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Follistatin secretion is enhanced by protein, but not glucose or fat ingestion in obese persons independently of previous gastric bypass surgery

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review


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Follistatin is secreted from the liver and is involved in the regulation of muscle mass and insulin sensitivity via inhibition of activin A in humans. The secretion of follistatin seems to be stimulated by glucagon and inhibited by insulin, but only limited knowledge on the postprandial regulation of follistatin exists. Moreover, results on postoperative changes after Roux-en-Y gastric bypass (RYGB) are conflicting with reports of increased, unaltered, and lowered fasting concentrations of follistatin. In this study, we investigated postprandial follistatin and activin A concentrations after intake of isocaloric amounts of protein, fat, or glucose in subjects with obesity with and without previous RYGB to explore the regulation of follistatin by the individual macronutrients. Protein intake enhanced follistatin concentrations similarly in the two groups, whereas glucose and fat ingestion did not change postprandial follistatin concentrations. Concentrations of activin A were lower after protein intake compared with glucose intake in RYGB. Glucagon concentrations were also particularly enhanced by protein intake and tended to correlate with follistatin in RYGB. In conclusion, we demonstrated that protein intake, but not glucose or fat, is a strong stimulus for follistatin secretion in subjects with obesity and that this regulation is maintained after RYGB surgery.

TidsskriftAmerican Journal of Physiology: Gastrointestinal and Liver Physiology
Udgave nummer5
Sider (fra-til)G753-G758
StatusUdgivet - 1 maj 2021

Bibliografisk note

Funding Information:
K. N. Bojsen-Møller was supported by a NNF Excellence Project Grant (NNF18OC0032330). N. J. Wewer Albrechtsen was supported by a NNF Excellence Emerging Investigator Grant— Endocrinology and Metabolism (NNF19OC0055001).

ID: 64082030