Rapid simultaneous quantification of five active constituents in rat plasma by high-performance liquid chromatography/tandem mass spectrometry after oral administration of Da-Cheng-Qi decoction

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• 作者：Fengguo Xu ; Ying Liu ; Zunjian Zhang ; Rui Song ; Haijuan Dong ; Yuan Tian
• 关键词：Da-Cheng-Qi decoction ; Multiple constituents ; High-performance liquid chromatography/tandem mass spectrometry ; Rat plasma ; Pharmacokinetics
• 刊名：Journal of Pharmaceutical and Biomedical Analysis
• 出版年：2008
• 出版时间：15 July 2008
• 年：2008
• 卷：47
• 期：3
• 页码：586-595
• 全文大小：1007 K

文摘

A rapid, sensitive and specific liquid chromatography-electrospray ionization/tandem mass spectrometry (LC-ESI/MS/MS) method has been developed and validated for simultaneous determination of five active constituents (including magnolol, honokiol, rhein, emodin and aloe-emodin) from Da-Cheng-Qi decoction (DCQD) in rat plasma. After the addition of gliquidone as the internal standard (IS), plasma samples were prepared by one-step protein precipitation using methanol and separated by HPLC on a short reversed phase C₁₈ column packed with smaller particles (100 mm × 3.0 mm, 3.5 μm) using a mobile phase of methanol–0.1 % formic acid aqueous solution (70:30, v/v). Analytes were determined in a triple-quadrupole mass spectrometer in the selected reaction-monitoring (SRM) mode using electrospray source with negative mode. The method was proved to be rapid, sensitive, specific, accurate and reproducible and has been successfully applied to the determination of the five compounds in rat plasma after oral administration of low dose DCQD for pharmacokinetic study.