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采用正负离子切换模式的LC-ESI-MS/MS法测定大鼠灌胃给药后京尼平苷的血浆浓度

邓志鹏, 范惠霞, 仲浩, 崔淑香, 姚庆强*   

  1. 山东省医学科学院 药物研究所, 山东 济南 250062
  • 收稿日期:2012-08-29 修回日期:2012-12-20 出版日期:2013-05-08 发布日期:2013-05-08
  • 通讯作者: 姚庆强*

Development of a method for the quantitative determination of geniposide in rat plasma by ......

Zhipeng Deng, Huixia Fan, Hao Zhong, Shuxiang Cui, Qingqiang Yao*   

  1. Institute of Materia Medica, Shandong Academy of Medical Sciences, Jinan 250062, China
  • Received:2012-08-29 Revised:2012-12-20 Online:2013-05-08 Published:2013-05-08
  • Contact: Qingqiang Yao*

摘要:

建立了一种快速、专属性强的液相色谱-串联质谱方法 (LC-MS/MS) 测定中药栀子的主要活性成分-京尼平苷的大鼠血药浓度去评价其临床前药动学特征。京尼平苷血浆样品经沉淀蛋白后, 采用Diamonsil® C18色谱柱进行分析, 采用流动相10 mM 醋酸铵-甲醇 (20:80, v/v), 流速0.6 mL/min。样品测定采用 “Truncated” 多反应检测模式, 采用正离子m/z 411→411测定京尼平苷, 采用负离子m/z 415→295测定内标葛根素。线性浓度范围为10.0-5000 ng/mL, 最低定量下限为10.0 ng/mL, 样品提取回收率范围为84.8%-90.5%。该确证方法成功应用于大鼠灌胃 (给药剂量200 mg/kg) 给予京尼平苷后的药动学研究。

关键词: LC-MS/MS, 蛋白沉淀, 大鼠血浆, 药动学, 京尼平苷

Abstract:

Geniposide is a major bioactive constituent isolated from Gardenia jasminoides Ellis. To evaluate the pharmacokinetics of geniposide in pre-clinical studies, a rapid and specific liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated. After simple protein precipitation, geniposide was analyzed on a Diamonsil® C18 column with a mobile phase of 10 mM ammonium acetate and methanol (20:80, v/v) at a flow rate of 0.6 mL/min. Detection was performed in "Truncated" multiple-reaction monitoring (MRM) mode with positive electrospray ionization (ESI) at m/z 411→411 for geniposide, and MRM mode with negative ESI ionization at m/z 415→295 for puerarin (internal standard, IS). Linearity was established in the concentration range from 10.0 to 5000 ng/mL. The extraction recoveries ranged from 84.8% to 90.5% at concentrations of 10.0, 500 and 4.5×103 ng/mL. The lower limit of quantification (LLOQ) was 10.0 ng/mL with 50 µL plasma. The validated method was successfully applied to the pharmacokinetic study of geniposide in rats at a dose of 200 mg/kg by oral administration.

Key words: LC-MS/MS, Protein precipitation, Rat plasma, Pharmacokinetics, Geniposide

中图分类号: 

Supporting:

Foundation item: Laboratory for Rare Disease of Shandong Province.
*Corresponding author. Tel.: 86-0531-82919960