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Grenier-Larouche T, Coulter Kwee L, Deleye Y, Leon-Mimila P, Walejko JM, McGarrah RW, Marceau S, Trahan S, Racine C, Carpentier AC, Lusis AJ, Ilkayeva O, Vohl MC, Huertas-Vazquez A, Tchernof A, Shah SH, Newgard CB, White PJ. Altered branched-chain α-keto acid metabolism is a feature of NAFLD in individuals with severe obesity. JCI Insight 2022; 7:159204. [PMID: 35797133 PMCID: PMC9462486 DOI: 10.1172/jci.insight.159204] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 07/06/2022] [Indexed: 11/17/2022] Open
Abstract
Hepatic de novo lipogenesis is influenced by the branched-chain α-keto acid dehydrogenase (BCKDH) kinase (BCKDK). Here, we aimed to determine whether circulating levels of the immediate substrates of BCKDH, the branched-chain α-keto acids (BCKAs), and hepatic BCKDK expression are associated with the presence and severity of nonalcoholic fatty liver disease (NAFLD). Eighty metabolites (3 BCKAs, 14 amino acids, 43 acylcarnitines, 20 ceramides) were quantified in plasma from 288 patients with bariatric surgery with severe obesity and scored liver biopsy samples. Metabolite principal component analysis factors, BCKAs, branched-chain amino acids (BCAAs), and the BCKA/BCAA ratio were tested for associations with steatosis grade and presence of nonalcoholic steatohepatitis (NASH). Of all analytes tested, only the Val-derived BCKA, α-keto-isovalerate, and the BCKA/BCAA ratio were associated with both steatosis grade and NASH. Gene expression analysis in liver samples from 2 independent bariatric surgery cohorts showed that hepatic BCKDK mRNA expression correlates with steatosis, ballooning, and levels of the lipogenic transcription factor SREBP1. Experiments in AML12 hepatocytes showed that SREBP1 inhibition lowered BCKDK mRNA expression. These findings demonstrate that higher plasma levels of BCKA and hepatic expression of BCKDK are features of human NAFLD/NASH and identify SREBP1 as a transcriptional regulator of BCKDK.
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Affiliation(s)
- Thomas Grenier-Larouche
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Lydia Coulter Kwee
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Yann Deleye
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Paola Leon-Mimila
- Department of Medicine/Division of Cardiology, UCLA, Los Angeles, United States of America
| | - Jacquelyn M Walejko
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Robert W McGarrah
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Simon Marceau
- Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Quebec, Canada
| | - Sylvain Trahan
- Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Quebec, Canada
| | - Christine Racine
- Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Quebec, Canada
| | - André C Carpentier
- Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke, Canada
| | - Aldons J Lusis
- Department of Medicine/Division of Cardiology, UCLA, Los Angeles, United States of America
| | - Olga Ilkayeva
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods, Université Laval, Quebec, Canada
| | | | - Andre Tchernof
- Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Quebec, Canada
| | - Svati H Shah
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Christopher B Newgard
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
| | - Phillip J White
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, United States of America
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Faramia J, Hao Z, Mumphrey MB, Townsend RL, Miard S, Carreau AM, Nadeau M, Frisch F, Baraboi ED, Grenier-Larouche T, Noll C, Li M, Biertho L, Marceau S, Hould FS, Lebel S, Morrison CD, Münzberg H, Richard D, Carpentier AC, Tchernof A, Berthoud HR, Picard F. IGFBP-2 partly mediates the early metabolic improvements caused by bariatric surgery. Cell Rep Med 2021; 2:100248. [PMID: 33948578 PMCID: PMC8080239 DOI: 10.1016/j.xcrm.2021.100248] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 12/21/2020] [Accepted: 03/23/2021] [Indexed: 12/21/2022]
Abstract
Insulin-like growth factor-binding protein (IGFBP)-2 is a circulating biomarker of cardiometabolic health. Here, we report that circulating IGFBP-2 concentrations robustly increase after different bariatric procedures in humans, reaching higher levels after biliopancreatic diversion with duodenal switch (BPD-DS) than after Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). This increase is closely associated with insulin sensitization. In mice and rats, BPD-DS and RYGB operations also increase circulating IGFBP-2 levels, which are not affected by SG or caloric restriction. In mice, Igfbp2 deficiency significantly impairs surgery-induced loss in adiposity and early improvement in insulin sensitivity but does not affect long-term enhancement in glucose homeostasis. This study demonstrates that the modulation of circulating IGFBP-2 may play a role in the early improvement of insulin sensitivity and loss of adiposity brought about by bariatric surgery.
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Affiliation(s)
- Justine Faramia
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
| | - Zheng Hao
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | - Michael B. Mumphrey
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | - R. Leigh Townsend
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | | | - Anne-Marie Carreau
- Division of Endocrinology, Department of Medicine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Mélanie Nadeau
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Frédérique Frisch
- Division of Endocrinology, Department of Medicine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Elena-Dana Baraboi
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Thomas Grenier-Larouche
- Division of Endocrinology, Department of Medicine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Christophe Noll
- Division of Endocrinology, Department of Medicine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Meng Li
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
| | - Laurent Biertho
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Simon Marceau
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Frédéric-Simon Hould
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Stéfane Lebel
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Christopher D. Morrison
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | - Heike Münzberg
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | - Denis Richard
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
| | - André C. Carpentier
- Division of Endocrinology, Department of Medicine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - André Tchernof
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
| | - Hans-Rudolf Berthoud
- Neurobiology of Nutrition & Metabolism Department, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA 70808, USA
| | - Frédéric Picard
- Centre de recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Québec, QC, Canada
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada
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3
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Turcotte AF, Grenier-Larouche T, Lacombe J, Carreau AM, Carpentier AC, Mac-Way F, Tchernof A, Richard D, Biertho L, Lebel S, Marceau S, Ferron M, Gagnon C. Association between changes in bioactive osteocalcin and glucose homeostasis after biliopancreatic diversion. Endocrine 2020; 69:526-535. [PMID: 32419080 DOI: 10.1007/s12020-020-02340-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 05/04/2020] [Indexed: 12/30/2022]
Abstract
PURPOSE Bone may regulate glucose homeostasis via uncarboxylated bioactive osteocalcin (ucOCN). This study explored whether changes in ucOCN and bone remodeling are associated with change in glucose homeostasis after biliopancreatic diversion (BPD). METHODS In this secondary exploratory analysis of a 1-year prospective observational study, 16 participants (11 men/5 women; 69% with type 2 diabetes; mean BMI 49.4 kg/m2) were assessed before, 3 days, 3 months and 12 months after BPD. Changes in plasma ucOCN and bone markers (C-terminal telopeptide (CTX), total osteocalcin (OCN)) were correlated with changes in insulin resistance or sensitivity indices (HOMA-IR; adipose tissue insulin resistance index (ADIPO-IR) and insulin sensitivity index (SI) from the hyperinsulinemic-euglycemic clamp), insulin secretion rate (ISR) from the hyperglycemic clamp, and disposition index (DI: SI × ISR) using Spearman correlations before and after adjustment for weight loss. RESULTS ucOCN was unchanged at 3 days but increased dramatically at 3 months (+257%) and 12 months (+498%). Change in ucOCN correlated significantly with change in CTX at 3 months (r = 0.62, p = 0.015) and 12 months (r = 0.64, p = 0.025) before adjustment for weight loss. It also correlated significantly with change in fasting insulin (r = -0.53, p = 0.035), HOMA-IR (r = -0.54, p = 0.033) and SI (r = 0.52, p = 0.041) at 3 days, and ADIPO-IR (r = -0.69, p = 0.003) and HbA1c (r = -0.69, p = 0.005) at 3 months. Change in OCN did not correlate with any glucose homeostasis indices. Results were similar after adjustment for weight loss. CONCLUSION The increase in ucOCN may be associated with the improvement in insulin resistance after BPD, independently of weight loss. These findings need to be confirmed in larger, less heterogeneous populations.
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Affiliation(s)
- Anne-Frédérique Turcotte
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada
- Department of Medicine, Laval University, Québec City, QC, Canada
| | - Thomas Grenier-Larouche
- Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Sherbrooke, QC, Canada
- Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Julie Lacombe
- Institut de recherches cliniques de Montréal, Montreal, QC, Canada
| | - Anne-Marie Carreau
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada
- Department of Medicine, Laval University, Québec City, QC, Canada
| | - André C Carpentier
- Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Sherbrooke, QC, Canada
- Department of Medicine, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Fabrice Mac-Way
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada
- Department of Medicine, Laval University, Québec City, QC, Canada
| | - André Tchernof
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada
- Department of Medicine, Laval University, Québec City, QC, Canada
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada
| | - Denis Richard
- Department of Medicine, Laval University, Québec City, QC, Canada
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada
| | - Laurent Biertho
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada
- Department of Surgery, Laval University, Québec City, QC, Canada
| | - Stefane Lebel
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada
- Department of Surgery, Laval University, Québec City, QC, Canada
| | - Simon Marceau
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada
- Department of Surgery, Laval University, Québec City, QC, Canada
| | - Mathieu Ferron
- Institut de recherches cliniques de Montréal, Montreal, QC, Canada
- Department of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Claudia Gagnon
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada.
- Department of Medicine, Laval University, Québec City, QC, Canada.
- Québec Heart and Lung Institute Research Centre, Québec City, QC, Canada.
- Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC, Canada.
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4
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Turcotte AF, Grenier-Larouche T, Ung RV, Simonyan D, Carreau AM, Carpentier AC, Mac-Way F, Michou L, Tchernof A, Biertho L, Lebel S, Marceau S, Gagnon C. Effects of Biliopancreatic Diversion on Bone Turnover Markers and Association with Hormonal Factors in Patients with Severe Obesity. Obes Surg 2020; 29:990-998. [PMID: 30478790 DOI: 10.1007/s11695-018-3617-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND This study evaluated early and medium-term changes in bone turnover markers, and their associations with weight loss, total bone mineral density (BMD), and hormonal changes after biliopancreatic diversion (BPD). METHODS Ancillary study from a one-year prospective cohort of 16 individuals assessed before, 3 days, 3 and 12 months after BPD. Bone turnover markers (C-terminal telopeptide (CTX), intact osteocalcin (OC), sclerostin, and osteoprotegerin (OPG)) and several hormones were measured at each visit. Total BMD by DXA was assessed at baseline, 3 and 12 months after BPD. Three participants were lost to follow-up. RESULTS CTX increased significantly at 3 days (+ 66%), 3 months (+ 219%), and 12 months (+ 295%). OC decreased at 3 days (- 19%) then increased at 3 months (+ 69%) and 12 months (+ 164%). Change in sclerostin was only significant between 3 days and 3 months (+ 13%), while change in OPG was significant between baseline and 3 days (+ 48%) and baseline and 12 months (+ 45%). CTX increase correlated negatively with weight loss at 3 (r = - 0.63, p = 0.009) and 12 months (r = - 0.58, p = 0.039), and total BMD decrease (r = - 0.67, p = 0.033) at 12 months. Change in insulin and adiponectin correlated with changes in bone turnover markers independently of weight loss. CONCLUSION BPD causes an earlier and greater increase in bone resorption over bone formation markers and a decrease in total BMD. Sclerostin did not increase as expected following extensive weight loss. Changes in insulin and adiponectin seem to play a role in the activation of bone remodeling after BPD.
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Affiliation(s)
- Anne-Frédérique Turcotte
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada
| | - Thomas Grenier-Larouche
- CHU de Sherbrooke Research Centre, Sherbrooke, Canada.,Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
| | - Roth-Visal Ung
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada
| | - David Simonyan
- Clinical and Evaluative Research Platform, CHU de Québec-Université Laval Research Centre, Québec City, QC, Canada
| | - Anne-Marie Carreau
- CHU de Sherbrooke Research Centre, Sherbrooke, Canada.,Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
| | - André C Carpentier
- CHU de Sherbrooke Research Centre, Sherbrooke, Canada.,Department of Medicine, Université de Sherbrooke, Sherbrooke, Canada
| | - Fabrice Mac-Way
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada.,Department of Medicine, Université Laval, Québec City, Canada
| | - Laetitia Michou
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada.,Department of Medicine, Université Laval, Québec City, Canada
| | - André Tchernof
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada.,Department of Medicine, Université Laval, Québec City, Canada.,Québec Heart and Lung Institute Research Centre, Québec City, Canada.,Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC, Canada
| | - Laurent Biertho
- Québec Heart and Lung Institute Research Centre, Québec City, Canada.,Department of Surgery, Université Laval, Québec City, Canada
| | - Stefane Lebel
- Québec Heart and Lung Institute Research Centre, Québec City, Canada.,Department of Surgery, Université Laval, Québec City, Canada
| | - Simon Marceau
- Québec Heart and Lung Institute Research Centre, Québec City, Canada.,Department of Surgery, Université Laval, Québec City, Canada
| | - Claudia Gagnon
- Endocrinology and Nephrology Unit, CHU de Québec Research Centre, 2705, Boulevard Laurier, Québec City, QC, G1V 4G2, Canada. .,Department of Medicine, Université Laval, Québec City, Canada. .,Québec Heart and Lung Institute Research Centre, Québec City, Canada. .,Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC, Canada.
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5
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Lacombe J, Al Rifai O, Loter L, Moran T, Turcotte AF, Grenier-Larouche T, Tchernof A, Biertho L, Carpentier AC, Prud'homme D, Rabasa-Lhoret R, Karsenty G, Gagnon C, Jiang W, Ferron M. Measurement of bioactive osteocalcin in humans using a novel immunoassay reveals association with glucose metabolism and β-cell function. Am J Physiol Endocrinol Metab 2020; 318:E381-E391. [PMID: 31935114 PMCID: PMC7395472 DOI: 10.1152/ajpendo.00321.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Osteocalcin (OCN) is a bone-derived hormone involved in the regulation of glucose metabolism. In serum, OCN exists in carboxylated and uncarboxylated forms (ucOCN), and studies in rodents suggest that ucOCN is the bioactive form of this hormone. Whether this is also the case in humans is unclear, because a reliable assay to measure ucOCN is not available. Here, we established and validated a new immunoassay (ELISA) measuring human ucOCN and used it to determine the level of bioactive OCN in two cohorts of overweight or obese subjects, with or without type 2 diabetes (T2D). The ELISA could specifically detect ucOCN concentrations ranging from 0.037 to 1.8 ng/mL. In a first cohort of overweight or obese postmenopausal women without diabetes (n = 132), ucOCN correlated negatively with fasting glucose (r = -0.18, P = 0.042) and insulin resistance assessed by the homeostatic model assessment of insulin resistance (r = -0.18, P = 0.038) and positively with insulin sensitivity assessed by a hyperinsulinemic-euglycemic clamp (r = 0.18, P = 0.043) or insulin sensitivity index derived from an oral glucose tolerance test (r = 0.26, P = 0.003). In a second cohort of subjects with severe obesity (n = 16), ucOCN was found to be lower in subjects with T2D compared with those without T2D (2.76 ± 0.38 versus 4.52 ± 0.06 ng/mL, P = 0.009) and to negatively correlate with fasting glucose (r = -0.50, P = 0.046) and glycated hemoglobin (r = -0.57, P = 0.021). Moreover, the subjects with ucOCN levels below 3 ng/mL had a reduced insulin secretion rate during a hyperglycemic clamp (P = 0.03). In conclusion, ucOCN measured with this novel and specific assay is inversely associated with insulin resistance and β-cell dysfunction in humans.
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Affiliation(s)
- Julie Lacombe
- Unité de Recherche en Physiologie Moléculaire, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
| | - Omar Al Rifai
- Unité de Recherche en Physiologie Moléculaire, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
- Department of Medicine, Université de Montréal, Québec, Canada
| | | | - Thomas Moran
- Center for Therapeutic Antibody Development, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Anne-Frédérique Turcotte
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Center, Québec City, Québec, Canada
| | - Thomas Grenier-Larouche
- Québec Heart and Lung Institute Research Centre, Québec City, Québec, Canada
- Service d'Endocrinologie, Département de Médecine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - André Tchernof
- Québec Heart and Lung Institute Research Centre, Québec City, Québec, Canada
| | - Laurent Biertho
- Québec Heart and Lung Institute Research Centre, Québec City, Québec, Canada
| | - André C Carpentier
- Service d'Endocrinologie, Département de Médecine, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Denis Prud'homme
- School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
- Institut du Savoir Montfort, Ottawa, Ontario, Canada
| | - Rémi Rabasa-Lhoret
- Département de Nutrition, Université de Montréal, Montréal, Québec, Canada
- Unité de Recherche en Maladies Métaboliques, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
| | - Gerard Karsenty
- Department of Genetics and Development, Columbia University Medical Center, New York, New York
| | - Claudia Gagnon
- Endocrinology and Nephrology Unit, CHU de Québec-Université Laval Research Center, Québec City, Québec, Canada
- Québec Heart and Lung Institute Research Centre, Québec City, Québec, Canada
- Department of Medicine, Université Laval, Québec City, Québec, Canada
| | | | - Mathieu Ferron
- Unité de Recherche en Physiologie Moléculaire, Institut de Recherches Cliniques de Montréal, Montréal, Québec, Canada
- Department of Medicine, Université de Montréal, Québec, Canada
- Department of Medicine, Division of Experimental Medicine, McGill University, Montréal, Québec, Canada
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6
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Bourgeois R, Piché ME, Auclair A, Grenier-Larouche T, Mitchell PL, Poirier P, Biertho L, Marceau S, Hould FS, Biron S, Lebel S, Lescelleur O, Julien F, Martin J, Tchernof A, Mathieu P, Carpentier AC, Arsenault BJ. Acute and chronic effect of bariatric surgery on circulating autotaxin levels. Physiol Rep 2019; 7:e14004. [PMID: 30821134 PMCID: PMC6395307 DOI: 10.14814/phy2.14004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 01/02/2023] Open
Abstract
Autotaxin (ATX), an adipose tissue-derived lysophospholipase, has been involved in the pathophysiology of cardiometabolic diseases. The impact of bariatric surgery on circulating ATX levels is unknown. We examined the short- (24 h, 5 days) and longer-term (6 and 12 months) impact of bariatric surgery; as well as the short-term effect of caloric restriction (CR) on plasma ATX levels in patients with severe obesity. We measured ATX levels in 69 men and women (mean age: 41 ± 11 years, body mass index: 49.8 ± 7.1 kg/m2 ), before and after biliopancreatic diversion with duodenal switch surgery (BPD-DS) as well as in a control group (patients with severe obesity without surgery; n = 34). We also measured ATX levels in seven patients with severe obesity and type 2 diabetes who underwent a 3-day CR protocol before their BPD-DS. At baseline, ATX levels were positively associated with body mass index, fat mass, insulin resistance (HOMA-IR) as well as insulin and leptin levels and negatively with fat-free mass. ATX concentrations decreased 26.2% at 24 h after BPD-DS (342.9 ± 152.3 pg/mL to 253.2 ± 68.9 pg/mL, P < 0.0001) and by 16.4% at 12 months after BPD-DS (342.9 ± 152.3 pg/mL to 286.8 ± 182.6 pg/mL, P = 0.04). ATX concentrations were unchanged during follow-up in the control group (P = 0.4), and not influenced by short-term CR. In patients with severe obesity, bariatric surgery induced a rapid and sustained decrease in plasma ATX levels. Acute changes in ATX may not be explained by bariatric surgery-induced CR.
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Affiliation(s)
- Raphaëlle Bourgeois
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
| | - Marie-Eve Piché
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
| | - Audrey Auclair
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Thomas Grenier-Larouche
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Patricia L Mitchell
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Paul Poirier
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Faculty of Pharmacy, Université Laval, Québec, Canada
| | - Laurent Biertho
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Simon Marceau
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Frédéric-Simon Hould
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Simon Biron
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Stéfane Lebel
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Odette Lescelleur
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - François Julien
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - Julie Martin
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
| | - André Tchernof
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- School of Nutrition, Université Laval, Québec, Canada
| | - Patrick Mathieu
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Canada
| | - Benoit J Arsenault
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Québec, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
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7
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White PJ, McGarrah RW, Grimsrud PA, Tso SC, Yang WH, Haldeman JM, Grenier-Larouche T, An J, Lapworth AL, Astapova I, Hannou SA, George T, Arlotto M, Olson LB, Lai M, Zhang GF, Ilkayeva O, Herman MA, Wynn RM, Chuang DT, Newgard CB. The BCKDH Kinase and Phosphatase Integrate BCAA and Lipid Metabolism via Regulation of ATP-Citrate Lyase. Cell Metab 2018; 27:1281-1293.e7. [PMID: 29779826 PMCID: PMC5990471 DOI: 10.1016/j.cmet.2018.04.015] [Citation(s) in RCA: 193] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 02/27/2018] [Accepted: 04/13/2018] [Indexed: 12/16/2022]
Abstract
Branched-chain amino acids (BCAA) are strongly associated with dysregulated glucose and lipid metabolism, but the underlying mechanisms are poorly understood. We report that inhibition of the kinase (BDK) or overexpression of the phosphatase (PPM1K) that regulates branched-chain ketoacid dehydrogenase (BCKDH), the committed step of BCAA catabolism, lowers circulating BCAA, reduces hepatic steatosis, and improves glucose tolerance in the absence of weight loss in Zucker fatty rats. Phosphoproteomics analysis identified ATP-citrate lyase (ACL) as an alternate substrate of BDK and PPM1K. Hepatic overexpression of BDK increased ACL phosphorylation and activated de novo lipogenesis. BDK and PPM1K transcript levels were increased and repressed, respectively, in response to fructose feeding or expression of the ChREBP-β transcription factor. These studies identify BDK and PPM1K as a ChREBP-regulated node that integrates BCAA and lipid metabolism. Moreover, manipulation of the BDK:PPM1K ratio relieves key metabolic disease phenotypes in a genetic model of severe obesity.
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Affiliation(s)
- Phillip J White
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA
| | - Robert W McGarrah
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA
| | - Paul A Grimsrud
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Shih-Chia Tso
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Wen-Hsuan Yang
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Jonathan M Haldeman
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Thomas Grenier-Larouche
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Jie An
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Amanda L Lapworth
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Inna Astapova
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA
| | - Sarah A Hannou
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Tabitha George
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Michelle Arlotto
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Lyra B Olson
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Michelle Lai
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| | - Guo-Fang Zhang
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA
| | - Olga Ilkayeva
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA
| | - Mark A Herman
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA
| | - R Max Wynn
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - David T Chuang
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Christopher B Newgard
- Sarah W. Stedman Nutrition and Metabolism Center & Duke Molecular Physiology Institute, Duke University Medical Center, 300 North Duke Street, Durham, NC 27701, USA; Departments of Medicine and Pharmacology & Cancer Biology, Durham, NC 27701, USA.
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8
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Grenier-Larouche T, Carreau AM, Geloën A, Frisch F, Biertho L, Marceau S, Lebel S, Hould FS, Richard D, Tchernof A, Carpentier AC. Fatty Acid Metabolic Remodeling During Type 2 Diabetes Remission After Bariatric Surgery. Diabetes 2017; 66:2743-2755. [PMID: 28835473 DOI: 10.2337/db17-0414] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 08/10/2017] [Indexed: 11/13/2022]
Abstract
Hypertrophic remodeling of white adipose tissues is associated with overexposure of lean organs to circulating triglycerides (TGs) and nonesterified fatty acids (NEFAs), ultimately leading to insulin resistance. Bariatric surgery promotes type 2 diabetes (T2D) remission through a succession of weight loss-dependent and -independent mechanisms. However, the longitudinal contribution of adipocyte size reduction and fatty acid metabolic handling remain unknown. Here we show that severely obese participants with T2D display hypertriglyceridemia and excessive systemic lipolysis during intravenous lipid overload. Three days after biliopancreatic diversion with duodenal switch (DS), whole-body glycerol turnover was normalized and associated with lower HOMA-insulin resistance index. A mean excess weight loss of 84% was achieved 12 months after DS. The smaller subcutaneous adipocyte size predicted better glycemic control in T2D. TG disposal and acylcarnitine production during lipid overload, along with muscle insulin sensitivity, improved with weight loss. Nevertheless, systemic NEFA fluxes and NEFA spillover remained similar, suggesting that increased NEFA storage capacity per volume of adipose tissue exactly compensated for the decrease in fat mass during weight loss. In conclusion, T2D remission after DS is mainly associated with greater circulating TG disposal, lower systemic lipolysis, and better fatty acid handling by lean tissues.
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Affiliation(s)
- Thomas Grenier-Larouche
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Anne-Marie Carreau
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Alain Geloën
- University of Lyon, CARMEN INSERM U1060, INSA-Lyon, Villeurbanne, France
| | - Frédérique Frisch
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Laurent Biertho
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Simon Marceau
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Stéfane Lebel
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Frédéric-Simon Hould
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - Denis Richard
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - André Tchernof
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Université Laval, Québec City, Québec, Canada
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, Québec, Canada
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9
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Boyer M, Piché ME, Auclair A, Grenier-Larouche T, Biertho L, Marceau S, Hould FS, Biron S, Lebel S, Lescelleur O, Julien F, Martin J, Tchernof A, Carpentier AC, Poirier P, Arsenault BJ. Acute and Chronic Impact of Bariatric Surgery on Plasma LDL Cholesterol and PCSK9 Levels in Patients With Severe Obesity. J Clin Endocrinol Metab 2017; 102:4023-4030. [PMID: 28938493 DOI: 10.1210/jc.2017-00699] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 08/07/2017] [Indexed: 02/09/2023]
Abstract
CONTEXT Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a key regulator of low-density lipoprotein cholesterol (LDL-C) concentrations. In patients with severe obesity, biliopancreatic diversion with duodenal switch (BPD-DS) surgery induces substantial weight loss and influences lipoprotein metabolism. The effect of BPD-DS on PCSK9 levels is unknown. OBJECTIVES To determine the acute and chronic impact of BPD-DS on PCSK9 levels and whether the acute impact of BPD-DS could be explained by BPD-DS-associated caloric restriction (CR). DESIGN, SETTINGS, AND PARTICIPANTS PCSK9 levels were measured in 20 men and 49 women (age, 41.5 ± 11.1 years) with severe obesity before, 24 hours, 5 days, and 6 and 12 months after BPD-DS and in a comparable control group (n = 31) at baseline and at 6 and 12 months. PCSK9 levels were also measured during 3-day CR in patients (n = 7) with severe obesity and type 2 diabetes. RESULTS PCSK9 levels increased 13.4% after 24 hours (248.7 ± 64.8 to 269.7 ± 63.8 ng/mL; P = 0,02) and decreased 9.5% at 12 months compared with baseline (217.6 ± 43.0 ng/mL; P < 0,0001). LDL-C levels decreased 36.2% after 24 hours (2.6 ± 0.7 to 1.7 ± 0.6 mmol/L; P < 0.0001) and 30% at 12 months compared with baseline (1.7 ± 0.5 mmol/L; P < 0.0001). Compared with baseline levels, PCSK9 levels were lower at day 2 but not at day 1 or 3 after CR. CONCLUSION BPD-DS is associated with acute increases in PCSK9 levels that do not appear to be explained by CR but may be due to an acute response following surgery. BPD-DS induces chronic reductions in both PCSK9 and LDL-C levels.
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Affiliation(s)
- Marjorie Boyer
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Marie-Eve Piché
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Audrey Auclair
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Thomas Grenier-Larouche
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Laurent Biertho
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Simon Marceau
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Frédéric-Simon Hould
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Simon Biron
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Stéfane Lebel
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Odette Lescelleur
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - François Julien
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - Julie Martin
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
| | - André Tchernof
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
- School of Nutrition, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Centre de recherche du CHUS, Université de Sherbrooke, Sherbrooke, Quebec J1H 5N4, Canada
| | - Paul Poirier
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
- Faculty of Pharmacy, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Benoit J Arsenault
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Quebec City, Quebec G1V 4G5, Canada
- Department of Medicine, Faculty of Medicine, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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10
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Michaud A, Grenier-Larouche T, Caron-Dorval D, Marceau S, Biertho L, Simard S, Richard D, Tchernof A, Carpentier AC. Biliopancreatic diversion with duodenal switch leads to better postprandial glucose level and beta cell function than sleeve gastrectomy in individuals with type 2 diabetes very early after surgery. Metabolism 2017; 74:10-21. [PMID: 28764844 DOI: 10.1016/j.metabol.2017.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 06/16/2017] [Accepted: 06/17/2017] [Indexed: 12/29/2022]
Abstract
OBJECTIVE The aim of this study was to compare the short-term effect of sleeve gastrectomy (SG) and biliopancreatic diversion with duodenal switch (DS) in order to determine if exclusion of the upper gastrointestinal tract confers greater metabolic improvement, independent of weight loss. METHODS Standard meals were administered before and on day 3 and 4 after SG to assess insulin sensitivity, β-cell function and gastrointestinal hormone responses in matched normoglycemic (NG) and type 2 diabetes (T2D) participants. A third group of matched T2D participants who underwent DS with the same meal test administered prior to and 3days after surgery was also recruited. RESULTS Despite significant metabolic improvement, T2D participants failed to fully normalize insulin resistance and β-cell dysfunction 3 and 4days after SG. Our results demonstrate the superiority of DS over SG in terms of short-term improvement in postprandial glucose excursion and β-cell function 3days after the surgery, with similar improvement in hepatic insulin sensitivity. CONCLUSION Our findings support the notion that caloric restriction represents an important mechanism to explain the very early anti-diabetic effects observed after bariatric surgery. However, exclusion of the upper gastrointestinal tract also provides further metabolic improvements, possibly mediated by gastrointestinal hormonal responses and altered postprandial glucose absorption.
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Affiliation(s)
- Andréanne Michaud
- Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Thomas Grenier-Larouche
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada; Department of Medicine, Division of Endocrinology, Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Université de Sherbrooke, Québec, Canada
| | - Dominique Caron-Dorval
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada
| | - Simon Marceau
- Department of Surgery, Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Université Laval, Québec, Canada
| | - Laurent Biertho
- Department of Surgery, Institut Universitaire de Cardiologie et de Pneumologie de Quebec, Université Laval, Québec, Canada
| | - Serge Simard
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada
| | - Denis Richard
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada
| | - André Tchernof
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada.
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Centre de recherche du Centre hospitalier universitaire de Sherbrooke, Université de Sherbrooke, Québec, Canada.
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11
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Grenier-Larouche T, Carreau AM, Carpentier AC. Early Metabolic Improvement After Bariatric Surgery: The First Steps Toward Remission of Type 2 Diabetes. Can J Diabetes 2017; 41:418-425. [PMID: 28318939 DOI: 10.1016/j.jcjd.2016.10.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 08/23/2016] [Accepted: 10/24/2016] [Indexed: 02/06/2023]
Abstract
The introduction of bariatric surgery into clinical practice in the 1980s was followed by a relatively long watch-and-wait period before the very rapid accumulation of scientific literature, over the past decade, concerning its clinical effectiveness and safety and its mechanisms of action in the treatment of obesity. These surgical procedures now emerge as the most effective therapeutic modality to induce long-term remission of type 2 diabetes. Recent research has shed light on the potential mechanisms leading to the profound improvement of glucose homeostasis following most bariatric surgery procedures. These mechanisms can be classified as weight loss dependent and independent, both playing sequential and then synergistic antidiabetes roles. Many groups, including our own, have contributed to our understanding of the relative roles of these mechanisms at differing time periods following these procedures. Here we summarize what we currently know about the mechanisms underlying the very rapid, weight loss-independent improvement in glucose homeostasis after bariatric surgery. Beyond its impact in the field of bariatric surgery, this new knowledge about the very rapid in vivo "reverse engineering" of type 2 diabetes actually provides unique insights into the intricate and complex mechanisms linking nutrition and obesity with the development of this disease.
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Affiliation(s)
- Thomas Grenier-Larouche
- Department of Medicine, Division of Endocrinology, Centre de recherche du Centre hospitalier universitaire de Sherbrooke (CHUS), Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Anne-Marie Carreau
- Department of Medicine, Division of Endocrinology, Centre de recherche du Centre hospitalier universitaire de Sherbrooke (CHUS), Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Centre de recherche du Centre hospitalier universitaire de Sherbrooke (CHUS), Université de Sherbrooke, Sherbrooke, Quebec, Canada.
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12
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Carreau AM, Grenier-Larouche T, Biertho L, Tchernof A, Carpentier AC. Effect of Insulin-Resistance, Diabetes and Biliopancreatic Diversion with Duodenal Switch (BDP-DS) on Acylcarnitines (AC) Under Fasting, Post-Prandial, Hyperinsulinemic and Hyperlipidemic Conditions in Severely Obese Patients. Can J Diabetes 2015. [DOI: 10.1016/j.jcjd.2015.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Boulet MM, Chevrier G, Grenier-Larouche T, Pelletier M, Nadeau M, Scarpa J, Prehn C, Marette A, Adamski J, Tchernof A. Alterations of plasma metabolite profiles related to adipose tissue distribution and cardiometabolic risk. Am J Physiol Endocrinol Metab 2015; 309:E736-46. [PMID: 26306599 DOI: 10.1152/ajpendo.00231.2015] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 08/11/2015] [Indexed: 12/17/2022]
Abstract
Metabolomic profiling of obese individuals revealed altered concentrations of many metabolites, especially branched-chain amino acids (BCAA), possibly linked to altered adipose tissue BCAA catabolism. We tested the hypothesis that some features of this metabolite signature relate closely to visceral obesity and concomitant alterations in cardiometabolic risk factors. We also postulated that alterations in BCAA-catabolizing enzymes are predominant in visceral adipose tissue. Fifty-nine women (BMI 20-41 kg/m(2)) undergoing gynecologic surgery were recruited and characterized for overall and regional adiposity, blood metabolite levels using targeted metabolomics, and cardiometabolic risk factors. Adipose samples (visceral and subcutaneous) were obtained and used for gene expression and Western blot analyses. Obese women had significantly higher circulating BCAA and kynurenine/tryptophan (Kyn/Trp) ratio than lean or overweight women (P < 0.01). Principal component analysis confirmed that factors related to AA and the Kyn/Trp ratio were positively associated with BMI, fat mass, visceral or subcutaneous adipose tissue area, and subcutaneous adipocyte size (P ≤ 0.05). AA-related factor was positively associated with HOMA-IR (P ≤ 0.01). Factors reflecting glycerophospholipids and sphingolipids levels were mostly associated with altered blood lipid concentrations (P ≤ 0.05). Glutamate level was the strongest independent predictor of visceral adipose tissue area (r = 0.46, P < 0.001). Obese women had lower expression and protein levels of BCAA-catabolizing enzymes in visceral adipose tissue than overweight or lean women (P ≤ 0.05). We conclude that among metabolites altered in obesity plasma concentrations of BCAA and the Kyn/Trp ratio are closely related to increased adiposity. Alterations in expression and protein levels of BCAA-catabolizing enzymes are predominant in visceral adipose tissue.
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Affiliation(s)
- Marie Michèle Boulet
- Endocrinology and Nephrology, Centre Hospitalier Universitaire de Quebec, Quebec City, Canada; School of Nutrition, Laval University, Quebec City, Canada; Quebec Heart and Lung Institute, Quebec City, Canada
| | | | | | - Mélissa Pelletier
- Endocrinology and Nephrology, Centre Hospitalier Universitaire de Quebec, Quebec City, Canada
| | | | - Julia Scarpa
- Helmholtz Zentrum München, Institute of Experimental Genetics, Genome Analysis Center, Neuherberg, Germany
| | - Cornelia Prehn
- Helmholtz Zentrum München, Institute of Experimental Genetics, Genome Analysis Center, Neuherberg, Germany
| | - André Marette
- Quebec Heart and Lung Institute, Quebec City, Canada
| | - Jerzy Adamski
- Helmholtz Zentrum München, Institute of Experimental Genetics, Genome Analysis Center, Neuherberg, Germany; Lehrstuhl für Experimentelle Genetik, Technische Universität München, Freising-Weihenstephan, Germany; and German Center for Diabetes Research, Neuherberg, Germany
| | - André Tchernof
- Endocrinology and Nephrology, Centre Hospitalier Universitaire de Quebec, Quebec City, Canada; School of Nutrition, Laval University, Quebec City, Canada; Quebec Heart and Lung Institute, Quebec City, Canada;
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14
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Grenier-Larouche T, Galinier A, Casteilla L, Carpentier AC, Tchernof A. Omental adipocyte hypertrophy relates to coenzyme Q10 redox state and lipid peroxidation in obese women. J Lipid Res 2015; 56:1985-92. [PMID: 26239051 DOI: 10.1194/jlr.p058578] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Indexed: 11/20/2022] Open
Abstract
Occurrence of oxidative stress in white adipose tissues contributes to its dysfunction and the development of obesity-related metabolic complications. Coenzyme Q10 (CoQ10) is the single lipophilic antioxidant synthesized in humans and is essential for electron transport during mitochondrial respiration. To understand the role of CoQ10 in adipose tissue physiology and dysfunction, the abundance of the oxidized and reduced (CoQ10red) isoforms of the CoQ10 were quantified in subcutaneous and omental adipose tissues of women covering the full range of BMI (from 21.5 to 53.2 kg/m(2)). Lean women displayed regional variations of CoQ10 redox state between the omental and subcutaneous depot, despite similar total content. Obese women had reduced CoQ10red concentrations in the omental depot, leading to increased CoQ10 redox state and higher levels of lipid hydroperoxide. Women with low omental CoQ10 content had greater visceral and subcutaneous adiposity, increased omental adipocyte diameter, and higher circulating interleukin-6 and C-reactive protein levels and were more insulin resistant. The associations between abdominal obesity-related cardiometabolic risk factors and CoQ10 content in the omental depot were abolished after adjustment for omental adipocyte diameter. This study shows that hypertrophic remodeling of visceral fat closely relates to depletion of CoQ10, lipid peroxidation, and inflammation.
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Affiliation(s)
- Thomas Grenier-Larouche
- Endocrinology and Nephrology Axis, Centre Hospitalier Universitaire de Québec, Québec, Canada Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Québec, Canada
| | - Anne Galinier
- CNRS 5273, UMR STROMALab, Toulouse, France Université de Toulouse, UPS, Toulouse, France INSERM U1031, Toulouse, France EFS Pyrénées-Méditerranée, Toulouse, France
| | - Louis Casteilla
- CNRS 5273, UMR STROMALab, Toulouse, France Université de Toulouse, UPS, Toulouse, France INSERM U1031, Toulouse, France EFS Pyrénées-Méditerranée, Toulouse, France
| | - André C Carpentier
- Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Québec, Canada
| | - André Tchernof
- Endocrinology and Nephrology Axis, Centre Hospitalier Universitaire de Québec, Québec, Canada
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15
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Plourde CÉ, Grenier-Larouche T, Caron-Dorval D, Biron S, Marceau S, Lebel S, Biertho L, Tchernof A, Richard D, Carpentier AC. Biliopancreatic diversion with duodenal switch improves insulin sensitivity and secretion through caloric restriction. Obesity (Silver Spring) 2014; 22:1838-46. [PMID: 24760439 DOI: 10.1002/oby.20771] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 04/07/2014] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To assess the rapid improvement of insulin sensitivity and β-cell function following biliopancreatic diversion with duodenal switch (BPD-DS) and determine the role played by caloric restriction in these changes. METHODS Standard meals were administrated before and on day 3, 4, and 5 after BPD-DS to measure total caloric intake, glucose excursion, insulin sensitivity, and secretion in matched type 2 diabetes and normoglycemic (NG) subjects. In a second set of study, other subjects with type 2 diabetes had the same meal tests prior to and after a 3-day caloric restriction identical to that observed after BPD-DS and then 3 days after actually undergoing BPD-DS. RESULTS Improvement of HOMA-IR occurred at day 3 after BPD-DS in diabetes and after 3 days of caloric restriction. The disposition index (DI) improved rapidly in diabetes after BPD-DS and to a similar extent after caloric restriction. DI was higher and did not change after BPD-DS in NG. Changes in glucagon-like peptide-1, gastric inhibitory peptide, peptide tyrosine tyrosine, ghrelin, and pancreatic polypeptide levels were not associated with modulation of DI in the participants. CONCLUSIONS Caloric restriction is the major mechanism underlying the early improvement of insulin sensitivity and β-cell function after BPD-DS in type 2 diabetes.
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Affiliation(s)
- Charles-Étienne Plourde
- Department of Medicine, Division of Endocrinology, Centre de recherche clinique Étienne-Le Bel, Université de Sherbrooke, Québec, Canada; Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Université Laval, Québec, Canada
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16
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Labbé SM, Noll C, Grenier-Larouche T, Kunach M, Bouffard L, Phoenix S, Guérin B, Baillargeon JP, Langlois MF, Turcotte EE, Carpentier AC. Improved cardiac function and dietary fatty acid metabolism after modest weight loss in subjects with impaired glucose tolerance. Am J Physiol Endocrinol Metab 2014; 306:E1388-96. [PMID: 24760989 DOI: 10.1152/ajpendo.00638.2013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Using a novel positron emission tomography (PET) method with oral administration of 14(R,S)-[¹⁸F]-fluoro-6-thia-heptadecanoic acid (¹⁸FTHA), we recently demonstrated that subjects with impaired glucose tolerance (IGT) display an impairment in cardiac function associated with increased myocardial uptake of dietary fatty acids. Here, we determined whether modest weight loss induced by lifestyle changes might improve these cardiac metabolic and functional abnormalities. Nine participants with IGT, enrolled in a one-year lifestyle intervention trial, were invited to undergo determination of organ-specific postprandial dietary fatty acids partition using the oral ¹⁸FTHA method, and cardiac function and oxidative metabolic index using PET [¹¹C]acetate kinetics with ECG-gated PET ventriculography before and after the intervention. The intervention resulted in significant weight loss and reduction of waist circumference, with reduced postprandial plasma glucose, insulin, and triglycerides excursion. We observed a significant increase in stroke volume, cardiac output, and left ventricular ejection fraction associated with reduced myocardial oxidative metabolic index and fractional dietary fatty acid uptake. Modest weight loss corrects the exaggerated myocardial channeling of dietary fatty acids and improves myocardial energy substrate metabolism and function in IGT subjects.
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Affiliation(s)
- Sébastien M Labbé
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Christophe Noll
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Thomas Grenier-Larouche
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Margaret Kunach
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Lucie Bouffard
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Serge Phoenix
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - Brigitte Guérin
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - Jean-Patrice Baillargeon
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Marie-France Langlois
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
| | - Eric E Turcotte
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - André C Carpentier
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Québec, Canada; and
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17
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Kunach M, Noll C, Labbé SM, Grenier-Larouche T, Bouffard L, Phoenix S, Guérin B, Baillargeon JP, Langlois MF, Turcotte EE, Carpentier AC. Improved Cardiopulmonary Functional Capacity Following a One-Year Lifestyle Intervention Regimen Does Not Explain Improved Postprandial Myocardial Dietary Fatty Acid Metabolism in Patients with Impaired Glucose Tolerance. Can J Diabetes 2014. [DOI: 10.1016/j.jcjd.2014.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Grenier-Larouche T, Labbé SM, Noll C, Richard D, Carpentier AC. Metabolic inflexibility of white and brown adipose tissues in abnormal fatty acid partitioning of type 2 diabetes. Int J Obes Suppl 2012; 2:S37-42. [PMID: 27152152 DOI: 10.1038/ijosup.2012.21] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Type 2 diabetes (T2D) is characterized by a general dysregulation of postprandial energy substrate partitioning. Although classically described in regard to glucose metabolism, it is now evident that metabolic inflexibility of plasma lipid fluxes is also present in T2D. The organ that is most importantly involved in the latter metabolic defect is the white adipose tissue (WAT). Both catecholamine-induced nonesterified fatty acid mobilization and insulin-stimulated storage of meal fatty acids are impaired in many WAT depots of insulin-resistant individuals. Novel molecular imaging techniques now demonstrate that these defects are linked to increased dietary fatty acid fluxes toward lean organs and myocardial dysfunction in humans. Recent findings also demonstrate functional abnormalities of brown adipose tissues in T2D, thus suggesting that a generalized adipose tissue dysregulation of energy storage and dissipation may be at play in the development of lean tissue energy overload and lipotoxicity.
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Affiliation(s)
- T Grenier-Larouche
- Department of Medicine, Division of Endocrinology, Centre Hospitalier Université de Sherbrooke , Sherbrooke, Québec, Canada
| | - S M Labbé
- Department of Medicine, Division of Endocrinology, Centre Hospitalier Université de Sherbrooke , Sherbrooke, Québec, Canada
| | - C Noll
- Department of Medicine, Division of Endocrinology, Centre Hospitalier Université de Sherbrooke , Sherbrooke, Québec, Canada
| | - D Richard
- Centre de recherche de l'Institut de cardiologie et de pneumologie de Québec, Université Laval Québec , Québec City, Québec, Canada
| | - A C Carpentier
- Department of Medicine, Division of Endocrinology, Centre Hospitalier Université de Sherbrooke , Sherbrooke, Québec, Canada
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Labbé SM, Grenier-Larouche T, Noll C, Phoenix S, Guérin B, Turcotte EE, Carpentier AC. Increased myocardial uptake of dietary fatty acids linked to cardiac dysfunction in glucose-intolerant humans. Diabetes 2012; 61:2701-10. [PMID: 23093657 PMCID: PMC3478552 DOI: 10.2337/db11-1805] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impaired cardiac systolic and diastolic function has been observed in preclinical models and in subjects with type 2 diabetes. Using a recently validated positron emission tomography (PET) imaging method with 14(R,S)-[(¹⁸F]-fluoro-6-thia-heptadecanoic acid to quantify organ-specific dietary fatty acid partitioning, we demonstrate in this study that overweight and obese subjects with impaired glucose tolerance (IGT⁺) display significant increase in fractional myocardial dietary fatty acid uptake over the first 6 h postprandial compared with control individuals (IGT⁻). Measured by [¹¹C]acetate with PET, IGT⁺ subjects have a significant increase in myocardial oxidative index. IGT⁺ subjects have significantly reduced left ventricular stroke volume and ejection fraction (LVEF) and tend to display impaired diastolic function, as assessed by PET ventriculography. We demonstrate an inverse relationship between increased myocardial dietary fatty acid partitioning and LVEF. Fractional dietary fatty acid uptake is reduced in subcutaneous abdominal and visceral adipose tissues in IGT⁺ directly associated with central obesity. Fractional dietary fatty acid uptake in skeletal muscles or liver is, however, similar in IGT⁺ versus IGT⁻. The current study demonstrates, for the first time, that excessive myocardial partitioning of dietary fatty acids occurs in prediabetic individuals and is associated with early impairment of left ventricular function and increased myocardial oxidative metabolism.
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Affiliation(s)
- Sébastien M. Labbé
- Department of Medicine, Division of Endocrinology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Thomas Grenier-Larouche
- Department of Medicine, Division of Endocrinology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Christophe Noll
- Department of Medicine, Division of Endocrinology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Serge Phoenix
- Department of Medicine, Division of Endocrinology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Department of Nuclear Medicine and Radiobiology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Brigitte Guérin
- Department of Nuclear Medicine and Radiobiology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Eric E. Turcotte
- Department of Nuclear Medicine and Radiobiology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - André C. Carpentier
- Department of Medicine, Division of Endocrinology, Centre de Recherche Clinique Etienne-LeBel, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Corresponding author: André C. Carpentier,
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Grenier-Larouche T, Labbe SM, Noll C, Carpentier A. Regulation of Non-esterified Fatty Acids Flux by Sodium 4-Phenybutyrate in a Nutritional Model of Type 2 Diabetes. Can J Diabetes 2012. [DOI: 10.1016/j.jcjd.2012.07.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Carpentier AC, Labbé SM, Grenier-Larouche T, Noll C. Abnormal dietary fatty acid metabolic partitioning in insulin resistance and Type 2 diabetes. ACTA ACUST UNITED AC 2011. [DOI: 10.2217/clp.11.60] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Labbé SM, Grenier-Larouche T, Croteau E, Normand-Lauzière F, Frisch F, Ouellet R, Guérin B, Turcotte EE, Carpentier AC. Organ-specific dietary fatty acid uptake in humans using positron emission tomography coupled to computed tomography. Am J Physiol Endocrinol Metab 2011; 300:E445-53. [PMID: 21098737 DOI: 10.1152/ajpendo.00579.2010] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A noninvasive method to determine postprandial fatty acid tissue partition may elucidate the link between excess dietary fat and type 2 diabetes. We hypothesized that the positron-emitting fatty acid analog 14(R,S)-[(18)F]fluoro-6-thia-heptadecanoic acid ((18)FTHA) administered orally during a meal would be incorporated into chylomicron triglycerides, allowing determination of interorgan dietary fatty acid uptake. We administered (18)FTHA orally at the beginning of a standard liquid meal ingested in nine healthy men. There was no significant (18)FTHA uptake in the portal vein and the liver during the 1st hour. Whole body PET/CT acquisition revealed early appearance of (18)FTHA in the distal thoracic duct, reaching a peak at time 240 min. (18)FTHA mean standard uptake value increased progressively in the liver, heart, quadriceps, and subcutaneous and visceral adipose tissues between time 60 and 240 min. Most circulating (18)F activity between time 0 and 360 min was recovered into chylomicron triglycerides. Using Triton WR-1339 treatment in rats that received (18)FTHA by gavage, we confirmed that >90% of this tracer reached the circulation as triglycerides. This novel noninvasive method to determine tissue dietary fatty acid distribution in humans should prove useful in the study of the mechanisms leading to lipotoxicity.
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Affiliation(s)
- Sébastien M Labbé
- Division of Endocrinology, Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
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Labbé SM, Croteau E, Grenier-Larouche T, Frisch F, Ouellet R, Langlois R, Guérin B, Turcotte EE, Carpentier AC. Normal postprandial nonesterified fatty acid uptake in muscles despite increased circulating fatty acids in type 2 diabetes. Diabetes 2011; 60:408-15. [PMID: 21228312 PMCID: PMC3028339 DOI: 10.2337/db10-0997] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Postprandial plasma nonesterified fatty acid (NEFA) appearance is increased in type 2 diabetes. Our objective was to determine whether skeletal muscle uptake of plasma NEFA is abnormal during the postprandial state in type 2 diabetes. RESEARCH DESIGN AND METHODS Thigh muscle blood flow and oxidative metabolism indexes and NEFA uptake were determined using positron emission tomography coupled with computed tomography (PET/CT) with [(11)C]acetate and 14(R,S)-[(18)F]fluoro-6-thia-heptadecanoic acid ((18)FTHA) in seven healthy control subjects (CON) and seven subjects with type 2 diabetes during continuous oral intake of a liquid meal to achieve steady postprandial NEFA levels with insulin infusion to maintain similar plasma glucose levels in both groups. RESULTS In the postprandial state, plasma NEFA level was higher in type 2 diabetic subjects versus CON (P < 0.01), whereas plasma glucose was at the same level in both groups. Muscle NEFA fractional extraction and blood flow index levels were 56% (P < 0.05) and 24% (P = 0.27) lower in type 2 diabetes, respectively. However, muscle NEFA uptake was similar to that of CON (quadriceps femoris [QF] 1.47 ± 0.23 vs. 1.37 ± 0.24 nmol·g(-1)·min(-1), P = 0.77; biceps femoris [BF] 1.54 ± 0.26 vs. 1.46 ± 0.28 nmol·g(-1)·min(-1), P = 0.85). Muscle oxidative metabolism was similar in both groups. Muscle NEFA fractional extraction and blood flow index were strongly and positively correlated (r = 0.79, P < 0.005). CONCLUSIONS Postprandial muscle NEFA uptake is normal despite elevated systemic NEFA levels and acute normalization of plasma glucose in type 2 diabetes. Lower postprandial muscle blood flow with resulting reduction in muscle NEFA fractional extraction may explain this phenomenon.
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Affiliation(s)
- Sébastien M. Labbé
- Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Québec, Canada
| | - Etienne Croteau
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | | | - Frédérique Frisch
- Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Québec, Canada
| | - René Ouellet
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - Réjean Langlois
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - Brigitte Guérin
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - Eric E. Turcotte
- Department of Nuclear Medicine and Radiobiology, Université de Sherbrooke, Québec, Canada
| | - André C. Carpentier
- Department of Medicine, Division of Endocrinology, Université de Sherbrooke, Québec, Canada
- Corresponding author: André C. Carpentier,
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Labbé S, Grenier-Larouche T, Lavallée E, Phoenix S, Guérin B, Turcotte E, Carpentier A. Reduced adipose tissue and increased myocardial uptake of dietary fatty acid is associated with reduced left ventricular ejection fraction in subjects with impaired glucose tolerance. Can J Diabetes 2011. [DOI: 10.1016/s1499-2671(11)52090-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Grenier-Larouche T, Labbé S, Rivard N, Carpentier A. 4-Phenylbutyrate reverses endoplasmic reticulum stress and lipotoxicity in human adipose tissue stem cells. Can J Diabetes 2011. [DOI: 10.1016/s1499-2671(11)52012-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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