How does Vertical Sleeve Gastrectomy
(VSG) alter gastrointestinal tissue architecture to modify postprandial gut
hormone secretion profiles?

Question

Accepted Answer

Resection of the gastric fundus decreases plasma ghrelin, while rapid nutrient transit enhances postprandial GLP-1 and PYY secretion.

Answer

Bypass
of the proximal jejunum eliminates postprandial insulin release, while
stimulating basal glucagon secretion from parietal cells

Answer

Resection
of the distal duodenum increases ghrelin secretion, while delayed gastric
emptying suppresses postprandial CCK and GIP release.

Answer

Transection of the pyloric sphincter abolishes GLP-1 and PYY secretion, while upregulating gastric leptin gene expression five-fold.

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