Glucagon is a secreted protein and belongs to the glucagon family. Glucagon can be cleved into 8 chains, playing an important role in initiating and maintaining hyperglycemic conditions in diabetes. Glucagon can regulates blood glucose by decreasing glycolysis and increasing gluconeogenesis. In addition, Glucagon is involved in initiating and maintaining hyperglycemic conditions in diabetes. Glucagon release is stimulated by hypoglycemia and inhibited by hyperglycemia, insulin, and somatostatin. In the glucagon antagonist, His-53 and Phe-58 are missing. This antagonist has been successfully utilized to reduce glucose concentration in vivo.
GLP-1 amide is a peptide hormone cleaved from proglucagon in the pancreas.1,2 Mice lacking the glucagon receptor (Gcgr-/-) have approximately nine-fold higher levels of total GLP-1 amide, including GLP-1 (1-36) amide and truncated GLP-1 (7-36) amide , in pancreatic tissue compared to wild-type mice.2References1. Schjoldager, B.T., Mortensen, P.E., Christiansen, J., et al. GLP-1 (glucagon-like peptide 1) and truncated GLP-1, fragments of human proglucagon, inhibit gastric acid secretion in humans. Dig. Dis. Sci. 34(5), 703-708 (1989).2. Gelling, R.W., Du, X.Q., Dichmann, D.S., et al. Lower blood glucose, hyperglucagonemia, and pancreatic α cell hyperplasia in glucagon receptor knockout mice. Proc. Natl. Acad. Sci. U.S.A. 100(3), 1438-1443 (2003).
GLP-1 amide is a peptide hormone cleaved from proglucagon in the pancreas.1,2 Mice lacking the glucagon receptor (Gcgr-/-) have approximately nine-fold higher levels of total GLP-1 amide, including GLP-1 (1-36) amide and truncated GLP-1 (7-36) amide , in pancreatic tissue compared to wild-type mice.2
References1. Schjoldager, B.T., Mortensen, P.E., Christiansen, J., et al. GLP-1 (glucagon-like peptide 1) and truncated GLP-1, fragments of human proglucagon, inhibit gastric acid secretion in humans. Dig. Dis. Sci. 34(5), 703-708 (1989).2. Gelling, R.W., Du, X.Q., Dichmann, D.S., et al. Lower blood glucose, hyperglucagonemia, and pancreatic α cell hyperplasia in glucagon receptor knockout mice. Proc. Natl. Acad. Sci. U.S.A. 100(3), 1438-1443 (2003).
The truncated glucagon-like peptides GLP-1(7-37) is naturally occurring peptide product of the preproglucagon gene that are synthesized primarily in the intestine and acts as incretin that are released from the intestine into the bloodstream in response to food and stimulate insulin secretion. GLP-1(7-37) produced a dose-related enhancement of the glucose-stimulated increase in plasma insulin concentration and an increased rate of glucose infusion in Sprague-Dawley Rats at a dosing rang of 0.5, 5, or 50 pmol/min/kg. Further, infusion of GLP-1(7-37) for 60 mins produced a small transitory increase in plasma insulin concentration in fasted rats and fed rats and a slight transitory decrease in plasma glucose concentration. Moreover, GLP-1(7-37) (5 pmol/min/kg IV) infusion for 6 h in Sprague-Dawley rats produced a sustained increase in plasma insulin concentration relative to levels in rats infused with vehicle[1].