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Chow MD, Otersen K, Wassef A, Kong B, Yamarthy S, Rizzolo D, Yang I, Buckley B, Lu A, Crook N, Lee M, Gao J, Naganand S, Stofan MF, Armstrong L, Schumacher J, Taylor R, Henry Z, Basaly V, Yang Z, Zhang M, Huang M, Kagan L, Brunetti L, Sadek R, Lee YH, Guo GL. Effects of intestine-specific deletion of FGF15 on the development of fatty liver disease with vertical sleeve gastrectomy. Hepatol Commun 2024; 8:e0444. [PMID: 38780301 PMCID: PMC11124683 DOI: 10.1097/hc9.0000000000000444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/27/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Vertical sleeve gastrectomy (SGx) is a type of bariatric surgery to treat morbid obesity and metabolic dysfunction-associated steatotic liver disease (MASLD). The molecular mechanisms of SGx to improve MASLD are unclear, but increased bile acids (BAs) and FGF19 (mouse FGF15) were observed. FGF15/19 is expressed in the ileum in response to BAs and is critical in not only suppressing BA synthesis in the liver but also promoting energy expenditure. We hypothesized the reduction of obesity and resolution of MASLD by SGx may be mediated by FGF15/19. METHODS First, we conducted hepatic gene expression analysis in obese patients undergoing SGx, with the results showing increased expression of FGF19 in obese patients' livers. Next, we used wild-type and intestine-specific Fgf15 knockout mice (Fgf15ile-/-) to determine the effects of FGF15 deficiency on improving the metabolic effects. RESULTS SGx improved metabolic endpoints in both genotypes, evidenced by decreased obesity, improved glucose tolerance, and reduced MASLD progression. However, Fgf15ile-/- mice showed better improvement compared to wild-type mice after SGx, suggesting that other mediators than FGF15 are also responsible for the beneficial effects of FGF15 deficiency. Further gene expression analysis in brown adipose tissue suggests increased thermogenesis. CONCLUSIONS FGF15 deficiency, the larger BA pool and higher levels of secondary BAs may increase energy expenditure in extrahepatic tissues, which may be responsible for improved metabolic functions following SGx.
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Affiliation(s)
- Monica D. Chow
- Department of Surgery, Division of Pediatric Surgery, Rutgers Robert Wood Johnson Medical Center School, New Brunswick, New Jersey, USA
| | - Katherine Otersen
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Andrew Wassef
- Department of Pharmaceutics, Ernest Mario School of Pharmacy-Rutgers University, Piscataway, New Jersey, USA
- Center of Excellence for Pharmaceutical Translational Research and Education, Rutgers University, Piscataway, New Jersey, USA
- Center of Excellence for Metabolic and Bariatric Surgery, Robert Wood Johnson Barnabas University Hospital, New Brunswick, New Jersey, USA
- Advanced Surgical & Bariatrics of NJ, Somerset, New Jersey, USA
| | - Bo Kong
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Sowmya Yamarthy
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Daniel Rizzolo
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Ill Yang
- Environmental and Occupational Health Science Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Brian Buckley
- Environmental and Occupational Health Science Institute, Rutgers University, Piscataway, New Jersey, USA
| | - Alexander Lu
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Naomi Crook
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Matthew Lee
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Judy Gao
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Sareena Naganand
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Mary F. Stofan
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Laura Armstrong
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Justin Schumacher
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Rulaiha Taylor
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Zakiyah Henry
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Veronia Basaly
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Zhenning Yang
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
| | - Min Zhang
- Children’s Liver Disease Center, 302 Military Hospital, Beijing, China
| | - Mingxing Huang
- Department of Infectious Diseases, the Fifth Affiliated Hospital of Sun Yat-Sen University (SYSU), Zhuhai, Guangdong, China
| | - Leonid Kagan
- Department of Pharmaceutics, Ernest Mario School of Pharmacy-Rutgers University, Piscataway, New Jersey, USA
- Center of Excellence for Pharmaceutical Translational Research and Education, Rutgers University, Piscataway, New Jersey, USA
| | - Luigi Brunetti
- Department of Pharmaceutics, Ernest Mario School of Pharmacy-Rutgers University, Piscataway, New Jersey, USA
- Center of Excellence for Pharmaceutical Translational Research and Education, Rutgers University, Piscataway, New Jersey, USA
| | - Ragui Sadek
- Center of Excellence for Metabolic and Bariatric Surgery, Robert Wood Johnson Barnabas University Hospital, New Brunswick, New Jersey, USA
- Advanced Surgical & Bariatrics of NJ, Somerset, New Jersey, USA
| | - Yi-Horng Lee
- Department of Surgery, Division of Pediatric Surgery, Rutgers Robert Wood Johnson Medical Center School, New Brunswick, New Jersey, USA
| | - Grace L. Guo
- Department of Pharmacology and Toxicology, Rutgers University, Piscataway, New Jersey, USA
- Environmental and Occupational Health Science Institute, Rutgers University, Piscataway, New Jersey, USA
- Department of Veterans Affairs New Jersey Health Care System, East Orange, New Jersey, USA
- Rutgers Center for Lipid Research, New Brunswick, New Jersey, USA
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Wei M, Cao WB, Zhao RD, Sun DP, Liang YZ, Huang YD, Cheng ZW, Ouyang J, Yang WS, Yu WB. Fibroblast growth factor 15, induced by elevated bile acids, mediates the improvement of hepatic glucose metabolism after sleeve gastrectomy. World J Gastroenterol 2023; 29:3280-3291. [PMID: 37377582 PMCID: PMC10292143 DOI: 10.3748/wjg.v29.i21.3280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/31/2023] [Accepted: 05/08/2023] [Indexed: 06/01/2023] Open
Abstract
BACKGROUND Fibroblast growth factor (FGF) 15/19, which is expressed in and secreted from the distal ileum, can regulate hepatic glucose metabolism in an endocrine manner. The levels of both bile acids (BAs) and FGF15/19 are elevated after bariatric surgery. However, it is unclear whether the increase in FGF15/19 is induced by BAs. Moreover, it remains to be understood whether FGF15/19 elevations contribute to improvements in hepatic glucose metabolism after bariatric surgery.
AIM To investigate the mechanism of improvement of hepatic glucose metabolism by elevated BAs after sleeve gastrectomy (SG).
METHODS By calculating and comparing the changes of body weight after SG with SHAM group, we examined the weight-loss effect of SG. The oral glucose tolerance test (OGTT) test and area under the curve of OGTT curves were used to assess the anti-diabetic effects of SG. By detecting the glycogen content, expression and activity of glycogen synthase as well as the glucose-6-phosphatase (G6Pase) and phosphoenolpyruvate carboxykinase (Pepck), we evaluated the hepatic glycogen content and gluconeogenesis activity. We examined the levels of total BA (TBA) together with the farnesoid X receptor (FXR)-agonistic BA subspecies in systemic serum and portal vein at week 12 post-surgery. Then the histological expression of ileal FXR and FGF15 and hepatic FGF receptor 4 (FGFR4) with its corresponding signal pathways involved in glucose metabolism were detected.
RESULTS After surgery, food intake and body weight gain of SG group was decreased compare with the SHAM group. The hepatic glycogen content and glycogen synthase activity was significantly stimulated after SG, while the expression of the key enzyme for hepatic gluconeogenesis: G6Pase and Pepck, were depressed. TBA levels in serum and portal vein were both elevated after SG, the FXR-agonistic BA subspecies: Chenodeoxycholic acid (CDCA), lithocholic acid (LCA) in serum and CDCA, DCA, LCA in portal vein were all higher in SG group than that in SHAM group. Consequently, the ileal expression of FXR and FGF15 were also advanced in SG group. Moreover, the hepatic expression of FGFR4 was stimulated in SG-operated rats. As a result, the activity of its corresponding pathway for glycogen synthesis: FGFR4-Ras-extracellular signal regulated kinase pathway was stimulated, while the corresponding pathway for hepatic gluconeogenesis: FGFR4- cAMP regulatory element-binding protein- peroxisome proliferator-activated receptor γ coactivator-1α pathway was suppressed.
CONCLUSION Elevated BAs after SG induced FGF15 expression in distal ileum by activating their receptor FXR. Furthermore, the promoted FGF15 partly mediated the improving effects on hepatic glucose metabolism of SG.
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Affiliation(s)
- Meng Wei
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Wei-Bo Cao
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Ru-Dong Zhao
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Dan-Ping Sun
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Yi-Ze Liang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Ya-Di Huang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Ze-Wei Cheng
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Jun Ouyang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Wen-Shuo Yang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Wen-Bin Yu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
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Regulation of Pancreatic TXNIP-Insulin Expression Levels after Bariatric Surgery Using Diabetic Rodent Model. BIOMED RESEARCH INTERNATIONAL 2023; 2023:9563359. [PMID: 36733403 PMCID: PMC9889143 DOI: 10.1155/2023/9563359] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/27/2022] [Accepted: 12/31/2022] [Indexed: 01/26/2023]
Abstract
Purpose The purpose of this study was to investigate the effect of bariatric surgery on pancreatic thioredoxin-interacting protein (TXNIP) and insulin expression levels. The research question is does bariatric surgery induce changes in the pancreatic TXNIP level, given that TXNIP has been proposed as a key glucose control factor? Methods Using nondiabetic and diabetic rats, we investigated whether our streptozotocin-induced diabetic rat models exhibited changes in pancreatic TXNIP regulation. Following this confirmation, we randomly divided the diabetic rats into the following three groups: the gastric bypass group (n = 16), pair-fed group (n = 10), and sham group (n = 10). Preoperatively and 3 weeks postoperatively, all the rats underwent an oral glucose tolerance test, insulin tolerance test, and blood sampling procedures for hormonal analysis. Results The TXNIP messenger ribonucleic acid (mRNA) and protein expression levels were significantly lower in the gastric bypass group than in the other groups. Regarding the gastric bypass group, the pancreatic mRNA expression levels of microRNA-204 (miR-204) and MafA were significantly lower and higher, respectively, than in the other groups. Furthermore, the levels of pancreatic insulin expression at the mRNA and protein levels were also significantly higher in the gastric bypass group than in the other groups. Conclusion Bariatric surgery significantly improved glucose control and regulated the pancreatic insulin production pathways of TXNIP, miR-204, and MafA. The regulation of TXNIP, miR-204, and MafA might play an important role in the mechanism of diabetes remission following bariatric surgery.
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Han HF, Liu SZ, Zhang X, Wei M, Huang X, Yu WB. Duodenal-jejunal bypass increases intraduodenal bile acids and upregulates duodenal SIRT1 expression in high-fat diet and streptozotocin-induced diabetic rats. World J Gastroenterol 2022; 28:4338-4350. [PMID: 36159018 PMCID: PMC9453763 DOI: 10.3748/wjg.v28.i31.4338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/28/2022] [Accepted: 07/25/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The mechanisms underlying diabetes remission after duodenal-jejunal bypass (DJB) remain elusive. In DJB surgery, the duodenum is excluded. However, the duodenum has emerged as an important regulator of glucose homeostasis, and elevated duodenal SIRT1 leads to improved hepatic insulin sensitivity. After DJB, bile acids (BAs) in the duodenum are not mixed and diluted by the ingested food. And activation of BA receptors promotes SIRT1 expression in many tissues. We hypothesized that BA-mediated upregulation of SIRT1 may contribute to diabetic control after DJB.
AIM To investigate the surgical effects of DJB on duodenal SIRT1 expression and uncover the potential crosslinks between BAs and SIRT1.
METHODS Twenty diabetic rats were randomly allocated to the sham (n = 10) and DJB (n = 10) groups. Body weight, food intake, fasting blood glucose (FBG), serum and intraduodenal total BA (TBA) levels were measured accordingly. Oral glucose tolerance test (OGTT) and intraperitoneal pyruvate tolerance test (ipPTT) were performed to evaluate the effects of surgeries on systemic glucose disposal and hepatic gluconeogenesis. The key genes of BA signaling pathway in the duodenal mucosa, including farnesoid X receptor (FXR), small heterodimer partner (SHP), and Takeda G-protein-coupled receptor 5 (TGR5) were evaluated by real-time quantitative polymerase chain reaction 8 wk postoperatively. The duodenal SIRT1, AMPK, and phosphorylated AMPK (p-AMPK) levels were evaluated by western blotting. Rat small intestine epithelial IEC-6 cells were treated with GW4064 and INT-777 to verify the effects of BAs on SIRT1 expression in enterocytes.
RESULTS The DJB group exhibited body weight and food intake comparable to those of the sham group at all postoperative time points. The FBG level and area under the curve for the OGTT and ipPTT were significantly lower in the DJB group. The DJB group exhibited higher fasting and postprandial serum TBA levels than the sham group at both 2 and 8 wk postoperatively. At 8 wk after surgery, the DJB group showed higher intraluminal TBA concentration, upregulated mRNA expression of FXR and SHP, and elevated protein expression of SIRT1 and p-AMPK in the descending and horizontal segments of the duodenum. Activation of FXR and TGR5 receptors by GW4064 and INT-777 increased the mRNA and protein expression of SIRT1 and promoted the phosphorylation of AMPK in IEC-6 cells.
CONCLUSION DJB elevates intraduodenal BA levels and activates the duodenal BA signaling pathway, which may upregulate duodenal SIRT1 and further contribute to improved glucose homeostasis after DJB.
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Affiliation(s)
- Hai-Feng Han
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Shao-Zhuang Liu
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Xiang Zhang
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Meng Wei
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Xin Huang
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
| | - Wen-Bin Yu
- Department of General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong Province, China
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Chen F, Liu B. Sleeve gastrectomy suppresses hepatic de novo cholesterogenesis and improves hepatic cholesterol accumulation in obese rats with type 2 diabetes mellitus. Nutrition 2022; 94:111531. [PMID: 34952362 DOI: 10.1016/j.nut.2021.111531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 10/17/2021] [Accepted: 10/23/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVES Cholesterol metabolic disturbance increases the risk of various acquired diseases and affects public health. An apparent correlation between hypercholesterolemia and type 2 diabetes mellitus (T2DM) was confirmed recently. Bariatric surgery can induce durable and sufficient loss of body weight and T2DM remission. A previous study illustrated a cholesterol-lowering effect of sleeve gastrectomy (SG), but the intrinsic mechanism is still elusive. The present study aimed to investigate the effects of SG on hypercholesterolemia and hepatic cholesterol accumulation in a T2DM rat model. METHODS Obese rats with T2DM were randomly subjected to sham operation, sham operation combined with food restriction, or SG. Body weight, food intake, blood glucose, body composition, and cholesterol level were measured at the indicated time points. Subsequently, hepatic cholesterol content and both protein and transcriptional levels of sterol regulatory element-binding protein 2, 3-hydroxy-3-methylglutaryl-coenzyme A reductase, and low-density lipoprotein receptor were measured at 2 and 4 wk postoperatively. RESULTS SG rapidly reduced blood glucose independent of loss of body weight and food restriction. Rats that underwent SG exhibited lower total cholesterol and free cholesterol in both serum and liver. The cholesterol-lowering effect was independent of loss of body weight and food restriction at just 2 wk postoperatively. Protein and mRNA expression of sterol regulatory element-binding protein 2, 3-hydroxy-3-methylglutaryl-coenzyme A reductase, and low-density lipoprotein receptor were inhibited at 2 wk postoperatively and recovered by 4 wk after SG. CONCLUSION SG alleviated hypercholesterolemia and hepatic cholesterol accumulation partially by inhibiting hepatic de novo cholesterogenesis.
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Affiliation(s)
- Fu Chen
- Department of General Surgery, Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bingyang Liu
- Department of Endocrinology, Shengjing Hospital of China Medical University, Shenyang, China.
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Tu J, Wang Y, Jin L, Huang W. Bile acids, gut microbiota and metabolic surgery. Front Endocrinol (Lausanne) 2022; 13:929530. [PMID: 36072923 PMCID: PMC9441571 DOI: 10.3389/fendo.2022.929530] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/02/2022] [Indexed: 11/13/2022] Open
Abstract
Metabolic surgery, or bariatric surgery, is currently the most effective approach for treating obesity and its complications. Vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass (RYGB) are the top two types of commonly performed metabolic surgery now. The precise mechanisms of how the surgeries work are still unclear, therefore much research has been conducted in this area. Gut hormones such as GLP-1 and PYY have been studied extensively in the context of metabolic surgery because they both participate in satiety and glucose homeostasis. Bile acids, whose functions cover intestinal lipid absorption and various aspects of metabolic regulation via the action of FXR, TGR5, and other bile acid receptors, have also been actively investigated as potential mediators of metabolic surgery. Additionally, gut microbiota and their metabolites have also been studied because they can affect metabolic health. The current review summarizes and compares the recent scientific progress made on identifying the mechanisms of RYGB and VSG. One of the long-term goals of metabolic/bariatric surgery research is to develop new pharmacotherapeutic options for the treatment of obesity and diabetes. Because obesity is a growing health concern worldwide, there is a dire need in developing novel non-invasive treatment options.
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Affiliation(s)
- Jui Tu
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, United States
- Irell & Manella Graduate School of Biomedical Science, City of Hope National Medical Center, Duarte, CA, United States
| | - Yangmeng Wang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, United States
| | - Lihua Jin
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, United States
| | - Wendong Huang
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute, City of Hope National Medical Center, Duarte, CA, United States
- Irell & Manella Graduate School of Biomedical Science, City of Hope National Medical Center, Duarte, CA, United States
- *Correspondence: Wendong Huang,
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Zhang Q, Chang X, Wang X, Zhan H, Gao Q, Yang M, Liu H, Li S, Sun Y. A metabolomic-based study on disturbance of bile acids metabolism induced by intratracheal instillation of nickel oxide nanoparticles in rats. Toxicol Res (Camb) 2021; 10:579-591. [PMID: 34141172 DOI: 10.1093/toxres/tfab039] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 03/11/2021] [Accepted: 03/26/2021] [Indexed: 12/11/2022] Open
Abstract
Nickel oxide nanoparticles (Nano NiO) evoke hepatotoxicity, while whether it affects the hepatic metabolism remains unclear. The aim of this study was to explore the differential metabolites and their metabolic pathways in rat serum and to further verify the potential mechanism of bile acids' (BAs) metabolism dysregulation after Nano NiO exposure. Sixteen male Wistar rats were intratracheally instilled with Nano NiO (0.24 mg/kg body weight) twice a week for 9 weeks. Liquid chromatography/mass spectrometry was applied to filter the differentially expressed metabolites in rat serum. Western blot was employed to detect the protein contents. Twenty-one differential metabolites that associated with BAs, lipid and phospholipid metabolism pathways were identified in rat serum after Nano NiO exposure. Decreased cholic acid and deoxycholic acid implied that the BAs metabolism was disturbed. The nickel content increased in liver after Nano NiO exposure. The protein expression of cholesterol 7α-hydroxylase (CYP7A1) was down-regulated, and the bile salt export pump was up-regulated after Nano NiO administration in rat liver. Moreover, dehydroepiandrosterone sulphotransferase (SULT2A1) and cytochrome P450 (CYP) 3A4 were elevated in the exposure group. In conclusion, Nano NiO might trigger the disturbances of BAs, lipid and phospholipid metabolism pathways in rats. The diminished serum BAs induced by Nano NiO might be related to the down-regulation of synthetase and to the overexpression of transmembrane protein and detoxification enzymes in BAs metabolism.
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Affiliation(s)
- Qiong Zhang
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Xuhong Chang
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Xiaoxia Wang
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Haibing Zhan
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Qing Gao
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Mengmeng Yang
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Han Liu
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
| | - Sheng Li
- The First People's Hospital of Lanzhou City, Lanzhou 730050, China
| | - Yingbiao Sun
- Department of Toxicology, School of Public Health, Lanzhou University, 199 Donggang West Road, Chengguan District, Lanzhou 730000, China
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Xiong Y, Zhu W, Xu Q, Ruze R, Yan Z, Li J, Hu S, Zhong M, Cheng Y, Zhang G. Sleeve Gastrectomy Attenuates Diabetic Nephropathy by Upregulating Nephrin Expressions in Diabetic Obese Rats. Obes Surg 2021; 30:2893-2904. [PMID: 32399849 DOI: 10.1007/s11695-020-04611-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE Diabetic nephropathy (DN) is the leading cause of end-stage renal disease, and sleeve gastrectomy (SG) is considered to be an effective strategy to improve pre-existing DN. However, the mechanism remains unknown. MATERIALS AND METHODS Animal model of DN was induced by high-fat diet (HFD) and streptozotocin (STZ). SG or sham surgery was performed and rats were sacrificed at 4, 8, and 12 weeks after surgery. The basic parameters (blood glucose, body weight, kidney weight), indicators of renal function including serum creatinine (Scr), blood urea nitrogen (BUN), urine microalbumin, urine creatinine (Ucr), microalbumin creatinine ratio (UACR), ultrastructural changes of glomerulus, and the expression of nephrin gene and protein in glomerular podocytes were compared among groups. RESULTS Blood glucose and body weight of SG rats were significantly lower than those of the sham-operated rats, and renal function of SG groups were also significantly improved within the postoperative period of 12 weeks. The results of periodic acid-Schiff staining (PAS) and transmission electron microscopy (TEM) showed that glomerular hypertrophy and accumulation of extracellular matrix proteins were significantly alleviated after SG, and the thickness of basement membrane and the fusion or effacement of foot processes were also significantly improved. The mRNA and protein expression of nephrin in SG groups was significantly higher than that in the sham group. CONCLUSION These results suggest that SG attenuates DN by upregulating the expression of nephrin and improving the ultrastructure of glomerular filtration membrane. This study indicates that SG can be used as an available therapeutic intervention for DN.
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Affiliation(s)
- Yacheng Xiong
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, Shandong Province, People's Republic of China
| | - Wei Zhu
- Shandong Medical College, Jucai 6# Road, Linyi, 276000, Shandong Province, People's Republic of China
| | - Qian Xu
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, Shandong Province, People's Republic of China
| | - Rexiati Ruze
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, 250014, Shandong Province, People's Republic of China
| | - Zhibo Yan
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, 250012, Shandong Province, People's Republic of China
| | - Jianwen Li
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Sanyuan Hu
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, 16766#, Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Mingwei Zhong
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, 16766#, Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Yugang Cheng
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, 16766#, Jingshi Road, Jinan, 250014, Shandong Province, China
| | - Guangyong Zhang
- Department of General Surgery, The First Affiliated Hospital of Shandong First Medical University, 16766#, Jingshi Road, Jinan, 250014, Shandong Province, China.
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He Q, Mu Z, Shrestha A, Wang C, Wang S, Tang H, Li Y, Song J, Ji P, Huang Y, Chen T. Development of a rat model for type 2 diabetes mellitus peri-implantitis: A preliminary study. Oral Dis 2021; 28:1936-1946. [PMID: 33715257 DOI: 10.1111/odi.13845] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 02/12/2021] [Accepted: 03/09/2021] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To develop an in vivo model to simulate the complex internal environment of diabetic peri-implantitis (T2DM-PI) model for a better understanding of peri-implantitis in type 2 diabetic patients. MATERIALS AND METHODS Maxillary first molars were extracted in Sprague-Dawley (SD) rats, and customized cone-shaped titanium implants were installed in the extraction sites. Thereafter, implants were uncovered and customized abutments were screwed into implants. A high-fat diet and a low-dose injection of streptozotocin were utilized to induce T2DM. Finally, LPS was locally injected in implant sulcus to induce peri-implantitis. RESULTS In the present study, T2DM-PI model has been successfully established. Imaging analysis revealed that abundant inflammatory cells infiltrated in the soft tissue in T2DM-PI group with concomitant excessive secretion of inflammatory cytokines. Moreover, higher expression of MMP and increased number of osteoclasts led to collagen disintegration and bone resorption in T2DM-PI group. CONCLUSIONS These results describe a novel rat model which stimulate T2DM-PI in vivo, characterized by overwhelming inflammatory response and bone resorption. This model has a potential to be used for investigation of initiation, progression and interventional therapy of T2DM-PI.
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Affiliation(s)
- Qingqing He
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Zhixiang Mu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China.,Department of Periodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Annie Shrestha
- Faculty of Dentistry, University of Toronto, Toronto, ON, Canada
| | - Chao Wang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Si Wang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Han Tang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yihan Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Jinlin Song
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Yuanding Huang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
| | - Tao Chen
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, China
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10
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Yan P, Wan Q, Zhang Z, Tang Q, Wu Y, Xu Y, Miao Y, Zhao H, Liu R. Decreased Physiological Serum Total Bile Acid Concentrations in Patients with Type 2 Diabetic Peripheral Neuropathy. Diabetes Metab Syndr Obes 2021; 14:2883-2892. [PMID: 34234486 PMCID: PMC8254093 DOI: 10.2147/dmso.s313488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/17/2021] [Indexed: 04/11/2023] Open
Abstract
PURPOSE Bile acids, amphipathic cholesterol metabolites, have been reported to have cytoprotective and neuroprotective effects in humans and animal models. The relationship of physiological serum total bile acid (TBA) levels with diabetic peripheral neuropathy (DPN), however, has not been determined. The purpose of this study was to investigate the relationship between physiological serum TBA and DPN. PATIENTS AND METHODS In total, 856 patients with type 2 diabetes mellitus (T2DM) aged 20-89 years were enrolled in this cross-sectional study. Serum TBA was measured, and its relationship with DPN and other parameters was analyzed. RESULTS T2DM patients with DPN had significantly lower serum TBA compared with those without (P<0.01). Serum TBA was negatively associated with glycated hemoglobin A1C, plateletcrit, fibrinogen, urine albumin-to-creatinine ratio, vibration perception thresholds, and prevalence of DPN, peripheral arterial disease, and diabetic foot ulceration after adjustment for age, sex, and body mass index (P<0.01 or P<0.05). A graded association with prevalence of DPN and increase in serum TBA quartiles was observed (P for trend <0.01), and there was an 48.2% decreased risk of DPN in the highest quartile of serum TBA versus the lowest quartile (95% CI 0.299-0.617; P=0.000) after multivariate adjustment. Receiver-operating characteristic analysis revealed that the optimal cutoff point of serum TBA to indicate DPN was 2.85 μmol/L (sensitivity 77.6% and specificity 45.6%). CONCLUSION These findings suggest that lower physiological serum TBA level may be associated with the prevalence of DPN in T2DM patients and may be a potential biomarker for DPN.
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Affiliation(s)
- Pijun Yan
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
- Correspondence: Pijun Yan Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of ChinaTel/Fax +86-830-3165361 Email
| | - Qin Wan
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Zhihong Zhang
- Department of General Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Qian Tang
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Yuru Wu
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Yong Xu
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Ying Miao
- Department of Endocrinology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Huan Zhao
- Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
| | - Ran Liu
- Southwest Medical University, Luzhou, Sichuan, 646000, People’s Republic of China
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11
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Xu K, Ma J, Liu Z, Wang X, Yan S, Liu Z, Sun F, Wang K. Effect of Sleeve Gastrectomy on Bone Metabolism and Serum 5-Hydroxytryptamine in Obese Rats. Med Sci Monit 2020; 26:e924097. [PMID: 32324718 PMCID: PMC7193245 DOI: 10.12659/msm.924097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Studies have shown that bariatric surgery, such as sleeve gastrectomy (SG), has an adverse effect on bone, including decreased bone mineral density (BMD) and bone metabolism. Peripheral 5-hydroxytryptamine (5-HT) has an adverse regulatory effect on bone formation. Here, we assessed changes in bone metabolism and whether 5-HT is involved in the effect of SG on bone metabolism. MATERIAL AND METHODS A rat model of obesity was established using Wistar rats. After successful modeling, rats were randomly assigned to 2 groups - the SG group and the Sham group - with 10 rats in each group. We then performed sleeve gastrectomy or sham operation. Bone metabolic markers and BMD of rats were measured at 2 and 16 weeks after the operation and the level of 5-HT in serum was determined. Rats were killed at 16 weeks after the operation, and bones of the hind limbs were harvested to measure 5-HT by immunofluorescence. RESULTS BMD was decreased and bone metabolism demonstrated a trend of bone destruction in the rats after SG. A significantly increasing trend in the level of serum 5-HT was found, and bone immunofluorescence showed increased expression of 5-HT. CONCLUSIONS BMD was decrease and bone metabolism demonstrated a trend of bone destruction after SG. SG can affect the level of 5-HT in serum or bone tissue and the 5-HT may be involved in the process through which SG affects bone metabolism.
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Affiliation(s)
- Kai Xu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland).,Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland)
| | - Junxing Ma
- Gastrointestinal Surgery, Feicheng Hospital Affiliated to Shandong First Medical University, Feicheng People's Hospital, Feicheng, Shandong, China (mainland)
| | - Zhi Liu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Xiaoyang Wang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
| | - Shaohua Yan
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland).,Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland)
| | - Zitian Liu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland).,Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland)
| | - Fuyun Sun
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland).,Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China (mainland)
| | - Kexin Wang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, China (mainland)
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12
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Li K, Zou J, Li S, Guo J, Shi W, Wang B, Han X, Zhang H, Zhang P, Miao Z, Li Y. Farnesoid X receptor contributes to body weight-independent improvements in glycemic control after Roux-en-Y gastric bypass surgery in diet-induced obese mice. Mol Metab 2020; 37:100980. [PMID: 32305491 PMCID: PMC7182762 DOI: 10.1016/j.molmet.2020.100980] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 03/12/2020] [Accepted: 03/12/2020] [Indexed: 02/08/2023] Open
Abstract
Objective Roux-en-Y gastric bypass surgery (RYGB) can achieve long-term remission of type 2 diabetes. However, the specific molecular mechanism through which this occurs has remained largely elusive. Bile acid signaling through the nuclear hormone receptor farnesoid X receptor (FXR) exerts beneficial effects after sleeve gastrectomy (VSG), which has similar effects to RYGB. Therefore, we investigated whether FXR signaling is necessary to mediate glycemic control after RYGB. Methods RYGB or sham surgery was performed in high-fat diet-induced obese FXR−/− (knockout) and FXR+/+ (wild type) littermates. Sham-operated mice were fed ad libitum (S-AL) or by weight matching (S-WM) to RYGB mice via caloric restriction. Body weight, body composition, food intake, energy expenditure, glucose tolerance tests, insulin tolerance tests, and homeostatic model assessment of insulin resistance were performed. Results RYGB surgery decreases body weight and fat mass in WT and FXR-KO mice. RYGB surgery has similar effects on food intake and energy expenditure independent of genotype. In addition, body weight-independent improvements in glucose control were attenuated in FXR −/− relative to FXR +/+ mice after RYGB. Furthermore, pharmacologic blockade of the glucagon-like peptide-1 receptor (GLP-1R) blunts the glucoregulatory effects of RYGB in FXR +/+ but not in FXR −/− mice at 4 weeks after surgery. Conclusions These results suggest that FXR signaling is not required for the weight loss up to 16 weeks after RYGB. Although most of the improvements in glucose homeostasis are secondary to RYGB-induced weight loss in wild type mice, FXR signaling contributes to glycemic control after RYGB in a body weight-independent manner, which might be mediated by an FXR-GLP-1 axis during the early postoperative period. The reduction in body weight after RYGB is independent of FXR, which is mainly due to a decrease in net energy intake. RYGB prevents the weight loss-induced decrease observed in nonsurgical weight-matched mice in both genotypes. FXR signaling contributes to glycemic control after RYGB in a body weight-independent manner. The early body weight-independent improvements in glucose homeostasis after RYGB might be mediated by an FXR-GLP-1 axis.
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Affiliation(s)
- Kun Li
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, PR China
| | - Jianan Zou
- Department of Nephrology, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, PR China
| | - Song Li
- School of Basic Medicine, Shandong First Medical University, Tai'an, 271000, PR China
| | - Jing Guo
- Discipline Planning Department, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, PR China
| | - Wentao Shi
- Clinical Research Center, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, PR China
| | - Bing Wang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, PR China
| | - Xiaodong Han
- Department of Metabolic & Bariatric Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, PR China
| | - Hongwei Zhang
- Department of Metabolic & Bariatric Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, PR China
| | - Pin Zhang
- Department of Metabolic & Bariatric Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, 200233, PR China
| | - Zengmin Miao
- School of Life Sciences, Shandong First Medical University, Tai'an, 271000, PR China.
| | - Yousheng Li
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, PR China.
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13
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Chen F, Zhou Y, Wu Z, Li Y, Zhou W, Wang Y. Integrated Analysis of Key Genes and Pathways Involved in Nonalcoholic Steatohepatitis Improvement After Roux-en-Y Gastric Bypass Surgery. Front Endocrinol (Lausanne) 2020; 11:611213. [PMID: 33603714 PMCID: PMC7884850 DOI: 10.3389/fendo.2020.611213] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/14/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND As the incidence of nonalcoholic fatty liver disease (NAFLD) increases globally, nonalcoholic steatohepatitis (NASH) has become the second common cause of liver transplantation for liver diseases. Recent evidence shows that Roux-en-Y gastric bypass (RYGB) surgery obviously alleviates NASH. However, the mechanism underlying RYGB induced NASH improvement is still elusive. METHODS We obtained datasets, including hepatic gene expression data and histologic NASH status, at baseline and 1 year after RYGB surgery. Differentially expressed genes (DEGs) were identified comparing gene expression before and after RYGB surgery in each dataset. Common DEGs were obtained between both datasets and further subjected to functional and pathway enrichment analysis. Protein-protein interaction (PPI) network was constructed, and key modules and hub genes were also identified. RESULTS In the present study, GSE106737 and GSE83452 datasets were included. One hundred thirty common DEGs (29 up-regulated and 101 down-regulated) were identified between GSE106737 and GSE83452 datasets. KEGG analysis showed that mineral absorption, IL-17 signaling pathway, osteoclast differentiation, and TNF signaling pathway were significantly enriched. Based on the PPI network, IGF1, JUN, FOS, LDLR, TYROBP, DUSP1, CXCR4, ATF3, CXCL2, EGR1, SAA1, CTSS, and PPARA were identified as hub genes, and three functional modules were also extracted. CONCLUSION This study identifies the global gene expression change in the liver of NASH patients before and after RYGB surgery in a bioinformatic method. Our findings will contribute to the understanding of molecular biological changes underlying NASH improvement after RYGB surgery.
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Affiliation(s)
- Fu Chen
- Department of General Surgery, Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Yong Zhou
- Department of General Surgery, Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Zhiyuan Wu
- Department of Colorectal and Hernia Minimally Invasive Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yunze Li
- Department of Colorectal and Hernia Minimally Invasive Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wenlong Zhou
- Department of General Surgery, The Third Hospital of Shenyang Medical College, Shenyang, China
| | - Yong Wang
- Department of General Surgery, Fourth Affiliated Hospital of China Medical University, Shenyang, China
- *Correspondence: Yong Wang,
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14
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Browning MG, Pessoa BM, Khoraki J, Campos GM. Changes in Bile Acid Metabolism, Transport, and Signaling as Central Drivers for Metabolic Improvements After Bariatric Surgery. Curr Obes Rep 2019; 8:175-184. [PMID: 30847736 DOI: 10.1007/s13679-019-00334-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW We review current evidence regarding changes in bile acid (BA) metabolism, transport, and signaling after bariatric surgery and how these might bolster fat mass loss and energy expenditure to promote improvements in type 2 diabetes (T2D) and nonalcoholic fatty liver disease (NAFLD). RECENT FINDINGS The two most common bariatric techniques, Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), increase the size and alter the composition of the circulating BA pool that may then impact energy metabolism through altered activities of BA targets in the many tissues perfused by systemic blood. Recent reports in human patients indicate that gene expression of the major BA target, the farnesoid X receptor (FXR), is increased in the liver but decreased in the small intestine after RYGB. In contrast, intestinal expression of the transmembrane G protein-coupled BA receptor (TGR5) is upregulated after surgery. Despite these apparent conflicting changes in receptor transcription, changes in BAs after both RYGB and VSG are associated with elevated postprandial systemic levels of fibroblast growth factor 19 (from FXR activation) and glucagon-like peptide 1 (from TGR5 activation). These signaling activities are presumed to support fat mass loss and related metabolic benefits of bariatric surgery, and this supposition is in agreement with findings from rodent models of RYGB and VSG. However, inter-species differences in BA physiology limit direct translation and mechanistic understanding of how changes in individual BA species contribute to post-operative improvements of T2D and NAFLD in humans. Thus, details of all these changes and their influences on BAs' biological actions are still under scrutiny. Changes in BA physiology and receptor activities after RYGB and VSG likely support weight loss and promote sustained metabolic improvements.
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Affiliation(s)
- Matthew G Browning
- Division of Bariatric and Gastrointestinal Surgery, Department of Surgery, Medical College of Virginia, Virginia Commonwealth University School of Medicine, 1200 East Broad Street, PO Box 980519, Richmond, VA, 23298, USA
| | - Bernardo M Pessoa
- Division of Bariatric and Gastrointestinal Surgery, Department of Surgery, Medical College of Virginia, Virginia Commonwealth University School of Medicine, 1200 East Broad Street, PO Box 980519, Richmond, VA, 23298, USA
| | - Jad Khoraki
- Division of Bariatric and Gastrointestinal Surgery, Department of Surgery, Medical College of Virginia, Virginia Commonwealth University School of Medicine, 1200 East Broad Street, PO Box 980519, Richmond, VA, 23298, USA
| | - Guilherme M Campos
- Division of Bariatric and Gastrointestinal Surgery, Department of Surgery, Medical College of Virginia, Virginia Commonwealth University School of Medicine, 1200 East Broad Street, PO Box 980519, Richmond, VA, 23298, USA.
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15
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Huang X, Wu D, Cheng Y, Zhang X, Liu T, Liu Q, Xia P, Zhang G, Hu S, Liu S. Restoration of myocardial glucose uptake with facilitated myocardial glucose transporter 4 translocation contributes to alleviation of diabetic cardiomyopathy in rats after duodenal-jejunal bypass. J Diabetes Investig 2019; 10:626-638. [PMID: 30290074 PMCID: PMC6497603 DOI: 10.1111/jdi.12948] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 09/10/2018] [Accepted: 10/01/2018] [Indexed: 12/17/2022] Open
Abstract
AIMS/INTRODUCTION Duodenal-jejunal bypass (DJB) surgery has been reported to effectively relieve diabetic cardiomyopathy (DCM). However, the specific mechanisms remain largely unknown. The present study was designed to determine the alterations of myocardial glucose uptake (MGU) after DJB and their effects on DCM. MATERIALS AND METHODS Duodenal-jejunal bypass and sham surgeries were carried out in diabetic rats induced by a high-fat diet and a low dose of streptozotocin, with chow-diet fed rats as controls. Bodyweight, food intake, glucose homeostasis and lipid profiles were measured at indicated time-points. Cardiac function was evaluated by transthoracic echocardiography and hemodynamic measurement. Cardiac remodeling was assessed by a series of morphometric analyses along with transmission electron microscopy. Positron-emission tomography with fluorine-18 labeled fluorodeoxyglucose was carried out to evaluate the MGU in vivo. Furthermore, myocardial glucose transporters (GLUT; GLUT1 and GLUT4), myocardial insulin signaling and GLUT-4 translocation-related proteins were investigated to elucidate the underlying mechanisms. RESULTS The DJB group showed restored systolic and diastolic cardiac function, along with significant remission in cardiac hypertrophy, cardiac fibrosis, lipid deposit and ultrastructural disorder independent of weight loss compared with the sham group. Furthermore, the DJB group showed upregulated myocardial insulin signaling, hyperphosphorylation of AKT substrate of 160 kDa (AS160) and TBC1D1, along with preserved soluble N-ethylmaleimide-sensitive factor attachment protein receptor proteins, facilitating the GLUT-4 translocation to the myocardial cell surface and restoration of MGU. CONCLUSIONS The present findings provide evidence that restoration of MGU is implicated in the alleviation of DCM after DJB through facilitating GLUT-4 translocation, suggesting a potential choice for treatment of human DCM if properly implemented.
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Affiliation(s)
- Xin Huang
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Dong Wu
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Yugang Cheng
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Xiang Zhang
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Teng Liu
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Qiaoran Liu
- State Key Laboratory of Diabetes and Obesity SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Pingtian Xia
- State Key Laboratory of Diabetes and Obesity SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Guangyong Zhang
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Sanyuan Hu
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
| | - Shaozhuang Liu
- Department of General SurgeryQilu Hospital of Shandong UniversityJinanChina
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16
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Liu Q, Wang S, Wei M, Huang X, Cheng Y, Shao Y, Xia P, Zhong M, Liu S, Zhang G, Hu S. Improved FGF21 Sensitivity and Restored FGF21 Signaling Pathway in High-Fat Diet/Streptozotocin-Induced Diabetic Rats After Duodenal-Jejunal Bypass and Sleeve Gastrectomy. Front Endocrinol (Lausanne) 2019; 10:566. [PMID: 31543863 PMCID: PMC6728857 DOI: 10.3389/fendo.2019.00566] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/02/2019] [Indexed: 12/30/2022] Open
Abstract
Objective: Bariatric surgery can profoundly improve glucose and lipid metabolism in diabetic rats. Fibroblast growth factor 21 (FGF21) is an important hormone with multiple metabolic beneficial effects. Alteration in serum FGF21 level after bariatric surgery has been reported with conflicting results. Here, we investigated the effect of bariatric surgeries on FGF21 expression and sensitivity. Methods: We performed duodenal-jejunal bypass (DJB), sleeve gastrectomy (SG) and sham surgery in diabetic rats induced by high fat diet and streptozotocin. Metabolic parameters, including body weight, food intake, glucose tolerance, and lipid profiles, were monitored. FGF21 levels in both serum and liver were measured after surgery. FGF21 signaling pathway including FGF receptor 1 (FGFR1), β-klotho (KLB), and phosphorylated extracellular signal-regulated kinase 1/2 (ERK1/2) was detected in the liver and white adipose tissue (WAT). We also determined FGF21 sensitivity post-operatively by acute recombinant human FGF21 injection. Oral glucose tolerance test (OGTT) and insulin tolerance test (ITT) were conducted immediately after FGF21 injection. Serum triglyceride (TG) and non-esterified fatty acid (NEFA) were measured and the mRNA levels of early growth response 1 (Egr1) and c-Fos in the liver and WAT were detected after FGF21 injection. Results: Improvements in glucose tolerance, insulin sensitivity, and lipid profiles were observed after bariatric surgeries along with ameliorated lipid metabolism in the liver and WAT. Serum and hepatic FGF21 levels decreased in both DJB and SG groups. FGFR1 and phosphorylated ERK1/2 levels increased in both DJB and SG groups 8 weeks after surgery. The expression of KLB was downregulated only in the WAT after DJB and SG. Significant alteration of OGTT and ITT were observed after acute FGF21 administration in DJB and SG groups. Serum TG and NEFA in DJB and SG groups also decreased after FGF21 administration. And increased mRNA levels of Egr1 and c-Fos were detected in the liver and WAT after DJB and SG surgeries. Conclusions: DJB and SG surgeries can downregulate hepatic expression of FGF21, restore FGF21 signaling pathway and improve FGF21 sensitivity in high-fat diet/streptozotocin-induced diabetic rats.
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Affiliation(s)
- Qiaoran Liu
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Shuo Wang
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Meng Wei
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Xin Huang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Yugang Cheng
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Yi Shao
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Pingtian Xia
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Mingwei Zhong
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Shaozhuang Liu
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Guangyong Zhang
- Department of General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Sanyuan Hu
- Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
- *Correspondence: Sanyuan Hu
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Huang X, Liu S, Wu D, Cheng Y, Han H, Wang K, Zhang G, Hu S. Facilitated Ca 2+ homeostasis and attenuated myocardial autophagy contribute to alleviation of diabetic cardiomyopathy after bariatric surgery. Am J Physiol Heart Circ Physiol 2018; 315:H1258-H1268. [PMID: 30141985 DOI: 10.1152/ajpheart.00274.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Bariatric surgery has been reported to relieve diabetic cardiomyopathy (DCM) effectively. However, the mechanisms remain largely unknown. To determine the effects of bariatric surgery on DCM via modulation of myocardial Ca2+ homeostasis and autophagy, sleeve gastrectomy (SG), duodenal-jejunal bypass (DJB), and sham surgeries were performed in diabetic rats induced by high-fat diet and a low dose of streptozotocin. Cardiac remodeling was assessed by a series of morphometric and histological analyses. Transthoracic echocardiography and hemodynamic measurements were performed to determine cardiac function. Ca2+ homeostasis was evaluated by measuring Ca2+ transients with fura-2 AM in isolated ventricular myocytes along with detection of the abundance of Ca2+ regulatory proteins in the myocardium. Myocardial autophagic flux was determined by expression of autophagy-related proteins in the absence and presence of chloroquine. Both SG and DJB surgery alleviated DCM morphologically and functionally. Ca2+ transients exhibited a significantly higher amplitude and faster decay after SG and DJB, which could be partially explained by increased expression of ryanodine receptor 2, sarco(endo)plasmic reticulum Ca2+-2ATPase, 12.6-kDa FK506-binding protein, and hyperphosphorylation of phospholamban. In addition, a lower level of light chain 3B and higher level of p62 were detected after both SG and DJB, which was not reversed by chloroquine treatment and associated with activated mammalian target of rapamycin and attenuated AMP-activated protein kinase signaling pathway. Collectively, these results provided evidence that bariatric surgery could alleviate DCM effectively, which may result, at least in part, from facilitated Ca2+ homeostasis and attenuated autophagy, suggesting a potential choice for treatment of DCM when properly implemented. NEW & NOTEWORTHY The present study is the first to investigate the modulation of myocardial Ca2+ homeostasis and autophagy after bariatric surgery and to examine its effects on diabetic cardiomyopathy. Bariatric surgery could facilitate myocardial Ca2+ homeostasis and attenuate myocardial autophagy, contributing to the alleviation of cardiomyopathy morphologically and functionally in a diabetic rat model.
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Affiliation(s)
- Xin Huang
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Shaozhuang Liu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China.,State Key Laboratory of Diabetes and Obesity Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Dong Wu
- State Key Laboratory of Diabetes and Obesity Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Yugang Cheng
- State Key Laboratory of Diabetes and Obesity Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Haifeng Han
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Kexin Wang
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Guangyong Zhang
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Sanyuan Hu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
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Thakare R, Alamoudi JA, Gautam N, Rodrigues AD, Alnouti Y. Species differences in bile acids I. Plasma and urine bile acid composition. J Appl Toxicol 2018; 38:1323-1335. [DOI: 10.1002/jat.3644] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/11/2018] [Accepted: 04/11/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Rhishikesh Thakare
- Department of Pharmaceutical Sciences, College of Pharmacy; University of Nebraska Medical Center; Omaha NE 68198 USA
| | - Jawaher Abdullah Alamoudi
- Department of Pharmaceutical Sciences, College of Pharmacy; University of Nebraska Medical Center; Omaha NE 68198 USA
| | - Nagsen Gautam
- Department of Pharmaceutical Sciences, College of Pharmacy; University of Nebraska Medical Center; Omaha NE 68198 USA
| | - A. David Rodrigues
- Pharmacokinetics, Pharmacodynamics & Metabolism, Medicine Design, Pfizer Inc.; Groton CT 06340 USA
| | - Yazen Alnouti
- Department of Pharmaceutical Sciences, College of Pharmacy; University of Nebraska Medical Center; Omaha NE 68198 USA
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Wei M, Shao Y, Liu QR, Wu QZ, Zhang X, Zhong MW, Liu SZ, Zhang GY, Hu SY. Bile acid profiles within the enterohepatic circulation in a diabetic rat model after bariatric surgeries. Am J Physiol Gastrointest Liver Physiol 2018; 314:G537-G546. [PMID: 29351394 DOI: 10.1152/ajpgi.00311.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Bile acids (BAs), which are synthesized in the liver and cycled in the enterohepatic circulation, have been recognized as signaling molecules by activating their receptors in the intestine and liver. Serum taurine-conjugated BAs have been shown to be elevated after bariatric surgeries although the postoperative BA profiles within the enterohepatic circulation have not been investigated. Clarification of these profiles could help explain the mechanisms by which bariatric surgery leads to BA profile alterations and subsequent metabolic effects. We performed duodenal-jejunal bypass (DJB), sleeve gastrectomy (SG), and sham procedures in an obese diabetic rat model induced by high-fat diet and streptozotocin. The weight loss and antidiabetic effects were evaluated postsurgery. BA profiles in the systemic serum and within the enterohepatic circulation were analyzed, together with the expression of related BA transporters and enzymes at week 12 after surgery. Compared with sham, SG induced sustained weight loss, and both DJB and SG significantly improved glucose tolerance and insulin sensitivity with enhanced glucagon-like peptide 1 secretion. Similar to changes in the serum, BAs, especially taurine-conjugated species, were also elevated in the enterohepatic circulation (bile and portal vein) after DJB and SG. In addition, the expression of key BA transporters and conjugational enzymes was elevated postoperatively, whereas the enzymes responsible for BA synthesis were decreased. In conclusion, DJB and SG elevated BA levels in the systemic serum and enterohepatic circulation, especially taurine-conjugated species, which likely indicates increased ileal reabsorption and hepatic conjugation rather than synthesis. NEW & NOTEWORTHY Bile acids (BAs) have been implicated as potential mediators of the weight-independent effects of bariatric surgery. For the first time, we discovered that duodenal-jejunal bypass and sleeve gastrectomy elevated BAs, particularly the taurine-conjugated species in the enterohepatic circulation, likely through the promotion of ileal reabsorption and hepatic conjugation rather than BA synthesis. These findings will improve our understanding of BA metabolism after bariatric surgery and their subsequent metabolic effects.
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Affiliation(s)
- Meng Wei
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Yi Shao
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Qiao-Ran Liu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Qun-Zheng Wu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Xiang Zhang
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Ming-Wei Zhong
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Shao-Zhuang Liu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - Guang-Yong Zhang
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
| | - San-Yuan Hu
- Department of General Surgery, Qilu Hospital of Shandong University , Jinan , People's Republic of China
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Wang M, Wu Q, Xie H, Shao Y, Zhong M, Zhang X, Liu S, He X, Hu S, Zhang G. Effects of Sleeve Gastrectomy on Serum 12α-Hydroxylated Bile Acids in a Diabetic Rat Model. Obes Surg 2018; 27:2912-2918. [PMID: 28508276 DOI: 10.1007/s11695-017-2714-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Diabetes mellitus is a prevalent disease that endangers human health. Bariatric surgery can effectively relieve insulin resistance with elevated serum bile acids (BAs). 12α-Hydroxylated BAs were previously reported to be associated with insulin resistance. The aim of this study was to analyze changes in 12α-hydroxylated BA composition and possible associated mechanisms in diabetic rats following sleeve gastrectomy (SG). METHODS SG and sham operations were performed in diabetic rats induced by high-fat diet feeding and streptozotocin. Body weight, food intake, oral glucose tolerance test (OGTT), insulin tolerance test (ITT), and serum BAs were analyzed at corresponding time points. Cholesterol 12α-hydroxylase (CYP8B1) and transcription factor V-Maf Avian Musculoaponeurotic Fibrosarcoma Oncogene Homolog G (MAFG) expression levels were assessed by RT-PCR and western blotting. RESULTS Compared with the SHAM group, the SG group displayed significant weight loss from 6 weeks postoperatively, accompanied by decreased food intake from 4 weeks after the operation. At 2 and 12 weeks postoperatively, the areas under the curve of OGTT and ITT were significantly decreased in the SG group. At 12 weeks post-operation, the SG group displayed elevated serum BAs, but the percentage of 12α-hydroxylated BAs was reduced. Furthermore, SG rats exhibited higher MAFG and lower CYP8B1 protein and mRNA levels in the liver (P < 0.05). CONCLUSION The percentage of 12α-hydroxylated bile acids was reduced after SG, which was relevant with the inhibition of CYP8B1 and overexpression of MAFG. These outcomes may play an important role in the improvement of insulin sensitivity following SG.
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Affiliation(s)
- Minggang Wang
- Department of Hernia and Abdominal Wall Surgery, Beijing Chao-Yang Hospital, Capital Medical University, 100043, Beijing, People's Republic of China
| | - Qunzheng Wu
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Haibin Xie
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Yi Shao
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Mingwei Zhong
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Xiang Zhang
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Shaozhuang Liu
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Xiao He
- Department of Cardiology, Affiliated Hospital of Taishan Medical University, Taian, 271000, Shandong, People's Republic of China
| | - Sanyuan Hu
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China
| | - Guangyong Zhang
- Department of General Surgery, Qilu Hospital of Shandong University, 107#, Wenhua Xi Road, Jinan, 250012, Shandong, People's Republic of China.
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Li L, Wang X, Bai L, Yu H, Huang Z, Huang A, Luo Y, Wang J. The Effects of Sleeve Gastrectomy on Glucose Metabolism and Glucagon-Like Peptide 1 in Goto-Kakizaki Rats. J Diabetes Res 2018; 2018:1082561. [PMID: 29670912 PMCID: PMC5835276 DOI: 10.1155/2018/1082561] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/13/2017] [Accepted: 10/25/2017] [Indexed: 12/17/2022] Open
Abstract
PURPOSE To investigate the effects of sleeve gastrectomy (SG) on glucose metabolism and changes in glucagon-like peptide 1 (GLP-1) in Goto-Kakizaki (GK) rats. METHODS GK rats were randomly assigned to one of three groups: SG, SG pair-fed plus sham surgery (PF-sham), and ad libitum-fed no surgery (control). Food intake, body weight, blood glucose, GLP-1 and insulin levels, and GLP-1 expression in the jejunum and ileum were compared. RESULTS The SG rats exhibited lower postoperative food intake, body weight, and fasting glucose than did the control rats (P < 0.05). SG significantly improved glucose and insulin tolerance (P < 0.05). Plasma GLP-1 levels were higher in SG rats than in control or PF-sham rats in the oral glucose tolerance test (OGTT) (P < 0.05). Blood glucose levels expressed as a percentage of baseline were higher in SG rats than in control rats after exendin (9-39) administration (P < 0.05). The levels of GLP-1 expression in the jejunum and ileum were higher in SG rats than in PF-sham and control rats (P < 0.05). CONCLUSIONS Improvement of glucose metabolism by SG was associated with increased GLP-1 secretion. SG contributes to an increase in plasma GLP-1 levels via increased GLP-1 expression in the mucosa of the jejunum and/or ileum.
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Affiliation(s)
- Laiyuan Li
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
| | - Xiaolin Wang
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
| | - Liangliang Bai
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
| | - Huichuan Yu
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
| | - Zenghong Huang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Department of Biochemistry and Molecular Medicine, University of California, Davis, Sacramento, CA, USA
| | - Anpei Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yanxin Luo
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
| | - Jianping Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Guangdong Institute of Gastroenterology, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Disease, Guangzhou, China
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22
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Lu ZX, Xu WJ, Wu YS, Li CY, Chen YT. Identification of Potential Therapeutic Targets in the Liver of Pioglitazone-Treated Type 2 Diabetes Sprague-Dawley Rats via Expression Profile Chip and iTRAQ Assay. J Diabetes Res 2018; 2018:8120847. [PMID: 29744368 PMCID: PMC5878868 DOI: 10.1155/2018/8120847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/14/2018] [Indexed: 11/18/2022] Open
Abstract
The aim of the present study was to identify key antidiabetic nodes in the livers of pioglitazone-treated type 2 diabetes mellitus Sprague-Dawley rats by transcriptomic and proteomic analysis. Rats were randomly divided into the control, the diabetes model, and the pioglitazone-treated groups. After treatment with pioglitazone for 11 weeks, the effects on fasting blood glucose, body weight, and blood biochemistry parameters were evaluated. Microarray and iTRAQ analysis were used to determine the differentially expressed genes/proteins in rat livers. 1.5-fold changes in gene expression and 1.2-fold changes in protein were set as the screening criteria. After treatment with pioglitazone for 11 weeks, fasting blood glucose in pioglitazone-treated rats was significantly lower than that in the model group. There was a tendency for pioglitazone to reduce TC, TG, TP, ALB, BUN, and HDL-c levels. Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene ontology (GO) were applied to analyze differentially expressed genes/proteins. Furthermore, Western blotting and RT-qPCR were used to validate the results of microarray and iTRAQ. In conclusion, Cyp7a1, Cp, and RT1-EC2 are differentially expressed genes/proteins since they showed a similar trend in rats in the model group and the pioglitazone-treated group.
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Affiliation(s)
- Zhong-Xia Lu
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Wen-Jun Xu
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yang-Sheng Wu
- College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Chang-Yu Li
- College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Yi-Tao Chen
- College of Life Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
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23
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Vettorazzi JF, Kurauti MA, Soares GM, Borck PC, Ferreira SM, Branco RCS, Michelone LDSL, Boschero AC, Junior JMC, Carneiro EM. Bile acid TUDCA improves insulin clearance by increasing the expression of insulin-degrading enzyme in the liver of obese mice. Sci Rep 2017; 7:14876. [PMID: 29093479 PMCID: PMC5665899 DOI: 10.1038/s41598-017-13974-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 10/03/2017] [Indexed: 02/06/2023] Open
Abstract
Disruption of insulin secretion and clearance both contribute to obesity-induced hyperinsulinemia, though reduced insulin clearance seems to be the main factor. The liver is the major site for insulin degradation, a process mainly coordinated by the insulin-degrading enzyme (IDE). The beneficial effects of taurine conjugated bile acid (TUDCA) on insulin secretion as well as insulin sensitivity have been recently described. However, the possible role of TUDCA in insulin clearance had not yet been explored. Here, we demonstrated that 15 days treatment with TUDCA reestablished plasma insulin to physiological concentrations in high fat diet (HFD) mice, a phenomenon associated with increased insulin clearance and liver IDE expression. TUDCA also increased IDE expression in human hepatic cell line HepG2. This effect was not observed in the presence of an inhibitor of the hepatic membrane bile acid receptor, S1PR2, nor when its downstream proteins were inhibited, including IR, PI3K and Akt. These results indicate that treatment with TUDCA may be helpful to counteract obesity-induced hyperinsulinemia through increasing insulin clearance, likely through enhanced liver IDE expression in a mechanism dependent on S1PR2-Insulin pathway activation.
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Affiliation(s)
- Jean Franciesco Vettorazzi
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Mirian Ayumi Kurauti
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Gabriela Moreira Soares
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Patricia Cristine Borck
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Sandra Mara Ferreira
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Renato Chaves Souto Branco
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Luciana de Souza Lima Michelone
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Antonio Carlos Boschero
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Jose Maria Costa Junior
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Everardo Magalhães Carneiro
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-970, Campinas, SP, Brazil.
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Sridharan GV, D'Alessandro M, Bale SS, Bhagat V, Gagnon H, Asara JM, Uygun K, Yarmush ML, Saeidi N. Multi-omic network-based interrogation of rat liver metabolism following gastric bypass surgery featuring SWATH proteomics. TECHNOLOGY 2017; 5:139-184. [PMID: 29780857 PMCID: PMC5956888 DOI: 10.1142/s233954781750008x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Morbidly obese patients often elect for Roux-en-Y gastric bypass (RYGB), a form of bariatric surgery that triggers a remarkable 30% reduction in excess body weight and reversal of insulin resistance for those who are type II diabetic. A more complete understanding of the underlying molecular mechanisms that drive the complex metabolic reprogramming post-RYGB could lead to innovative non-invasive therapeutics that mimic the beneficial effects of the surgery, namely weight loss, achievement of glycemic control, or reversal of non-alcoholic steatohepatitis (NASH). To facilitate these discoveries, we hereby demonstrate the first multi-omic interrogation of a rodent RYGB model to reveal tissue-specific pathway modules implicated in the control of body weight regulation and energy homeostasis. In this study, we focus on and evaluate liver metabolism three months following RYGB in rats using both SWATH proteomics, a burgeoning label free approach using high resolution mass spectrometry to quantify protein levels in biological samples, as well as MRM metabolomics. The SWATH analysis enabled the quantification of 1378 proteins in liver tissue extracts, of which we report the significant down-regulation of Thrsp and Acot13 in RYGB as putative targets of lipid metabolism for weight loss. Furthermore, we develop a computational graph-based metabolic network module detection algorithm for the discovery of non-canonical pathways, or sub-networks, enriched with significantly elevated or depleted metabolites and proteins in RYGB-treated rat livers. The analysis revealed a network connection between the depleted protein Baat and the depleted metabolite taurine, corroborating the clinical observation that taurine-conjugated bile acid levels are perturbed post-RYGB.
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Affiliation(s)
- Gautham Vivek Sridharan
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
| | - Matthew D'Alessandro
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
| | - Shyam Sundhar Bale
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
| | - Vicky Bhagat
- Warren Alpert Medical School of Brown University, 222 Richmond St., Providence, RI 02903, USA
| | - Hugo Gagnon
- Phenoswitch Bioscience, 3001 12e Avenue N, Sherbrooke, QC J1H 5N4, Canada
| | - John M Asara
- Beth Israel Deaconness Medical Center, 3 Blackfan Circle Rm 425, Boston, MA 02115, USA
| | - Korkut Uygun
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
| | - Martin L Yarmush
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
| | - Nima Saeidi
- Center for Engineering in Medicine, Harvard Medical School - Massachusetts General Hospital, 51 Blossom Street, Boston, MA 02114, USA
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Albaugh VL, Banan B, Ajouz H, Abumrad NN, Flynn CR. Bile acids and bariatric surgery. Mol Aspects Med 2017; 56:75-89. [PMID: 28390813 PMCID: PMC5603298 DOI: 10.1016/j.mam.2017.04.001] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/27/2017] [Accepted: 04/04/2017] [Indexed: 12/12/2022]
Abstract
Bariatric surgery, specifically Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), are the most effective and durable treatments for morbid obesity and potentially a viable treatment for type 2 diabetes (T2D). The resolution rate of T2D following these procedures is between 40 and 80% and far surpasses that achieved by medical management alone. The molecular basis for this improvement is not entirely understood, but has been attributed in part to the altered enterohepatic circulation of bile acids. In this review we highlight how bile acids potentially contribute to improved lipid and glucose homeostasis, insulin sensitivity and energy expenditure after these procedures. The impact of altered bile acid levels in enterohepatic circulation is also associated with changes in gut microflora, which may further contribute to some of these beneficial effects. We highlight the beneficial effects of experimental surgical procedures in rodents that alter bile secretory flow without gastric restriction or altering nutrient flow. This information suggests a role for bile acids beyond dietary fat emulsification in altering whole body glucose and lipid metabolism strongly, and also suggests emerging roles for the activation of the bile acid receptors farnesoid x receptor (FXR) and G-protein coupled bile acid receptor (TGR5) in these improvements. The limitations of rodent studies and the current state of our understanding is reviewed and the potential effects of bile acids mediating the short- and long-term metabolic improvements after bariatric surgery is critically examined.
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MESH Headings
- Animals
- Bile Acids and Salts/metabolism
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/microbiology
- Diabetes Mellitus, Type 2/pathology
- Diabetes Mellitus, Type 2/surgery
- Enterohepatic Circulation
- Gastrectomy
- Gastric Bypass
- Gastrointestinal Microbiome/physiology
- Gene Expression Regulation
- Glucose/metabolism
- Homeostasis/physiology
- Humans
- Insulin Resistance
- Obesity, Morbid/metabolism
- Obesity, Morbid/microbiology
- Obesity, Morbid/pathology
- Obesity, Morbid/surgery
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Rodentia
- Signal Transduction
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Affiliation(s)
- Vance L Albaugh
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Babak Banan
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Hana Ajouz
- American University of Beirut, Beirut, Lebanon
| | - Naji N Abumrad
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Charles R Flynn
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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27
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Fouladi F, Mitchell JE, Wonderlich JA, Steffen KJ. The Contributing Role of Bile Acids to Metabolic Improvements After Obesity and Metabolic Surgery. Obes Surg 2016; 26:2492-502. [DOI: 10.1007/s11695-016-2272-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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