Pancreatic islet (None commonly standardized; sometimes abbreviated as "islet" or "islet of Langerhans," but not formalized as a molecular target abbreviation[9][1].)

A **pancreatic islet** (islet of Langerhans) is a highly specialized, three-dimensional micro-organ within the pancreas composed of several hormone-secreting cell types, most notably beta cells (insulin, amylin), alpha cells (glucagon), delta cells (somatostatin), PP/gamma cells (pancreatic polypeptide), and epsilon cells (ghrelin). Islets regulate systemic metabolism—primarily blood glucose levels—through tightly coordinated paracrine and endocrine signaling. Islets are richly vascularized, innervated, and display notable interspecies differences in cell composition and arrangement. Dysfunction or destruction of islet cells underlies the pathogenesis of major metabolic diseases, including both type 1 and type 2 diabetes mellitus[1][9][5][3][6]. If a specific molecule, cell type, or receptor within the islet is relevant for your application (for example, "insulin receptor," "GLP-1 receptor," or "sulfonylurea receptor"), specify that entity for precise structured information.

Other names

Islets of Langerhans[9]Pancreatic endocrine isletsPancreatic islet cluster

Not applicable at the islet level; mechanisms relate to specific targets (e.g., *GLP-1 receptor agonists* enhance insulin secretion from beta cells in islets, *sulfonylureas* increase insulin release by closing ATP-sensitive potassium channels in beta cells)[1][6].