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液相色谱-串联质谱法测定人血浆中伪麻黄碱及其药动学研究
引用本文:黄凤英,刘善军,刘丙桂.液相色谱-串联质谱法测定人血浆中伪麻黄碱及其药动学研究[J].中南药学,2009,7(11):835-840.
作者姓名:黄凤英  刘善军  刘丙桂
作者单位:1. 湖南省娄底卫校附属医院,湖南,娄底
2. 中国药科大学药学院,南京,210009
摘    要:目的建立人血浆中伪麻黄碱含量的液相色谱-串联质谱(LC-MS/MS)测定法,并对其进行人体药动学研究。方法血样用甲醇沉淀、离心后进行质谱分析,色谱柱:Agilent ZORBAX SB C18(100 mm×3.5 mm,3.0μm);流动相:甲醇-水(含10 mmol.L-1乙酸铵,0.05%甲酸)=28∶72(v/v);质谱条件:气动辅助电喷雾离子化(ESI),正离子检测,选择性多反应检测(SRM):伪麻黄碱,166.1〉148.1;内标:帕罗西汀,330.1〉192.1。测定20名健康受试者口服受试制剂(单剂量、多剂量)后血浆中伪麻黄碱浓度。结果线性范围1-600μg.L-1,最低定量限(LLOQ)为1.0μg.L-1,绝对回收率为85.8%-87.6%。单剂量口服伪麻黄碱(120、240 mg)后药动学参数:t1/2为(6.8±0.9)、(6.6±1.3)h,tmax为(6.1±1.6)、(7.4±3.8)h,Cmax为(210.44±41.59)、(465.26±87.65)μg.L-1,V为(398.12±91.05)、(353.52±102.34)L,CL为(42.57±9.02)、(39.69±8.87)L.h-1,AUC0-48为(3 256.12±711.26)、(6 954.52±1 955.27)μg.h.L-1,MRT0-48为(11.71±0.89)、(11.87±1.26)h;伪麻黄碱多剂量(120 mg,bid)药动学参数:Cmax为(398.08±102.56)μg.L^-1,V为(309.66±82.37)L,CL为(37.51±7.23)L.h^-1,AUC0-48为(5 463.24±2 256.39)μg.h.L^-1,Cav为(282.11±92.19)μg.L-1,DF为(0.61±0.15),AUCss为(3 372.85±1 328.78)μg.h.L^-1。结论本方法结果准确、灵敏,伪麻黄碱主要药动学参数与国内外文献报道基本一致。

关 键 词:伪麻黄碱  药动学  液相色谱-串联质谱法

Determination of pseudephedrine in human plasma by LC-MS/MS and its pharmacokinetics
HUANG Feng-ying,LIU Shan-Jun,LIU Bing gui.Determination of pseudephedrine in human plasma by LC-MS/MS and its pharmacokinetics[J].Central South Pharmacy,2009,7(11):835-840.
Authors:HUANG Feng-ying  LIU Shan-Jun  LIU Bing gui
Institution:1. Affiliated Hospital of Loudi Health School, Loudi Hunan 417000; 2. School of Pharmacy, China Pharmaceutical University, Nanjing 210009)
Abstract:Objective To determine the pharmacokinetics of pseudoephedrine in human plasma by LC-MS/MS.Methods Plasma and methanol were vortexed and centrifuged,and the clear supernate was analyzed by Agilent ZORBAX SB C18(100 mm×3.5 mm,3.0 μm) column with the mobile phase of methanol-water(10 mmol·L-1 ammonium acetate,0.05% formic acid)=28∶72(v/v).LC-ESI-MS/MS was used in the selected reaction monitoring(SRM) mode with target ions at m/z 166.1〉148.1 for pseudoephedrine and m/z 330.1〉192.1 for the internal standard.Twenty healthy volunteers received pseudoephedrine tablets(single doses and multidoses),and drug concentrations in the plasma were determined.Results Pseudoephedrine was linear at 1-600 μg·L-1.The lower limit of quality was 1.0 μg·L-1 and the absolute recovery was 85.8%-87.6%.Pharmacokinetic parameters of pseudoephedrine after single oral doses(120 and 240 mg) were as follows:t1/2:(6.8±0.9) and(6.6±1.3) h,tmax:(6.1±1.6) and(7.4±3.8) h,Cmax:(210.44±41.59) and(465.26±87.65)μg·L-1,V:(398.12±91.05) and(353.52±102.34) L,CL:(42.57±9.02) and(39.69±8.87) L·h-1,AUC0-48:(3 256.12±711.26) and(6 954.52± 1 955.27)μg·h·L-1,MRT0-48:(11.71±0.89) and(11.87±1.26) h.The essential pharmacokinetic parameters after the oral multidoses(120 mg,bid)were as follows:Cmax(398.08±102.56)μg·L-1,V(309.66±82.37) L,CL(37.51±7.23) L·h-1,AUC0-48(5 463.24±2 256.39)μg·h·L-1,Cav(282.11±92.19)μg·L-1,DF(0.61±0.15),and AUCss(3 372.85±1 328.78)μg·h·L-1.Conclusion The method is accurate and sensitive,and the main pharmacokinetic parameters are similar to those reported home and abroad.
Keywords:pseudoephedrine  pharmacokinetics  LC-MS/MS
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