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Yang C, Zhu D, Liu C, Wang W, He Y, Wang B, Li M. Lipid metabolic reprogramming mediated by circulating Nrg4 alleviates metabolic dysfunction-associated steatotic liver disease during the early recovery phase after sleeve gastrectomy. BMC Med 2024; 22:164. [PMID: 38632600 PMCID: PMC11025198 DOI: 10.1186/s12916-024-03377-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 03/28/2024] [Indexed: 04/19/2024] Open
Abstract
BACKGROUND The metabolic benefits of bariatric surgery that contribute to the alleviation of metabolic dysfunction-associated steatotic liver disease (MASLD) have been reported. However, the processes and mechanisms underlying the contribution of lipid metabolic reprogramming after bariatric surgery to attenuating MASLD remain elusive. METHODS A case-control study was designed to evaluate the impact of three of the most common adipokines (Nrg4, leptin, and adiponectin) on hepatic steatosis in the early recovery phase following sleeve gastrectomy (SG). A series of rodent and cell line experiments were subsequently used to determine the role and mechanism of secreted adipokines following SG in the alleviation of MASLD. RESULTS In morbidly obese patients, an increase in circulating Nrg4 levels is associated with the alleviation of hepatic steatosis in the early recovery phase following SG before remarkable weight loss. The temporal parameters of the mice confirmed that an increase in circulating Nrg4 levels was initially stimulated by SG and contributed to the beneficial effect of SG on hepatic lipid deposition. Moreover, this occurred early following bariatric surgery. Mechanistically, gain- and loss-of-function studies in mice or cell lines revealed that circulating Nrg4 activates ErbB4, which could positively regulate fatty acid oxidation in hepatocytes to reduce intracellular lipid deposition. CONCLUSIONS This study demonstrated that the rapid effect of SG on hepatic lipid metabolic reprogramming mediated by circulating Nrg4 alleviates MASLD.
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Affiliation(s)
- Chengcan Yang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Dongzi Zhu
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Chaofan Liu
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Wenyue Wang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Yining He
- Biostatistics Office of Clinical Research Unit, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
| | - Bing Wang
- Department of General Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
| | - Meiyi Li
- Fudan Zhangjiang Institute, Fudan University, Shanghai, 201203, China.
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Walmsley R, Chong L, Hii MW, Brown RM, Sumithran P. The effect of bariatric surgery on the expression of gastrointestinal taste receptors: A systematic review. Rev Endocr Metab Disord 2024; 25:421-446. [PMID: 38206483 PMCID: PMC10942945 DOI: 10.1007/s11154-023-09865-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Abstract
Gastrointestinal nutrient sensing via taste receptors may contribute to weight loss, metabolic improvements, and a reduced preference for sweet and fatty foods following bariatric surgery. This review aimed to investigate the effect of bariatric surgery on the expression of oral and post-oral gastrointestinal taste receptors and associations between taste receptor alterations and clinical outcomes of bariatric surgery. A systematic review was conducted to capture data from both human and animal studies on changes in the expression of taste receptors in oral or post-oral gastrointestinal tissue following any type of bariatric surgery. Databases searched included Medline, Embase, Emcare, APA PsychInfo, Cochrane Library, and CINAHL. Two human and 21 animal studies were included. Bariatric surgery alters the quantity of many sweet, umami, and fatty acid taste receptors in the gastrointestinal tract. Changes to the expression of sweet and amino acid receptors occur most often in intestinal segments surgically repositioned more proximally, such as the alimentary limb after gastric bypass. Conversely, changes to fatty acid receptors were observed more frequently in the colon than in the small intestine. Significant heterogeneity in the methodology of included studies limited conclusions regarding the direction of change in taste receptor expression induced by bariatric surgeries. Few studies have investigated associations between taste receptor expression and clinical outcomes of bariatric surgery. As such, future studies should look to investigate the relationship between bariatric surgery-induced changes to gut taste receptor expression and function and the impact of surgery on taste preferences, food palatability, and eating behaviour.Registration code in PROSPERO: CRD42022313992.
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Affiliation(s)
- Rosalind Walmsley
- Department of Medicine, St Vincent's Hospital Melbourne, University of Melbourne, Parkville, VIC, 3052, Australia
- Department of Surgery, St Vincent's Hospital Melbourne, University of Melbourne, Victoria, Australia
| | - Lynn Chong
- Department of Surgery, St Vincent's Hospital Melbourne, University of Melbourne, Victoria, Australia
| | - Michael W Hii
- Department of Surgery, St Vincent's Hospital Melbourne, University of Melbourne, Victoria, Australia
| | - Robyn M Brown
- Department of Pharmacology and Biochemistry, University of Melbourne, Victoria, Australia
| | - Priya Sumithran
- Department of Medicine, St Vincent's Hospital Melbourne, University of Melbourne, Parkville, VIC, 3052, Australia.
- Department of Surgery, Central Clinical School, Monash University, Victoria, Australia.
- Department of Endocrinology and Diabetes, Alfred Health, Victoria, Australia.
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3
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Stevenson M, Srivastava A, Nacher M, Hall C, Palaia T, Lee J, Zhao CL, Lau R, Ali MAE, Park CY, Schlamp F, Heffron SP, Fisher EA, Brathwaite C, Ragolia L. The Effect of Diet Composition on the Post-operative Outcomes of Roux-en-Y Gastric Bypass in Mice. Obes Surg 2024; 34:911-927. [PMID: 38191966 DOI: 10.1007/s11695-023-07052-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/30/2023] [Accepted: 12/30/2023] [Indexed: 01/10/2024]
Abstract
PURPOSE Roux-en-Y gastric bypass (RYGB) leads to the improvement of many obesity-associated conditions. The degree to which post-operative macronutrient composition contributes to metabolic improvement after RYGB is understudied. METHODS A mouse model of RYGB was used to examine the effects of diet on the post-operative outcomes of RYGB. Obese mice underwent either Sham or RYGB surgery and were administered either chow or HFD and then monitored for an additional 8 weeks. RESULTS After RYGB, reductions to body weight, fat mass, and lean mass were similar regardless of diet. RYGB and HFD were independently detrimental to bone mineral density and plasma vitamin D levels. Independent of surgery, HFD accelerated hematopoietic stem and progenitor cell proliferation and differentiation and exhibited greater myeloid lineage commitment. Independent of diet, systemic iron deficiency was present after RYGB. In both Sham and RYGB groups, HFD increased energy expenditure. RYGB increased fecal energy loss, and HFD after RYGB increased fecal lipid content. RYGB lowered fasting glucose and liver glycogen levels but HFD had an opposing effect. Indices of insulin sensitivity improved independent of diet. HFD impaired improvements to dyslipidemia, NAFLD, and fibrosis. CONCLUSION Post-operative diet plays a significant role in determining the degree to which RYGB reverses obesity-induced metabolic abnormalities such as hyperglycemia, dyslipidemia, and NAFLD. Diet composition may be targeted in order to assist in the treatment of post-RYGB bone mineral density loss and vitamin D deficiency as well as to reverse myeloid lineage commitment. HFD after RYGB continues to pose a significant multidimensional health risk.
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Affiliation(s)
- Matthew Stevenson
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Ankita Srivastava
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Maria Nacher
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Christopher Hall
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Thomas Palaia
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Jenny Lee
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Chaohui Lisa Zhao
- Department of Pathology, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Raymond Lau
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
- Department of Endocrinology, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Mohamed A E Ali
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Christopher Y Park
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Florencia Schlamp
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
| | - Sean P Heffron
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Edward A Fisher
- Department of Medicine, Division of Cardiology, NYU Langone Health Cardiovascular Research Center, New York University Grossman School of Medicine, New York, NY, USA
- The Leon H. Charney Division of Cardiology, Department of Medicine, The Marc and Ruti Bell Program in Vascular Biology and the Cardiovascular Research Center, NYU Grossman School of Medicine, New York, NY, USA
| | - Collin Brathwaite
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA
- Department of Surgery, NYU Langone Hospital-Long Island, Mineola, NY, USA
| | - Louis Ragolia
- Department of Biomedical Research, NYU Grossman Long Island School of Medicine, NYU Langone Hospital-Long Island, Mineola, NY, USA.
- Department of Foundations of Medicine, NYU Grossman Long Island School of Medicine, Mineola, NY, USA.
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Albaugh VL, He Y, Münzberg H, Morrison CD, Yu S, Berthoud HR. Regulation of body weight: Lessons learned from bariatric surgery. Mol Metab 2023; 68:101517. [PMID: 35644477 PMCID: PMC9938317 DOI: 10.1016/j.molmet.2022.101517] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 05/04/2022] [Accepted: 05/21/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Bariatric or weight loss surgery is currently the most effective treatment for obesity and metabolic disease. Unlike dieting and pharmacology, its beneficial effects are sustained over decades in most patients, and mortality is among the lowest for major surgery. Because there are not nearly enough surgeons to implement bariatric surgery on a global scale, intensive research efforts have begun to identify its mechanisms of action on a molecular level in order to replace surgery with targeted behavioral or pharmacological treatments. To date, however, there is no consensus as to the critical mechanisms involved. SCOPE OF REVIEW The purpose of this non-systematic review is to evaluate the existing evidence for specific molecular and inter-organ signaling pathways that play major roles in bariatric surgery-induced weight loss and metabolic benefits, with a focus on Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), in both humans and rodents. MAJOR CONCLUSIONS Gut-brain communication and its brain targets of food intake control and energy balance regulation are complex and redundant. Although the relatively young science of bariatric surgery has generated a number of hypotheses, no clear and unique mechanism has yet emerged. It seems increasingly likely that the broad physiological and behavioral effects produced by bariatric surgery do not involve a single mechanism, but rather multiple signaling pathways. Besides a need to improve and better validate surgeries in animals, advanced techniques, including inducible, tissue-specific knockout models, and the use of humanized physiological traits will be necessary. State-of-the-art genetically-guided neural identification techniques should be used to more selectively manipulate function-specific pathways.
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Affiliation(s)
- Vance L Albaugh
- Translational and Integrative Gastrointestinal and Endocrine Research Laboratory, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Yanlin He
- Brain Glycemic and Metabolism Control Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Heike Münzberg
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Christopher D Morrison
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Sangho Yu
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA
| | - Hans-Rudolf Berthoud
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, LA, USA.
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5
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Mercado A, Pham A, Wang Z, Huang W, Chan P, Ibrahim H, Gogineni H, Huang Y, Wang J. Effects of bariatric surgery on drug pharmacokinetics-Preclinical studies. Front Pharmacol 2023; 14:1133415. [PMID: 37089960 PMCID: PMC10113450 DOI: 10.3389/fphar.2023.1133415] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 03/27/2023] [Indexed: 04/25/2023] Open
Abstract
With the rising worldwide obesity rates, bariatric surgeries are increasing. Although the surgery offers an effective treatment option for weight loss, the procedure causes dramatic physiological and metabolic changes. Animal models in rodents provide a valuable tool for studying the systemic effects of the surgery. Since the surgery may significantly influence the pharmacokinetic properties of medications, animal studies should provide essential insight into mechanisms underlying changes in how the body handles the drug. This review summarizes research work in rodents regarding the impact of standard bariatric procedures on pharmacokinetics. A qualitative literature search was conducted via PubMed, the Cochrane Central Register of Controlled Trials (CENTRAL), and EMBASE. Studies that examined bariatric surgery's effects on drug pharmacokinetics in rodent models were included. Clinical studies and studies not involving drug interventions were excluded. A total of 15 studies were identified and assessed in this review. These studies demonstrate the possible impact of bariatric surgery on drug absorption, distribution, metabolism, excretion, and potential mechanisms. Pharmacokinetic changes exhibited in the limited pre-clinical studies highlight a need for further investigation to fully understand the impact and mechanism of bariatric surgery on drug responses.
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Affiliation(s)
- Angela Mercado
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
| | - Anna Pham
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
| | - Zhijun Wang
- College of Pharmacy, Marshall B. Ketchum University, Fullerton, CA, United States
| | - Wendong Huang
- Department of Diabetes Complications and Metabolism, Arthur Riggs-Diabetes and Metabolism Research Institute, City of Hope National Medical Center, Duarte, CA, United States
| | - Patrick Chan
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
| | | | - Hyma Gogineni
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
| | - Ying Huang
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
- *Correspondence: Ying Huang, ; Jeffrey Wang,
| | - Jeffrey Wang
- College of Pharmacy, Western University of Health Sciences, Pomona, CA, United States
- *Correspondence: Ying Huang, ; Jeffrey Wang,
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6
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Filippello A, Di Mauro S, Scamporrino A, Torrisi SA, Leggio GM, Di Pino A, Scicali R, Di Marco M, Malaguarnera R, Purrello F, Piro S. Molecular Effects of Chronic Exposure to Palmitate in Intestinal Organoids: A New Model to Study Obesity and Diabetes. Int J Mol Sci 2022; 23:ijms23147751. [PMID: 35887100 PMCID: PMC9320247 DOI: 10.3390/ijms23147751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022] Open
Abstract
Intestinal cell dysfunctions involved in obesity and associated diabetes could be correlated with impaired intestinal cell development. To date, the molecular mechanisms underlying these dysfunctions have been poorly investigated because of the lack of a good model for studying obesity. The main aim of this study was to investigate the effects of lipotoxicity on intestinal cell differentiation in small intestinal organoid platforms, which are used to analyze the regulation of cell differentiation. Mouse intestinal organoids were grown in the presence/absence of high palmitate concentrations (0.5 mM) for 48 h to simulate lipotoxicity. Palmitate treatment altered the expression of markers involved in the differentiation of enterocytes and goblet cells in the early (Hes1) and late (Muc2) phases of their development, respectively, and it modified enterocytes and goblet cell numbers. Furthermore, the expression of enteroendocrine cell progenitors (Ngn3) and I cells (CCK) markers was also impaired, as well as CCK-positive cell numbers and CCK secretion. Our data indicate, for the first time, that lipotoxicity simultaneously influences the differentiation of specific intestinal cell types in the gut: enterocytes, goblet cells and CCK cells. Through this study, we identified novel targets associated with molecular mechanisms affected by lipotoxicity that could be important for obesity and diabetes therapy.
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Affiliation(s)
- Agnese Filippello
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | - Stefania Di Mauro
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | - Alessandra Scamporrino
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | - Sebastiano Alfio Torrisi
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia, 64, 95123 Catania, Italy; (S.A.T.); (G.M.L.)
| | - Gian Marco Leggio
- Department of Biomedical and Biotechnological Sciences, University of Catania, Via S. Sofia, 64, 95123 Catania, Italy; (S.A.T.); (G.M.L.)
| | - Antonino Di Pino
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | - Roberto Scicali
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | - Maurizio Di Marco
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
| | | | - Francesco Purrello
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
- Correspondence: ; Tel.: +39-09-5759-8401
| | - Salvatore Piro
- Department of Clinical and Experimental Medicine, Internal Medicine, Garibaldi-Nesima Hospital, University of Catania, 95122 Catania, Italy; (A.F.); (S.D.M.); (A.S.); (A.D.P.); (R.S.); (M.D.M.); (S.P.)
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7
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Ghanem M, Lewis GF, Xiao C. Recent advances in cytoplasmic lipid droplet metabolism in intestinal enterocyte. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159197. [PMID: 35820577 DOI: 10.1016/j.bbalip.2022.159197] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 06/03/2022] [Accepted: 06/14/2022] [Indexed: 11/30/2022]
Abstract
Processing of dietary fats in the intestine is a highly regulated process that influences whole-body energy homeostasis and multiple physiological functions. Dysregulated lipid handling in the intestine leads to dyslipidemia and atherosclerotic cardiovascular disease. In intestinal enterocytes, lipids are incorporated into lipoproteins and cytoplasmic lipid droplets (CLDs). Lipoprotein synthesis and CLD metabolism are inter-connected pathways with multiple points of regulation. This review aims to highlight recent advances in the regulatory mechanisms of lipid processing in the enterocyte, with particular focus on CLDs. In-depth understanding of the regulation of lipid metabolism in the enterocyte may help identify therapeutic targets for the treatment and prevention of metabolic disorders.
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Affiliation(s)
- Murooj Ghanem
- Department of Anatomy, Physiology and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Gary F Lewis
- Departments of Medicine and Physiology, University of Toronto, and University Health Network, Toronto, ON, Canada
| | - Changting Xiao
- Department of Anatomy, Physiology and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
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8
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Camastra S, Palumbo M, Santini F. Nutrients handling after bariatric surgery, the role of gastrointestinal adaptation. Eat Weight Disord 2022; 27:449-461. [PMID: 33895917 PMCID: PMC8933374 DOI: 10.1007/s40519-021-01194-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 04/10/2021] [Indexed: 01/19/2023] Open
Abstract
Bariatric surgery determines a rearrangement of the gastrointestinal tract that influences nutrient handling and plays a role in the metabolic changes observed after surgery. Most of the changes depend on the accelerated gastric emptying observed in Roux-en-Y gastric bypass (RYGB) and, to a lesser extent, in sleeve gastrectomy (SG). The rapid delivery of meal into the jejunum, particularly after RYGB, contributes to the prompt appearance of glucose in peripheral circulation. Glucose increase is the principal determinant of GLP-1 increase with the consequent stimulation of insulin secretion, the latter balanced by a paradoxical glucagon increase that stimulates EGP to prevent hypoglycaemia. Protein digestion and amino acid absorption appear accelerated after RYGB but not after SG. After RYGB, the adaptation of the gut to the new condition participates to the metabolic change. The intestinal transit is delayed, the gut microbioma is changed, the epithelium becomes hypertrophic and increases the expression of glucose transporter and of the number of cell secreting hormones. These changes are not observed after SG. After RYGB-less after SG-bile acids (BA) increase, influencing glucose metabolism probably modulating FXR and TGR5 with an effect on insulin sensitivity. Muscle, hepatic and adipose tissue insulin sensitivity improve, and the gut reinforces the recovery of IS by enhancing glucose uptake and through the effect of the BA. The intestinal changes observed after RYGB result in a light malabsorption of lipid but not of carbohydrate and protein. In conclusion, functional and morphological adaptations of the gut after RYGB and SG activate inter-organs cross-talk that modulates the metabolic changes observed after surgery.Level of evidence Level V, narrative literature review.
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Affiliation(s)
- Stefania Camastra
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma, 67, 56126, Pisa, Italy. .,Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, Pisa, Italy.
| | - Maria Palumbo
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma, 67, 56126, Pisa, Italy
| | - Ferruccio Santini
- Department of Clinical and Experimental Medicine, University of Pisa, Via Roma, 67, 56126, Pisa, Italy.,Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, Pisa, Italy
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9
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Lebrun LJ, Moreira S, Tavernier A, Niot I. Postprandial consequences of lipid absorption in the onset of obesity: Role of intestinal CD36. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159154. [DOI: 10.1016/j.bbalip.2022.159154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 10/18/2022]
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10
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Čuklina J, Lee CH, Williams EG, Sajic T, Collins BC, Rodríguez Martínez M, Sharma VS, Wendt F, Goetze S, Keele GR, Wollscheid B, Aebersold R, Pedrioli PGA. Diagnostics and correction of batch effects in large-scale proteomic studies: a tutorial. Mol Syst Biol 2021; 17:e10240. [PMID: 34432947 PMCID: PMC8447595 DOI: 10.15252/msb.202110240] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 07/16/2021] [Accepted: 07/26/2021] [Indexed: 12/11/2022] Open
Abstract
Advancements in mass spectrometry-based proteomics have enabled experiments encompassing hundreds of samples. While these large sample sets deliver much-needed statistical power, handling them introduces technical variability known as batch effects. Here, we present a step-by-step protocol for the assessment, normalization, and batch correction of proteomic data. We review established methodologies from related fields and describe solutions specific to proteomic challenges, such as ion intensity drift and missing values in quantitative feature matrices. Finally, we compile a set of techniques that enable control of batch effect adjustment quality. We provide an R package, "proBatch", containing functions required for each step of the protocol. We demonstrate the utility of this methodology on five proteomic datasets each encompassing hundreds of samples and consisting of multiple experimental designs. In conclusion, we provide guidelines and tools to make the extraction of true biological signal from large proteomic studies more robust and transparent, ultimately facilitating reliable and reproducible research in clinical proteomics and systems biology.
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Affiliation(s)
- Jelena Čuklina
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
- PhD Program in Systems BiologyUniversity of Zurich and ETH ZurichZurichSwitzerland
- IBM Research EuropeRüschlikonSwitzerland
| | - Chloe H Lee
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
| | - Evan G Williams
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
- Luxembourg Centre for Systems BiomedicineUniversity of LuxembourgLuxembourgLuxembourg
| | - Tatjana Sajic
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
| | - Ben C Collins
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
- Queen’s University BelfastBelfastUK
| | | | - Varun S Sharma
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
| | - Fabian Wendt
- Department of Health Sciences and TechnologyInstitute of Translational MedicineETH ZurichZurichSwitzerland
| | - Sandra Goetze
- Department of Health Sciences and TechnologyInstitute of Translational MedicineETH ZurichZurichSwitzerland
- ETH ZürichPHRT‐CPACZürichSwitzerland
- SIB Swiss Institute of BioinformaticsLausanneSwitzerland
| | | | - Bernd Wollscheid
- Department of Health Sciences and TechnologyInstitute of Translational MedicineETH ZurichZurichSwitzerland
- ETH ZürichPHRT‐CPACZürichSwitzerland
- SIB Swiss Institute of BioinformaticsLausanneSwitzerland
| | - Ruedi Aebersold
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
- Faculty of ScienceUniversity of ZurichZurichSwitzerland
| | - Patrick G A Pedrioli
- Department of BiologyInstitute of Molecular Systems BiologyETH ZurichZurichSwitzerland
- Department of Health Sciences and TechnologyInstitute of Translational MedicineETH ZurichZurichSwitzerland
- ETH ZürichPHRT‐CPACZürichSwitzerland
- SIB Swiss Institute of BioinformaticsLausanneSwitzerland
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11
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Zembroski AS, Xiao C, Buhman KK. The Roles of Cytoplasmic Lipid Droplets in Modulating Intestinal Uptake of Dietary Fat. Annu Rev Nutr 2021; 41:79-104. [PMID: 34283920 DOI: 10.1146/annurev-nutr-110320-013657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dietary fat absorption is required for health but also contributes to hyperlipidemia and metabolic disease when dysregulated. One step in the process of dietary fat absorption is the formation of cytoplasmic lipid droplets (CLDs) in small intestinal enterocytes; these CLDs serve as dynamic triacylglycerol storage organelles that influence the rate at which dietary fat is absorbed. Recent studies have uncovered novel factors regulating enterocyte CLD metabolism that in turn influence the absorption of dietary fat. These include peroxisome proliferator-activated receptor α activation, compartmentalization of different lipid pools, the gut microbiome, liver X receptor and farnesoid X receptor activation, obesity, and physiological factors stimulating CLD mobilization. Understanding how enterocyte CLD metabolism is regulated is key in modulating the absorption of dietary fat in the prevention of hyperlipidemia and its associated metabolic disorders. Expected final online publication date for the Annual Review of Nutrition, Volume 41 is September 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Alyssa S Zembroski
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana 47907, USA;
| | - Changting Xiao
- Department of Anatomy, Physiology and Pharmacology, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Kimberly K Buhman
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana 47907, USA;
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12
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Shang X, Zhang X, Du C, Ma Z, Jin S, Ao N, Yang J, Du J. Clostridium butyricum Alleviates Gut Microbiota Alteration-Induced Bone Loss after Bariatric Surgery by Promoting Bone Autophagy. J Pharmacol Exp Ther 2021; 377:254-264. [PMID: 33658315 DOI: 10.1124/jpet.120.000410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 03/01/2021] [Indexed: 12/12/2022] Open
Abstract
Bariatric surgery is the most common and effective treatment of severe obesity; however, these bariatric procedures always result in detrimental effects on bone metabolism by underlying mechanisms. This study aims to investigate the skeletal response to bariatric surgery and to explore whether Clostridium butyricum alleviates gut microbiota alteration-induced bone loss after bariatric surgery. Consequently, male SD rats received Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) surgery, respectively, followed by body weight recording. The bone loss after bariatric surgery was further determined by dual-energy X-ray absorptiometry (DXA), micro-CT measurement, histologic analyses, and Western blot. Besides, 16S rDNA gene sequencing was performed to determine the gut microbiota alteration after surgery, and intervention with fecal microbiota from RYGB donor was conducted in obese SD rats, followed by C. butyricum administration. Accordingly, rats in the RYGB and SG groups maintained sustained weight loss, and DXA and micro-CT measurement further demonstrated significant bone loss after bariatric surgery. Besides, histologic and Western blot analyses validated enhanced osteoclastogenesis and inhibited osteoblastogenesis and defective autophagy after surgery. The 16S rDNA gene sequencing suggested a significant alteration of gut microbiota composition in the RYGB group, and intervention with fecal microbiota from RYGB donor further determined that this kind of alteration contributed to the bone loss after RYGB. Meanwhile, C. butyricum might protect against this postoperative bone loss by promoting osteoblast autophagy. In summary, this study suggests novel mechanisms to clarify the skeletal response to bariatric surgery and provides a potential candidate for the treatment of bone disorder among bariatric patients. SIGNIFICANCE STATEMENT: The significance of this study is the discovery of obvious bone loss and defective autophagy after bariatric surgery. Besides, it is revealed that gut microbiota alterations could be the reason for impaired bone mass after bariatric surgery. Furthermore, Clostridium butyricum could alleviate the gut microbiota alteration-induced bone loss after bariatric surgery by promoting osteoblast autophagy.
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Affiliation(s)
- Xueying Shang
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiaolei Zhang
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Cen Du
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zhuoqi Ma
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Shi Jin
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Na Ao
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jing Yang
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jian Du
- Department of Endocrinology, The Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
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13
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Wallenius V, Elias E, Elebring E, Haisma B, Casselbrant A, Larraufie P, Spak E, Reimann F, le Roux CW, Docherty NG, Gribble FM, Fändriks L. Suppression of enteroendocrine cell glucagon-like peptide (GLP)-1 release by fat-induced small intestinal ketogenesis: a mechanism targeted by Roux-en-Y gastric bypass surgery but not by preoperative very-low-calorie diet. Gut 2020; 69:1423-1431. [PMID: 31753852 PMCID: PMC7347417 DOI: 10.1136/gutjnl-2019-319372] [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: 06/27/2019] [Revised: 11/04/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Food intake normally stimulates release of satiety and insulin-stimulating intestinal hormones, such as glucagon-like peptide (GLP)-1. This response is blunted in obese insulin resistant subjects, but is rapidly restored following Roux-en-Y gastric bypass (RYGB) surgery. We hypothesised this to be a result of the metabolic changes taking place in the small intestinal mucosa following the anatomical rearrangement after RYGB surgery, and aimed at identifying such mechanisms. DESIGN Jejunal mucosa biopsies from patients undergoing RYGB surgery were retrieved before and after very-low calorie diet, at time of surgery and 6 months postoperatively. Samples were analysed by global protein expression analysis and Western blotting. Biological functionality of these findings was explored in mice and enteroendocrine cells (EECs) primary mouse jejunal cell cultures. RESULTS The most prominent change found after RYGB was decreased jejunal expression of the rate-limiting ketogenic enzyme mitochondrial 3-hydroxy-3-methylglutaryl-CoA synthase (mHMGCS), corroborated by decreased ketone body levels. In mice, prolonged high-fat feeding induced the expression of mHMGCS and functional ketogenesis in jejunum. The effect of ketone bodies on gut peptide secretion in EECs showed a ∼40% inhibition of GLP-1 release compared with baseline. CONCLUSION Intestinal ketogenesis is induced by high-fat diet and inhibited by RYGB surgery. In cell culture, ketone bodies inhibited GLP-1 release from EECs. Thus, we suggest that this may be a mechanism by which RYGB can remove the inhibitory effect of ketone bodies on EECs, thereby restituting the responsiveness of EECs resulting in increased meal-stimulated levels of GLP-1 after surgery.
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Affiliation(s)
- Ville Wallenius
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden .,Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Östra, University of Gothenburg, Gothenburg, Sweden
| | - Erik Elias
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden,Department of Surgery, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden
| | - Erik Elebring
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden
| | - Bauke Haisma
- Metabolic Research Laboratories, University of Cambridge, Cambridge, UK
| | - Anna Casselbrant
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden
| | - Pierre Larraufie
- Metabolic Research Laboratories, University of Cambridge, Cambridge, UK
| | - Emma Spak
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden
| | - Frank Reimann
- Metabolic Research Laboratories, University of Cambridge, Cambridge, UK
| | - Carel W le Roux
- Diabetes Complications Research Centre, Conway Institute, University College of Dublin, Dublin, Ireland
| | - Neil G Docherty
- Diabetes Complications Research Centre, Conway Institute, University College of Dublin, Dublin, Ireland
| | - Fiona M Gribble
- Metabolic Research Laboratories, University of Cambridge, Cambridge, UK
| | - Lars Fändriks
- Department of Gastrosurgical Research and Education, Institute of Clinical Sciences, Sahlgrenska Academy, Sahlgrenska University Hospital/Sahlgrenska, University of Gothenburg, Gothenburg, Sweden
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