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Glucagon-like peptide 2 Drucker DJJ Clin Endocrinol Metab 2001[Apr]; 86 (4): 1759-64Glucagon-like peptide 2 (GLP-2) is a 33 amino acid peptide-encoded carboxyterminal to the sequence of GLP-1 in the proglucagon gene. Both GLP-1 and GLP-2 are secreted from gut endocrine cells and promote nutrient absorption through distinct mechanisms of action. GLP-2 regulates gastric motility, gastric acid secretion, intestinal hexose transport, and increases the barrier function of the gut epithelium. GLP-2 significantly enhances the surface area of the mucosal epithelium via stimulation of crypt cell proliferation and inhibition of apoptosis in the enterocyte and crypt compartments. The cytoprotective and reparative effects of GLP-2 are evident in rodent models of experimental intestinal injury. GLP-2 reduces mortality and decreases mucosal injury, cytokine expression, and bacterial septicemia in the setting of small and large bowel inflammation. GLP-2 also enhances nutrient absorption and gut adaptation in rodents or humans with short bowel syndrome. The actions of GLP-2 are transduced by the GLP-2 receptor, a G protein-coupled receptor expressed in gut endocrine cells of the stomach, small bowel, and colon. Activation of GLP-2 receptor signaling in heterologous cells promotes resistance to apoptotic injury in vitro. The cytoprotective, reparative, and energy-retentive properties of GLP-2 suggests that GLP-2 may potentially be useful for the treatment of human disorders characterized by injury and/or dysfunction of the intestinal mucosal epithelium.|Amino Acid Sequence/genetics[MESH]|Animals[MESH]|Glucagon-Like Peptide 1[MESH]|Glucagon-Like Peptide 2[MESH]|Glucagon-Like Peptide-1 Receptor[MESH]|Humans[MESH]|Molecular Sequence Data[MESH]|Peptides/genetics/*physiology[MESH]|Receptors, Glucagon/physiology[MESH] |
