Plays a key role in glucose metabolism and homeostasis. Regulates blood glucose by increasing gluconeogenesis and decreasing glycolysis. A counterregulatory hormone of insulin, raises plasma glucose levels in response to insulin-induced hypoglycemia. Plays an important role in initiating and maintaining hyperglycemic conditions in diabetes.; Potent stimulator of glucose-dependent insulin release. Also stimulates insulin release in response to IL6. Plays important roles on gastric motility and the suppression of plasma glucagon levels. May be involved in the suppression of satiety and stimulation of glucose disposal in peripheral tissues, independent of the actions of insulin. Has growth-promoting activities on intestinal epithelium. May also regulate the hypothalamic pituitary axis (HPA) via effects on LH, TSH, CRH, oxytocin, and vasopressin secretion. Increases islet mass through stimulation of islet neogenesis and pancreatic beta cell proliferation. Inhibits beta cell apoptosis.; Stimulates intestinal growth and up-regulates villus height in the small intestine, concomitant with increased crypt cell proliferation and decreased enterocyte apoptosis. The gastrointestinal tract, from the stomach to the colon is the principal target for GLP-2 action. Plays a key role in nutrient homeostasis, enhancing nutrient assimilation through enhanced gastrointestinal function, as well as increasing nutrient disposal. Stimulates intestinal glucose transport and decreases mucosal permeability.; Significantly reduces food intake. Inhibits gastric emptying in humans. Suppression of gastric emptying may lead to increased gastric distension, which may contribute to satiety by causing a sensation of fullness.; May modulate gastric acid secretion and the gastro-pyloro-duodenal activity. May play an important role in intestinal mucosal growth in the early period of life.

1. Data suggest that casein, safflower oil, sucrose, and sweetening agent rebaudioside A stimulate GLP1 release/secretion from enteroendocrine cells. (GLP1 = glucagon-like peptide 1, a peptide fragment derived from proglucagon) PMID: 27142747
2. The patterns of colocalization of the K cell marker, glucagon-like insulinotropic peptide, and L cell markers, glucagon like peptide-1 and peptide YY, in enteroendocrine cells of the small intestine and colon of mouse and pig, were investigated. PMID: 25378285

Secreted.; [Glucagon-like peptide 1]: Secreted.

Glucagon family

Glucagon is secreted in the A cells of the islets of Langerhans. GLP-1, GLP-2, oxyntomodulin and glicentin are secreted from enteroendocrine cells throughout the gastrointestinal tract. GLP-1 and GLP-2 are also secreted in selected neurons in the brain.

KEGG: ssc:397595

STRING: 9823.ENSSSCP00000016844

UniGene: Ssc.17225