA, but not ileal Fgf15 mRNA. Similarly, incubation with 1,25(OH)2D3 increased levels of Cyp24a1/CYP24A1 and Cyp7a1/CYP7A1 mRNA in mouse and human hepatocytes, and reduced levels of Shp mRNA in mouse hepatocytes. In Fxr(-/-) and wild-type mice with hypercholesterolemia, injection of 1,25(OH)2D3 consistently reduced levels of plasma and liver cholesterol and Shp mRNA, and increased hepatic Cyp7a1 mRNA and protein; these changes were not observed in Shp(-/-) mice given 1,25(OH)2D3 and fed Western diets. Truncation of the human small heterodimer partner (SHP) promoter and deletion analyses revealed VDR-dependent inhibition of SHP, and mobility shift assays showed direct binding of VDR to enhancer regions of SHP. In addition, chromatin immunoprecipitation analysis of livers from mice showed that injection of 1,25(OH)2D3 increased recruitment of Vdr and rodent retinoid X receptor to the Shp promoter. CONCLUSIONS Activation of the VDR represses hepatic SHP to increase levels of mouse and human CYP7A1 and reduce cholesterol.
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Affiliation(s)
- Edwin C Y Chow
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Lilia Magomedova
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Holly P Quach
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Rucha Patel
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Matthew R Durk
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Jianghong Fan
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Han-Joo Maeng
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Kamdi Irondi
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | | | - David D Moore
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Carolyn L Cummins
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - K Sandy Pang
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada.
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Williams DM, Fraser A, Sayers A, Fraser WD, Hyppönen E, Smith GD, Sattar N, Lawlor DA. Associations of childhood 25-hydroxyvitamin D2 and D3 and cardiovascular risk factors in adolescence: prospective findings from the Avon Longitudinal Study of Parents and Children. Eur J Prev Cardiol 2014; 21:281-90. [PMID: 23185083 PMCID: PMC3931583 DOI: 10.1177/2047487312465688] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Studies of the associations of circulating total 25-hydroxyvitamin D (25(OH)D) with cardiovascular disease risk factors in adults have reported inconsistent findings. We aimed to compare prospective associations of two analogues of childhood 25(OH)D (25(OH)D2 and 25(OH)D3) with cardiovascular risk factors measured in adolescence. METHODS AND RESULTS We examined associations of childhood (ages 7-12 years) 25(OH)D2 and 25-25(OH)D3 with a range of cardiovascular risk factors (blood pressure, fasting lipids, glucose, insulin and C-reactive protein (CRP)) determined in adolescence (mean age 15.4 years). Data were from 2470 participants of the Avon Longitudinal Study of Parents and Children (ALSPAC), a prospective population-based cohort. After adjustments for age, gender, socioeconomic position and BMI, there were no associations of 25(OH)D2 with cardiovascular risk factors. There was a positive association of season-adjusted (and unadjusted) 25(OH)D3 with high-density lipoprotein cholesterol (HDL-C) (mean change per doubling of 25(OH)D3: 0.03 mmol/l; 95% confidence interval (CI): 0.001 to 0.05, p = 0.02) and an inverse association with fasting insulin (relative difference of -4.59% per doubling; 95% CI: -8.37 to -0.59, p = 0.03). Participants with total 25(OH)D concentration <50 nmol/l had 0.04 mmol/l lower HDL-C (95% CI: -0.07 to -0.01) and 5.54% higher fasting insulin (95% CI: 0.82 to 10.47) compared with participants with total 25(OH)D ≥72 nmol/l. CONCLUSIONS In the first prospective study of children/adolescents, we have shown that higher 25(OH)D3 concentrations in childhood are associated with higher levels of HDL-C and lower fasting insulin in adolescence.
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Affiliation(s)
- Dylan M Williams
- MRC Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, UK
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Association between serum level of vitamin D and lipid profiles in type 2 diabetic patients in Iran. J Diabetes Metab Disord 2014; 13:7. [PMID: 24398023 PMCID: PMC3937161 DOI: 10.1186/2251-6581-13-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Accepted: 11/26/2013] [Indexed: 01/08/2023]
Abstract
Background It is suggested that vitamin D deficiency is associated with cardiovascular disease (CVD) via its effect on lipid profiles. The objective of this study was to determine the association between fasting serum levels of 25(OH) D and lipid profiles in patients with type 2 diabetes. Methods This cross-sectional study was conducted on 108 type 2 diabetics. Patients were selected randomly among members of the Iranian Diabetes Association according to study criteria. Fasting concentration of 25(OH) D, calcium, phosphorus, parathyroid hormone (PTH) and lipid profiles (including triglyceride (TG), high-density lipoprotein (HDL), low-density lipoprotein (LDL), and total cholesterol) were measured. Results The mean serum levels of 25-hydroxyvitamin D (25(OH) D) and PTH were 53.41 ± 33.25 nmol/l and 40.24 ± 18.24 pmol/l, respectively, in type 2 diabetic patients. Prevalence of vitamin D deficiency was 58.34% and vitamin D sufficiency and insufficiency combined was 41.66%. Although in diabetic patients with vitamin D deficiency, serum levels of total cholesterol, TG, and LDL were higher and HDL was lower compared to patients with vitamin D sufficiency, this association was statistically significant only for serum level of TG (145.91 ± 79.00 vs. 122.95 ± 55.82 mg/dl). Conclusions The results of present study show that serum concentrations of 25(OH) D were inversely associated with TG. More interventional studies are needed to confirm the relationship between serum concentration of vitamin D and lipid profile in patients with type 2 diabetes.
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Sadiya A, Ahmed SM, Skaria S, Abusnana S. Vitamin D status and its relationship with metabolic markers in persons with obesity and type 2 diabetes in the UAE: a cross-sectional study. J Diabetes Res 2014; 2014:869307. [PMID: 25371907 PMCID: PMC4211253 DOI: 10.1155/2014/869307] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/18/2014] [Accepted: 09/18/2014] [Indexed: 01/06/2023] Open
Abstract
AIM To report vitamin D status and its impact on metabolic parameters in people in the United Arab Emirates with obesity and type 2 diabetes (T2D). METHODOLOGY This cross-sectional study included 309 individuals with obesity and T2D who were randomly selected based on study criteria. Serum concentrations of 25-hydroxy vitamin D (s-25(OH)D), calcium, phosphorus, parathyroid hormone, alkaline phosphatase, glycemic profile, and cardiometabolic parameters were assessed in fasting blood samples, and anthropometric measurements were recorded. RESULTS Vitamin D deficiency (s-25(OH)D < 50 nmol/L) was observed in 83.2% of the participants, with a mean s-25(OH)D of 33.8 ± 20.3 nmol/L. Serum 25(OH)D correlated negatively (P < 0.01) with body mass index, fat mass, waist circumference, parathyroid hormone, alkaline phosphatase, triglycerides, LDL-cholesterol, and apolipoprotein B and positively (P < 0.01) with age and calcium concentration. Waist circumference was the main predictor of s-25(OH)D status. There was no significant association between serum 25(OH)D and glycemic profile. CONCLUSION There is an overwhelming prevalence of vitamin D deficiency in our sample of the Emirati population with obesity and T2D. Association of s-25(OH)D with body mass index, waist circumference, fat mass, markers of calcium homeostasis and cardiometabolic parameters suggests a role of vitamin D in the development of cardiometabolic disease-related process.
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Affiliation(s)
- Amena Sadiya
- Rashid Center for Diabetes and Research, Ministry of Health, Ajman, UAE
- *Amena Sadiya:
| | - Solafa M. Ahmed
- Rashid Center for Diabetes and Research, Ministry of Health, Ajman, UAE
| | - Sijomol Skaria
- Rashid Center for Diabetes and Research, Ministry of Health, Ajman, UAE
| | - Salah Abusnana
- Rashid Center for Diabetes and Research, Ministry of Health, Ajman, UAE
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Schuch NJ, Garcia VC, Vívolo SRGF, Martini LA. Relationship between Vitamin D Receptor gene polymorphisms and the components of metabolic syndrome. Nutr J 2013; 12:96. [PMID: 23855914 PMCID: PMC3726454 DOI: 10.1186/1475-2891-12-96] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Accepted: 06/17/2013] [Indexed: 01/08/2023] Open
Abstract
Background The Vitamin D Receptor gene (VDR) is expressed in many tissues and modulates the expression of several other genes. The purpose of this study was to investigate the association between metabolic syndrome (MetSyn) with the presence of VDR 2228570 C > T and VDR 1544410 A > G polymorphisms in Brazilian adults. Methods Two hundred forty three (243) individuals were included in a cross-sectional study. MetSyn was classified using the criteria proposed by National Cholesterol Educational Program - Adult Treatment Panel III. Insulin resistance and β cell secretion were estimated by the mathematical models of HOMA IR and β, respectively. The VDR 2228570 C > T and VDR 1544410 A > G polymorphisms were detected by enzymatic digestion and confirmed by allele specific PCR or amplification of refractory mutation. Results Individuals with MetSyn and heterozygosis for VDR 2228570 C > T have higher concentrations of iPTH and HOMA β than those without this polymorphism, and subjects with recessive homozygosis for the same polymorphisms presented higher insulin resistance than those with the heterozygous genotype. There is no association among VDR 1544410 A > G and components of MetSyn, HOMA IR and β, serum vitamin D (25(OH)D3) and intact parathormone (iPTH) levels in patients with MetSyn. A significant lower concentration of 25(OH)D3 was observed only in individuals without MetSyn in the VDR 1544410 A > G genotype. Additionally, individuals without MetSyn and heterozygosis for VDR 2228570 C > T presented higher concentration of triglycerides and lower HDL than those without this polymorphism. Conclusions Using two common VDR polymorphism data suggests they may influence insulin secretion, insulin resistance an serum HDL-cholesterol in our highly heterogeneous population. Whether VDR polymorphism may influence the severity of MetSyn component disorder, warrants examination in larger cohorts used for genome-wide association studies.
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Affiliation(s)
- Natielen Jacques Schuch
- Nutrition Department, School of Public Health, University of São Paulo, Av. Dr. Arnaldo 715, São Paulo, SP CEP 01246-904, Brazil
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Lương KVQ, Nguyễn LTH. Theoretical basis of a beneficial role for vitamin D in viral hepatitis. World J Gastroenterol 2012; 18:5338-50. [PMID: 23082050 PMCID: PMC3471102 DOI: 10.3748/wjg.v18.i38.5338] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Revised: 03/22/2012] [Accepted: 05/06/2012] [Indexed: 02/06/2023] Open
Abstract
Abnormal bone metabolism and dysfunction of the calcium-parathyroid hormone-vitamin D axis have been reported in patients with viral hepatitis. Some studies suggested a relationship between vitamin D and viral hepatitis. Genetic studies have provided an opportunity to identify the proteins that link vitamin D to the pathology of viral hepatitis (i.e., the major histocompatibility complex class II molecules, the vitamin D receptor, cytochrome P450, the renin-angiotensin system, apolipoprotein E, liver X receptor, toll-like receptor, and the proteins regulated by the Sp1 promoter gene). Vitamin D also exerts its effects on viral hepatitis via non-genomic factors, i.e., matrix metalloproteinase, endothelial vascular growth factor, prostaglandins, cyclooxygenase-2, and oxidative stress. In conclusion, vitamin D could have a beneficial role in viral hepatitis. Calcitriol is best used for viral hepatitis because it is the active form of the vitamin D3 metabolite.
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vinh quôc Luong K, Thi Hoàng Nguyên L. Vitamin D and Parkinson's disease. J Neurosci Res 2012; 90:2227-36. [DOI: 10.1002/jnr.23115] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 06/21/2012] [Indexed: 01/11/2023]
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The beneficial role of vitamin D in systemic lupus erythematosus (SLE). Clin Rheumatol 2012; 31:1423-35. [DOI: 10.1007/s10067-012-2033-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 07/04/2012] [Indexed: 02/06/2023]
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Haas MJ, Mooradian AD. What evidence is there for the role of vitamin D and apoA-1 in atheroprotection? ACTA ACUST UNITED AC 2012. [DOI: 10.2217/clp.12.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Weber K, Erben RG. Differences in triglyceride and cholesterol metabolism and resistance to obesity in male and female vitamin D receptor knockout mice. J Anim Physiol Anim Nutr (Berl) 2012; 97:675-83. [PMID: 22548652 DOI: 10.1111/j.1439-0396.2012.01308.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A lean phenotype has been detected in vitamin D receptor (VDR) knockout mice; however, the gender differences in fat metabolism between male and female mice both with age and in response to a high-fat diet have not been studied before. The objective of our study was to assess changes in body and fat tissue weight, food intake and serum cholesterol and triglyceride in VDR knockout mice from weaning to adulthood and after a challenge of adult animals with a high-fat diet. Although VDR knockout mice of both sexes consumed more food than wild-type and heterozygous littermates, their body weight and the weight of fat depots was lower after 6 months on a diet with 5% crude fat content. When adult animals were challenged with a high-fat diet containing 21% crude fat content for 8 weeks, VDR knockout mice of both sexes had a significantly higher food intake but gained less weight than their wild-type littermates. Cholesterol levels were higher after 2 days on the high-fat diet in both sexes, but in the VDR knockout mice, less cholesterol was detected in the serum after 8 weeks. Wild-type male mice showed signs of fatty liver disease at the end of the experiment, which was not detected in the other groups. In conclusion, lack of the VDR receptor results in reduced fat accumulation with age and when adult mice are fed a high-fat diet, despite a higher food intake of VDR knockout mice relative to their wild-type littermates. These effects can be detected in both sexes. Wild-type male mice react with the highest weight gain and cholesterol levels of all groups and develop fatty liver disease after 8 weeks on a high-fat diet, while male VDR knockout mice appear to be protected.
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Affiliation(s)
- K Weber
- Clinic of Small Animal Medicine, LMU University of Munich, Veterinaerstrasse, Muenchen, Germany.
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Wang H, Xia N, Yang Y, Peng DQ. Influence of vitamin D supplementation on plasma lipid profiles: a meta-analysis of randomized controlled trials. Lipids Health Dis 2012; 11:42. [PMID: 22433171 PMCID: PMC3325888 DOI: 10.1186/1476-511x-11-42] [Citation(s) in RCA: 166] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Accepted: 03/20/2012] [Indexed: 12/17/2022] Open
Abstract
Observational studies have shown that low serum levels of vitamin D have been associated with an atherogenic lipid profile. However, the intervention studies gave divergent results. We conducted a meta-analysis of randomized controlled trials that evaluated the effects of vitamin D supplementation on blood lipids. A systematic literature search was conducted via MEDLINE, Cochrane library, and EMBASE for randomized controlled clinical trials assessing the effects of vitamin D supplementation on lipids. The mean change in total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) and triglycerides (TG) from baseline was treated as a continuous variable. In all, 12 clinical trials consisting of 1346 participants were included in the analysis. The pooled estimate of effect for vitamin D supplementation on LDL-C was 3.23 mg/dl (95% confidence interval, 0.55 to 5.90 mg/dl). No statistically significant effects for vitamin D supplementation were observed for TC, HDL-C and TG (differences in means were 1.52 mg/dl (-1.42 to 4.46 mg/dl), -0.14 mg/dl (-0.99 to 0.71 mg/dl) and -1.92 mg/dl (-7.72 to 3.88 mg/dl) respectively). The lipid modulating effects of vitamin D supplementation should be further investigated though large-scale, randomized trials with adequate doses which can effectively elevated the active form of vitamin D in plasma and with proper population which has hyperlipemia as an inclusion criterion.
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Affiliation(s)
- Hao Wang
- Department of Cardiology, the Second Xiangya Hospital, Central South University, Changsha, Hunan, People's Republic of China
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Jaimungal S, Wehmeier K, Mooradian AD, Haas MJ. The emerging evidence for vitamin D-mediated regulation of apolipoprotein A-I synthesis. Nutr Res 2012; 31:805-12. [PMID: 22118750 DOI: 10.1016/j.nutres.2011.09.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 09/09/2011] [Accepted: 09/14/2011] [Indexed: 11/29/2022]
Abstract
Ischemic heart disease and cerebrovascular ischemia are leading causes of mortality in industrialized countries. The pathogenesis of these diseases involves the formation of atherosclerotic plaques with eventual rupture and superimposed thrombosis. This process is inhibited by high-density lipoprotein (HDL), the main protein component of which is apolipoprotein A-I (apo A-I). Vitamin D3 is a hormone produced by sun-exposed skin but is acquired also in the diet. The Framingham Offspring Study and the Third National Health and Nutritional Examination Survey showed a link between vitamin D3 intake and cardiovascular risk factors. The link between 25-hydroxyvitamin D3 and HDL cholesterol (HDLc) and apo A-I is not as clear. Studies in vitamin D receptor knockout mice demonstrated higher HDLc and hepatic apo A-I messenger RNA expression relative to wild type. Experiments in cultured hepatocytes supported these observations. Human studies evaluating the relationship between vitamin D3 and apo A-I and HDLc have yielded conflicting results, but most suggest a positive link between increasing vitamin D3 levels and plasma apo A-I and HDLc. The purpose of this review is to examine the evidence linking vitamin D status and cardiovascular disease, to determine if there is a relationship between vitamin D levels and development of an atherogenic lipid profile. Our objectives are to determine if plasma vitamin D levels correlate with plasma HDLc and apo A-I and, if so, offer speculation as to how apo A-I in the context of high vitamin D levels provides enhanced atheroprotection.
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Affiliation(s)
- Sarada Jaimungal
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Florida–Jacksonville College of Medicine, Jacksonville, FL 32209, USA
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Lu'o'ng KVQ, Nguyên LTH. The beneficial role of vitamin D in Alzheimer's disease. Am J Alzheimers Dis Other Demen 2011; 26:511-20. [PMID: 22202127 PMCID: PMC10845314 DOI: 10.1177/1533317511429321] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2024]
Abstract
Alzheimer's disease (AD) is the most common form of dementia in the elderly individuals and is associated with progressive neurodegeneration of the human neocortex. Patients with AD have a high prevalence of vitamin D deficiency, which is also associated with low mood and impaired cognitive performance in older people. Genetic studies have provided the opportunity to determine which proteins link vitamin D to AD pathology (ie, the major histocompatibility complex class II molecules, vitamin D receptor, renin-angiotensin system, apolipoprotein E, liver X receptor, Sp1 promoter gene, and the poly(ADP-ribose) polymerase-1 gene). Vitamin D also exerts its effect on AD through nongenomic factors, that is, L-type voltage-sensitive calcium channels, nerve growth factor, the prostaglandins, cyclooxygenase 2, reactive oxygen species, and nitric oxide synthase. In conclusion, vitamin D clearly has a beneficial role in AD and improves cognitive function in some patients with AD. Calcitriol, 1 α,25-dihydroxyvitamin D3, is best used for AD because of its active form of vitamin D(3) metabolite and its receptor in the central nervous system.
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