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DOI: 10.1055/s-0042-111904
Determination of Ginkgolides A, B, C, J and Bilobalide in Plasma by LC-ESI (-)/MS/MS (QQQ) and its Application to the Pharmacokinetic Study of Ginkgo Biloba Extract in Rats
Publication History
received 28 April 2016
accepted 18 June 2016
Publication Date:
04 August 2016 (online)
![](https://www.thieme-connect.de/media/drugres/201610/lookinside/thumbnails/2016-04-1184_10-1055-s-0042-111904-1.jpg)
Abstract
A simple, rapid, and specific high-performance liquid chromatograph coupled with a tandem mass spectrometry method has been developed and validated for the quantification of ginkgolides in rat plasma, and the main pharmacokinetic parameters of ginkgolides after oral administration of Ginkgo biloba extract (GBE) was acquired.
Methods: Plasma samples were pretreated with ethyl acetate extraction. Sulfamethoxazole was used as the internal standard (IS). Chromatographic separation was achieved on an Eclipse XDB-C18 column (2.1 mm×150 mm, 5 μm) with a mobile phase consisting of methanol/0.1% formic acid water (gradient elution: 0~25 min (77:23)→(60:40), V/V) at a flow rate of 0.3 mL·min−1. The detection was performed on a triple quadruple tandem mass spectrometer using an electrospray ionization (ESI) source for 25 min. The detection was operated by multiple reaction monitoring(MRM) under negative ionization mode of the transitions of m/z 325→163 for BB, 469→423 for GJ, 439→125 for GC, 453→351 for GA, 423→367 for GB and of m/z 252→156 for sulfamethoxazole (IS) respectively.
Results: The pharmacokinetic properties of BB, GJ, GA, GB and GC were in line with the open 2-compartment model after oral administration of GBE in rats; The pharmacokinetic parameters of various lactones were calculated, and drugs-time curve and the curve fitting diagram of 5 ginkgolides were drew; The absorption and distribution rate of BB, GJ, GA, GB and GC were fast in rats in vivo, and half-life of absorption was less than 3 h.
Conclusion: The developed LC-ESI (-)/MS/MS (QQQ) method was successfully applied to assess the pharmacokinetic parameters and oral bioavailability of ginkgolides in rats after administration of GBE, which can provide basis for further clinical efficacy studies.
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