• Eur. J. Clin. Invest. · Feb 1988

    Stimulation of pancreatic secretion in man by a protease inhibitor (camostate).

    • G Adler, A Müllenhoff, I Koop, T Bozkurt, B Göke, C Beglinger, and R Arnold.
    • Department of Internal Medicine, University of Marburg, FRG.
    • Eur. J. Clin. Invest. 1988 Feb 1; 18 (1): 98-104.

    AbstractPancreatic secretion and plasma cholecystokinin (CCK) and secretin levels were measured in 10 healthy volunteers after application of a serine protease inhibitor (camostate) to study the mechanism of feedback regulation. Camostate produced a strong inhibition of trypsin and chymotrypsin activity in duodenal juice for 1 h. This was accompanied by an increase in duodenal aspirate volume and pancreatic enzyme secretion under both basal and secretin-stimulated conditions. Due to inhibition of tryptic activity, survival of lipase activity in duodenal juice was prolonged. In control experiments we ruled out that the volume and the pH of the solution were responsible for stimulation of pancreatic secretion. The protease inhibitor did not alter pancreatic secretion, which was stimulated by a test meal. Plasma levels of CCK and secretin were not changed after duodenal perfusion of camostate. These observations suggest that trypsin and chymotrypsin are involved in feedback regulation of pancreatic secretion in man which is, however, not mediated by CCK or secretin.

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