| Conjugated Bile Acids Associate with Altered Rates of Glucose and Lipid Oxidation after Roux-en-Y Gastric Bypass. | |
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MedLine Citation:
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PMID: 22638681 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: 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. METHODS: 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. RESULTS: Fasting total serum bile acid levels increased twofold after RYGB (pre, 3.68 ± 2.03 vs. post, 7.06 ± 9.65 μmol/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. CONCLUSIONS: 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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Authors:
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M Simonen; N Dali-Youcef; D Kaminska; S Venesmaa; P Käkelä; M Pääkkönen; M Hallikainen; M Kolehmainen; M Uusitupa; L Moilanen; M Laakso; H Gylling; M E Patti; J Auwerx; Jussi Pihlajamäki |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-5-26 |
Journal Detail:
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Title: Obesity surgery Volume: - ISSN: 1708-0428 ISO Abbreviation: - Publication Date: 2012 May |
Date Detail:
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Created Date: 2012-5-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9106714 Medline TA: Obes Surg Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Medicine, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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