Abstract
Cannulas were implanted to collect bile and pancreatic juice, and the collected secretions were pumped back into the intestine at the level of the duodenum or the proximal ileum. The effect of 6 days of such treatment on pancreatic secretion and on pancreatic growth was determined. The effect on pancreatic secretion was studied by measuring the pancreatic secretory response to a stimulus, provided by acute diversion of bile-pancreatic juice from the proximal intestine. Trophic effects were studied in a separate group of rats by measuring pancreatic weight, protein content, and chymotrypsin activity after an overnight fast. Stimulated pancreatic secretion was 2.1 times greater for protein output and 3.4 times greater for fluid output in rats with chronic diversion of bile-pancreatic juice to the ileum. Pancreatic weight, protein content, and chymotrypsin activity were increased 2.6, 2.9, and 4.8 times, respectively, by chronic diversion of bile-pancreatic juice to the ileum. These results indicate that pancreatic hypertrophy and hyperplasia reported in rats with bile-pancreatic duct transposition to the ileum are the result of loss of feed-back inhibition from bile-pancreatic juice in the proximal intestine.
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