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).
Bimatoprost is an F-series prostaglandin (PG) analog which has been approved for use as an ocular hypotensive drug. Oxidation of the C-15 hydroxyl group and amide hydrolysis of Bimatoprost produces 15-keto-17-phenyl trinor PGF2α. 15-keto-17-phenyl trinor PGF2α is a potential metabolite of bimatoprost when administered to animals. 15-keto PG analogs are potential minor impurities in commercial preparations of their corresponding bulk drug compounds. Although much less potent that the parent compound, 15-keto PGs still retain the ability to produce a small but measurable decrease (1 mm Hg) in the intraocular pressure of normal cynomolgus monkeys when administered at a dose of 1 μg eye. 15-keto Latanoprost (15-keto-17-phenyl-13,14-dihydro trinor PGF2α isopropyl ester) is a miotic in the normal cat eye, causing an 8 mm reduction in pupillary diameter at 5 μg eye. Again, this is not as potent as many other F-type PGs; for example, PGF2α will produce this degree of miosis at a dose of less than 1 μg eye.