pancreatic acinar cell

pancreatic acinar cell

This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional. Pancreatic acinar cells are the functional units of the exocrine pancreas. These cells are structurally arranged in small clusters - or acini - with a small central lumen, and their primary function is to produce and secrete enzymes that facilitate digestion of proteins, carbohydrates, and fats within the small intestine. Some of the most important digestive enzymes synthesized by the pancreatic acinar cells include amylase, which digests carbohydrates, lipase, which breaks down fats, and several proteases such as trypsin and chymotrypsin which are vital for the digestion of proteins. Importantly, these enzymes are produced as proenzymes or zymogens to avoid autolysis, or the breakdown of the pancreas itself. The release of these enzymes by the pancreatic acinar cells is strictly regulated by hormones and neurochemicals. Cholecystokinin (CCK) released from the enteroendocrine cells in the duodenum cause the release of these enzymes. Moreover, acinar cells also respond to another hormone, secretin, by releasing bicarbonate-rich fluid which helps to neutralize the gastric acid in the duodenum. Dysregulation in the function of pancreatic acinar cells can lead to severe health issues, including pancreatitis, which is characterized by inflammatory damage to the organ due to the premature activation of digestive enzymes.

2010-06-24T03:16:29Z

CL:0002064

acinar cell of pancreas