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Title: Effects of acute dietary weight loss on postprandial plasma bile acid responses in obese insulin resistant subjects. Author: van Nierop FS, Kulik W, Endert E, Schaap FG, Olde Damink SW, Romijn JA, Soeters MR. Journal: Clin Nutr; 2017 Dec; 36(6):1615-1620. PubMed ID: 27773549. Abstract: BACKGROUND & AIMS: Bile acids (BA) are pleiotropic hormones affecting glucose and lipid metabolism. The physiochemical properties of different BA species affect their enterohepatic dynamics and their affinity for bile acid receptors. The BA pool composition is altered in patients with type 2 diabetes and obesity. In this study we used a 2-week very-low-calorie diet (VLCD) to investigate the effects of weight loss on BA pool composition and postprandial dynamics. METHODS: We performed mixed meal tests in obese, insulin resistant subjects before and after the VLCD. We measured postprandial plasma levels of glucose, insulin, BA and the BA-induced enterokine fibroblast growth factor 19 (FGF19). RESULTS: The VLCD decreased weight by 4.5 ± 2.3 kg (p < 0.0001) within 14 days. Weight loss increased peak postprandial deoxycholate (DCA) levels (median [IQR]: 0.90 [0.90] vs. 1.25 [1.35] μmol/L; p = 0.045*). Other BA species, glucose, insulin and FGF19 levels and prandial excursions were not significantly affected. The VLCD decreased resting and postprandial energy expenditure by 7 and 11% respectively. CONCLUSIONS: VLCD induced weight loss increased postprandial DCA peak levels and decreased resting energy expenditure in obese insulin resistant subjects.[Abstract] [Full Text] [Related] [New Search]