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Inhibition of endogenous pancreatic enzyme secretion by oral pancreatic enzyme treatment

Background  The existence of a feedback mechanism for exocrine pancreatic secretion in humans is controversial. Exclusion of proteases from the duodenum stimulates exocrine pancreatic secretion. Conversely, addition of exogenous enzymes could reduce the enzyme secretion. Further investigation of the feedback mechanism should be performed under the most physiological conditions. In the present study we investigated exocrine pancreatic function by measuring fecal enzyme output in healthy volunteers consuming a normal diet, before and during a time course of exogenous pancreatic enzyme supplementation.