期刊
OBESITY SURGERY
卷 22, 期 9, 页码 1473-1480出版社
SPRINGER
DOI: 10.1007/s11695-012-0673-5
关键词
Obesity surgery; Bile acids; Glucose and lipid oxidation; DIO2; CYP27A1
类别
资金
- Finnish Diabetes Research Foundation
- Academy of Finland [120979, 138006]
- EU Ideas program [ERC-2008-AdG-23118]
- Swiss National Science Foundation (FNS)
- Ecole Polytechnique Federale de Lausanne
- Academy of Finland (AKA) [120979] Funding Source: Academy of Finland (AKA)
Laparoscopic Roux-en-Y gastric bypass (RYGB) induces a more favorable metabolic profile than expected by weight loss alone. In this study, we investigated the effect of RYGB on serum bile acid levels and their relation to clinical outcomes. We included 30 obese patients who underwent RYGB (BMI = 46.1 +/- 5.9 kg/m(2)). Clinical measurements and laboratory determinations were performed before surgery and 1 year after surgery. Fasting serum bile acids were measured by an enzymatic method and individual bile acids were quantified by HLPC-tandem mass spectrometry. Indirect calorimetry was performed to measure the rates of energy expenditure and substrate oxidation. Fasting total serum bile acid levels increased twofold after RYGB (pre, 3.68 +/- 2.03 vs. post, 7.06 +/- 9.65 mu mol/l, +92 %, p = 0.002). This increase in total bile acids was accompanied by a decrease in conjugated bile acids, which correlated with decreased glucose oxidation (r = 0.571, p = 0.002) and with increased lipid oxidation (r = -0.626, p = 0.0004). The change in taurine-conjugated bile acids correlated with altered DIO2 mRNA expression in adipose tissue (r = -0.498, p = 0.013) potentially linking bile acid conjugation to substrate oxidation through DIO2. Fasting serum bile acid levels increase after RYGB. More specifically, changes in bile acid conjugation after RYGB associate with altered energy metabolism.
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