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Related Experiment Videos

Bile acids and bariatric surgery.

Vance L Albaugh1, Babak Banan1, Hana Ajouz2

  • 1Department of Surgery, Vanderbilt University Medical Center, Nashville, TN 37232, USA.

Molecular Aspects of Medicine
|April 10, 2017
PubMed
Summary
This summary is machine-generated.

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Surgically reshaping the gut microbiome.

Nature metabolism·2026

Bariatric surgery, like gastric bypass, effectively treats obesity and type 2 diabetes (T2D). Altered bile acids after surgery improve metabolism, potentially through gut microbiome changes and receptor activation.

Area of Science:

  • Metabolic Surgery
  • Endocrinology
  • Gastroenterology

Background:

  • Morbid obesity and type 2 diabetes (T2D) are significant health concerns.
  • Bariatric surgeries, including Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG), offer effective T2D treatment with 40-80% resolution rates.
  • The precise molecular mechanisms underlying T2D remission post-surgery are not fully elucidated.

Purpose of the Study:

  • To review the role of altered bile acid circulation in metabolic improvements following bariatric surgery.
  • To explore how bile acids influence glucose and lipid homeostasis, insulin sensitivity, and energy expenditure.
  • To examine the interplay between bile acids, gut microbiota, and metabolic regulation.

Main Methods:

  • Review of existing literature on bariatric surgery outcomes and bile acid metabolism.
Keywords:
Bariatric surgeryBile acidsMetabolic surgeryMetabolismObesityRoux-en-Y gastric bypass (RYGB)Vertical sleeve gastrectomy (VSG)

Related Experiment Videos

  • Analysis of rodent studies involving surgical alterations of bile secretion.
  • Examination of the roles of bile acid receptors FXR and TGR5.

    • Main Results:

    • Bariatric surgery significantly alters enterohepatic circulation of bile acids.
    • Changes in bile acids are linked to improved lipid and glucose metabolism and insulin sensitivity.
    • Gut microbiota composition is affected by altered bile acid profiles, potentially contributing to metabolic benefits.

    Conclusions:

    • Bile acids play a crucial role beyond fat digestion, impacting whole-body glucose and lipid metabolism.
    • Activation of FXR and TGR5 by bile acids may mediate metabolic improvements after bariatric surgery.
    • Further research is needed to fully understand the long-term effects of bile acids in post-bariatric surgery metabolic health.