Abstract
Objective: A liquid chromatography-mass spectrometry method was developed, validated, and applied to the pharmacokinetic study with doses of 0.68, 2.73 and 10.92mg/kg of ginkgolide B in beagle dogs after intravenous infusion. Method: An aliquot of blood samples were collected, separated and quantitatively analyzed by liquid chromatography-mass spectrometry method with mobile phase of acetonitrile-0.02% ammonia solution (33:67, v/v) at a flow rate of 0.8mL/min on the UltimateTM XB-C18 column (5μm, 4.6×150mm). Results: The method was sensitive, accurate and convenient, and can be used for the determination of ginkgolide B in beagle dogs. The Cmax and AUC0- of GB increased with dose escalation, but ANOVA analyses showed that no significant difference was observed in other pharmacokinetic parameters between different doses. Conclusion: An LC/MS method was developed with good sensitivity, reproducibility and specificity. In the pharmacokinetic study of GB in beagle dogs, linear pharmacokinetics was found at doses from 0.62 to 10.92mg/kg after a single-dose intravenous infusion. Gender differences were not observed in the pharmacokinetics of GB.
NSTL
Thieme Medical Publishers