Simultaneous quantification of cryptotanshinone and its active metabolite tanshinone IIA in plasma by liquid chromatography/tandem mass spectrometry (LC-MS/MS)

被引:48
作者
Hao, HP [1 ]
Wang, GJ [1 ]
Li, P [1 ]
Li, J [1 ]
Ding, ZQ [1 ]
机构
[1] China Pharmaceut Univ, Key Lab Drug Metab & Pharmacokinet E04, Nanjing 210038, Peoples R China
关键词
tanshinone IIA; cryptotanshinone; simultaneous quantification; LC-MS/MS; pharmacokinetics;
D O I
10.1016/j.jpba.2005.07.029
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A rapid and sensitive method for the simultaneous determination of cryptotanshinone and its active metabolite tanshinone IIA in rat plasma was developed and well validated, using high-performance liquid chromatographic separation with tandem mass spectrometric detection. This method entailed a single step of liquid-liquid extraction with ethyl acetate from a small volume of plasmas. The analytes and internal standard diazepam were baseline separated on a Shim-pack VP-ODS analytical column. Detection was performed on a triple quadrupole tandem mass spectrometer equipped with electrospray ionization source operated under selected reaction monitoring (SRM) mode. The method was linear in the concentration range of 1-100 ng/ml for both tanshinone IIA and cryptotanshinone. The intra- and inter-day precisions (R.S.D.%) were within 10.2% for both analytes. Deviation of the assay accuracies was within +/- 12.0% for both analytes. Both analytes were proved to be stable during all sample storing, preparation and analytic procedures. The method was successfully applied to a pharmacokinetic study after an oral administration of cryptotanshinone to rats with a dose of 20 mg/kg. With the lower limits of quantification at 1.0 ng/ml for tanshinone IIA and 0.2 ng/ml for cryptotanshinone, this method was proved to be sensitive enough and reproducible for the pharmacokinetics study of both tanshinones. (c) 2005 Elsevier B.V. All rights reserved.
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页码:382 / 388
页数:7
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