Development of a method for the quantitative determination of geniposide in rat plasma by liquid chromatography-tandem mass spectrometry with positive/negative ion-switching electrospray ionization and its application in a pharmacokinetic study in rats  

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(英文)

作　　者：邓志鹏[1] 范惠霞[1] 仲浩[1] 崔淑香[1] 姚庆强[1] 

机构地区：[1]山东省医学科学院药物研究所,山东济南250062

出　　处：《Journal of Chinese Pharmaceutical Sciences》2013年第3期234-238,共5页中国药学（英文版）

基　　金：Laboratory for Rare Disease of Shandong Province

摘　　要：Geniposide is a major bioactive constituent isolated from Gardeniajasminoides 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 DiamonsilR 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 4.5x 103 ng/mL. The lower limit of quantification （LLOQ） was 10.0 ng/mL with 50 ~tL 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.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DiamonsilC18色谱柱进行分析,采用流动相10mM醋酸铵–甲醇(20:80,v/v),流速0.6mL/min。样品测定采用"Truncated"多反应检测模式,采用正离子m/z411→411测定京尼平苷,采用负离子m/z415→295测定内标葛根素。线性浓度范围为10.0–5000ng/mL,最低定量下限为10.0ng/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200mg/kg)给予京尼平苷后的药动学研究。

关 键 词：LC-MS/MS Protein precipitation Rat plasma PHARMACOKINETICS GENIPOSIDE 

分 类 号：R965[医药卫生—药理学]