title: Antidiabetic activity of a triterpenoid saponin isolated from Momordica cymbalaria Fenzl.
abstract: Glucose uptake by isolated diaphragms of both diabetic, following streptozotocin administration, and non-diabetic animals increased in presence of an oleanane-type triterpenoid saponin isolated from the roots of M. cymbalaria. Insulin release was augmented by the presence of the saponin of M. cymbalaria (1 mg/mL) in rat insulinoma cell line (RIN-5F) preexposed to adrenaline (5 microM) and nifedipine (50 microM). Pancreatic histology also indicated considerable quantitative increase in beta-cells (75%) when treated with the saponin. The results suggest that the saponin of M. cymbalaria possesses potential antidiabetic activity with respect to insulin secretion, which may be attributed to modulation of calcium channel, and beta-cell rejuvenation.
authors.forename: Raju Balwanth
authors.initials: RB
authors.lastname: Koneri
authors.forename: Suman
authors.initials: S
authors.lastname: Samaddar
authors.forename: Channakeshava Thimmasandra
authors.initials: CT
authors.lastname: Ramaiah
mesh_terms: D000818:Animals; D015220:Calcium Channels / Q000187:drug effects; D003921:Diabetes Mellitus, Experimental / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology; D005947:Glucose / Q000378:metabolism*; D007004:Hypoglycemic Agents / Q000008:administration & dosage; D007328:Insulin / Q000378:metabolism; D000078790:Insulin Secretion; D050417:Insulin-Secreting Cells / Q000187:drug effects; D029775:Momordica / Q000737:chemistry; D010936:Plant Extracts / Q000008:administration & dosage* / Q000737:chemistry; D051381:Rats; D012503:Saponins / Q000008:administration & dosage*; D014315:Triterpenes / Q000008:administration & dosage
chemical_list: D015220:Calcium Channels; D007004:Hypoglycemic Agents; D007328:Insulin; D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; D005947:Glucose