The grayanotoxin III (GTX III) was given intraperitoneally to rats at a dose of 0.8 or 2.8 mg/kg. To study the effects of GTX III on rats, biological tests in serum for functions of liver and kidney and their pathological observation were performed 1 h after the administration. Using analysis of variance, multiple comparison and correlation on biological parameters, activities of glutamic-pyruvic transaminase (GPT), guanase and leucine aminopeptidase and concentrations of total protein, albumin, creatinine, uric acid and K increased significantly. These parameters showed dose-effect relations with GTX III. Though GPT and free fatty acid increased significantly, dose-effect relations were not shown. The activity of choline esterase and the concentrations of bilirubin, urea-N, lipoperoxide, cholesterol, triglycerides, Na and Cl were not significantly different. Pathological changes were not observed in the liver and kidney of rats. These results show that GTX III may affect the functions of liver and kidney in rats.
