The Unconventional Role for Gastric Volume in the Response to Bariatric Surgery for Both Weight Loss and Glucose Lowering.

Annals of Surgery
Simon S EversRandy J Seeley

Abstract

To study the relationship between the amount of surgery-induced gastric volume reduction and long-term weight loss and glucose tolerance. Vertical sleeve gastrectomy (VSG) has recently surpassed gastric bypass to become the most popular surgical intervention to induce sustained weight loss. Besides inducing significant weight loss, VSG also improves glucose tolerance. Although no clear correlation has been observed between the size of the residual stomach and sustained weight loss, this begs the question whether less aggressive gastric volume reduction may provide sufficient efficacy when weight loss is not the major goal of the surgical intervention. A series of strategies to reduce gastric volume were developed and tested in Long Evans male rats, namely: VSG, Fundal (F)-Resection, Gastric Sleeve Plication (GSP), Fundal-Plication, and Fundal-Constrained. All surgical interventions resulted in a reduction of gastric volume relative to sham, but none of the interventions were as effective as the VSG. Gastric volume was linearly correlated to increased gastric emptying rate as well as increased GLP-1 response. Overall, cumulative food intake was the strongest correlate to weight loss and was logarithmically related to gastric vol...Continue Reading

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Citations

Dec 8, 2019·Obesity Surgery·A B BoerboomE O Aarts
Feb 19, 2021·Frontiers in Neuroscience·Laurent Gautron
Aug 8, 2021·Nature Communications·Nadejda Bozadjieva-KramerRandy J Seeley

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