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Diabetes

The search for mechanisms underlying bariatric surgery

Bariatric surgery is an effective weight-loss strategy and often results in remission of type 2 diabetes mellitus (T2DM); still, how this surgery affects T2DM is unknown. A new study suggests that fibroblast growth factor 19 and bile acids are involved in remission of T2DM after bariatric surgery.

Key Points

  • Roux-en-Y gastric bypass (RYGB) leads to weight loss and remission of type 2 diabetes mellitus (T2DM)

  • Levels of bile acids and their intestinal signal, fibroblast growth factor 19 (FGF-19), are increased after RYGB

  • Patients with sustained remission of T2DM after RYGB surgery have the highest increase in serum levels of both FGF-19 and bile acids

  • The bile acid–FGF-19 axis might be an important mechanism by which RYGB improves T2DM

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Correspondence to Randy J. Seeley.

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Competing interests

R. Kohli receives a research grant from Ethicon Endo-Surgery. R. J. Seeley has shares and stock options with Zafgen, and consults for and/or receives grant support from Angiochem, Boehringer-Ingelheim, Eli Lilly, Ethicon Endo-Surgery, Merck, Novartis, Novo Nordisk, Takeda, Zafgen.

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Kohli, R., Seeley, R. The search for mechanisms underlying bariatric surgery. Nat Rev Endocrinol 9, 572–574 (2013). https://doi.org/10.1038/nrendo.2013.159

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