Bingying Hu, Yingying Sun, Min Wang, Zhihui He, Shanshan Chen, D. Qi, Zhen Ge, L. Fan, Jingfang Chen, Yang Wei
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Simultaneous determination of ginkgolide A, B, C, bilobalide and rutin in rat plasma by LC-MS/MS and its application to a pharmacokinetic study
A reliable LC-MS/MS method for the determination of five bioactive constituents (bilobalide, BLL; ginkgolide A, GLA; ginkgolide B, GLB; ginkgolide C, GLC; rutin) of Ginkgo biloba leaf extracts (GBE) in rat plasma was established, fully validated and applied to an intragastric pharmacokinetic study of a preparation of GBE in rat. Samples were extracted with ethyl acetate. C18 column was selected as analytical column in this method. Mobile phase was water with 0.01% formic acid and acetonitrile. Quantification was performed in negative multiple-reaction monitoring mode. Matrix instability of terpene lactones was noticed and hydrochloric acid was used as a stabilizer. This method showed good precision and accuracy, recovery was reproducible and matrix effect was negligible. Among four terpene lactones, BLL had the highest exposure and the shortest terminal half-life, GLA and GLB had lower exposure and longer terminal half-life, the exposure of GLC was lowest and its terminal half-life was the maximum, and all of them showed rapid absorption. This study provides a reference for determination of terpene lactones and flavonol glycoside prototypes in GBE and offers pharmacokinetic data of flavonol glycoside prototype in GBE.
期刊介绍:
Acta Chromatographica
Open Access
Acta Chromatographica publishes peer-reviewed scientific articles on every field of chromatography, including theory of chromatography; progress in synthesis and characterization of new stationary phases; chromatography of organic, inorganic and complex compounds; enantioseparation and chromatography of chiral compounds; applications of chromatography in biology, pharmacy, medicine, and food analysis; environmental applications of chromatography; analytical and physico-chemical aspects of sample preparation for chromatography; hyphenated and combined techniques; chemometrics and its applications in separation science.