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contentuptodate· Content· item f16_12_16578

©2013 UpToDate ® Print Email Cholecystokinin (CCK) regulation of enzyme release The presence of fat and protein constituents in the duodenum and proximal jejunum causes the release of CCK from gut endocrine cells. CCK acts directly and through vagal mechanisms to stimulate the release of enzymes from pancreatic acinar cells. Courtesy of Cleveland Clinic Foundation.