机构地区:[1]天津中医药大学,天津300193 [2]天津天士力研究院,天津300410 [3]上海第二军医大学药学院,上海200085
出 处:《中国新药杂志》2011年第9期785-790,共6页Chinese Journal of New Drugs
基 金:国家"重大新药创制"科技重大专项(2008ZX09401-406)
摘 要:目的:建立同时测定大鼠血浆中水飞蓟宾和丹参素浓度的液相色谱-串联质谱法(LC-MS/MS),并用于水飞蓟宾-丹参素钠复方注射剂在大鼠体内的药动学研究。方法:血浆样品经乙酸乙酯液-液萃取后,以甲醇-0.2%甲酸水溶液(80∶20)为流动相,Zorbax Eclipse XDB-C18(150 mm×4.6 mm,3.5μm)色谱柱分离,采用电喷雾离子化源(ESI)三重四极杆串联质谱,以选择反应监测模式(SRM)进行检测。用于定量分析的离子反应m/z分别为481.1→300.9(水飞蓟宾)、196.9→135.1(丹参素)和153.0→109.1(内标,原儿茶酸)。结果:水飞蓟宾和丹参素分别在10~10 000 ng.mL-1和20~20 000 ng.mL-1浓度范围内呈良好的线性关系,最低定量下限(LLOQ)分别为10和20 ng.mL-1。方法的精密度、准确度和稳定性均符合要求。大鼠静脉注射低、中、高3个剂量的水飞蓟宾-丹参素钠复方注射剂后水飞蓟宾的主要药动学参数为:t1/2分别为(2.30±0.45)、(2.11±0.43)、(2.40±0.36)h,Ke分别为(0.31±0.06)、(0.34±0.07)、(0.30±0.04)h-1,AUC0~8 h分别为(3 264.0±789.4)、(7 706.1±1 750.0)、(21 171.1±5 018.7)ng.h.mL-1,AUC0~∞分别为(3 330.3±800.1)、(7 899.5±1 750.0)、(21 791.0±5 048.1)ng.h.mL-1;丹参素的主要药动学参数为:t1/2分别为(1.98±0.47)、(1.70±0.18)、(2.04±0.25)h,Ke分别为(0.37±0.10)、(0.41±0.04)、(0.34±0.04)h-1,AUC0~8 h分别为(3 758.9±1 066.1)、(7 065.8±921.5)、(17 228.5±3 705.2)ng.h.mL-1,AUC0~∞分别为(3 885.8±1152.1)、(7 250.7±923.1)、(17 791.3±3 720.2)ng.h.mL-1。结论:本方法具有专属性强、灵敏度高等优点,适用于复方制剂中水飞蓟宾和丹参素的临床前药动学研究。Objective:To develop a liquid chromatographic-tandem mass spectrometric method(LC-MS/MS) for simultaneous determination of silybin and danshensu in rat plasma,and to applied this method to investigate the pharmacokinetics of silybin and Danshensu in rats after a single intravenous administration of silybin-Danshensu sodium compound injection as well.Methods:Silybinin,Danshensu and protocatechuic acid(as an internal standard) were extracted from plasma with liquid-liquid extraction by ethyl acetate,and then separated on a Zorbax Eclipse XDB-C18(150 mm×4.6 mm,3.5 μm) column using the mobile phase consisted of methanol-0.2% formic acid(80∶20).The electrospray ionization(ESI) source was applied and operated under the selected reaction monitoring(SRM) mode.Silybin was detected at m/z 480.6→300.9,Danshesnu at m/z 196.8→135.1 and protocatechuic acid at m/z 153.0→109.1.Results:The linear calibration curves were obtained at the concentration ranges of 10~10 000 ng·mL-1 and 20~20 000 ng·mL-1 for silybin and Danshensu,respectively.The lower limits of quantitation(LLOQ) were 10 ng·mL-1 and 20 ng·mL-1 for silybin and Danshensu,respectively.The precisions(inter-and intra-day),accuracy(relative error,RE) and stability of the analytes met the requirements.After intravenous administration of silybin-Danshensu sodium compound injection in rats,the pharmacokinetic parameters of silybin were as follows:the t1/2 were(2.30±0.45),(2.11±0.43) and(2.40±0.36) h;the Ke were(0.31±0.06),(0.34±0.07) and(0.30±0.04) h-1;the AUC0~8 h were(3 264.0±789.4),(7 706.1±1 750.0) and(21 171.1±5 018.7) ng·h·mL-1;the AUC0~∞ were(3 330.3±800.1),(7 899.5±1 750.0) and(21 791.0±5 048.1) ng·h·mL-1,respectively.The pharmacokinetic parameters of Danshensu were as follows:the t1/2 were(1.98±0.47),(1.70±0.18) and(2.04±0.25) h;the Ke were(0.37±0.10),(0.41±0.04) and(0.34±0.04) h-1;the AUC0~8 h were(3 758.9±1 06
关 键 词:水飞蓟宾 丹参素 高效液相色谱-串联质谱法(LC-MS/MS) 药动学
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