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Mechanisms in bariatric surgery: Gut hormones, diabetes resolution, and weight loss

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DOI

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  2. Postprandial hyperinsulinemic hypoglycemia after Roux-en-Y gastric bypass: an update

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  3. Mechanisms of surgical control of type 2 diabetes: GLP-1 is key factor

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  1. Glucagon-like peptide-1 receptor regulation of basal dopamine transporter activity is species-dependent

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  2. Bilio-enteric flow and plasma concentrations of bile acids after gastric bypass and sleeve gastrectomy

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  3. Secretin release after Roux-en-Y gastric bypass reveals a population of glucose-sensitive S cells in distal small intestine

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Vis graf over relationer

Gastric bypass surgery leads to profound changes in the secretion of gut hormones with effects on metabolism, appetite, and food intake. Here, we discuss their contributions to the improvement in glucose tolerance and the weight loss that results from the operations. We find that the improved glucose tolerance is due the following events: a negative energy balance and resulting weight loss, which improve first hepatic and later peripheral insulin sensitivity, in combination with increased postprandial insulin secretion elicited particularly by exaggerated glucagon-like peptide-1 responses. The weight loss is due to loss of appetite resulting in reduced energy intake, and we find it probable that this process is driven by exaggerated secretion of appetite-regulating gut hormones including, but probably not limited to, glucagon-like peptide-1 and peptide-YY. The increased secretion is due to an accelerated exposure to and absorption of nutrients in the small intestine. This places the weight loss and the gut hormones in key positions with respect to the metabolic improvements after bypass surgery.

OriginalsprogEngelsk
TidsskriftSurgery for obesity and related diseases : official journal of the American Society for Bariatric Surgery
Vol/bind14
Udgave nummer5
Sider (fra-til)708-714
ISSN1550-7289
DOI
StatusUdgivet - 1 maj 2018

ID: 54347502