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FXR is a molecular target for the effects of vertical sleeve gastrectomy

Author

Listed:
  • Karen K. Ryan

    (Diabetes and Metabolism, University of Cincinnati)

  • Valentina Tremaroli

    (Wallenberg Laboratory, University of Gothenburg, S-413 45 Gothenburg, Sweden)

  • Christoffer Clemmensen

    (Diabetes and Metabolism, University of Cincinnati
    Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark)

  • Petia Kovatcheva-Datchary

    (Wallenberg Laboratory, University of Gothenburg, S-413 45 Gothenburg, Sweden)

  • Andriy Myronovych

    (Hepatology, and Nutrition, Cincinnati Children’s Hospital Medical Center)

  • Rebekah Karns

    (Divison of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center)

  • Hilary E. Wilson-Pérez

    (Diabetes and Metabolism, University of Cincinnati)

  • Darleen A. Sandoval

    (Diabetes and Metabolism, University of Cincinnati)

  • Rohit Kohli

    (Hepatology, and Nutrition, Cincinnati Children’s Hospital Medical Center)

  • Fredrik Bäckhed

    (Wallenberg Laboratory, University of Gothenburg, S-413 45 Gothenburg, Sweden
    Novo Nordisk Foundation Center for Basic Metabolic Research, Section for Metabolic Receptology and Enteroendocrinology, Faculty of Health Sciences, University of Copenhagen, Copenhagen, DK-2200, Denmark)

  • Randy J. Seeley

    (Diabetes and Metabolism, University of Cincinnati)

Abstract

Bariatric surgical procedures, such as vertical sleeve gastrectomy (VSG), are at present the most effective therapy for the treatment of obesity, and are associated with considerable improvements in co-morbidities, including type-2 diabetes mellitus. The underlying molecular mechanisms contributing to these benefits remain largely undetermined, despite offering the potential to reveal new targets for therapeutic intervention. Substantial changes in circulating total bile acids are known to occur after VSG. Moreover, bile acids are known to regulate metabolism by binding to the nuclear receptor FXR (farsenoid-X receptor, also known as NR1H4). We therefore examined the results of VSG surgery applied to mice with diet-induced obesity and targeted genetic disruption of FXR. Here we demonstrate that the therapeutic value of VSG does not result from mechanical restriction imposed by a smaller stomach. Rather, VSG is associated with increased circulating bile acids, and associated changes to gut microbial communities. Moreover, in the absence of FXR, the ability of VSG to reduce body weight and improve glucose tolerance is substantially reduced. These results point to bile acids and FXR signalling as an important molecular underpinning for the beneficial effects of this weight-loss surgery.

Suggested Citation

  • Karen K. Ryan & Valentina Tremaroli & Christoffer Clemmensen & Petia Kovatcheva-Datchary & Andriy Myronovych & Rebekah Karns & Hilary E. Wilson-Pérez & Darleen A. Sandoval & Rohit Kohli & Fredrik Bäck, 2014. "FXR is a molecular target for the effects of vertical sleeve gastrectomy," Nature, Nature, vol. 509(7499), pages 183-188, May.
  • Handle: RePEc:nat:nature:v:509:y:2014:i:7499:d:10.1038_nature13135
    DOI: 10.1038/nature13135
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    Cited by:

    1. Jonathan M. Dreyfuss & Yixing Yuchi & Xuehong Dong & Vissarion Efthymiou & Hui Pan & Donald C. Simonson & Ashley Vernon & Florencia Halperin & Pratik Aryal & Anish Konkar & Yinong Sebastian & Brandon , 2021. "High-throughput mediation analysis of human proteome and metabolome identifies mediators of post-bariatric surgical diabetes control," Nature Communications, Nature, vol. 12(1), pages 1-13, December.

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