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Hagen R, Nguyen MTT, Anderson JC, Birk JW. Navigating Bowel Preparation for Colonoscopy: A Comprehensive Overview. J Clin Gastroenterol 2025; 59:285-297. [PMID: 39761153 DOI: 10.1097/mcg.0000000000002124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2025]
Abstract
Colorectal cancer (CRC) is the third most common cancer in the United States. Early detection through colonoscopy significantly improves survival rates. Detecting colon polyps depends on the quality of bowel preparation. However, inadequate bowel preparation remains a significant issue in clinical practice. Efforts to address this challenge have led to the development of bowel preparation regimens emphasizing efficacy, tolerability, and safety. Bowel preparation options can be categorized by their osmotic and volume properties. Isosmotic solutions based on polyethylene glycol-electrolyte lavage solutions (PEG-ELS) are available in both low-volume PEG-ELS with ascorbic acid (PEG-Asc) (e.g., MoviPrep, PLENVU) and high-volume formulations (e.g., GoLYTELY, CoLyte), as well as sulfate-free high-volume PEG-ELS formulations (SF-PEG-ELS). Hyperosmotic solutions include oral sulfate solution (OSS) (e.g., SUPREP), sodium phosphate tablets (NaP) (e.g., OsmoPrep), oral sulfate tablets (OST) (e.g., SUTAB), flavored PEG with sulfate salts (FPSS) (e.g., SUFLAVE), and magnesium citrate. Hypoosmotic solutions consist of PEG-sports drink (PEG-SD). In addition, combination solutions are available, such as sodium picosulfate with magnesium citrate (SPMC) with laxatives (e.g., CLENPIQ), and OSS with SF-PEG-ELS (Suclear). Each regimen differs in terms of cost, volume, taste, contraindications, and potential adverse effects. Therefore, clinicians must carefully evaluate each patient to determine the most suitable regimen for their patients.
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Affiliation(s)
| | - Minh Thu T Nguyen
- Department of Medicine
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Connecticut Health Center, Farmington, CT
| | - Joseph C Anderson
- Division of Gastroenterology and Hepatology, Department of Medicine, Dartmouth Hitchcock Medical Center, Lebanon, NH
| | - John W Birk
- Department of Medicine
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Connecticut Health Center, Farmington, CT
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2
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Tamai N, Sumiyama K. Optimal bowel preparation for colonoscopy. Dig Endosc 2025; 37:139-146. [PMID: 39229776 DOI: 10.1111/den.14914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 08/07/2024] [Indexed: 09/05/2024]
Abstract
There is robust evidence to indicate a strong correlation between the bowel preparation status and adenoma detection rate (ADR), which directly impacts the incidence and mortality rate of postcolonoscopy colorectal cancer. Therefore, improving bowel preparation has been of increasing interest. In Japan, commercially available bowel preparation agents include polyethylene glycol, oral sodium sulfate, sodium picosulfate-magnesium citrate, magnesium citrate, and oral sodium phosphate; each has its own strengths and limitations. The timing of administration can also influence the efficacy of bowel preparation and patient tolerability. Furthermore, meta-analyses have suggested predictive factors for inadequate bowel preparation. A detailed understanding of these factors could contribute to reducing the need for repeat colonoscopy within 1 year, as recommended for patients with inadequate bowel preparation. Recent advancements, such as oral sulfate tablets, present promising alternatives with higher patient satisfaction and ADRs than traditional methods. Achieving optimal bowel preparation requires enhanced instructions, individualized regimens, and a comprehensive understanding of patient backgrounds and the characteristics of various bowel preparation agents. This article provides a concise overview of the current status and advancements in bowel preparation for enhancing the quality and safety of colonoscopy.
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Affiliation(s)
- Naoto Tamai
- Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan
| | - Kazuki Sumiyama
- Department of Endoscopy, The Jikei University School of Medicine, Tokyo, Japan
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3
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Jeon SR, Park SK, Yang DH, Cha JM. Comparison of a novel mini-oral sulfate tablet and the conventional oral sulfate tablet in bowel preparation for colonoscopy: a prospective, randomized, investigator-blinded, multicenter, non-inferior, phase 3 trial. J Gastroenterol 2023; 58:1114-1123. [PMID: 37542674 DOI: 10.1007/s00535-023-02023-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 07/08/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND AND AIMS The use of conventional oral sulfate tablets (OSTs) has gained popularity; nonetheless, they may be not only inconvenient to swallow but also difficult to dissolve. A novel mini-OST has recently been developed to enhance compliance with conventional OST use. This study aimed to compare the efficacy, tolerability, and safety between mini-OST and conventional OST. METHODS This was a prospective, randomized, investigator-blinded, multicenter, and non-inferior phase 3 trial conducted between September 2022 and December 2022. The efficacy, safety, and tolerability were compared between mini-OST and conventional OST. RESULTS Exactly 83 patients were evaluated based on a full analysis set (FAS), whereas 82 patients were evaluated as a per-protocol set (PPS). With respect to the efficacy of preparation, successful and high-quality preparation was excellent in the mini-OST and conventional OST groups on both FAS and PPS analyses, without significant differences between the two groups. On the FAS analysis, the satisfaction and tolerability scores were high in both groups, without significant differences. The first bowel movement after taking the investigational product occurred 30 min earlier in the mini-OST group than in the OST group. Mild, moderate, and severe adverse events (AEs) were comparable between the two groups; however, any AEs were more common in the mini-OST group than in the conventional OST group overall. CONCLUSIONS Compared with conventional OST, the novel mini-OST preparation showed similar efficacy, tolerability, and safety, including mild eight solicited AEs and moderate-to-severe AEs. Clinical trial registration NCT05670470.
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Affiliation(s)
- Seong Ran Jeon
- Institute of Digestive Research, Digestive Disease Center, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Soo-Kyung Park
- Department of Gastroenterology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong-Hoon Yang
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jae Myung Cha
- Division of Gastroenterology, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Korea.
- Division of Gastroenterology, Department of Internal Medicine, Kyung Hee University Hospital at Gang Dong, Kyung Hee University School of Medicine, 892 Dongnam-Ro, Gangdong-Gu, Seoul, 05278, Korea.
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4
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Yao-dong L, Yi-ping W, Gang M, Yang-yun H, Ling-ling Z, Hong D, Jia-zheng D, Rong-chao X, You-wei L, Ming Z, Shun-bin D, Jing L, Yang S, Jia-qi D, Lei D, Xiong-feng S, You-jian Z, Zuo-qiong Z. Comparison of oral sodium phosphate tablets and polyethylene glycol lavage solution for colonoscopy preparation: a systematic review and meta-analysis of randomized clinical trials. Front Med (Lausanne) 2023; 10:1088630. [PMID: 37305114 PMCID: PMC10250678 DOI: 10.3389/fmed.2023.1088630] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 05/11/2023] [Indexed: 06/13/2023] Open
Abstract
Objective To systematically compare the bowel cleaning ability, patient tolerance and safety of oral sodium phosphate tablets (NaPTab) and oral polyethylene glycol electrolyte lavage solution (PEGL) to inform clinical decision making. Methods PubMed, Embase, CBM, WanFang Data, CNKI, and VIP databases were searched for studies that used randomized controlled trials (RCTs) to compare the roles of NaPTab and PEGL in bowel preparation before colonoscopy. Two reviewers independently screened the studies, extracted data, and assessed the risk of bias in the included papers. A meta-analysis was performed using RevMan 5.3 software. Results A total of 13 RCTs were eligible for inclusion, including 2,773 patients (1,378 and 1,395 cases in the NaPTab and PEGL groups, respectively). Meta-analysis revealed no significant difference in the cleansing quality of the NaPTab and PEGL groups [RR 1.02, 95% CI (0.96-1.08), P = 0.46]. The incidence of nausea was lower in the NaPTab group than in the PEGL group [RR 0.67, 95% CI (0.58-0.76), p < 0.00001]. Patients rated the taste of NaPTab higher than PEGL [RR 1.33, 95% CI (1.26-1.40), P < 0.00001]. Willingness to repeat the treatment was also higher in the NaPTab group than in the PEGL group [RR 1.52, 95% CI (1.28-1.80), P < 0.00001]. Both serum potassium and serum calcium decreased in both groups after the preparation; however, meta-analysis revealed that both minerals decreased more in the NaPTab group than in the PEGL group [MD = 0.38, 95% CI (0.13-0.62), P = 0.006 for serum potassium and MD = 0.41, 95% CI (0.04-0.77), P = 0.03 for serum calcium]. Meanwhile, serum phosphorus increased in both groups after the preparation; however, levels increased more in the NaPTab group than in the PEGL group [MD 4.51, (95% CI 2.9-6.11), P < 0.00001]. Conclusions While NaP tablets and PEGL were shown to have a similar cleaning effect before colonoscopy, NaP tablets had improved patient tolerance. However, NaP tablets had a strong effect on serum potassium, calcium, and phosphorus levels. For patients with low potassium, low calcium, and renal insufficiency, NaP tablets should be prescribed with caution. For those at high-risk for acute phosphate nephropathy, NaP tablets should be avoided. Given the low number and quality of included studies, these conclusions will require additional verification by large high-quality studies. Systematic review registration 10.37766/inplasy2023.5.0013, identifier: NPLASY202350013.
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Affiliation(s)
- Li Yao-dong
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wang Yi-ping
- West China Hospital, Sichuan University, Chengdu, China
| | - Mai Gang
- Surgical Department of Deyang People's Hospital, Deyang, China
| | - Han Yang-yun
- Surgical Department of Deyang People's Hospital, Deyang, China
| | - Zhu Ling-ling
- West China Hospital, Sichuan University, Chengdu, China
| | - Deng Hong
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Deng Jia-zheng
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Xiang Rong-chao
- Surgical Department of Deyang People's Hospital, Deyang, China
| | - Li You-wei
- Surgical Department of Deyang People's Hospital, Deyang, China
| | - Zhao Ming
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Ding Shun-bin
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Ling Jing
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Shen Yang
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Dong Jia-qi
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Deng Lei
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Song Xiong-feng
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Zhang You-jian
- Gastroenterology Department of Deyang People's Hospital, Deyang, China
| | - Zhou Zuo-qiong
- School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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5
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Bornstein Y, Wick EC. Bacterial Decontamination: Bowel Preparation and Chlorhexidine Bathing. Clin Colon Rectal Surg 2023; 36:201-205. [PMID: 37113279 PMCID: PMC10125299 DOI: 10.1055/s-0043-1761154] [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: 01/27/2023]
Abstract
Infectious complications following bowel surgery continues to be a leading cause of postoperative morbidity. Both patient- and procedure-related factors contribute to risk. Compliance with evidence-based process measures is the best strategy for prevention of surgical site infections. Three process measures that aim to reduce the bacterial load present at the time of surgery are mechanical bowel preparation, oral antibiotics, and chlorhexidine bathing. There is heightened awareness of surgical site infections, in part due to improved access to reliable postoperative complication data for colon surgery as well as incorporation of surgical site infection into public reporting and pay-for-performance payment models. As a result, the literature has improved with regard to the effectiveness of these methods in reducing infectious complications. Herein, we provide the evidence to support adoption of these practices into colorectal surgery infection prevention programs.
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Affiliation(s)
- Yadin Bornstein
- Department of Surgery, University of California, San Francisco, San Francisco, California
| | - Elizabeth C. Wick
- Department of Surgery, University of California, San Francisco, San Francisco, California
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Shahini E, Sinagra E, Vitello A, Ranaldo R, Contaldo A, Facciorusso A, Maida M. Factors affecting the quality of bowel preparation for colonoscopy in hard-to-prepare patients: Evidence from the literature. World J Gastroenterol 2023; 29:1685-1707. [PMID: 37077514 PMCID: PMC10107216 DOI: 10.3748/wjg.v29.i11.1685] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/02/2023] [Accepted: 03/07/2023] [Indexed: 03/17/2023] Open
Abstract
Adequate bowel cleansing is critical for a high-quality colonoscopy because it affects diagnostic accuracy and adenoma detection. Nevertheless, almost a quarter of procedures are still carried out with suboptimal preparation, resulting in longer procedure times, higher risk of complications, and higher likelihood of missing lesions. Current guidelines recommend high-volume or low-volume polyethylene glycol (PEG)/non-PEG-based split-dose regimens. In patients who have had insufficient bowel cleansing, the colonoscopy should be repeated the same day or the next day with additional bowel cleansing as a salvage option. A strategy that includes a prolonged low-fiber diet, a split preparation regimen, and a colonoscopy within 5 h of the end of preparation may increase cleansing success rates in the elderly. Furthermore, even though no specific product is specifically recommended in the other cases for difficult-to-prepare patients, clinical evidence suggests that 1-L PEG plus ascorbic acid preparation are associated with higher cleansing success in hospitalized and inflammatory bowel disease patients. Patients with severe renal insufficiency (creatinine clearance < 30 mL/min) should be prepared with isotonic high volume PEG solutions. Few data on cirrhotic patients are currently available, and no trials have been conducted in this population. An accurate characterization of procedural and patient variables may lead to a more personalized approach to bowel preparation, especially in patients undergoing resection of left colon lesions, where intestinal preparation has a poor outcome. The purpose of this review was to summarize the evidence on the risk factors influencing the quality of bowel cleansing in difficult-to-prepare patients, as well as strategies to improve colonoscopy preparation in these patients.
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Affiliation(s)
- Endrit Shahini
- Gastroenterology Unit, National Institute of Gastroenterology-IRCCS “Saverio de Bellis”, Castellana Grotte, Bari 70013, Italy
| | - Emanuele Sinagra
- Gastroenterology and Endoscopy Unit, Fondazione Istituto G. Giglio, Cefalù 90015, Italy
| | - Alessandro Vitello
- Gastroenterology and Endoscopy Unit, S.Elia-Raimondi Hospital, Caltanissetta 93100, Italy
| | - Rocco Ranaldo
- Department of Internal Medicine, “Mazzolani-Vandini” Hospital, Digestive Endoscopy, Ferrara 744011, Italy
| | - Antonella Contaldo
- Gastroenterology Unit, National Institute of Gastroenterology “S de Bellis” Research Hospital, Bari 70013, Italy
| | - Antonio Facciorusso
- Department of Medical Sciences, University of Foggia, Section of Gastroenterology, Foggia 71122, Italy
| | - Marcello Maida
- Gastroenterology and Endoscopy Unit, S.Elia-Raimondi Hospital, Caltanissetta 93100, Italy
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Lee SE, Oh DJ, Nam JH, Cho H, Kim JH, Lee JK, Lim YJ, Koh MS, Kim SH. Taking Oral Sulfate Tablets with Simethicone for Bowel Preparation Leads to Higher Adenoma Detection Rate than Polyethylene Glycol: A Propensity Score Analysis. Dig Dis Sci 2023; 68:867-876. [PMID: 35781655 DOI: 10.1007/s10620-022-07611-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/27/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND Efficient bowel preparation is essential for preventing colorectal cancer by improving endoscopic adenoma detection. Tablet for bowel preparation containing sulfate salts, OSTs (oral sulfate tablets), has been developed and it is gaining more popularity. However, its efficacy compared to standard preparation agent, PEG-AA (polyethylene glycol), has not been well discovered. We assessed the efficacy of PEG and OSTs using a real-time clinical data warehouse (CDW) model. METHODS We performed a propensity score-matched (PSM) analysis of consecutive adult patients undergoing colonoscopy who received PEG-AA or OSTs prior to colonoscopy at a tertiary academic hospital. The endoscopic records of 992 adult patients were retrospectively analyzed. The clinical data warehouse collected data including bowel preparation, insertion time, observation time, and the detection of polyps and adenomas. Multivariate regression analysis was performed to reveal the factors associated with endoscopic outcomes. RESULTS Among 992 patients included in the study, 770 and 222 patients received PEG-AA and OSTs, respectively. Among the propensity score-matched population (n = 1897), OSTs resulted in better bowel cleansing quality (8.16 vs 7.84, p = 0.014) and a higher adenoma detection rate (38.6% vs 27.1%, p = 0.003). Using PEG-AA, older age, inadequate bowel preparation (BBPS score < 6) and endoscopy by fellows were found to be factors associated with poor adenoma detection. In the elderly over 65 years of age, a significant difference in cleansing quality between the two groups (7.21 vs 8.19, p < 0.001) was found, but its impact on ADR was not prominent (49.5% vs 45.4%, p = 0.653). CONCLUSIONS OSTs with simethicone achieved better endoscopic cleanliness, improving adenoma detection rate compared to the conventional PEG-AA protocol. The synergistic effect of both the convenience of taking tablets and the reduction of intraluminal bubble by adjunctive simethicone improves the clinical efficacy of colonoscopy.
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Affiliation(s)
- Seung Eun Lee
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Dong Jun Oh
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Ji Hyung Nam
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Hyeki Cho
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Jae Hak Kim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Jun Kyu Lee
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Yun Jeong Lim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Moon Soo Koh
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea
| | - Sang Hoon Kim
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Dongguk-ro 27 Ilsandong-gu, Goyang, 10326, Republic of Korea.
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8
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Sugiura H, Tsunezumi J, Yanagisawa H, Futaya M, Nitta K, Tsuchiya K. Fibulin7 aggravates calcium oxalate-induced acute kidney injury by binding to calcium oxalate crystals. J Cell Physiol 2023; 238:165-178. [PMID: 36370444 DOI: 10.1002/jcp.30914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 10/20/2022] [Accepted: 10/27/2022] [Indexed: 11/13/2022]
Abstract
Fibulin7 (Fbln7) is a matricellular protein that is structurally similar to short fibulins but does not possess elastogenic abilities. Fbln7 is localized on the cell surface of the renal tubular epithelium in the adult kidney. We previously reported that Fbln7 binds artificial calcium phosphate particles in vitro, and that heparin counteracts this binding by releasing Fbln7 from the cell surface. Fbln7 gene (Fbln7) deletion in vivo decreased interstitial fibrosis and improved renal function in a high phosphate diet-induced chronic kidney disease mouse model. However, the contribution of Fbln7 during acute injury response remains largely unknown. We hypothesized that Fbln7 serves as an exacerbating factor in acute kidney injury (AKI). We employed three AKI models in vivo and in vitro, including unilateral ureteral obstruction (UUO), cisplatin-induced AKI, and calcium oxalate (CaOx)-induced AKI. Here, we report that Fbln7KO mice were protected from kidney damage in a CaOx-induced AKI model. Using HEK293T cells, we found that Fbln7 overexpression enhanced the CaOx-induced upregulation of EGR1 and LAMB3, and that heparin treatment canceled this effect. Interestingly, the protective function observed in Fbln7KO kidneys was limited to the CaOx-induced AKI model, while Fbln7KO mice were not protected against UUO-induced renal fibrosis or cisplatin-induced renal tubular damage. Taken together, our study indicates that Fbln7 mediates the local deposition of CaOx and damages the renal tubular epithelium. Releasing Fbln7 from the cell surface via heparin/heparin derivatives or Fbln7 inhibitory antibodies may provide a general strategy to mitigate calcium crystal-induced kidney injuries.
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Affiliation(s)
- Hidekazu Sugiura
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan.,Department of Nephrology, Division of Medicine, Saiseikai Kazo Hospital, Kazo, Saitama, Japan.,Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Jun Tsunezumi
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Pharmaceutical Sciences, Kyushu University of Health and Welfare, Miyazaki, Japan
| | - Hiromi Yanagisawa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba, Ibaraki, Japan.,Department of Biomedical Science, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Mayuko Futaya
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
| | - Kosaku Nitta
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
| | - Ken Tsuchiya
- Department of Medicine, Kidney Center, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan.,Department of Blood Purification, Kidney Center, Tokyo Women's Medical University, Shinjuku, Tokyo, Japan
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9
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Juncos LA, Wieruszewski PM, Kashani K. Pathophysiology of Acute Kidney Injury in Critical Illness: A Narrative Review. Compr Physiol 2022; 12:3767-3780. [PMID: 36073750 DOI: 10.1002/cphy.c210028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acute kidney injury (AKI) is a syndrome that entails a rapid decline in kidney function with or without injury. The consequences of AKI among acutely ill patients are dire and lead to higher mortality, morbidity, and healthcare cost. To prevent AKI and its short and long-term repercussions, understanding its pathophysiology is essential. Depending on the baseline kidney histology and function reserves, the number of kidney insults, and the intensity of each insult, the clinical presentation of AKI may differ. While many factors are capable of inducing renal injury, they can be categorized into a few processes. The three primary processes reported in the literature are hemodynamic changes, inflammatory reactions, and nephrotoxicity. The majority of patients with AKI will suffer from more than one during their development and/or progression of AKI. Moreover, the development of one usually leads to the instigation of another. Thus, the interactions and progression between these mechanisms may determine the severity and duration of the AKI. Other factors such as organ crosstalk and how our concurrent therapies interact with these mechanisms complicate the pathophysiology of the progression of the AKI even further. In this narrative review article, we describe these three main pathophysiological processes that lead to the development and progression of AKI. © 2022 American Physiological Society. Compr Physiol 12: 1-14, 2022.
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Affiliation(s)
- Luis A Juncos
- Division of Nephrology, Central Arkansas Veterans' Healthcare System, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Patrick M Wieruszewski
- Division of Hospital Pharmacy, Department of Pharmacy, Mayo Clinic, Rochester, Minnesota, USA
| | - Kianoush Kashani
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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10
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Auriemma F, Sferrazza S, Bianchetti M, Savarese MF, Lamonaca L, Paduano D, Piazza N, Giuffrida E, Mete LS, Tucci A, Milluzzo SM, Iannelli C, Repici A, Mangiavillano B. From advanced diagnosis to advanced resection in early neoplastic colorectal lesions: Never-ending and trending topics in the 2020s. World J Gastrointest Surg 2022; 14:632-655. [PMID: 36158280 PMCID: PMC9353749 DOI: 10.4240/wjgs.v14.i7.632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/02/2021] [Accepted: 06/20/2022] [Indexed: 02/06/2023] Open
Abstract
Colonoscopy represents the most widespread and effective tool for the prevention and treatment of early stage preneoplastic and neoplastic lesions in the panorama of cancer screening. In the world there are different approaches to the topic of colorectal cancer prevention and screening: different starting ages (45-50 years); different initial screening tools such as fecal occult blood with immunohistochemical or immune-enzymatic tests; recto-sigmoidoscopy; and colonoscopy. The key aspects of this scenario are composed of a proper bowel preparation that ensures a valid diagnostic examination, experienced endoscopist in detection of preneoplastic and early neoplastic lesions and open-minded to upcoming artificial intelligence-aided examination, knowledge in the field of resection of these lesions (from cold-snaring, through endoscopic mucosal resection and endoscopic submucosal dissection, up to advanced tools), and management of complications.
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Affiliation(s)
- Francesco Auriemma
- Gastrointestinal Endoscopy Unit, Humanitas Mater Domini, Castellanza 21053, Italy
| | - Sandro Sferrazza
- Gastroenterology and Endoscopy Unit, Santa Chiara Hospital, Trento 38014, Italy
| | - Mario Bianchetti
- Digestive Endoscopy Unit, San Giuseppe Hospital - Multimedica, Milan 20123, Italy
| | - Maria Flavia Savarese
- Department of Gastroenterology and Gastrointestinal Endoscopy, General Hospital, Sanremo 18038, Italy
| | - Laura Lamonaca
- Gastrointestinal Endoscopy Unit, Humanitas Mater Domini, Castellanza 21053, Italy
| | - Danilo Paduano
- Gastrointestinal Endoscopy Unit, Humanitas Mater Domini, Castellanza 21053, Italy
| | - Nicole Piazza
- Gastroenterology Unit, IRCCS Policlinico San Donato, San Donato Milanese; Department of Biomedical Sciences for Health, University of Milan, Milan 20122, Italy
| | - Enrica Giuffrida
- Gastroenterology and Hepatology Unit, A.O.U. Policlinico “G. Giaccone", Palermo 90127, Italy
| | - Lupe Sanchez Mete
- Department of Gastroenterology and Digestive Endoscopy, IRCCS Regina Elena National Cancer Institute, Rome 00144, Italy
| | - Alessandra Tucci
- Department of Gastroenterology, Molinette Hospital, Città della salute e della Scienza di Torino, Turin 10126, Italy
| | | | - Chiara Iannelli
- Department of Health Sciences, Magna Graecia University, Catanzaro 88100, Italy
| | - Alessandro Repici
- Digestive Endoscopy Unit and Gastroenterology, Humanitas Clinical and Research Center and Humanitas University, Rozzano 20089, Italy
| | - Benedetto Mangiavillano
- Biomedical Science, Hunimed, Pieve Emanuele 20090, Italy
- Gastrointestinal Endoscopy Unit, Humanitas Mater Domini, Castellanza, Varese 21053, Italy
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11
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De Nicola L, Cozzolino M, Genovesi S, Gesualdo L, Grandaliano G, Pontremoli R. Can SGLT2 inhibitors answer unmet therapeutic needs in chronic kidney disease? J Nephrol 2022; 35:1605-1618. [PMID: 35583597 PMCID: PMC9300572 DOI: 10.1007/s40620-022-01336-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/18/2022] [Indexed: 11/25/2022]
Abstract
Chronic kidney disease (CKD) is a global health problem, affecting more than 850 million people worldwide. The number of patients receiving renal replacement therapy (dialysis or renal transplantation) has increased over the years, and it has been estimated that the number of people receiving renal replacement therapy will more than double from 2.618 million in 2010 to 5.439 million in 2030, with wide differences among countries. The main focus of CKD treatment has now become preserving renal function rather than replacing it. This is possible, at least to some extent, through the optimal use of multifactorial therapy aimed at preventing end-stage kidney disease and cardiovascular events. Sodium/glucose cotransporter 2 inhibitors (SGLT2i) reduce glomerular hypertension and albuminuria with beneficial effects on progression of renal damage in both diabetic and non-diabetic CKD. SGLT2 inhibitors also show great benefits in cardiovascular protection, irrespective of diabetes. Therefore, the use of these drugs will likely be extended to the whole CKD population as a new standard of care.
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Affiliation(s)
- Luca De Nicola
- Nephrology and Dialysis Unit, Department of Advanced Medical and Surgical Sciences, University Vanvitelli, Naples, Italy
| | - Mario Cozzolino
- Renal Division, ASST Santi Paolo e Carlo, Department of Health Sciences, University of Milan, Milan, Italy.
| | - Simonetta Genovesi
- School of Medicine and Surgery, Nephrology Clinic, University of Milano-Bicocca, Milan, Italy.,Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Loreto Gesualdo
- Department of Emergency and Organ Transplantation (DETO), School of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Giuseppe Grandaliano
- Dipartimento di Medicina e Chirurgia Traslazionale, Università Cattolica del Sacro Cuore, Rome, Italy.,Dipartimento di Scienze Mediche e Chirurgiche, U.O.C. Nefrologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Roberto Pontremoli
- Department of Internal Medicine, University of Genoa and IRCCS Ospedale Policlinico San Martino, Genoa, Italy
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12
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Leventoğlu E, Büyükkaragöz B, Gönül İI, Fidan K, Öğüt B, Söylemezoğlu O, Bakkaloğlu SA, Buyan N. An unusual cause of elevated serum creatinine after kidney transplantation in an adolescent: Answers. Pediatr Nephrol 2022; 37:1021-1025. [PMID: 34999982 DOI: 10.1007/s00467-021-05379-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/09/2021] [Accepted: 11/09/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Emre Leventoğlu
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey.
| | - Bahar Büyükkaragöz
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | | | - Kibriya Fidan
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Betül Öğüt
- Department of Pathology, Gazi University, Ankara, Turkey
| | - Oğuz Söylemezoğlu
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Sevcan A Bakkaloğlu
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
| | - Necla Buyan
- Department of Pediatric Nephrology, Faculty of Medicine, Gazi University, Ankara, Turkey
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13
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van Riswijk MLM, van Keulen KE, Siersema PD. Efficacy of ultra-low volume (≤1 L) bowel preparation fluids: Systematic review and meta-analysis. Dig Endosc 2022; 34:13-32. [PMID: 33991373 PMCID: PMC9290948 DOI: 10.1111/den.14015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/04/2021] [Accepted: 05/11/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND AND AIMS High-quality bowel preparation is paramount for the diagnostic accuracy and safety of colonoscopy; however, it is often difficult for patients to adhere to high-volume laxatives, which may contribute to poor bowel preparation. This review aims to assess the efficacy of bowel preparation fluids of 1 L or less (≤1 L). METHODS We performed a systematic review including all relevant randomized controlled trials on ultra-low volume (≤1 L) bowel preparation fluids for colonoscopy published since 2015. Primary endpoint was the percentage of adequately prepared patients. Secondary endpoints included adenoma detection rate (ADR) and safety. RESULTS Bowel preparation with sodium picosulfate/magnesium citrate (SPMC; 19 trials, n = 10,287), 1L-polyethylene glycol with ascorbate (PEGA; 10 trials, n = 1717), sodium phosphate (NaP; 2 trials, n = 621), and oral sulfate solution (OSS; 3 trials, n = 597) was adequate in 75.2%, 82.9%, 81.9%, and 92.1%, respectively, of patients; however, heterogeneity between studies was considerable (I2 range: 86-98%). Pooled ADRs were 31.1% with SPMC, 32.3% with 1L-PEGA, 30.4% with NaP, and 40.9% with OSS. Temporary electrolyte changes were seen with all ultra-low volume bowel preparation fluid solutions but without sustained effects in most patients. CONCLUSION Ultra-low volume bowel preparation fluids do not always meet the 90% quality standard for adequate bowel preparation as defined by current guidelines. Nonetheless, they may be considered in patients intolerant for higher-volume laxatives and without risk factors for inadequate bowel preparation or dehydration-related complications.
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Affiliation(s)
- Milou L. M. van Riswijk
- Department of Gastroenterology and HepatologyRadboud University Medical CenterRadboud Institute for Health SciencesNijmegenThe Netherlands
| | - Kelly E. van Keulen
- Department of Gastroenterology and HepatologyRadboud University Medical CenterRadboud Institute for Health SciencesNijmegenThe Netherlands
| | - Peter D. Siersema
- Department of Gastroenterology and HepatologyRadboud University Medical CenterRadboud Institute for Health SciencesNijmegenThe Netherlands
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14
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Dwaib HS, Ajouz G, AlZaim I, Rafeh R, Mroueh A, Mougharbil N, Ragi ME, Refaat M, Obeid O, El-Yazbi AF. Phosphorus Supplementation Mitigates Perivascular Adipose Inflammation-Induced Cardiovascular Consequences in Early Metabolic Impairment. J Am Heart Assoc 2021; 10:e023227. [PMID: 34873915 PMCID: PMC9075232 DOI: 10.1161/jaha.121.023227] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background The complexity of the interaction between metabolic dysfunction and cardiovascular complications has long been recognized to extend beyond simple perturbations of blood glucose levels. Yet, structured interventions targeting the root pathologies are not forthcoming. Growing evidence implicates the inflammatory changes occurring in perivascular adipose tissue (PVAT) as early instigators of cardiovascular deterioration. Methods and Results We used a nonobese prediabetic rat model with localized PVAT inflammation induced by hypercaloric diet feeding, which dilutes inorganic phosphorus (Pi) to energy ratio by 50%, to investigate whether Pi supplementation ameliorates the early metabolic impairment. A 12‐week Pi supplementation at concentrations equivalent to and twice as much as that in the control diet was performed. The localized PVAT inflammation was reversed in a dose‐dependent manner. The increased expression of UCP1 (uncoupling protein1), HIF‐1α (hypoxia inducible factor‐1α), and IL‐1β (interleukin‐1β), representing the hallmark of PVAT inflammation in this rat model, were reversed, with normalization of PVAT macrophage polarization. Pi supplementation restored the metabolic efficiency consistent with its putative role as an UCP1 inhibitor. Alongside, parasympathetic autonomic and cerebrovascular dysfunction function observed in the prediabetic model was reversed, together with the mitigation of multiple molecular and histological cardiovascular damage markers. Significantly, a Pi‐deficient control diet neither induced PVAT inflammation nor cardiovascular dysfunction, whereas Pi reinstatement in the diet after a 10‐week exposure to a hypercaloric low‐Pi diet ameliorated the dysfunction. Conclusions Our present results propose Pi supplementation as a simple intervention to reverse PVAT inflammation and its early cardiovascular consequences, possibly through the interference with hypercaloric‐induced increase in UCP1 expression/activity.
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Affiliation(s)
- Haneen S Dwaib
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Ghina Ajouz
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Ibrahim AlZaim
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Biochemistry and Molecular Genetics Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Rim Rafeh
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Ali Mroueh
- INSERM UMR 1260 Regenerative Nanomedicine FMTSUniversity of Strasbourg Strasbourg France
| | - Nahed Mougharbil
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Marie-Elizabeth Ragi
- Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Marwan Refaat
- Department of Biochemistry and Molecular Genetics Faculty of Medicine The American University of Beirut Beirut Lebanon.,Division of Cardiology Department of Internal Medicine Faculty of Medicine The American University of Beirut Beirut Lebanon
| | - Omar Obeid
- Department of Nutrition and Food Sciences Faculty of Agriculture and Food Sciences The American University of Beirut Beirut Lebanon
| | - Ahmed F El-Yazbi
- Department of Pharmacology and Toxicology Faculty of Medicine The American University of Beirut Beirut Lebanon.,Department of Pharmacology and Toxicology Faculty of Pharmacy Alexandria University Alexandria Egypt.,Faculty of Pharmacy Al-Alamein International University Alamein Egypt
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15
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Torres PU, Troya MI, Dauverge M, Bover J. Independent effects of parathyroid hormone and phosphate levels on hard outcomes in non-dialysis patients: food for thought. Nephrol Dial Transplant 2021; 37:613-616. [PMID: 34718751 DOI: 10.1093/ndt/gfab308] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Indexed: 12/25/2022] Open
Affiliation(s)
- Pablo Ureña Torres
- AURA Nord Saint Ouen Dialysis Service. Saint Ouen, France and Service d'Explorations Fonctionnelles Rénales, Hôpital Necker, Université Paris V, René Descartes, Paris, France
| | - María Isabel Troya
- Nephrology Department, University Hospital Germans Trias I Pujol, RICORS, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona (Barcelona), Catalonia, Spain
| | - Maxime Dauverge
- AURA Nord Saint Ouen Dialysis Service. Saint Ouen, France and Service d'Explorations Fonctionnelles Rénales, Hôpital Necker, Université Paris V, René Descartes, Paris, France
| | - Jordi Bover
- Nephrology Department, University Hospital Germans Trias I Pujol, RICORS, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona (Barcelona), Catalonia, Spain
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16
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Kim WS, Lee BJ. Safe and appropriate use of laxatives for colonoscopy. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2021. [DOI: 10.5124/jkma.2021.64.8.561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background: Appropriate bowel preparation is essential for effective colonoscopy. Inadequate use of bowel preparation solutions reduces patient compliance, makes the detection of lesions such as adenoma difficult, and increases the risk of complication such as perforation. Current Concepts: A 4-L polyethylene glycol (PEG) solution can be safely used for bowel preparation, even in most individuals with underlying diseases. However, it requires a high preparation-volume intake and has poor patient compliance due to its unpleasant taste. Therefore, a 2- or 1- L sulfate-free, PEG-based laxative was developed to, reduce the amount of PEG and improve the taste. Furthermore, simethicon-containing laxative formulation was developed to eliminate gas bubbles. In addition, oral bowel preparation solutions with enema agents and prokinetics were used to improve bowel preparation, but no improvement was observed. Various alternative laxatives are available; however, PEG-based bowel preparation solutions are still recommended in most cases due to their stability. Discussion and Conclusion: Although a 4-L PEG solutions recommended for bowel preparation in most cases, several laxatives have been introduced to overcome its disadvantages. The laxative agent must be selected according to each patient’s specific characteristics. Moreover, the method of taking bowel preparation solutions and additional bowel preparation medications must be carefully chosen. In addition, patient education via various methods, such as using a smartphone, when taking a bowel preparation agent may help improve bowel preparation quality.
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17
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A Safety and Efficacy Comparison of a New Sulfate-Based Tablet Bowel Preparation Versus a PEG and Ascorbate Comparator in Adult Subjects Undergoing Colonoscopy. Am J Gastroenterol 2021; 116:319-328. [PMID: 33165006 PMCID: PMC7864663 DOI: 10.14309/ajg.0000000000001020] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 09/16/2020] [Indexed: 12/11/2022]
Abstract
INTRODUCTION A new tablet-based bowel prep for colonoscopy has been developed containing poorly absorbed sulfate salts which act to retain water within the intestinal lumen resulting in a copious diarrhea, thereby cleansing the bowel. This study evaluated the safety and efficacy of these oral sulfate tablets (OST) compared with a US FDA-approved bowel prep solution containing PEG3350, electrolytes, and ascorbate (polyethylene glycol and ascorbate [PEG-EA]). METHODS Five hundred fifteen adult patients (mean 57y) were enrolled in this single-blind, multicenter, noninferiority study. Subjects were assigned either PEG-EA or OST to be administered in a split-dose regimen starting the evening before colonoscopy. PEG-EA was taken according to its approved labeling (1 L of prep solution with 16 oz. of additional water) in the evening and again in the morning. OST patients took a total of 24 tablets. OST patients were administered 12 tablets in the evening, and the following morning. Patients consumed 16 ounces of water with each dose of 12 tablets and drank an additional 32 oz. of water with each dose. Colonoscopies were performed by blinded investigators. Cleansing efficacy was evaluated globally and segmentally using a 4-point scale (Excellent-no more than small bits of feces/fluid which can be suctioned easily; achieves clear visualization of the entire colonic mucosa. Good-feces and fluid requiring washing and suctioning, but still achieves clear visualization of the entire colonic mucosa. Fair-enough feces even after washing and suctioning to prevent clear visualization of the entire colonic mucosa. Poor-large amounts of fecal residue and additional bowel preparation required). Scores of Good or Excellent were considered to be a success. Safety was assessed by spontaneously reported adverse events, solicited ratings of expected prep symptoms, and laboratory testing. RESULTS A high rate of cleansing success was seen with OST (92%), which was noninferior to PEG-EA (89%). Only a small proportion of subjects rated their expected gastrointestinal symptoms as severe (<5% for both preps). No clinically significant differences were seen between preps for chemistry and hematology parameters. No serious adverse experiences were reported with OST. DISCUSSION Sulfate tablets achieved a high level of cleansing in the study, comparable with US FDA-approved preps. OST was noninferior to PEG-EA in this study and achieved significantly more Excellent preps overall and in the proximal colon. The OST prep was well-tolerated, with a similar rate of spontaneously reported adverse experiences to PEG-EA and a low rate of severe expected gastrointestinal symptoms.
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18
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Singh A, Singh S, Saini G, Sinha S, Kaur H, Singh S. The role of mechanical bowel preparation in patients undergoing elective ileostomy closure: A randomized prospective study. FORMOSAN JOURNAL OF SURGERY 2021. [DOI: 10.4103/fjs.fjs_121_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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19
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Wen Y, Yang C, Menez SP, Rosenberg AZ, Parikh CR. A Systematic Review of Clinical Characteristics and Histologic Descriptions of Acute Tubular Injury. Kidney Int Rep 2020; 5:1993-2001. [PMID: 33163720 PMCID: PMC7609907 DOI: 10.1016/j.ekir.2020.08.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/13/2020] [Accepted: 08/25/2020] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION The term "acute tubular injury" (ATI) represents histopathologic renal tubular injury and often manifests clinically as acute kidney injury (AKI). Studies systematically summarizing the clinical presentation and histological changes in human ATI are limited. METHODS We used a comprehensive search strategy to search human studies of ATI from 1936 to July 2019. We extracted study characteristics, clinical characteristics, and histologic descriptions of ATI by bright field, immunofluorescence, electron microscopy, and immunohistochemistry. We compared ATI histology as a function of tissue procurement type, timing, and etiologies. RESULTS We included 292 studies comprising a total of 1987 patients. The majority of studies (222 of 292, 76%) were single-center case reports. The mean age of included patients was 47 years. In native kidney biopsy cases, baseline, peak, and latest creatinine were 1.3 mg/dl, 7.19 mg/dl, and 1.85 mg/dl respectively, and biopsy was performed mostly after peak creatinine (86.7%, 391 of 451). We identified 16 histologic descriptions of tubular injury, including tubular cell sloughing (115 of 292, 39.4%), tubular epithelial flattening/simplification (110 of 292, 37.7%), tubular dilatation (109 of 292, 37.3%), and tubular cell necrosis (93 of 292, 31.8%). There was no difference in tubular injury histology among different tissue procurement types (native kidney biopsy, transplant kidney biopsy, and autopsy), among different etiologies, or between different tissue procurement timing (before or after creatinine peaks in native kidneys). Electron microscopy and immunohistochemistry were used in a minority of studies. CONCLUSION ATI manifests with diverse histologic changes. Efforts to establish protocols to harmonize biopsy practices, to handle kidney biopsy for tissue interrogation, and to report results across clinical practice are needed to improve our understanding of this complex disease.
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Affiliation(s)
- Yumeng Wen
- Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chen Yang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Steven P. Menez
- Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Avi Z. Rosenberg
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Chirag R. Parikh
- Division of Nephrology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Correspondence: Chirag R. Parikh, Division of Nephrology, Johns Hopkins University School of Medicine, 1830 E. Monument St., Suite 416, Baltimore, Maryland 21287, USA.
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20
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Urinary phosphate-containing nanoparticle contributes to inflammation and kidney injury in a salt-sensitive hypertension rat model. Commun Biol 2020; 3:575. [PMID: 33060834 PMCID: PMC7562875 DOI: 10.1038/s42003-020-01298-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 09/15/2020] [Indexed: 12/12/2022] Open
Abstract
Although disturbed phosphate metabolism frequently accompanies chronic kidney disease (CKD), its causal role in CKD progression remains unclear. It is also not fully understood how excess salt induces organ damage. We here show that urinary phosphate-containing nanoparticles promote kidney injury in salt-sensitive hypertension. In Dahl salt-sensitive rats, salt loading resulted in a significant increase in urinary phosphate excretion without altering serum phosphate levels. An intestinal phosphate binder sucroferric oxyhydroxide attenuated renal inflammation and proteinuria in this model, along with the suppression of phosphaturia. Using cultured proximal tubule cells, we confirmed direct pathogenic roles of phosphate-containing nanoparticles in renal tubules. Finally, transcriptome analysis revealed a potential role of complement C1q in renal inflammation associated with altered phosphate metabolism. These data demonstrate that increased phosphate excretion promotes renal inflammation in salt-sensitive hypertension and suggest a role of disturbed phosphate metabolism in the pathophysiology of hypertensive kidney disease and high salt-induced kidney injury.
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21
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Sumida K, Dashputre AA, Potukuchi PK, Thomas F, Obi Y, Molnar MZ, Gatwood JD, Streja E, Kalantar-Zadeh K, Kovesdy CP. Laxative Use and Change in Estimated Glomerular Filtration Rate in Patients With Advanced Chronic Kidney Disease. J Ren Nutr 2020; 31:361-369. [PMID: 32952006 DOI: 10.1053/j.jrn.2020.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/30/2020] [Accepted: 08/09/2020] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Constipation is highly prevalent in advanced chronic kidney disease (CKD), due in part to dietary (e.g., fiber) restrictions, and is often managed by laxatives; however, the effect of laxative use on kidney function in advanced CKD remains unclear. We aimed to examine the association of laxative use with longitudinal change in estimated glomerular filtration rate (eGFR) in patients with advanced CKD. DESIGN AND METHODS In a retrospective cohort of 43,622 US veterans transitioning to end-stage renal disease (ESRD) from 2007 to 2015, we estimated changes in eGFR (slope) by linear mixed-effects models using ≥2 available outpatient eGFR measurements during the 2-year period before transition to ESRD. The association of laxative use with change in eGFR was examined by testing the interaction of time-varying laxative use with time for eGFR slope in the mixed-effects models with adjustment for fixed and time-varying confounders. RESULTS Laxatives were prescribed in 49.8% of patients during the last 2-year pre-ESRD period. In the crude model, time-varying laxative use was modestly associated with more progressive eGFR decline compared with non-use of laxatives (median [interquartile interval] -7.1 [-11.9, -4.3] vs. -6.8 [-11.6, -4.0] mL/min/1.73 m2/year, P < .001). After multivariable adjustment, a faster eGFR decline associated with laxative use (vs. non-use of laxatives) remained statistically significant, although the between-group difference in eGFR slope was minimal (median [interquartile interval] -8.8 [-12.9, -5.9] vs. -8.6 [-12.6, -5.6] mL/min/1.73 m2/year, P < .001). The significant association was no longer evident across different types of laxatives (i.e., stool softeners, stimulants, or hyperosmotics). CONCLUSIONS There was a clinically negligible association of laxative use with change in eGFR during the last 2-year pre-ESRD period, suggesting the renal safety profile of laxatives in advanced CKD patients.
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Affiliation(s)
- Keiichi Sumida
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Ankur A Dashputre
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee; Institute for Health Outcomes and Policy, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Praveen K Potukuchi
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee; Institute for Health Outcomes and Policy, College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Fridtjof Thomas
- Division of Biostatistics, Department of Preventive Medicine, College of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Yoshitsugu Obi
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee
| | - Miklos Z Molnar
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee; James D. Eason Transplant Institute, Methodist University Hospital, Memphis, Tennessee; Division of Transplant, Department of Surgery, University of Tennessee Health Science Center, Memphis, Tennessee; Department of Transplantation and Surgery, Semmelweis University, Budapest, Hungary
| | - Justin D Gatwood
- Department of Clinical Pharmacy and Translational Science, College of Pharmacy, University of Tennessee Health Science Center, Nashville, Tennessee
| | - Elani Streja
- Division of Nephrology and Hypertension, Harold Simmons Center for Chronic Disease Research and Epidemiology, University of California Irvine, Orange, California
| | - Kamyar Kalantar-Zadeh
- Division of Nephrology and Hypertension, Harold Simmons Center for Chronic Disease Research and Epidemiology, University of California Irvine, Orange, California
| | - Csaba P Kovesdy
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee; Nephrology Section, Memphis VA Medical Center, Memphis, Tennessee.
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22
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Randomized Controlled Trial of Polyethylene Glycol versus Oral Sodium Phosphate for Bowel Preparation in Unsedated Colonoscopy. Gastroenterol Res Pract 2020; 2020:6457079. [PMID: 32908496 PMCID: PMC7463375 DOI: 10.1155/2020/6457079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/18/2020] [Accepted: 08/03/2020] [Indexed: 12/11/2022] Open
Abstract
Aim To identify the most effective laxative for bowel preparation in unsedated colonoscopy. Methods Between April 2019 and April 2020, a total of 586 outpatients scheduled for unsedated colonoscopy at the First Hospital of Jilin University (Changchun, China) were randomized into one of two groups, namely, the polyethylene glycol (PEG) group or the oral sodium phosphate solution (OSP) group. The cleaning efficiency and other relevant clinical parameters were compared between the two groups. Results Each group consisted of 293 patients. There were no significant differences in gender, body mass index, and history of abdominal surgery between the two groups. There were more cases of laxative intolerance in the PEG group than in the OSP group (7.5% vs. 0.7%, P < 0.05). After tube insertion, we found that the cleaning efficiency of OSP was better than that of PEG (P < 0.05). After cleaning, there was no significant difference in bowel cleanliness between the two groups (P > 0.05). The colonoscopic insertion time of the PEG group was significantly shorter than that of the OSP group (10.0 vs. 12.0 min, P = 0.002), and colonoscopic insertion was more difficult in the OSP group than in the PEG group (P = 0.036). The VAS score of the PEG group patients was significantly lower than that of OSP group patients (4.0 ± 1.3 vs. 5.2 ± 1.7, P ≤ 0.001). There were no significant differences in the cecal intubation rate and the detection rate of polyps and ulcers/erosion between the two groups. Conclusion The cleaning efficiency and tolerability of OSP were preferable to those of PEG, but there was no significant difference in bowel cleanliness after washing the colon and suctioning the fluid. Compared with patients of the OSP group, those of the PEG group required a shorter colonoscopic insertion time and reported a more comfortable experience. Therefore, for cases that are tolerant of PEG, PEG is a better choice for unsedated colonoscopy.
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Htet H, Segal J. New Ultra Low Volume Bowel Preparation and Overview of Existing Bowel Preparations. Curr Drug Metab 2020; 21:844-849. [PMID: 32778022 DOI: 10.2174/1567201817666200810112136] [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: 02/18/2020] [Revised: 06/02/2020] [Accepted: 06/09/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Adequate bowel cleansing is essential in achieving a good quality colonoscopy. However, one of the barriers to achieving high-quality bowel cleansing is the patient's tolerability. Different bowel preparations have been developed to improve tolerability while maintaining adequate bowel cleansing. OBJECTIVES We aim to explore the pros and cons of commonly used bowel preparations, particularly highlighting the new ultra-low volume bowel preparation. METHODS Extensive literature search was carried out on various databases to evaluate the effectiveness and side effects of different bowel cleansing agents, including findings of recent clinical trials on ultra-low bowel preparation. RESULTS Polyethylene glycol (PEG) has been commonly used as a bowel prep. Due to its high volume required to ingest to achieve an adequate effect, it has been combined with various adjuncts to reduce the volume to make it more tolerable. Magnesium and phosphate-based preps can achieve low volume, but they can be associated with multiple side effects, mainly electrolyte disturbances. Ultra low volume prep (NER1006) was achieved by combing PEG with ascorbic acid, and its efficacy and side effects were demonstrated in three noninferiority studies. CONCLUSION It is important to consider patient preferences, co-morbidities and tolerability, and efficacy and side effect profiles when choosing bowel prep for patients undergoing colonoscopy. New ultra-low bowel prep showed promising results in initial clinical trials, but further real-world post-marketing data will inform its value in clinical practice.
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Affiliation(s)
- Hein Htet
- Department of Gastroenterology, St Richard's Hospital, Chichester, United Kingdom
| | - Jonathan Segal
- Department of Gastroenterology, St Mary's Hospital, London, United Kingdom
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Medina-Liabres KRP, Kim BM, Kim S. Biopsy-proven acute phosphate nephropathy: A case report. World J Clin Cases 2020; 8:2585-2589. [PMID: 32607335 PMCID: PMC7322417 DOI: 10.12998/wjcc.v8.i12.2585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/27/2020] [Accepted: 05/29/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Acute phosphate nephropathy (APN) is a disease that can occur when exposed to high doses of phosphate. The most common cause of APN is the use of oral sodium phosphate for bowel cleansing preparations. However, there are other less commonly known sources of phosphate that are equally important. To date, our literature search did not identify any report of excessive dietary phosphate as a cause of APN.
CASE SUMMARY We report an unusual case of a 39-year-old diabetic male who presented with epigastric pain and oliguria. Work-up showed elevated serum creatinine, potassium, and calcium-phosphate product, and metabolic acidosis. The patient was admitted in the intensive care unit and received emergent renal replacement therapy. Kidney biopsy revealed tubular cell injury with transparent crystal casts positive for Von Kossa staining, which established the diagnosis of APN.
CONCLUSION This case confirmed that APN may occur with other sources of phosphorus, highlighting the importance of good history taking and kidney biopsy in patients with predisposing factors for APN. Raising awareness on the possibility of APN and its timely recognition and management is imperative so that appropriate measures can be instituted to prevent or delay its progression to end stage renal disease.
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Affiliation(s)
| | - Bo Mi Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si 13620, Gyeonggi-do, South Korea
| | - Sejoong Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si 13620, Gyeonggi-do, South Korea
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Takasugi S, Shioyama M, Kitade M, Nagata M, Yamaji T. Involvement of estrogen in phosphorus-induced nephrocalcinosis through fibroblast growth factor 23. Sci Rep 2020; 10:4864. [PMID: 32184468 PMCID: PMC7078323 DOI: 10.1038/s41598-020-61858-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 03/02/2020] [Indexed: 12/02/2022] Open
Abstract
Excessive phosphorus intake adversely affects bone and mineral metabolism. Estrogen is one of the factors affecting fibroblast growth factor 23 (FGF23), a phosphorus-regulating hormone. However, the interaction between excess phosphorus and estrogen status has not been fully elucidated. This study investigated the involvement of estrogen in the effects of high phosphorus intake on bone metabolism and ectopic calcification in ovariectomized (OVX) rats. The interaction between high phosphorus diet and OVX was not observed in bone mineral density and aortic calcium. In contrast, high phosphorus intake markedly increased renal calcium concentration in sham rats, whereas the effect was attenuated in OVX rats, which was reversed by a selective estrogen-receptor modulator treatment. A strong positive correlation between renal calcium and serum FGF23 was observed. In addition, fibroblast growth factor receptor 1 (FGFR1: a predominant receptor of FGF23) inhibitor treatment partially decreased renal calcium concentrations in rats with high phosphorus intake. In conclusion, the effect of high phosphorus intake on bone metabolism and aortic calcification did not depend on the estrogen status; in contrast, high phosphorus intake synergistically induced nephrocalcinosis in the presence of estrogenic action on the bone. Furthermore, FGF23 was involved in the nephrocalcinosis induced by high phosphorus intake partially through FGFR1 signaling.
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Affiliation(s)
- Satoshi Takasugi
- Division of Research and Development, Meiji Co., Ltd., Tokyo, 192-0919, Japan.
| | - Miho Shioyama
- Division of Research and Development, Meiji Co., Ltd., Tokyo, 192-0919, Japan
| | - Masami Kitade
- Division of Research and Development, Meiji Co., Ltd., Tokyo, 192-0919, Japan
| | - Masashi Nagata
- Division of Research and Development, Meiji Co., Ltd., Tokyo, 192-0919, Japan
| | - Taketo Yamaji
- Division of Research and Development, Meiji Co., Ltd., Tokyo, 192-0919, Japan
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26
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Na SY, Moon W. [Optimal Laxatives for Oral Colonoscopy Bowel Preparation: from High-volume to Novel Low-volume Solutions]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2020; 75:65-73. [PMID: 32098459 DOI: 10.4166/kjg.2020.75.2.65] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 12/14/2022]
Abstract
Optimal bowel preparation is essential for a more accurate, comfortable, and safe colonoscopy. The majority of postcolonoscopy colorectal cancers can be explained by procedural factors, mainly missed polyps or inadequate examination. Therefore the most important goal of optimal bowel preparation is to reduce the incidence of colorectal cancer. Although adequate preparation should be achieved in 85-90% or more of all colonoscopy as a quality indicator, unfortunately 20-30% shows inadequate preparation. Laxatives for oral colonoscopy bowel preparation can be classified into polyethylene glycol (PEG)-electrolyte lavage solution, osmotic laxatives, stimulant laxatives, and divided into high-volume solution (≥3 L) and low-volume solution (<3 L). The updated 2019 European Society of Gastrointestinal Endoscopy (ESGE) guideline is broadly similar to the 2014 American Society for Gastrointestinal Endoscopy (ASGE) recommendations and reaffirms the importance of split-dosing. However, new ESGE guideline, unlike the 2014 ASGE recommendation, suggests the use of high volume or low volume PEG-based regimens as well as that of non-PEG based agents that have been clinically validated for most outpatient scenarios. For effective, safe, and highly adherent bowel preparation, physicians who prescribe and implement colonoscopy should properly know the advantages and limitations, the dosing, and the timing of regimens. Recently many studies have attempted to find the most ideal regimens, and more convenient, effective, and safe regimens have been developed by reducing the dosing volume and improving the taste. The high tolerability and acceptability of the new low-volume regimens suggest us how we should use it to increase the participation of the national colorectal cancer screening program.
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Affiliation(s)
- Soo-Young Na
- Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea
| | - Won Moon
- Department of Internal Medicine, Kosin University College of Medicine, Busan, Korea
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Renal accumulation of prooxidant mineral elements and CKD in domestic cats. Sci Rep 2020; 10:3160. [PMID: 32081923 PMCID: PMC7035273 DOI: 10.1038/s41598-020-59876-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/17/2020] [Indexed: 01/16/2023] Open
Abstract
Felids have a high incidence of chronic kidney disease (CKD), for which the most common renal lesion is chronic interstitial nephritis (CIN). CIN can be induced by tissue oxidative stress, which is determined by the cellular balance of pro- and anti-oxidant metabolites. Fish-flavoured foods are more often fed to cats than dogs, and such foods tend to have higher arsenic content. Arsenic is a pro-oxidant metallic element. We propose that renal accumulation of pro-oxidant elements such as arsenic and depletion of anti-oxidant elements such as zinc, underpin the high incidence of CIN in domestic cats. Total arsenic and other redox-reactive metal elements were measured in kidneys (after acid-digestion) and urine (both by inductively-coupled plasma-mass spectrometry) of domestic cats (kidneys, n = 56; urine, n = 21), domestic dogs (kidneys, n = 54; urine, n = 28) and non-domesticated Scottish Wildcats (kidneys, n = 17). Renal lesions were graded by severity of CIN. In our randomly sampled population, CIN was more prevalent in domestic cat versus domestic dog (51%, n = 32 of 62 cats; 15%, 11 of 70 dogs were positive for CIN, respectively). CIN was absent from all Scottish wildcats. Tissue and urinary (corrected for creatinine) arsenic content was higher in domestic cats, relative to domestic dogs and wildcats. Urine arsenic was higher in domestic cats and dogs with CIN. Arsenobetaine, an organic and relatively harmless species of arsenic, was the primary form of arsenic found in pet foods. In summary, the kidneys of domestic cats appear to have greater levels of pro-oxidant trace elements, as compared to dogs and wildcats. Since there was no difference in renal arsenic levels in cats with or without CIN, renal arsenic accumulation does not appear a primary driver of excess CIN in cats. Given clear differences in renal handling of pro vs. anti-oxidant minerals between cats and dogs, further in vivo balance studies are warranted. These may then inform species-specific guidelines for trace element incorporation into commercial diets.
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Nicholas Cossey L, Dvanajscak Z, Larsen CP. A diagnostician's field guide to crystalline nephropathies. Semin Diagn Pathol 2020; 37:135-142. [PMID: 32178905 DOI: 10.1053/j.semdp.2020.02.002] [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: 12/12/2019] [Revised: 02/15/2020] [Accepted: 02/19/2020] [Indexed: 12/22/2022]
Abstract
The kidney's role in filtration of blood and production of urine occurs via a combination of size and charge filtration at the glomerular basement membrane and resorption and excretion of molecules through a complex tubular system embedded within an ion gradient. This delicate system provides the kidney with a unique propensity for substrate saturation and crystal nucleation within the nephron. While crystalline nephropathies may seem exotic to the uninitiated, they are comprised of easily recognizable morphologies and generally lack complicated classification schemas. Additionally, unlike many intrinsic kidney diseases, crystalline nephropathies are often associated with systemic conditions that, upon further investigation, may elucidate critically important information. This review focuses on practical, diagnostically relevant and high yield information that can be utilized by diagnosticians. Our hope is to equip the reader who reviews renal tissue with a practical toolkit that they feel empowered to use when faced with crystal formation in a kidney biopsy, pre-implantation biopsy, or nephrectomy specimen. Short Abstract The kidney's role in filtration of blood and production of urine provides a unique propensity for substrate saturation and crystal nucleation within the nephron. While crystalline nephropathies may seem exotic to the uninitiated, they are comprised of easily recognizable morphologies and generally lack complicated classification. Additionally, crystalline nephropathies are often associated with systemic conditions that, upon further investigation, may elucidate critically important information.
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Yang HJ, Park DI, Park SK, Lee CK, Kim HJ, Oh SJ, Moon JR, Lee BJ, Koh JS, Kim HS, Park SY, Kim DH, Chun J, Kang EA, Kim J, Soh H, Eun CS, Kim YS, Jeen YT. Novel sulfate tablet PBK-1701TC versus oral sulfate solution for colon cleansing: A randomized phase 3 trial. J Gastroenterol Hepatol 2020; 35:29-36. [PMID: 31396995 DOI: 10.1111/jgh.14826] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/13/2019] [Accepted: 08/06/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND AIM PBK-1701TC is a novel sulfate tablet-based that contains 320 mg of simethicone and delivers 90% of the salt and water delivered by oral sulfate solution (OSS) preparation. This study evaluated the efficacy, safety, and tolerability of PBK-1701TC compared with OSS in bowel preparation for colonoscopy. METHODS This randomized, multicenter, phase 3 non-inferiority trial included adults aged 19 years or older with a body mass index of 19-30 kg/m2 undergoing colonoscopy at five university hospitals in Korea. The primary efficacy endpoint was successful bowel-cleansing rate, defined as Harefield Cleansing Scale grade A or B as evaluated by blinded central readers. Secondary endpoints included the presence of residual air bubbles. Adverse events and laboratory evaluations were monitored to assess safety. Tolerability was assessed via participant interview. RESULTS Overall, 235 participants were randomized, and 224 were included in the per-protocol analysis (PBK, 112; OSS, 112). Successful bowel cleansing was achieved for 95.5% (107/112) in the PBK group, which was non-inferior to the OSS group (98.2%, 110/112) with a difference of -2.7% (one sided 97.5% confidence limit, -8.1%). The participants in the PBK group had fewer intraluminal bubbles (0.9% vs 81.3%, P < 0.001) and reported a lower incidence of nausea and vomiting, with better acceptance, taste, and willingness to repeat the regimen than those in the OSS group (all P < 0.05). CONCLUSION The novel sulfate tablet, PBK-1701TC, was non-inferior to OSS with respect to bowel-cleansing efficacy and exhibited better safety and tolerability in adults undergoing colonoscopy.
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Affiliation(s)
- Hyo-Joon Yang
- Division of Gastroenterology, Department of Internal Medicine and Gastrointestinal Cancer Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Dong Il Park
- Division of Gastroenterology, Department of Internal Medicine and Gastrointestinal Cancer Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo-Kyung Park
- Division of Gastroenterology, Department of Internal Medicine and Gastrointestinal Cancer Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chang Kyun Lee
- Center for Crohn's and Colitis, Department of Gastroenterology and Hepatology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Hyo Jong Kim
- Center for Crohn's and Colitis, Department of Gastroenterology and Hepatology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Shin Ju Oh
- Center for Crohn's and Colitis, Department of Gastroenterology and Hepatology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jung Rock Moon
- Center for Crohn's and Colitis, Department of Gastroenterology and Hepatology, Kyung Hee University School of Medicine, Seoul, Korea
| | - Beom Jae Lee
- Division of Gastroenterology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Jin Sung Koh
- Division of Gastroenterology, Department of Internal Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Hyun Soo Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Seon-Young Park
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Dong Hyun Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Jaeyoung Chun
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Eun Ae Kang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Jung Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hosim Soh
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Chang Soo Eun
- Department of Internal Medicine, Hanyang University Guri Hospital, Gyeonggi-Do, Korea
| | - You Sun Kim
- Department of Internal Medicine, Seoul Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - Yoon Tae Jeen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Nee J, Chippendale RZ, Feuerstein JD. Screening for Colon Cancer in Older Adults: Risks, Benefits, and When to Stop. Mayo Clin Proc 2020; 95:184-196. [PMID: 31902414 DOI: 10.1016/j.mayocp.2019.02.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 02/08/2019] [Accepted: 02/19/2019] [Indexed: 12/26/2022]
Abstract
Colorectal cancer (CRC) is the fourth leading cause of cancer and second leading cause of mortality from cancer in the United States. As the population ages, decisions regarding the initiation and cessation of screening and surveillance for CRC are of increasing importance. In elderly patients, the risks of CRC and the presenting signs and symptoms are similar to those in younger patients. Screening and ongoing surveillance should be considered in patients who have a life expectancy of 10 years or more. Life expectancy estimates can be calculated using online calculators. If screening is deemed appropriate, the choice of which test to use first is unclear. Currently, there are a number of modalities available to screen for CRC, including both invasive modalities (eg, colonoscopy, sigmoidoscopy, capsule colonoscopy, and computed tomographic colonography) and noninvasive modalities (fecal immunochemical test, stool DNA testing, and blood testing). Colonoscopy and other invasive testing options are considered safe, but the risks of complications of the bowel preparation, the procedure, and sedation medications are all increased in older patients. In contrast, noninvasive testing provides a safe initial test; however, it is important to consider the increased false-positive rates in the elderly, and a positive test result will usually necessitate colonoscopy to establish the diagnosis. Ongoing screening and surveillance should be a shared decision-making process with the patient based on multiple factors including the patient's morbidity and mortality risk from CRC and his or her underlying comorbidities, the patient's functional status, and the patient's preferences for screening. Ultimately, the decision to initiate or discontinue screening for CRC in older patients should be done based on a case-by-case individualized discussion.
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Affiliation(s)
- Judy Nee
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Ryan Z Chippendale
- Division of Geriatrics, Department of Medicine, Boston Medical Center, Boston MA
| | - Joseph D Feuerstein
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
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Summers SC, Stockman J, Larsen JA, Zhang L, Rodriguez AS. Evaluation of phosphorus, calcium, and magnesium content in commercially available foods formulated for healthy cats. J Vet Intern Med 2019; 34:266-273. [PMID: 31883277 PMCID: PMC6979088 DOI: 10.1111/jvim.15689] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 12/11/2019] [Indexed: 01/06/2023] Open
Abstract
Background High dietary phosphorus (P) and low calcium‐to‐phosphorus ratio (Ca:P) are associated with kidney damage in cats. There are no established guidelines for dietary P maximum for cats. Objectives To quantify crude protein, P, Ca, and magnesium (Mg) concentrations in cat foods and compare among food formats (dry, canned, raw), primary protein ingredients, protein concentrations (low, moderate, high), grain‐free versus grain‐containing foods, foods intended for adult maintenance versus all life stages, and cost. Samples Eighty‐two commercial nonprescription cat foods. Methods Descriptive study. Mineral concentrations were measured using inductively coupled argon plasma‐optical emission spectroscopy. Crude protein was measured using the Dumas nitrogen combustion method. Mineral and crude protein concentrations were compared among food categories. Results Twenty‐seven foods contained ≥3.6 g P/1000 kcal metabolizable energy (ME), of which 7 exceeded 4.8 g/1000 kcal ME. Thirteen foods had low Ca:P ratio (≤1.0). The low‐protein diet group had no products ≥3.6 g P/1000 kcal ME, which was significantly different compared to the high‐protein diet group (52% of products had ≥3.6 g P/1000 kcal ME; P = .01). No significant differences in P content and Ca:P ratio were found among other diet categories. Canned foods had significantly lower Mg compared to dry (P < .001) and raw (P = .007) foods. Declared minimum P and Ca were significantly lower than analyzed concentrations (P = .0005 and P = .003, respectively). Conclusions and Clinical Importance The high number of foods with high P and low Ca suggest that pet food regulatory reform should be considered.
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Affiliation(s)
| | | | | | - Lei Zhang
- Colorado State University, Fort Collins, Colorado
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Mehta R, Cai X, Lee J, Xie D, Wang X, Scialla J, Anderson AH, Taliercio J, Dobre M, Chen J, Fischer M, Leonard M, Lash J, Hsu CY, de Boer IH, Feldman HI, Wolf M, Isakova T. Serial Fibroblast Growth Factor 23 Measurements and Risk of Requirement for Kidney Replacement Therapy: The CRIC (Chronic Renal Insufficiency Cohort) Study. Am J Kidney Dis 2019; 75:908-918. [PMID: 31864822 DOI: 10.1053/j.ajkd.2019.09.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 09/16/2019] [Indexed: 12/24/2022]
Abstract
RATIONALE & OBJECTIVE Studies using a single measurement of fibroblast growth factor 23 (FGF-23) suggest that elevated FGF-23 levels are associated with increased risk for requirement for kidney replacement therapy (KRT) in patients with chronic kidney disease. However, the data do not account for changes in FGF-23 levels as kidney disease progresses. STUDY DESIGN Case-cohort study. SETTING & PARTICIPANTS To evaluate the association between serial FGF-23 levels and risk for requiring KRT, our primary analysis included 1,597 individuals in the Chronic Renal Insufficiency Cohort Study who had up to 5 annual measurements of carboxy-terminal FGF-23. There were 1,135 randomly selected individuals, of whom 266 initiated KRT, and 462 individuals who initiated KRT outside the random subcohort. EXPOSURE Serial FGF-23 measurements and FGF-23 trajectory group membership. OUTCOMES Incident KRT. ANALYTICAL APPROACH To handle time-dependent confounding, our primary analysis of time-updated FGF-23 levels used time-varying inverse probability weighting in a discrete time failure model. To compare our results with prior data, we used baseline and time-updated FGF-23 values in weighted Cox regression models. To examine the association of FGF-23 trajectory subgroups with risk for incident KRT, we used weighted Cox models with FGF-23 trajectory groups derived from group-based trajectory modeling as the exposure. RESULTS In our primary analysis, the HR for the KRT outcome per 1 SD increase in the mean of natural log-transformed (ln)FGF-23 in the past was 1.94 (95% CI, 1.51-2.49). In weighted Cox models using baseline and time-updated values, elevated FGF-23 level was associated with increased risk for incident KRT (HRs per 1 SD ln[FGF-23] of 1.18 [95% CI, 1.02-1.37] for baseline and 1.66 [95% CI, 1.49-1.86] for time-updated). Membership in the slowly and rapidly increasing FGF-23 trajectory groups was associated with ∼3- and ∼21-fold higher risk for incident KRT compared to membership in the stable FGF-23 trajectory group. LIMITATIONS Residual confounding and lack of intact FGF-23 values. CONCLUSIONS Increasing FGF-23 levels are independently associated with increased risk for incident KRT.
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Affiliation(s)
- Rupal Mehta
- Division of Nephrology and Hypertension, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL; Center for Translational Metabolism and Health, Institute of Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL; Jesse Brown Veterans Administration Medical Center, Chicago, IL.
| | - Xuan Cai
- Center for Translational Metabolism and Health, Institute of Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Jungwha Lee
- Center for Translational Metabolism and Health, Institute of Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
| | - Dawei Xie
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, PA; Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine at the University of Pennsylvania, PA
| | - Xue Wang
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, PA; Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine at the University of Pennsylvania, PA
| | - Julia Scialla
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC; Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC
| | - Amanda H Anderson
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA
| | - Jon Taliercio
- Department of Nephrology and Hypertension, Cleveland Clinic, Cleveland, OH
| | - Mirela Dobre
- Division of Nephrology and Hypertension, University Hospitals, Cleveland Medical Center, Cleveland, OH
| | - Jing Chen
- Department of Medicine, Tulane University School of Medicine, New Orleans, LA
| | - Michael Fischer
- Jesse Brown Veterans Administration Medical Center, Chicago, IL; Division of Nephrology, Department of Medicine, University of Illinois at Chicago College of Medicine and Center of Innovation for Complex Chronic Healthcare, Chicago, IL
| | - Mary Leonard
- Department of Pediatrics, Stanford University, Stanford, CA; Department of Medicine, Stanford University, Stanford, CA
| | - James Lash
- Division of Nephrology, Department of Medicine, University of Illinois at Chicago College of Medicine and Center of Innovation for Complex Chronic Healthcare, Chicago, IL
| | - Chi-Yuan Hsu
- Division of Nephrology, Department of Medicine, University of California, San Francisco, San Francisco, CA
| | - Ian H de Boer
- Division of Nephrology and Kidney Research Institute, University of Washington, Seattle, WA
| | - Harold I Feldman
- Department of Biostatistics, Epidemiology, and Informatics, Perelman School of Medicine at the University of Pennsylvania, PA; Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine at the University of Pennsylvania, PA; Renal Electrolyte and Hypertension Division, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, PA
| | - Myles Wolf
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC; Duke Clinical Research Institute, Duke University School of Medicine, Durham, NC
| | - Tamara Isakova
- Division of Nephrology and Hypertension, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL; Center for Translational Metabolism and Health, Institute of Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL
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Yang HJ, Park DI, Park SK, Kim S, Lee T, Jung Y, Eun CS, Han DS. A Randomized Controlled Trial Comparing Colonoscopic Enema With Additional Oral Preparation as a Salvage for Inadequate Bowel Cleansing Before Colonoscopy. J Clin Gastroenterol 2019; 53:e308-e315. [PMID: 30001288 DOI: 10.1097/mcg.0000000000001087] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
GOALS The goal of this study was to evaluate the noninferiority of colonoscopic enema to additional oral preparation in salvage bowel cleansing for inadequate preparation for a morning colonoscopy. BACKGROUND Colonoscopic enema, administering additional cathartics into the right colon through the colonoscope accessory channel, is suggested to rescue poor bowel preparation for a colonoscopy but lacking comparative study. STUDY In this prospective, randomized, actively-controlled, parallel group, noninferiority trial, consecutive outpatients and health checkup recipients aged from 19 to 70 years with inappropriate bowel preparation during an elective colonoscopy were enrolled to receive either a colonoscopic enema of 1 L polyethylene glycol (PEG) (enema group) or additional oral intake of 2 L PEG (oral group). The primary endpoint was the proportion of adequate bowel preparation evaluated using the Boston Bowel Preparation Scale. RESULTS Overall, 131 participants were randomized. Adequate bowel preparation was achieved in 53% (35/66) of the enema group, which was significantly inferior to the oral group (81.5%; 53/67) with a difference of -28.5% (95% confidence interval, -44.1, -12.9; P=0.001). The largest difference in the proportion of adequate bowel preparation was observed in the right colon (57.8% in the enema group vs. 86.9% in the oral group; P<0.001), followed by the transverse colon (85.9% vs. 98.4%; P=0.017) and the left colon (90.6% vs. 96.7%; P=0.274). CONCLUSIONS The colonoscopic enema of 1 L PEG was inferior to the additional oral ingestion of 2 L PEG regarding efficacy as a salvage bowel preparation in adults with inadequate bowel cleansing for colonoscopy.
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Affiliation(s)
- Hyo-Joon Yang
- Department of Internal Medicine and Gastrointestinal Cancer Center, Division of Gastroenterology
| | - Dong Il Park
- Department of Internal Medicine and Gastrointestinal Cancer Center, Division of Gastroenterology
| | - Soo-Kyung Park
- Department of Internal Medicine and Gastrointestinal Cancer Center, Division of Gastroenterology
| | - Sunyong Kim
- Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul
| | - Taeheon Lee
- Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul
| | - Yunho Jung
- Department of Internal Medicine, Division of Gastroenterology, Soonchunhyang University College of Medicine, Cheonan
| | - Chang Soo Eun
- Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Republic of Korea
| | - Dong Soo Han
- Department of Internal Medicine, Hanyang University Guri Hospital, Guri, Republic of Korea
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Zhu ACC, Agarwala A, Bao X. Perioperative Fluid Management in the Enhanced Recovery after Surgery (ERAS) Pathway. Clin Colon Rectal Surg 2019; 32:114-120. [PMID: 30833860 DOI: 10.1055/s-0038-1676476] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fluid management is an essential component of the Enhanced Recovery after Surgery (ERAS) pathway. Optimal management begins in the preoperative period and continues through the intraoperative and postoperative phases. In this review, we outline current evidence-based practices for fluid management through each phase of the perioperative period. Preoperatively, patients should be encouraged to hydrate until 2 hours prior to the induction of anesthesia with a carbohydrate-containing clear liquid. When mechanical bowel preparation is necessary, with modern isoosmotic solutions, fluid repletion is not necessary. Intraoperatively, fluid therapy should aim to maintain euvolemia with an individualized approach. While some patients may benefit from goal-directed fluid therapy, a restrictive, zero-balance approach to intraoperative fluid management may be reasonable. Postoperatively, early initiation of oral intake and cessation of intravenous therapy are recommended.
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Affiliation(s)
- Alyssa Cheng-Cheng Zhu
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Aalok Agarwala
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
| | - Xiaodong Bao
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts
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Tamaki H, Noda T, Morita M, Omura A, Kubo A, Ogawa C, Matsunaka T, Shibatoge M. Efficacy of 1.2 L polyethylene glycol plus ascorbic acid for bowel preparations. World J Clin Cases 2019; 7:452-465. [PMID: 30842956 PMCID: PMC6397816 DOI: 10.12998/wjcc.v7.i4.452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 12/24/2018] [Accepted: 01/24/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND A low-volume polyethylene glycol (PEG) solution that combines ascorbic acid with PEG-based electrolyte solution (PEG-ASC) is gaining mainstream acceptance for bowel preparation due to reduced volume and improved taste. Although several reports showed that bowel preparation with PEG-ASC volume lower than 2.0 L with laxative agents could be an alternative to traditional preparation regimen, the cleansing protocols have not been fully investigated.
AIM To evaluate the cleansing efficacy of 1.2 L PEG-ASC solution comparing with 2.0 L PEG electrolyte (PEG-ELS) for bowel preparations.
METHODS A randomized, single-blinded, open-label, single-center, non-inferiority study was conducted. In total, 312 Japanese adult patients (aged > 18 years) who underwent colonoscopy were enrolled. Patients were randomly allocated to bowel lavage with either 1.2 L of PEG-ASC solution with at least 0.6 L of an additional clear fluid (1.2 L PEG-ASC group) or 2.0 L of PEG-ELS (PEG-ELS group). Then, 48 mg of sennoside was administered at bedtime on the day before colonoscopy, and the designated drug solution was administered at the hospital on the day of colonoscopy. Bowel cleansing was evaluated using the Boston Bowel Preparation Scale (BBPS). The volume of fluid intake and required time for bowel preparation were evaluated. Furthermore, compliance, patient tolerance, and overall acceptability were evaluated using a patient questionnaire, which was assessed using a visual analog scale.
RESULTS In total, 291 patients (1.2 L PEG-ASC group, 148; PEG-ELS group, 143) completed the study. There was no significant difference in successful cleansing, defined as a BBPS score ≥ 2 in each segment, between the two groups (1.2 L PEG-ASC group, 91.9%; PEG-ELS group, 90.2%; 95%CI: -0.03-0.09). The required time for bowel preparation was significantly shorter (164.95 min ± 68.95 min vs 202.16 min ± 68.69 min, P < 0.001) and the total fluid intake volume was significantly lower (2.23 L ± 0.55 L vs 2.47 L ± 0.56 L, P < 0.001) in the 1.2 L PEG-ASC group than in the PEG-ELS group. Palatability, acceptability of the volume of solution, and overall acceptability evaluated using a patient questionnaire, which was assessed by the visual analog scale, were significantly better in the 1.2 L PEG-ASC group than in the PEG-ELS group (7.70 cm ± 2.57 cm vs 5.80 cm ± 3.24 cm, P < 0.001). No severe adverse event was observed in each group.
CONCLUSION The 1.2 L PEG-ASC solution was non-inferior to the 2.0 L PEG-ELS solution in terms of cleansing efficacy and had better acceptability among Japanese patients.
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Affiliation(s)
- Hiroyuki Tamaki
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Teruyo Noda
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Masahiro Morita
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Akina Omura
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Atsushi Kubo
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Chikara Ogawa
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Toshihiro Matsunaka
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
| | - Mitsushige Shibatoge
- Department of Gastroenterology, Takamatsu Red Cross Hospital, Takamatsu, Kagawa 760-0017, Japan
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Phosphate binding by sucroferric oxyhydroxide ameliorates renal injury in the remnant kidney model. Sci Rep 2019; 9:1732. [PMID: 30741979 PMCID: PMC6370755 DOI: 10.1038/s41598-018-38389-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 12/27/2018] [Indexed: 12/11/2022] Open
Abstract
Recent clinical studies indicate that the disturbed phosphate metabolism in chronic kidney disease (CKD) may facilitate kidney injury; nonetheless, the causal role of phosphate in CKD progression remains to be elucidated. Here, we show that intestinal phosphate binding by sucroferric oxyhydroxide (SF) ameliorates renal injury in the rat remnant kidney model. Sprague-Dawley rats received 5/6 nephrectomy (RK) and had a normal chow or the same diet containing SF (RK + SF). RK rats showed increased plasma FGF23 and phosphate levels, which were suppressed by SF administration. Of note, albuminuria in RK rats was significantly ameliorated by SF at both 4 and 8 weeks. SF also attenuated glomerulosclerosis and tubulointerstitial injury. Moreover, several different approaches confirmed the protective effects on podocytes, explaining the attenuation of glomerulosclerosis and albuminuria observed in this study. As a possible mechanism, we found that SF attenuated renal inflammation and fibrosis in RK rats. Interestingly, von Kossa staining of the kidney revealed calcium phosphate deposition in neither RK nor RK + SF rats; however, plasma levels of calciprotein particles were significantly reduced by SF. These data indicate that latent positive phosphate balance accelerates CKD progression from early stages, even when overt ectopic calcification is absent.
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Parekh PJ, Oldfield EC, Johnson DA. Bowel preparation for colonoscopy: what is best and necessary for quality? Curr Opin Gastroenterol 2019; 35:51-57. [PMID: 30489414 DOI: 10.1097/mog.0000000000000494] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
PURPOSE OF REVIEW Colonoscopy is recognizably, the best colon cancer prevention test, provided the quality of the preparation is adequate for detection of precancerous polyps but also allowing for accurate identification of margins, thereby facilitating complete endoscopic resection. As there are many aspects effecting colon prep outcomes, it is timely to review new standards for optimizing outcomes, including product selection based on patient demographics. RECENT FINDINGS New national guidelines have set a minimum quality threshold for adequacy and also defined a split day delivery for oral options as the "standard of care". Several new prep options have been recently released and these data are discussed. SUMMARY Optimizing the quality of colon preps has major implications for clinical practice. Clinicians must recognize new targets for standard of care, providing the best approach for each individual patient, considering variable factors which may otherwise compromise success.
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Affiliation(s)
| | - Edward C Oldfield
- Department of Internal Medicine, Eastern Virginia Medical School, Norfolk, Virginia, USA
| | - David A Johnson
- Department of Internal Medicine, Eastern Virginia Medical School, Norfolk, Virginia, USA
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Moulin B, Ponchon T. A comparative review of use of sulphate and phosphate salts for colonoscopy preparations and their potential for nephrotoxicity. Endosc Int Open 2018; 6:E1206-E1213. [PMID: 30302378 PMCID: PMC6175689 DOI: 10.1055/a-0581-8723] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/28/2017] [Indexed: 12/23/2022] Open
Abstract
Background and study aims Colonoscopy is a widely used diagnostic procedure which requires prior cleansing of the bowel. Many different bowel cleansing preparations have been developed, all of which have specific advantages and disadvantages. This review compares two low-volume high-osmolarity bowel cleansing preparations, oral phosphate salts and oral sulphate salts, with a particular focus on risk of nephrotoxicity. Patients and methods An electronic search of the Medline database was performed using the search terms "(phosphates OR sulfates) AND cathartics [MeSH Term] AND kidney" restricted to humans with a cut-off date of December 31, 2016. Results Introduction of oral phosphate salts offered the advantage of low intake volume and low risk of bowel irritation compared to previous options. However, phosphate salts have been associated with renal toxicity (acute phosphate nephropathy [APN]), thought to arise due to perturbations of calcium and phosphate homeostasis as a consequence of increases in serum phosphate. This results in high concentrations of calcium phosphate in the distal tubule and collecting ducts of the kidney, where it may precipitate. Although APN is rare, it may lead to permanent kidney damage. For this reason, phosphate salts are contraindicated in vulnerable patient groups. As an alternative to phosphate salts, oral sulphate salts have recently been introduced. Because sulphate absorption from the intestinal tract is saturable, serum sulphate concentrations increase only minimally after ingestion. Furthermore, excretion of sulphate in the kidney is not accompanied by calcium excretion and urine calcium levels are unchanged. For these theoretical reasons, use of sulphate salts as bowel cleansing solutions is not expected to lead to calcium precipitation in the nephron. Conclusions Oral phosphate salts are no longer recommended for routine use as bowel cleansing preparations as they carry significant risk of kidney damage and a safer alternative is available in the form of oral sulphate solutions. To date, use of sulphate salts has not been associated with elevations in serum creatinine or other markers of renal impairment, nor with clinical manifestations of kidney injury. Nonetheless, experience with sulphate salts in everyday practice is limited and physicians should be vigilant in detecting potential safety issues.
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Affiliation(s)
- Bruno Moulin
- Nephrology Department, Strasbourg University Hospital, 67091 Strasbourg, France,Corresponding author Pr. Bruno Moulin Service de néphrologie et transplantation rénaleCHU de Strasbourg – Nouvel Hôpital Civil1, place de l'HôpitalBP 42667091 Strasbourg CedexFrance+33 3 69 55 17 21
| | - Thierry Ponchon
- Hepatogastroenterology Department, Edouard Herriot Hospital, 69000 Lyon, France
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Davies MRP, Williams D, Niewiadomski OD. Phosphate nephropathy: an avoidable complication of bowel preparation for colonoscopy. Intern Med J 2018; 48:1141-1144. [PMID: 30182391 DOI: 10.1111/imj.14015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 02/22/2018] [Accepted: 03/01/2018] [Indexed: 01/21/2023]
Abstract
It is known that oral sodium phosphate, used as bowel preparation for colonoscopy, can cause acute phosphate nephropathy, a potentially severe and irreversible form of acute kidney injury. Due to these safety concerns, guidelines have advised against the routine use of this agent for a decade. We present a case report and biopsy series that demonstrate that oral sodium phosphate is still being used and that cases of APN are still occurring, in Australia.
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Affiliation(s)
| | - David Williams
- Department of Anatomical Pathology, Austin Hospital, Melbourne, Victoria, Australia
| | - Olga D Niewiadomski
- Department of Gastroenterology, Eastern Heath, Melbourne, Victoria, Australia
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Lebensbedrohliche Acidose nach Ingestion von ABC-Löschpulver. Anaesthesist 2018; 67:674-678. [DOI: 10.1007/s00101-018-0477-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 06/28/2018] [Accepted: 07/17/2018] [Indexed: 10/28/2022]
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Tsunezumi J, Sugiura H, Oinam L, Ali A, Thang BQ, Sada A, Yamashiro Y, Kuro-O M, Yanagisawa H. Fibulin-7, a heparin binding matricellular protein, promotes renal tubular calcification in mice. Matrix Biol 2018; 74:5-20. [PMID: 29730503 DOI: 10.1016/j.matbio.2018.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 04/28/2018] [Accepted: 04/28/2018] [Indexed: 12/11/2022]
Abstract
Ectopic calcification occurs during development of chronic kidney disease and has a negative impact on long-term prognosis. The precise molecular mechanism and prevention strategies, however, are not established. Fibulin-7 (Fbln7) is a matricellular protein structurally similar to elastogenic short fibulins, shown to bind dental mesenchymal cells and heparin. Here, we report that Fbln7 is highly expressed in renal tubular epithelium in the adult kidney and mediates renal calcification in mice. In vitro analysis revealed that Fbln7 bound heparin at the N-terminal coiled-coil domain. In Fbln7-expressing CHO-K1 cells, exogenous heparin increased the release of Fbln7 into conditioned media in a dose-dependent manner. This heparin-induced Fbln7 release was abrogated in CHO-745 cells lacking heparan sulfate proteoglycan or in CHO-K1 cells expressing the Fbln7 mutant lacking the N-terminal coiled-coil domain, suggesting that Fbln7 was tethered to pericellular matrix via this domain. Interestingly, Fbln7 knockout (Fbln7-/-) mice were protected from renal tubular calcification induced by high phosphate diet. Mechanistically, Fbln7 bound artificial calcium phosphate particles (aCPP) implicated in calcification and renal inflammation. Binding was decreased significantly in Fbln7-/- primary kidney cells relative to wild-type cells. Further, overexpression of Fbln7 increased binding to aCPP. Addition of heparin reduced binding between aCPP and wild-type cells to levels of Fbln7-/- cells. Taken together, our study suggests that Fbln7 is a local mediator of calcium deposition and that releasing Fbln7 from the cell surface by heparin/heparin derivatives or Fbln7 inhibitory antibodies may provide a novel strategy to prevent ectopic calcification in vivo.
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Affiliation(s)
- Jun Tsunezumi
- Department of Medicine, Division of Nephrology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Hidekazu Sugiura
- Fourth Department of Internal Medicine, Tokyo Women's Medical University, Tokyo 162-8666, Japan; Department of Nephrology, Division of Medicine, Saiseikai Kurihashi Hospital, Saitama 349-1105, Japan
| | - Lalhaba Oinam
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba, 305-8577, Japan
| | - Aktar Ali
- Center for Mineral Metabolism and Clinical Research, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Bui Quoc Thang
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; Department of Cardiovascular Surgery, University of Tsukuba, Tsukuba 305-8575, Japan
| | - Aiko Sada
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan
| | - Yoshito Yamashiro
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan
| | - Makoto Kuro-O
- Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Hiromi Yanagisawa
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba 305-8577, Japan; Faculty of Medicine, University of Tsukuba, Tsukuba, 305-8575, Japan.
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Böswald LF, Kienzle E, Dobenecker B. Observation about phosphorus and protein supply in cats and dogs prior to the diagnosis of chronic kidney disease. J Anim Physiol Anim Nutr (Berl) 2018; 102 Suppl 1:31-36. [DOI: 10.1111/jpn.12886] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 02/06/2018] [Indexed: 01/15/2023]
Affiliation(s)
- L. F. Böswald
- Chair of Animal Nutrition and Dietetics; Department of Animal Sciences; Ludwig-Maximilians-Universität; Munich Germany
| | - E. Kienzle
- Chair of Animal Nutrition and Dietetics; Department of Animal Sciences; Ludwig-Maximilians-Universität; Munich Germany
| | - B. Dobenecker
- Chair of Animal Nutrition and Dietetics; Department of Animal Sciences; Ludwig-Maximilians-Universität; Munich Germany
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Dobenecker B, Webel A, Reese S, Kienzle E. Effect of a high phosphorus diet on indicators of renal health in cats. J Feline Med Surg 2018; 20:339-343. [PMID: 28569079 PMCID: PMC11129231 DOI: 10.1177/1098612x17710589] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Objectives High phosphorus intake may further impair renal health in cats with chronic kidney disease (CKD). The hypothesis that a high phosphorus (HP) diet might be nephrotoxic for healthy animals was tested in cats, a species with a high incidence of naturally occurring CKD. Methods Thirteen healthy adult cats were fed a phosphorus excess diet (about five times maintenance requirements), and this HP group was compared with cats on a balanced control diet (CON). The trial lasted for 29 days (10 days of faeces and urine collection). Endogenous creatinine clearance was determined towards the end of the trial. Fresh urine was tested for glucose and proteins. Results Glucosuria and microalbuminuria were observed exclusively in the HP group in 9/13 cats. Creatinine clearance was significantly decreased after feeding HP. In the HP group phosphorus was highly available (apparent digestibility around 60%). Renal phosphorus excretion was significantly increased in the HP group (115 mg/kg body weight/d vs 16 mg/kg body weight/d in the CON group). Conclusions and relevance The intake of a diet with an excessive content of highly available phosphorus may have adverse effects on parameters of kidney function in healthy cats.
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Affiliation(s)
- Britta Dobenecker
- Department of Veterinary Sciences, Ludwig-Maximilians-University Munich, Oberschleißheim, Germany
| | - Anna Webel
- Department of Veterinary Sciences, Ludwig-Maximilians-University Munich, Oberschleißheim, Germany
| | - Sven Reese
- Department of Veterinary Sciences, Ludwig-Maximilians-University Munich, Oberschleißheim, Germany
| | - Ellen Kienzle
- Department of Veterinary Sciences, Ludwig-Maximilians-University Munich, Oberschleißheim, Germany
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46
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Chang HH, Chang FC. Acute phosphate nephropathy - An old issue in the new era. J Formos Med Assoc 2017; 117:348-349. [PMID: 29289413 DOI: 10.1016/j.jfma.2017.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 11/29/2017] [Accepted: 12/04/2017] [Indexed: 01/21/2023] Open
Affiliation(s)
- Hsueh-Hao Chang
- Department of Internal Medicine, Taipei City Hospital, Ren-Ai Branch, Taipei, Taiwan
| | - Fan-Chi Chang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
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Polyethylene Glycol for Small Bowel Capsule Endoscopy. Gastroenterol Res Pract 2017; 2017:7468728. [PMID: 29445394 PMCID: PMC5763085 DOI: 10.1155/2017/7468728] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 11/28/2017] [Indexed: 02/05/2023] Open
Abstract
Capsule endoscopy has been the first-line examination for small bowel diseases, yet its diagnostic yield is restricted by unsatisfactory bowel preparation. To evaluate the clinical effectiveness of different dosages of polyethylene glycol in patients undergoing capsule endoscopy, we performed a comprehensive meta-analysis of all randomized controlled trials involving polyethylene glycol in preparation for capsule endoscopy. The methodological quality of the trials was evaluated using the Cochrane Risk of Bias assessment instrument. In this study, 12 RCTs involving 2072 patients were included in this review. Our review indicated that 4 L and 2 L polyethylene (PEG) before capsule endoscopy (CE) and 500 mL PEG after CE increase the small bowel image quality, whereas 1 L PEG did not improve the small bowel image quality. PEG accelerated the gastric emptying time. There was no significant difference between the PEG group and control group in small bowel transit time, completion rates, and diagnostic yield.
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48
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Ota Y, Yamada A, Kobayashi Y, Niikura R, Shimpoh T, Narita A, Yoshida S, Suzuki N, Watabe H, Hirata Y, Ishihara S, Sunami E, Watanabe T, Koike K. Diagnostic capability of colon capsule endoscopy for advanced colorectal cancer: A pilot study. Dig Endosc 2017; 29:695-701. [PMID: 28295697 DOI: 10.1111/den.12862] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2016] [Accepted: 03/06/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIM Colon capsule endoscopy (CCE) is a safe and effective method for detecting lesions in the colon. However, the sensitivity of CCE in detecting advanced colorectal cancer (CRC) has not been sufficiently evaluated. Therefore, the aim of the present study was to assess the sensitivity of CCE in detecting advanced CRC. METHODS Patients previously diagnosed with advanced CRC by conventional colonoscopy underwent CCE. Primary outcome measure was the sensitivity of CCE in detecting advanced CRC per patient and per lesion. Secondary parameters measured were the sensitivity of CCE in detecting polyps ≥6 mm and ≥10 mm in size in a per-lesion analysis and the safety of CCE. RESULTS Of the 21 advanced CRC lesions in 20 patients, 17 were detected by CCE. The per-patient and per-lesion sensitivities of CCE for detecting advanced CRC lesions were 85% (95% confidence interval [CI]: 62-97%) and 81% (95% CI: 58-95%), respectively. All advanced CRC lesions were diagnosed in the accessible region by CCE while the capsule was still functional. A significant association was found between incomplete CCE and failure to diagnose advanced CRC. No severe adverse events occurred. CONCLUSION The diagnostic capability of CCE in detecting advanced CRC was limited in cases of procedure incompletion. Refining procedures to increase CCE procedure completion rates are required to enhance CRC detection.
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Affiliation(s)
- Yumiko Ota
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Atsuo Yamada
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Yuka Kobayashi
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Ryota Niikura
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Takayuki Shimpoh
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Akiko Narita
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Shuntaro Yoshida
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan.,Department of Endoscopy and Endoscopic Surgery, The University of Tokyo, Tokyo, Japan
| | - Nobumi Suzuki
- Department of Gastroenterology, The Institute for Adult Diseases Asahi Life Foundation, Tokyo, Japan
| | | | - Yoshihiro Hirata
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
| | - Soichiro Ishihara
- Department of Surgical Oncology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Eiji Sunami
- Department of Surgical Oncology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Toshiaki Watanabe
- Department of Surgical Oncology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Kazuhiko Koike
- Department of Gastroenterology, The University of Tokyo, Tokyo, Japan
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Dowdy SC, Nelson G. Enhanced recovery in gynecologic oncology – A sea change in perioperative management. Gynecol Oncol 2017. [DOI: 10.1016/j.ygyno.2017.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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50
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Ako S, Takemoto K, Yasutomi E, Sakaguchi C, Murakami M, Sunami T, Oka S, Kenta H, Okazaki N, Baba Y, Yamasaki Y, Asato T, Kawai D, Takenaka R, Tsugeno H, Hiraoka S, Kato J, Fujiki S. Comparing reduced-dose sodium phosphate tablets to 2 L of polyethylene glycol: A randomized study. World J Gastroenterol 2017; 23:4454-4461. [PMID: 28706429 PMCID: PMC5487510 DOI: 10.3748/wjg.v23.i24.4454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 03/01/2017] [Accepted: 03/31/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To compare the tolerability and quality of bowel cleansing between 2 L polyethylene glycol (PEG) and reduced-dose sodium phosphate (NaP) tablets as a preparation for colonoscopy.
METHODS Two hundred patients were randomly assigned to the PEG or NaP groups at the same ratio. The NaP group patients took 30 tablets with 2 L of clear liquid, while the PEG group patients took 2L of PEG. Tolerability was assessed by a questionnaire about taste, volume, and the overall impression. The bowel cleansing quality was evaluated by colonoscopists.
RESULTS Although NaP showed better tolerability in terms of taste, volume and overall impression (P < 0.01, P < 0.01 and P = 0.02, respectively), the overall cleansing quality was better in the PEG group (P < 0.01). A subgroup analysis, stratified by sex and age, indicated that NaP was associated with better tolerability and equivalent bowel cleansing quality in females of < 50 years of age.
CONCLUSION Despite the better tolerability, the use of 30 NaP tablets with 2 L of clear liquid should be limited due to its lower cleansing quality; however, in certain cases the regimen may deserve consideration, particularly in cases involving young women.
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