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McGlone ER, Bloom SR, Tan TMM. Glucagon resistance and metabolic-associated steatotic liver disease: a review of the evidence. J Endocrinol 2024; 261:e230365. [PMID: 38579751 PMCID: PMC11067060 DOI: 10.1530/joe-23-0365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 04/03/2024] [Indexed: 04/07/2024]
Abstract
Metabolic-associated steatotic liver disease (MASLD) is closely associated with obesity. MASLD affects over 1 billion adults globally but there are few treatment options available. Glucagon is a key metabolic regulator, and its actions include the reduction of liver fat through direct and indirect means. Chronic glucagon signalling deficiency is associated with hyperaminoacidaemia, hyperglucagonaemia and increased circulating levels of glucagon-like peptide 1 (GLP-1) and fibroblast growth factor 21 (FGF-21). Reduction in glucagon activity decreases hepatic amino acid and triglyceride catabolism; metabolic effects include improved glucose tolerance, increased plasma cholesterol and increased liver fat. Conversely, glucagon infusion in healthy volunteers leads to increased hepatic glucose output, decreased levels of plasma amino acids and increased urea production, decreased plasma cholesterol and increased energy expenditure. Patients with MASLD share many hormonal and metabolic characteristics with models of glucagon signalling deficiency, suggesting that they could be resistant to glucagon. Although there are few studies of the effects of glucagon infusion in patients with obesity and/or MASLD, there is some evidence that the expected effect of glucagon on amino acid catabolism may be attenuated. Taken together, this evidence supports the notion that glucagon resistance exists in patients with MASLD and may contribute to the pathogenesis of MASLD. Further studies are warranted to investigate the direct effects of glucagon on metabolism in patients with MASLD.
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Affiliation(s)
- Emma Rose McGlone
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Stephen R Bloom
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Tricia M-M Tan
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
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2
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Onghena L, Geerts A, Berrevoet F, Pirenne J, Verbeek J, Bonaccorsi-Riani E, Dahlqvist G, Vonghia L, Detry O, Delwaide J, Lefere S, van Nieuwenhove Y. Bariatric surgery post-liver transplantation: A Belgian nationwide study. Liver Transpl 2024:01445473-990000000-00355. [PMID: 38551388 DOI: 10.1097/lvt.0000000000000372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/10/2024] [Indexed: 06/28/2024]
Abstract
Weight gain poses a rising concern post-liver transplantation (LT), and metabolic dysfunction-associated steatotic liver disease might impair graft health. The timing is crucial when considering bariatric surgery (BS) in a population with liver disease or transplantation. BS can be considered for post-LT weight gain, although the evidence is limited and the long-term outcome still uncertain. We conducted a national retrospective analysis in 5 Belgian transplant centers and included 25 patients with an LT followed by a bariatric procedure. A total of 187 LT patients without BS were included for comparison. Clinical, biochemical, and outcome data were retrospectively retrieved. In our nationwide cohort, 25 patients had undergone BS post-LT, at a median 3.5 years after LT. Twenty-one (84.0%) patients received a sleeve gastrectomy (SG). Patients were predominantly male (72.0%), with a lower age at time of transplantation compared with the non-BS population (54.5 vs. 60.6, p <0.001). Weight loss was significant and sustained, with a decrease in body mass index from 41.0±4.5 pre-BS to 32.6±5.8 1-3 years post-BS ( p <0.001) and 31.1±5.8 3-5 years post-BS ( p <0.001). Three pre-BS (12.0%) patients presented with recurrent and one (4.0%) de novo metabolic dysfunction-associated steatotic liver disease after LT, with 100% resolution post-BS ( p =0.016). Notable reductions were observed in alanine transaminase levels (40.5±28.5 U/L to 27.1±25.1 U/L post-BS, p =0.05) and HbA1c levels (6.9±1.6 to 6.0±1.4 post-BS, p <0.001). Three patients were re-transplanted, and eight patients died, of which five (20.0%) due to a nonhepatic malignancy and one (4.0%) due to liver failure. SG is the favored BS post-LT and has proven to be safe and feasible in a post-LT setting with favorable metabolic consequences. SG post-LT is a valid treatment for de novo and recurrent metabolic dysfunction-associated steatotic liver disease post-LT. Although we report on the largest cohort to date, there is still a need for larger cohorts to examine the effect of BS on patient and graft survival.
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Affiliation(s)
- Louis Onghena
- Department for Human Structure and Repair, Ghent University Hospital, Ghent, Belgium
- Department of Gastrointestinal Surgery, Ghent University Hospital, Ghent, Belgium
- Department for Human Structure and Repair, Ghent University Hospital, Ghent, Belgium
- Department of General and Hepatobiliary Surgery and Liver Transplantation, Ghent University Hospital, Ghent, Belgium
- Department of Internal Medicine and Pediatrics, Hepatology Research Unit, Ghent University, Ghent, Belgium
- Liver Research Center Ghent, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Anja Geerts
- Department of Internal Medicine and Pediatrics, Hepatology Research Unit, Ghent University, Ghent, Belgium
- Liver Research Center Ghent, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Frederik Berrevoet
- Department for Human Structure and Repair, Ghent University Hospital, Ghent, Belgium
| | - Jacques Pirenne
- Department for Abdominal Transplant Surgery and Coordination, University Hospitals Leuven, Leuven, Belgium
| | - Jef Verbeek
- Department of Gastroenterology & Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Eliano Bonaccorsi-Riani
- Abdominal Transplant Unit, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
- Pôle de Chirurgie Expérimentale et Transplantation, Institute de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
| | - Geraldine Dahlqvist
- Department of Hepatogastroenterology and Liver Transplantation, University Hospitals Saint-Luc, Brussels, Belgium
| | - Luisa Vonghia
- Division of Gastroenterology and Hepatology, University Hospital Antwerp, Antwerp, Belgium
| | - Olivier Detry
- Department of Abdominal Surgery and Transplantation, CHU Liege, Liege, Belgium
| | - Jean Delwaide
- Department of Hepatogastroenterology, CHU Liege, Liege, Belgium
| | - Sander Lefere
- Department of Internal Medicine and Pediatrics, Hepatology Research Unit, Ghent University, Ghent, Belgium
- Liver Research Center Ghent, Ghent University, Ghent University Hospital, Ghent, Belgium
| | - Yves van Nieuwenhove
- Department for Human Structure and Repair, Ghent University Hospital, Ghent, Belgium
- Department of Gastrointestinal Surgery, Ghent University Hospital, Ghent, Belgium
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3
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Navarro-Masip È, Mestres N, Zorzano-Martínez M, Salinas-Roca B, Sánchez E, López-Cano C, Herrerías F, de la Fuente MC, Santamaría M, León-Mengíbar J, Soler AG, Bueno M, Lecube A. Mid-term Effects of Bariatric Surgery on Metabolic Dysfunction-Associated Fatty Liver Disease Remission and Predictive Factors: A Prospective Study with a Focus on Non-invasive Diagnosis. Obes Surg 2024; 34:841-849. [PMID: 38285299 DOI: 10.1007/s11695-024-07071-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/10/2024] [Accepted: 01/18/2024] [Indexed: 01/30/2024]
Abstract
PURPOSE Non-alcoholic fatty liver disease (NAFLD), now termed metabolic dysfunction-associated fatty liver disease (MAFLD), is a growing health concern associated with obesity and type 2 diabetes. Bariatric surgery offers potential benefits, but its impact on MAFLD remains incompletely understood, with scarce long-term follow-up prospective studies. Moreover, being liver biopsy the gold standard for liver condition measurement, the need for non-invasive techniques that allow the assessment of MAFLD development after bariatric surgery is imperative. OWLiver® Care and OWLiver® represent two serum lipidomic tests, featuring panels comprising 11 and 20 triglycerides, respectively. MATERIALS AND METHODS We conducted a prospective study involving 80 Caucasians to assess the effects of bariatric surgery on MAFLD using non-invasive diagnostics and to identify baseline predictors of MAFLD remission. Serum samples were collected before surgery and at a 3-year follow-up. RESULTS After 3 years, the proportion of patients exhibiting a healthy liver escalated from 5.0% at baseline to 26.3%. Conversely, the percentage of steatohepatitis declined from 35.1% to a mere 7.6%. Younger age, female gender, and the absence of type 2 diabetes were associated with MAFLD remission. However, age stood as the only independent variable associated with this favorable liver evolution (R2 = 0.112). CONCLUSION Bariatric surgery demonstrates mid-term benefits in improving MAFLD, with younger age as a baseline predictor of remission. Non-invasive diagnostic methods, like OWLiver®, are valuable tools for monitoring MAFLD evolution. Further research with larger populations and longer follow-up periods is warranted to refine personalized treatment approaches.
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Affiliation(s)
- Èlia Navarro-Masip
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Núria Mestres
- General and Digestive Surgery Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Marta Zorzano-Martínez
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Blanca Salinas-Roca
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Facultat de Ciències de la Salut-Universitat Ramón Llull Blanquerna, C/ de Padilla, 326-332, 08025, Barcelona, Catalonia, Spain
| | - Enric Sánchez
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Carolina López-Cano
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Fernando Herrerías
- General and Digestive Surgery Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Mari Cruz de la Fuente
- General and Digestive Surgery Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Maite Santamaría
- General and Digestive Surgery Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Josep León-Mengíbar
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Ana-Gloria Soler
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Marta Bueno
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain
| | - Albert Lecube
- Obesity, Diabetes and Metabolism (ODIM) Research Group, Institut de Recerca Biomèdica de Lleida, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain.
- Endocrinology and Nutrition Department, Arnau de Vilanova University Hospital, Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain.
- Medicine and Surgery Department, University of Lleida (UdL), Avinguda Rovira Roure 80, 25198, Lleida, Catalonia, Spain.
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Jiang H, Zang L. GLP-1/GLP-1RAs: New Options for the Drug Treatment of NAFLD. Curr Pharm Des 2024; 30:100-114. [PMID: 38532322 DOI: 10.2174/0113816128283153231226103218] [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: 10/12/2023] [Accepted: 12/14/2023] [Indexed: 03/28/2024]
Abstract
Non-alcoholic fatty liver disease (NAFLD) has recently emerged as a global public health concern. Currently, the cornerstone of NAFLD treatment is lifestyle modification and, if necessary, weight loss. However, compliance is a challenge, and this approach alone may not be sufficient to halt and treat the more serious disease development, so medication is urgently needed. Nevertheless, no medicines are approved to treat NAFLD. Glucagon-like peptide-1 (GLP-1) is an enteropeptide hormone that inhibits glucagon synthesis, promotes insulin secretion, and delays gastric emptying. GLP-1 has been found in recent studies to be beneficial for the management of NAFLD, and the marketed GLP-1 agonist drugs have different degrees of effectiveness for NAFLD while lowering blood glucose. In this article, we review GLP-1 and its physiological roles, the pathogenesis of NAFLD, the correlation between NAFLD and GLP-1 signaling, and potential strategies for GLP-1 treatment of NAFLD.
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Affiliation(s)
- Haoran Jiang
- Laboratory of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Linquan Zang
- Laboratory of Pharmacology, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
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5
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Machado MV. MASLD treatment-a shift in the paradigm is imminent. Front Med (Lausanne) 2023; 10:1316284. [PMID: 38146424 PMCID: PMC10749497 DOI: 10.3389/fmed.2023.1316284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 11/24/2023] [Indexed: 12/27/2023] Open
Abstract
MASLD prevalence is growing towards the leading cause of end-stage liver disease. Up to today, the most effective treatment is weight loss. Weight loss interventions are moving from lifestyle changes to bariatric surgery or endoscopy, and, more recently, to a new wave of anti-obesity drugs that can compete with bariatric surgery. Liver-targeted therapy is a necessity for those patients who already present liver fibrosis. The field is moving fast, and in the near future, we will testify to a disruptive change in MASLD treatment, similar to the paradigm-shift that occurred for hepatitis C almost one decade ago with direct antiviral agents.
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Affiliation(s)
- Mariana Verdelho Machado
- Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
- Hospital de Vila Franca de Xira, Vila Franca de Xira, Portugal
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6
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Pereira SS, Guimarães M, Monteiro MP. Towards precision medicine in bariatric surgery prescription. Rev Endocr Metab Disord 2023; 24:961-977. [PMID: 37129798 PMCID: PMC10492755 DOI: 10.1007/s11154-023-09801-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/12/2023] [Indexed: 05/03/2023]
Abstract
Obesity is a complex, multifactorial and chronic disease. Bariatric surgery is a safe and effective treatment intervention for obesity and obesity-related diseases. However, weight loss after surgery can be highly heterogeneous and is not entirely predictable, particularly in the long-term after intervention. In this review, we present and discuss the available data on patient-related and procedure-related factors that were previously appointed as putative predictors of bariatric surgery outcomes. In addition, we present a critical appraisal of the available evidence on which factors could be taken into account when recommending and deciding which bariatric procedure to perform. Several patient-related features were identified as having a potential impact on weight loss after bariatric surgery, including age, gender, anthropometrics, obesity co-morbidities, eating behavior, genetic background, circulating biomarkers (microRNAs, metabolites and hormones), psychological and socioeconomic factors. However, none of these factors are sufficiently robust to be used as predictive factors. Overall, there is no doubt that before we long for precision medicine, there is the unmet need for a better understanding of the socio-biological drivers of weight gain, weight loss failure and weight-regain after bariatric interventions. Machine learning models targeting preoperative factors and effectiveness measurements of specific bariatric surgery interventions, would enable a more precise identification of the causal links between determinants of weight gain and weight loss. Artificial intelligence algorithms to be used in clinical practice to predict the response to bariatric surgery interventions could then be created, which would ultimately allow to move forward into precision medicine in bariatric surgery prescription.
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Affiliation(s)
- Sofia S Pereira
- UMIB - Unit for Multidisciplinary Research in Biomedicine, ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
- ITR - Laboratory of Integrative and Translocation Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
| | - Marta Guimarães
- UMIB - Unit for Multidisciplinary Research in Biomedicine, ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
- ITR - Laboratory of Integrative and Translocation Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal
- Department of General Surgery, Hospital São Sebastião, Centro Hospitalar de Entre o Douro e Vouga, Rua Dr. Cândido Pinho, 4050-220, Santa Maia da Feira, Portugal
| | - Mariana P Monteiro
- UMIB - Unit for Multidisciplinary Research in Biomedicine, ICBAS - School of Medicine and Biomedical Sciences, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal.
- ITR - Laboratory of Integrative and Translocation Research in Population Health, Rua das Taipas 135, 4050-600, Porto, Portugal.
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7
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Lim WH, Lin SY, Ng CH, Tan DJH, Xiao J, Yong JN, Tay PWL, Syn N, Chin YH, Chan KE, Khoo CM, Chew N, Foo RSY, Shabbir A, Tan EX, Huang DQ, Noureddin M, Sanyal AJ, Siddiqui MS, Muthiah MD. Foregut bypass vs. restrictive bariatric procedures for nonalcoholic fatty liver disease: a meta-analysis of 3,355 individuals. Hepatobiliary Surg Nutr 2023; 12:658-670. [PMID: 37886204 PMCID: PMC10598314 DOI: 10.21037/hbsn-21-520] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/12/2022] [Indexed: 10/28/2023]
Abstract
Background Bariatric surgery represents an important treatment option for severely obese patients with nonalcoholic fatty liver disease (NAFLD). However, there remains inadequate data regarding the effects of different bariatric procedures on various NAFLD parameters, especially for histological outcomes. Thus, this meta-analysis aimed to compare the effects of restrictive bariatric procedures and foregut bypass on the metabolic, biochemical, and histological parameters for patients with NAFLD. Methods Medline and Embase were searched for articles relating to bariatric procedures and NAFLD. Pairwise meta-analysis was conducted to compare efficacy of bariatric procedures pre- vs. post-procedure with subgroup analysis to further compare restrictive against foregut bypass procedures. Results Thirty-one articles involving 3,355 patients who underwent restrictive bariatric procedures (n=1,460) and foregut bypass (n=1,895) were included. Both foregut bypass (P<0.01) and restrictive procedures (P=0.03) significantly increased odds of fibrosis resolution. Compared to restrictive procedures, foregut bypass resulted in a borderline non-significant decrease in fibrosis score (P=0.06) and significantly lower steatosis score (P<0.001). For metabolic parameters, foregut bypass significantly lowered body mass index (P=0.003) and low-density lipoprotein (P=0.008) compared to restrictive procedures. No significant differences were observed between both procedures for aspartate aminotransferase (P=0.17) and alkaline phosphatase (P=0.61). However, foregut bypass resulted in significantly lower gamma-glutamyl transferase than restrictive procedures (P=0.01) while restrictive procedures resulted in significantly lower alanine transaminase than foregut bypass (P=0.02). Conclusions The significant histological and metabolic advantages and comparable improvements in biochemical outcomes support the choice of foregut bypass over restrictive bariatric procedures in NAFLD management.
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Affiliation(s)
- Wen Hui Lim
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Snow Yunni Lin
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Cheng Han Ng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Darren Jun Hao Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jieling Xiao
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Jie Ning Yong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Phoebe Wen Lin Tay
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Nicholas Syn
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Yip Han Chin
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Kai En Chan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Chin Meng Khoo
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Endocrinology, Department of Medicine, National University Hospital, Singapore, Singapore
| | - Nicholas Chew
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Hospital, Singapore, Singapore
| | - Roger S. Y. Foo
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Cardiology, National University Heart Centre, National University Hospital, Singapore, Singapore
| | - Asim Shabbir
- Division of General Surgery (Upper Gastrointestinal Surgery), Department of Surgery, National University Hospital, Singapore, Singapore
| | - Eunice X. Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore, Singapore
- National University Centre for Organ Transplantation, National University Health System, Singapore, Singapore
| | - Daniel Q. Huang
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore, Singapore
- National University Centre for Organ Transplantation, National University Health System, Singapore, Singapore
| | - Mazen Noureddin
- Cedars-Sinai Fatty Liver Program, Division of Digestive and Liver Diseases, Department of Medicine, Comprehensive Transplant Center, Cedars-Sinai Medical Centre, Los Angeles, CA, USA
| | - Arun J. Sanyal
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Mohammad Shadab Siddiqui
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Mark D. Muthiah
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital, Singapore, Singapore
- National University Centre for Organ Transplantation, National University Health System, Singapore, Singapore
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8
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Petagine L, Zariwala MG, Patel VB. Non-alcoholic fatty liver disease: Immunological mechanisms and current treatments. World J Gastroenterol 2023; 29:4831-4850. [PMID: 37701135 PMCID: PMC10494768 DOI: 10.3748/wjg.v29.i32.4831] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/14/2023] [Accepted: 08/07/2023] [Indexed: 08/25/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) causes significant global disease burden and is a leading cause of mortality. NAFLD induces a myriad of aberrant changes in hepatocytes at both the cellular and molecular level. Although the disease spectrum of NAFLD is widely recognised, the precise triggers for disease progression are still to be fully elucidated. Furthermore, the propagation to cirrhosis is poorly understood. Whilst some progress in terms of treatment options have been explored, an incomplete understanding of the hepatic cellular and molecular alterations limits their clinical utility. We have therefore reviewed some of the key pathways responsible for the pathogenesis of NAFLD such as innate and adaptative immunity, lipotoxicity and fibrogenesis, and highlighted current trials and treatment options for NAFLD patients.
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Affiliation(s)
- Lucy Petagine
- Centre for Nutraceuticals, School of Life Sciences, University of Westminster, London W1W6UW, United Kingdom
| | - Mohammed Gulrez Zariwala
- Centre for Nutraceuticals, School of Life Sciences, University of Westminster, London W1W6UW, United Kingdom
| | - Vinood B Patel
- Centre for Nutraceuticals, School of Life Sciences, University of Westminster, London W1W6UW, United Kingdom
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9
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Maldonado FHR, Mega PF, Germano CW, Dias LLC, Callejas GH, Gestic MA, Utrini MP, Chaim FDM, Callejas-Neto F, Chaim EA, Cazzo E. Impact of pre-operative weight loss on non-alcoholic fatty liver disease histopathology and insulin resistance in individuals undergoing bariatric surgery: a propensity matched cross-sectional comparison. SAO PAULO MED J 2023; 142:e2022663. [PMID: 37311134 DOI: 10.1590/1516-3180.2022.0663.r1.24042023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 04/24/2023] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND The effect of weight loss (WL) on histopathological aspects of non-alcoholic fatty liver disease (NAFLD) may provide further insights into the dynamics of hepatic recovery after WL. OBJECTIVE To analyze the effects of pre-operative WL on insulin resistance- and NAFLD-related histology in individuals undergoing bariatric surgery (BS) with or without pre-operative WL. DESIGN AND SETTING A matched cross-sectional study was conducted at a public university hospital and a private clinic in Campinas, Brazil. METHODS An analytical, observational, cross-sectional study was conducted using prospectively collected databases of individuals who underwent BS and liver biopsy at either a public tertiary university hospital (with pre-operative WL) or a private clinic (without pre-operative WL). Random electronic matching by gender, age, and body mass index (BMI) was performed and two paired groups of 24 individuals each were selected. RESULTS Of the 48 participants, 75% were female. The mean age was 37.4 ± 9.6. The mean BMI was 38.9 ± 2.6 kg/m2. Fibrosis was the most common histopathological abnormality (91.7%). Glucose was significantly lower in the WL group (92 ± 19.1 versus 111.8 ± 35.4 mg/dL; P = 0.02). Significantly lower frequencies of macrovesicular steatosis (58.3% versus 95.8%; P = 0.004), microvesicular steatosis (12.5% versus 87.5%; P < 0.001), and portal inflammation (50% versus 87.5%; P = 0.011) were observed in the WL group. CONCLUSION Pre-operative WL was significantly associated with lower frequencies of macro- and mi- crovesicular steatosis, portal inflammation, and lower glycemia, indicating an association between the recent trajectory of body weight and histological aspects of NAFLD.
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Affiliation(s)
| | - Paulo Ferreira Mega
- MD. Resident Physician, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Carlos Wustemberg Germano
- MD. Resident Physician, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Luana Leite Castilho Dias
- BM. Undergraduate Student, Faculty of Medicine, Pontíficia Universidade Católica de Campinas (PUCCAMP), Campinas (SP), Brazil
| | - Guilherme Hoverter Callejas
- MD, MSc. Resident Physician, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Martinho Antonio Gestic
- MD, MSc. Assistant Lecturer, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Murillo Pimentel Utrini
- MD. Assistant Lecturer, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Felipe David Mendonça Chaim
- MD, PhD. Assistant Lecturer, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Francisco Callejas-Neto
- MD, MSc. Assistant Professor, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Elinton Adami Chaim
- MD, PhD. Full Professor, Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
| | - Everton Cazzo
- MD, PhD. Associate Professor Department of Surgery, Universidade Estadual de Campinas (UNICAMP), Campinas (SP), Brazil
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10
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Richter MM, Svane MS, Kristiansen VB, Holst JJ, Madsbad S, Bojsen-Møller KN. Postprandial secretion of follistatin after gastric bypass surgery and sleeve gastrectomy. Peptides 2023; 163:170978. [PMID: 36842630 DOI: 10.1016/j.peptides.2023.170978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/14/2023] [Accepted: 02/23/2023] [Indexed: 02/28/2023]
Abstract
Follistatin is secreted from the liver and may regulate muscle growth and insulin sensitivity. Protein intake stimulates follistatin secretion, which may be mediated by increased glucagon in the context of low insulin concentrations. We investigated circulating follistatin after mixed-meals in two cohorts of patients who were part of previously published studies and had undergone bariatric surgery with either simultaneous assessment of amino acid absorption or administration of the GLP-1 receptor antagonist exendin-(9-39), which increased glucagon concentrations and impaired insulin secretion. Study 1 comprised obese matched subjects with previous Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy (SG) surgery and unoperated controls who underwent 6-hour mixed-meal tests with intravenous and oral tracers including intrinsically labelled caseinate in the meal. Study 2 comprised obese subjects with previous RYGB who underwent two 5-hour mixed-meal tests with concomitant exendin-(9-39) or saline infusion. In study 1, the secretion of follistatin as well as the amino acid absorption was accelerated after RYGB compared with SG and controls, but the glucagon-to-C-peptide ratios did not differ between the groups. In study 2, exendin-(9-39) administration increased postprandial glucagon concentrations and lowered insulin secretion, whereas the concentration of follistatin was unchanged. In conclusion, postprandial follistatin secretion is accelerated in patients after RYGB which might be explained by an accelerated protein absorption rate rather than the glucagon-to-insulin ratio.
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Affiliation(s)
| | - Maria S Svane
- Department of Endocrinology, Hvidovre Hospital, Hvidovre, Denmark; Department of Gastrointestinal Surgery, Hvidovre Hospital, Hvidovre, Denmark
| | - Viggo B Kristiansen
- Department of Gastrointestinal Surgery, Hvidovre Hospital, Hvidovre, Denmark
| | - Jens J Holst
- Novo Nordic Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sten Madsbad
- Department of Endocrinology, Hvidovre Hospital, Hvidovre, Denmark
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11
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Yeoh A, Wong R, Singal AK. The Role Bariatric Surgery and Endobariatric Therapies in Nonalcoholic Steatohepatitis. Clin Liver Dis 2023; 27:413-427. [PMID: 37024216 DOI: 10.1016/j.cld.2023.01.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. Disease spectrum varies from steatosis, steatohepatitis, fibrosis, cirrhosis, and hepatocellular carcinoma. Currently, there are no approved medical therapies, and weight loss through lifestyle modifications remains a mainstay of therapy. Bariatric surgery is the most effective therapy for weight loss and has been shown to improve liver histology. Recently, endoscopic bariatric metabolic therapies have also emerged as effective treatments for patients with obesity and NAFLD. This review summarizes the role of bariatric surgery and endoscopic therapies in the management of patients with NAFLD.
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Affiliation(s)
- Aaron Yeoh
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Robert Wong
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Palo Alto, CA, USA; Gastroenterology Section, Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA, USA
| | - Ashwani K Singal
- University of South Dakota Sanford School of Medicine; Avera Medical Group Liver Disease and Transplant Institute, Avera McKennan University Hospital, Clinical Research Affairs Avera Transplant Institute, 1315 South Cliff Avenue, Sioux Falls, SD 57105, USA; VA Medical Center, Sioux Falls, SD, USA.
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12
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Patel AH, Peddu D, Amin S, Elsaid MI, Minacapelli CD, Chandler TM, Catalano C, Rustgi VK. Nonalcoholic Fatty Liver Disease in Lean/Nonobese and Obese Individuals: A Comprehensive Review on Prevalence, Pathogenesis, Clinical Outcomes, and Treatment. J Clin Transl Hepatol 2023; 11:502-515. [PMID: 36643037 PMCID: PMC9817050 DOI: 10.14218/jcth.2022.00204] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/09/2022] [Accepted: 08/12/2022] [Indexed: 12/24/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common liver disease worldwide, with an estimated prevalence of 25% globally. NAFLD is closely associated with metabolic syndrome, which are both becoming increasingly more common with increasing rates of insulin resistance, dyslipidemia, and hypertension. Although NAFLD is strongly associated with obesity, lean or nonobese NAFLD is a relatively new phenotype and occurs in patients without increased waist circumference and with or without visceral fat. Currently, there is limited literature comparing and illustrating the differences between lean/nonobese and obese NAFLD patients with regard to risk factors, pathophysiology, and clinical outcomes. In this review, we aim to define and further delineate different phenotypes of NAFLD and present a comprehensive review on the prevalence, incidence, risk factors, genetic predisposition, and pathophysiology. Furthermore, we discuss and compare the clinical outcomes, such as insulin resistance, dyslipidemia, hypertension, coronary artery disease, mortality, and progression to nonalcoholic steatohepatitis, among lean/nonobese and obese NAFLD patients. Finally, we summarize the most up to date current management of NAFLD, including lifestyle interventions, pharmacologic therapies, and surgical options.
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Affiliation(s)
- Ankoor H. Patel
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Dhiraj Peddu
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Sahil Amin
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Mohamed I. Elsaid
- Department of Biomedical Informatics, College of Medicine, The Ohio State University, Columbus, OH, USA,Secondary Data Core, Center for Biostatistics, College of Medicine, The Ohio State University, Columbus, OH, USA
| | - Carlos D. Minacapelli
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Toni-Marie Chandler
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Carolyn Catalano
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Vinod K. Rustgi
- Department of Medicine, Division of Gastroenterology and Hepatology, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Center for Liver Diseases and Masses, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ, USA,Correspondence to: Vinod K. Rustgi, Rutgers Robert Wood Johnson Medical School, 1 Robert Wood Johnson Place, Medical Education Building, Rm # 466, New Brunswick, NJ 08901, USA. ORCID: https://orcid.org/0000-0002-4105-5783. Tel: +1-301-801-5814, Fax: +1-723-235-5537, E-mail:
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13
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Radu F, Potcovaru CG, Salmen T, Filip PV, Pop C, Fierbințeanu-Braticievici C. The Link between NAFLD and Metabolic Syndrome. Diagnostics (Basel) 2023; 13:diagnostics13040614. [PMID: 36832102 PMCID: PMC9955701 DOI: 10.3390/diagnostics13040614] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Metabolic syndrome (MetS) is characterized by an association of cardiovascular and diabetes mellitus type 2 risk factors. Although the definition of MetS slightly differs depending on the society that described it, its central diagnostic criteria include impaired fasting glucose, low HDL-cholesterol, elevated triglycerides levels and high blood pressure. Insulin resistance (IR) is believed to be the main cause of MetS and is connected to the level of visceral or intra-abdominal adipose tissue, which could be assessed either by calculating body mass index or by measuring waist circumference. Most recent studies revealed that IR may also be present in non-obese patients, and considered visceral adiposity to be the main effector of MetS' pathology. Visceral adiposity is strongly linked with hepatic fatty infiltration also known as non-alcoholic fatty liver disease (NAFLD), therefore, the level of fatty acids in the hepatic parenchyma is indirectly linked with MetS, being both a cause and a consequence of this syndrome. Taking into consideration the present pandemic of obesity and its tendency to drift towards a progressively earlier onset due to the Western lifestyle, it leads to an increased NAFLD incidence. Novel therapeutic resources are lifestyle intervention with physical activity, Mediterranean diet, or therapeutic surgical respective metabolic and bariatric surgery or drugs such as SGLT-2i, GLP-1 Ra or vitamin E. NAFLD early diagnosis is important due to its easily available diagnostic tools such as non-invasive tools: clinical and laboratory variables (serum biomarkers): AST to platelet ratio index, fibrosis-4, NAFLD Fibrosis Score, BARD Score, fibro test, enhanced liver fibrosis; imaging-based biomarkers: Controlled attenuation parameter, magnetic resonance imaging proton-density fat fraction, transient elastography (TE) or vibration controlled TE, acoustic radiation force impulse imaging, shear wave elastography, magnetic resonance elastography; and the possibility to prevent its complications, respectively, fibrosis, hepato-cellular carcinoma or liver cirrhosis which can develop into end-stage liver disease.
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Affiliation(s)
- Fabiana Radu
- Doctoral School, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Claudia-Gabriela Potcovaru
- Doctoral School, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Correspondence:
| | - Teodor Salmen
- Doctoral School, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania
| | - Petruța Violeta Filip
- Department of Gastroenterology and Internal Medicine, Clinical Emergency University Hospital, 050098 Bucharest, Romania
| | - Corina Pop
- Department of Gastroenterology and Internal Medicine, Clinical Emergency University Hospital, 050098 Bucharest, Romania
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14
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Geerts A, Lefere S. Bariatric surgery for non-alcoholic fatty liver disease: Indications and post-operative management. Clin Mol Hepatol 2023; 29:S276-S285. [PMID: 36545709 PMCID: PMC10029945 DOI: 10.3350/cmh.2022.0373] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
The prevalence of obesity and metabolic consequences such as nonalcoholic fatty liver diseases (NAFLD) has become a crucial health problem. Lifestyle modifications, especially weight loss, effectively reduces liver injury in NAFLD patients. However, adherence to lifestyle changes is very low in the clinical setting. Bariatric surgery can improve metabolic components and cause long-term weight loss. Therefore, bariatric surgery could serve as an attractive treatment option for NAFLD patients. This review integrates data about the benefits of bariatric surgery on NAFLD but also describes the potential pitfalls.
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Affiliation(s)
- Anja Geerts
- Liver Research Center Ghent, Ghent University, Ghent, Belgium
- Hepatology Research Unit, Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
| | - Sander Lefere
- Hepatology Research Unit, Department of Internal Medicine and Pediatrics, Ghent University, Ghent, Belgium
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15
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Lautenbach A, Wernecke M, Mann O, Wagner J, Wolter S, Stoll F, Aberle J. Low-Grade Hepatic Steatosis Is Associated with Long-term Remission of Type 2 Diabetes Independent of Type of Bariatric-Metabolic Surgery. Obes Surg 2023; 33:530-538. [PMID: 36508157 PMCID: PMC9889466 DOI: 10.1007/s11695-022-06406-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Bariatric-metabolic surgery (BS) decreases the grade of steatosis, hepatic inflammation, and fibrosis in patients with severe obesity and non-alcoholic fatty liver disease (NAFLD). Mechanisms include substantial weight loss, but also simultaneous effects on glucose homeostasis. Therefore, we aimed to investigate the association between NAFLD and remission of type 2 diabetes (T2D) up to 8 years following different types of BS. METHODS In a retrospective cohort study including 107 patients with obesity and T2D at baseline, the association between biopsy-proven NAFLD defined as steatosis in > 5% of hepatocytes at the time of surgery and T2D remission up to 8 years following different surgical procedures was investigated. Univariate regression analysis was used to examine the association between NAFLD and remission of T2D. RESULTS Long-term remission of T2D was present in 56% of patients (n = 60). The presence of low-grade liver steatosis (grade 1) was associated with remission of T2D. Patients with a liver steatosis score ≥ 2 showed higher HbA1c levels at baseline. There were no significant differences in preoperative presence of lobular inflammation, hepatocyte ballooning, or fibrosis between patients who achieved T2D remission compared with those with no remission. Type of surgery did not affect remission of T2D. CONCLUSION Our results suggest that the presence of low-grade liver steatosis is associated with remission of T2D following sleeve gastrectomy (SG) and Roux-en-Y gastric bypass (RYGB). Therefore, BS should be considered at an early NAFLD stage in patients with T2D.
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Affiliation(s)
- Anne Lautenbach
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany.
| | - Marie Wernecke
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Oliver Mann
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Jonas Wagner
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Stefan Wolter
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Fabian Stoll
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Jens Aberle
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
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16
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Tontikidou C, Makri ES, Evripidou K, Goulis DG, Goulas A, Polyzos SA. Circulating adiponectin in patients with nonalcoholic fatty liver disease-related liver fibrosis: A systematic review and a meta-analysis. J Gastroenterol Hepatol 2022; 37:1853-1864. [PMID: 35748302 DOI: 10.1111/jgh.15926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/28/2022] [Accepted: 06/19/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND AIM There are conflicting data on adiponectin concentrations in nonalcoholic fatty liver disease (NAFLD). The main aim was to compare circulating total adiponectin concentrations in NAFLD patients with versus without liver fibrosis. METHODS A systematic search was performed in PubMed, Scopus, and Cochrane Library. Twenty-two studies comprising 1753 biopsy-proven NAFLD individuals (1290 with and 463 without fibrosis) were included in the meta-analysis. RESULTS There was no difference in adiponectin concentration between NAFLD patients with versus without fibrosis (standardized mean difference [SMD]: -0.15; 95% confidence interval [95% CI]: -0.35 to 0.05). Heterogeneity was moderate among studies (Ι2 : 60%, P < 0.001); no risk of publication bias was observed (Egger's test; P = 0.37). The sensitivity analysis, performed after the exclusion of studies with (i) children/adolescents and morbidly obese patients (n = 3) and (ii) adiponectin measurement with other methods than enzyme-linked immunosorbent assay (ELISA) (n = 9), revealed significantly lower adiponectin concentrations in NAFLD patients with fibrosis (i) SMD: -0.23, 95% CI: -0.41 to -0.04; (ii) SMD: -0.30, 95% CI: -0.55 to -0.04, respectively). Meta-regression analysis revealed no significant association of adiponectin SMD with age, alanine aminotransferase, aspartate aminotransferase, γ-glutamyl-transferase, homeostasis model assessment insulin resistance and the proportion of men. CONCLUSIONS Overall, patients with NAFLD and fibrosis had similar adiponectin concentrations with patients with NAFLD without fibrosis. However, adiponectin concentration was lower in NAFLD patients with fibrosis than those without fibrosis within the adult patients without morbid obesity and in studies in which adiponectin was measured with the same method (ELISA).
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Affiliation(s)
- Christina Tontikidou
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evangelia S Makri
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kleo Evripidou
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitrios G Goulis
- Department of Endocrinology and Reproduction, First Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Antonis Goulas
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stergios A Polyzos
- First Laboratory of Pharmacology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
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17
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Bellini MI, Urciuoli I, Del Gaudio G, Polti G, Iannetti G, Gangitano E, Lori E, Lubrano C, Cantisani V, Sorrenti S, D’Andrea V. Nonalcoholic fatty liver disease and diabetes. World J Diabetes 2022; 13:668-682. [PMID: 36188142 PMCID: PMC9521438 DOI: 10.4239/wjd.v13.i9.668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/03/2022] [Accepted: 08/05/2022] [Indexed: 02/05/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease in the world and represents a clinical-histopathologic entity where the steatosis component may vary in degree and may or may not have fibrotic progression. The key concept of NAFLD pathogenesis is excessive triglyceride hepatic accumulation because of an imbalance between free fatty acid influx and efflux. Strong epidemiological, biochemical, and therapeutic evidence supports the premise that the primary pathophysiological derangement in most patients with NAFLD is insulin resistance; thus the association between diabetes and NAFLD is widely recognized in the literature. Since NAFLD is the hepatic manifestation of a metabolic disease, it is also associated with a higher cardio-vascular risk. Conventional B-mode ultrasound is widely adopted as a first-line imaging modality for hepatic steatosis, although magnetic resonance imaging represents the gold standard noninvasive modality for quantifying the amount of fat in these patients. Treatment of NAFLD patients depends on the disease severity, ranging from a more benign condition of nonalcoholic fatty liver to nonalcoholic steatohepatitis. Abstinence from alcohol, a Mediterranean diet, and modification of risk factors are recommended for patients suffering from NAFLD to avoid major cardiovascular events, as per all diabetic patients. In addition, weight loss induced by bariatric surgery seems to also be effective in improving liver features, together with the benefits for diabetes control or resolution, dyslipidemia, and hypertension. Finally, liver transplantation represents the ultimate treatment for severe nonalcoholic fatty liver disease and is growing rapidly as a main indication in Western countries. This review offers a comprehensive multidisciplinary approach to NAFLD, highlighting its connection with diabetes.
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Affiliation(s)
- Maria Irene Bellini
- Department of Surgical Sciences, Sapienza University of Rome, Rome 00161, Italy
| | - Irene Urciuoli
- Department of Surgical Sciences, Sapienza University of Rome, Rome 00161, Italy
| | - Giovanni Del Gaudio
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University of Rome, Rome 00161, Italy
| | - Giorgia Polti
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University of Rome, Rome 00161, Italy
| | - Giovanni Iannetti
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University of Rome, Rome 00161, Italy
| | - Elena Gangitano
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, Sapienza University of Rome, Rome 00161, Italy
| | - Eleonora Lori
- Department of Surgical Sciences, Sapienza University of Rome, Rome 00161, Italy
| | - Carla Lubrano
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, Sapienza University of Rome, Rome 00161, Italy
| | - Vito Cantisani
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University of Rome, Rome 00161, Italy
| | - Salvatore Sorrenti
- Department of Surgical Sciences, Sapienza University of Rome, Rome 00161, Italy
| | - Vito D’Andrea
- Department of Surgical Sciences, Sapienza University of Rome, Rome 00161, Italy
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18
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Zunica ERM, Heintz EC, Axelrod CL, Kirwan JP. Obesity Management in the Primary Prevention of Hepatocellular Carcinoma. Cancers (Basel) 2022; 14:cancers14164051. [PMID: 36011044 PMCID: PMC9406638 DOI: 10.3390/cancers14164051] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/16/2022] [Accepted: 08/20/2022] [Indexed: 11/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most frequent primary hepatic malignancy and a leading cause of cancer-related death globally. HCC is associated with an indolent clinical presentation, resulting in frequent advanced stage diagnoses where surgical resection or transplant therapies are not an option and medical therapies are largely ineffective at improving survival. As such, there is a critical need to identify and enhance primary prevention strategies to mitigate HCC-related morbidity and mortality. Obesity is an independent risk factor for the onset and progression of HCC. Furthermore, obesity is a leading cause of nonalcoholic steatohepatitis (NASH), the fasting growing etiological factor of HCC. Herein, we review evolving clinical and mechanistic associations between obesity and hepatocarcinogenesis with an emphasis on the therapeutic efficacy of prevailing lifestyle/behavioral, medical, and surgical treatment strategies for weight reduction and NASH reversal.
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Affiliation(s)
| | | | | | - John P. Kirwan
- Correspondence: (C.L.A.); (J.P.K.); Tel.: +1-225-763-2513 (J.P.K.)
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19
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Moon SB, Hwang SJ, Baker S, Kim M, Sasse K, Koh SD, Sanders KM, Ward SM. Changes in interstitial cells and gastric excitability in a mouse model of sleeve gastrectomy. PLoS One 2022; 17:e0269909. [PMID: 35737727 PMCID: PMC9223402 DOI: 10.1371/journal.pone.0269909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/31/2022] [Indexed: 11/18/2022] Open
Abstract
Obesity is a critical risk factor of several life-threatening diseases and the prevalence in adults has dramatically increased over the past ten years. In the USA the age-adjusted prevalence of obesity in adults was 42.4%, i.e., with a body mass index (BMI, weight (kg)/height (m)2) that exceeds 30 kg/m2. Obese individuals are at the higher risk of obesity-related diseases, co-morbid conditions, lower quality of life, and increased mortality more than those in the normal BMI range i.e., 18.5–24.9 kg/m2. Surgical treatment continues to be the most efficient and scientifically successful treatment for obese patients. Sleeve gastrectomy or vertical sleeve gastrectomy (VSG) is a relatively new gastric procedure to reduce body weight but is now the most popular bariatric operation. To date there have been few studies examining the changes in the cellular components and pacemaker activity that occur in the gastric wall following VSG and whether normal gastric activity recovers following VSG. In the present study we used a murine model to investigate the chronological changes of gastric excitability including electrophysiological, molecular and morphological changes in the gastric musculature following VSG. There is a significant disruption in specialized interstitial cells of Cajal in the gastric antrum following sleeve gastrectomy. This is associated with a loss of gastric pacemaker activity and post-junctional neuroeffector responses. Over a 4-month recovery period there was a gradual return in interstitial cells of Cajal networks, pacemaker activity and neural responses. These data describe for the first time the changes in gastric interstitial cells of Cajal networks, pacemaker activity and neuroeffector responses and the time-dependent recovery of ICC networks and normalization of motor activity and neural responses following VSG.
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Affiliation(s)
- Suk Bae Moon
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Sung Jin Hwang
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Sal Baker
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Minkyung Kim
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Kent Sasse
- Sasse Surgical Associates, Reno, Nevada, United States of America
| | - Sang Don Koh
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Kenton M. Sanders
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
| | - Sean M. Ward
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, Nevada, United States of America
- * E-mail:
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20
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Influence of NAFLD and bariatric surgery on hepatic and adipose tissue mitochondrial biogenesis and respiration. Nat Commun 2022; 13:2931. [PMID: 35614135 PMCID: PMC9132900 DOI: 10.1038/s41467-022-30629-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/05/2022] [Indexed: 12/12/2022] Open
Abstract
Impaired mitochondrial oxidative phosphorylation (OXPHOS) in liver tissue has been hypothesised to contribute to the development of nonalcoholic steatohepatitis in patients with nonalcoholic fatty liver disease (NAFLD). It is unknown whether OXPHOS capacities in human visceral (VAT) and subcutaneous adipose tissue (SAT) associate with NAFLD severity and how hepatic OXPHOS responds to improvement in NAFLD. In biopsies sampled from 62 patients with obesity undergoing bariatric surgery and nine control subjects without obesity we demonstrate that OXPHOS is reduced in VAT and SAT while increased in the liver in patients with obesity when compared with control subjects without obesity, but this was independent of NAFLD severity. In repeat liver biopsy sampling in 21 patients with obesity 12 months after bariatric surgery we found increased hepatic OXPHOS capacity and mitochondrial DNA/nuclear DNA content compared with baseline. In this work we show that obesity has an opposing association with mitochondrial respiration in adipose- and liver tissue with no overall association with NAFLD severity, however, bariatric surgery increases hepatic OXPHOS and mitochondrial biogenesis. Impaired mitochondrial function in liver tissue may contribute to the pathogenesis and disease progression of nonalcoholic fatty liver disease (NAFLD). Here the authors report that patients with obesity have lower mitochondrial capacity in adipose tissues but higher capacity in the liver, without overall associations to NAFLD severity, and that bariatric surgery increases hepatic mitochondrial respiration and mitochondrial biogenesis.
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21
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Sasaki A, Umemura A, Ishida K, Takahashi N, Nikai H, Nitta H, Takikawa Y, Kakisaka K, Abe T, Nishiya M, Sugai T. The Concept of Indeterminable NASH Inducted by Preoperative Diet and Metabolic Surgery: Analyses of Histopathological and Clinical Features. Biomedicines 2022; 10:biomedicines10020453. [PMID: 35203662 PMCID: PMC8962337 DOI: 10.3390/biomedicines10020453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/20/2022] [Accepted: 02/09/2022] [Indexed: 11/25/2022] Open
Abstract
Practitioners routinely perform intraoperative liver biopsies during laparoscopic sleeve gastrectomy (LSG) to evaluate nonalcoholic fatty liver disease (NAFLD). In some patients, hepatocyte ballooning, inflammation, and fibrosis without steatosis are observed, even in the absence of other etiologies. We call this finding indeterminable nonalcoholic steatohepatitis (Ind-NASH). In this study, we clarified the prevalence, as well as histopathological and clinical features, of Ind-NASH through intraoperative liver biopsy in Japanese patients presenting with severe obesity. We enrolled 63 patients who had undergone LSG and intraoperative liver biopsy. In patients diagnosed with histopathological NASH, we performed protocol liver biopsies at 6 and 12 months after LSG. We statistically analyzed these histopathological findings and clinical parameters and found the prevalence rate of Ind-NASH discovered through intraoperative biopsy to be 15.9%. Protocol liver biopsy also revealed that Ind-NASH was an intermediate condition between NASH and normal liver. The clinical features of patients with Ind-NASH are a higher body weight compared to NASH (134.9 kg vs. 114.7 kg; p = 0.0245), stronger insulin resistance compared to nonalcoholic fatty liver (homeostasis model assessment–insulin resistance: 7.1 vs. 4.9; p = 0.0188), and mild liver dysfunction compared to NASH. Patients with Ind-NASH observed positive weight-loss effects from a preoperative diet compared to the postoperative course (percentage total weight loss: 32.0% vs. 26.7%; p < 0.0001). Patients with Ind-NASH may also be good candidates for metabolic surgery owing to their good treatment response; therefore, efforts should be made by specialists in the near future to deeply discuss and define Ind-NASH.
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Affiliation(s)
- Akira Sasaki
- Department of Surgery, Iwate Medical University, Iwate 028-3695, Japan; (A.U.); (N.T.); (H.N.); (H.N.)
- Correspondence: ; Tel.: +81-19-6137111
| | - Akira Umemura
- Department of Surgery, Iwate Medical University, Iwate 028-3695, Japan; (A.U.); (N.T.); (H.N.); (H.N.)
| | - Kazuyuki Ishida
- Department of Diagnostic Pathology, Dokkyo Medical University, Tochigi 321-0293, Japan;
| | - Naoto Takahashi
- Department of Surgery, Iwate Medical University, Iwate 028-3695, Japan; (A.U.); (N.T.); (H.N.); (H.N.)
| | - Haruka Nikai
- Department of Surgery, Iwate Medical University, Iwate 028-3695, Japan; (A.U.); (N.T.); (H.N.); (H.N.)
| | - Hiroyuki Nitta
- Department of Surgery, Iwate Medical University, Iwate 028-3695, Japan; (A.U.); (N.T.); (H.N.); (H.N.)
| | - Yasuhiro Takikawa
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University, Iwate 028-3695, Japan; (Y.T.); (K.K.); (T.A.)
| | - Keisuke Kakisaka
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University, Iwate 028-3695, Japan; (Y.T.); (K.K.); (T.A.)
| | - Tamami Abe
- Division of Hepatology, Department of Internal Medicine, Iwate Medical University, Iwate 028-3695, Japan; (Y.T.); (K.K.); (T.A.)
| | - Masao Nishiya
- Department of Pathology, Iwate Medical University, Iwate 028-3695, Japan; (M.N.); (T.S.)
| | - Tamotsu Sugai
- Department of Pathology, Iwate Medical University, Iwate 028-3695, Japan; (M.N.); (T.S.)
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22
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Cariou B. The metabolic triad of non-alcoholic fatty liver disease, visceral adiposity and type 2 diabetes: Implications for treatment. Diabetes Obes Metab 2022; 24 Suppl 2:15-27. [PMID: 35014161 DOI: 10.1111/dom.14651] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 01/06/2022] [Accepted: 01/06/2022] [Indexed: 12/11/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is associated with visceral obesity, insulin resistance, type 2 diabetes (T2D) and has been often considered as the hepatic expression of the metabolic syndrome (MetS). Epidemiological studies highlight a bidirectional relationship of NAFLD with T2D in which NAFLD increases the risk of incident T2D and T2D increases the risk of severe non-alcoholic steatohepatitis (NASH) and liver fibrosis. Regarding the molecular determinants of NAFLD, we specifically focused in this review on adipocyte dysfunction as a key molecular link between visceral adipose tissue, MetS and NAFLD. Notably, the subcutaneous white adipose tissue expandability appears a critical adaptive buffering mechanism to prevent lipotoxicity and its related metabolic complications, such as NAFLD and T2D. There is a clinical challenge to consider therapeutic strategies targeting the metabolic dysfunction common to NASH and T2D pathogenesis. Strategies that promote significant and sustained weight loss (~10% of total body weight) such as metabolic and bariatric surgery or incretin-based therapies (GLP-1 receptor agonists or dual GLP-1/GIP or GLP-1/glucagon receptor co-agonists) are among the most efficient ones. In addition, insulin sensitizers such as PPARγ (pioglitazone) and pan-PPARs agonists (lanifibranor) have shown some beneficial effects on both NASH and liver fibrosis. Since NASH is a complex and multifactorial disease, it is conceivable that targeting different pathways, not only insulin resistance but also inflammation and fibrotic processes, is required to achieve NASH resolution.
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Affiliation(s)
- Bertrand Cariou
- Université de Nantes, Inserm, CNRS, CHU Nantes, l'institut du thorax, Nantes, France
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23
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Głuszyńska P, Lemancewicz D, Dzięcioł JB, Razak Hady H. Non-Alcoholic Fatty Liver Disease (NAFLD) and Bariatric/Metabolic Surgery as Its Treatment Option: A Review. J Clin Med 2021; 10:jcm10245721. [PMID: 34945016 PMCID: PMC8706342 DOI: 10.3390/jcm10245721] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/01/2021] [Accepted: 12/03/2021] [Indexed: 12/19/2022] Open
Abstract
The prevalence of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) has considerably increased over the last years. NAFLD is currently the most common cause of chronic liver disease in the developing world. The diagnosis of NAFLD/NASH is often incidental, as the early-stage of disease is frequently free of symptoms. Most patients recognized with NAFLD have severe obesity and other obesity-related disease such as type 2 diabetes mellitus (T2DM), insulin-resistance, dyslipidemia and hypertension. The only proven method for NAFLD improvement and resolution is weight loss. Bariatric surgery leads to significant and long-term weight loss as well as improvement of coexisting diseases. There is a lot of evidence suggesting that metabolic/bariatric surgery is an effective method of NAFLD treatment that leads to reduction in steatosis, hepatic inflammation and fibrosis. However, there is still a need to perform long-term studies in order to determine the role of bariatric surgery as a treatment option for NAFLD and NASH. This review discusses current evidence about epidemiology, pathogenesis and treatment options for NAFLD including bariatric/metabolic surgery and its effect on improvement and resolution of NAFLD.
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Affiliation(s)
- Paulina Głuszyńska
- Department of General and Endocrine Surgery, Medical University of Bialystok, 15-089 Białystok, Poland;
- Correspondence: ; Tel.: +48-85-831-8279
| | - Dorota Lemancewicz
- Department of Human Anatomy, Medical University of Bialystok, 15-089 Białystok, Poland; (D.L.); (J.B.D.)
| | - Janusz Bogdan Dzięcioł
- Department of Human Anatomy, Medical University of Bialystok, 15-089 Białystok, Poland; (D.L.); (J.B.D.)
| | - Hady Razak Hady
- Department of General and Endocrine Surgery, Medical University of Bialystok, 15-089 Białystok, Poland;
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