Abstract
The true biological role of gut glucagon-like immunoreactive materials (gut GLI) is still unknown, although the stimulatory effect of intraluminal nutrients on the secretion of gut GLI has been described. The present authors, using the canine intestinal loop prepared from the terminal portion of the ileum, investigated how gut GLI would respond to digestive juice or its components. When bladder bile collected from another dog and diluted to 10% in saline was instilled into canine ileal loop, gut GLI in a branch of regional mesenteric vein was elevated significantly. Cholic acid suspended in saline (0.25 g/50 ml) also stimulated gut GLI secretion in the similar pattern to that of bile administration. On the other hand, 154 mM NaHCO3 which is a major inorganic component of pancreatic juice did not affect the venous level of gut GLI.
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