Vildagliptin

Vildagliptin is the most stable DPP-IV inhibitor, binding in the S1- and S2-catalytic sites of DPP-IV, possessing a P-1 site transition-state mimetic. ^[1]

Vildagliptin(orally dosed with 10 μmol/kg) is a potent, orally active inhibitor of plasma DPP-IV activity that provides increased levels of GLP-1 in an oral glucose tolerance test (OGTT) with Obese male Zucker rats. Vildagliptin orally dosed with 10 μmol/kg both significantly decreases glucose excursions and stimulates insulin secretion in Obese male Zucker rats. Maximum inhibition of plasma DPP-IV activity (95%) is observed approximately 2 hours postdose of Vildagliptin (1 μmol/kg, po) while >50% inhibition of DPP-IV is observed within 30 min postdose and persisted for >10 hours in normal Cynomolgus monkeys. ^[1] Vildagliptin(60 mg/kg) increases pancreatic beta cell mass through enhanced beta cell replication and reduced apoptosis, and the increased beta cell mass is sustained for 12 days after vildagliptin washout. ^[2] Vildagliptin administrated at doses of 10 mg/kg for 32 weeks protects nerve fiber loss in streptozotocin (STZ)-induced diabetic adult male Sprague Dawley rats. ^[3]