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HPLC-MS测定人血浆中雷米普利和雷米普利拉浓度及其生物等效性研究
引用本文:冯桂梅,朱运贵. HPLC-MS测定人血浆中雷米普利和雷米普利拉浓度及其生物等效性研究[J]. 中南药学, 2010, 8(9): 664-668. DOI: 10.3969/j.issn.1672-2981.2010.09.008
作者姓名:冯桂梅  朱运贵
作者单位:1. 湖南航天医院,长沙,410007
2. 中南大学湘雅二医院,长沙,410011
摘    要:目的研究雷米普利片在健康人体内的相对生物利用度,并且进行生物等效性评价。方法采用随机交叉、自身对照试验设计,18名健康男性受试者随机等分成2组,先后单剂量口服2×5 mg雷米普利片受试制剂或参比制剂后,在设计时间点取静脉血,采用HPLC-MS法测定雷米普利及其活性代谢产物雷米普利拉的血浆浓度,计算主要药物代谢动力学参数。以方差分析方法对主要药物代谢动力学参数进行均数的差别检验,以双单侧t检验进行生物等效性判定。结果受试者分别口服受试制剂和参比制剂后,雷米普利的主要药物代谢动力学参数如下:AUC0~12、AUC0~∞、tmax、Cmax、t1/2分别为(73.5±46.9)μg.h.L-1和(76.9±44.5)μg.h.L-1、(80.5±47.3)μg.h.L-1和(84.8±47.2)μg.h.L-1、(0.7±0.2)h和(0.7±0.2)h、(41.67±26.02)μg.L-1和(42.48±27.88)μg.L-1、(5.0±1.7)h和(4.5±1.9)h。以雷米普利计算受试制剂对参比制剂的相对生物利用度为(95.55±17.36)%。雷米普利拉的主要药物动力学参数如下:AUC0~72、AUC0~∞、tmax、Cmax、t1/2分别为(146.7±43.8)μg.h.L-1和(148.2±42.2)μg.h.L-1、(160.5±49.2)μg.h.L-1和(159.0±45.4)μg.h.L-1、(1.7±0.7)h和(1.5±0.4)h、(13.34±6.86)μg.L-1和(15.01±9.13)μg.L-1、(22.7±5.2)h和(19.2±4.5)h。以雷米普利拉计算受试制剂对参比制剂的相对生物利用度为(99.03±13.75)%。结论受试制剂与参比制剂的主要药动学参数之间无统计学差异,受试制剂与参比制剂为生物等效制剂。

关 键 词:雷米普利  雷米普利拉  药动学  生物等效性  HPLC-MS

HPLC-MS determination of ramipril and ramiprilat in human plasma and its bioequivalence
FENG Gui-mei,ZHU Yun-gui. HPLC-MS determination of ramipril and ramiprilat in human plasma and its bioequivalence[J]. Central South Pharmacy, 2010, 8(9): 664-668. DOI: 10.3969/j.issn.1672-2981.2010.09.008
Authors:FENG Gui-mei  ZHU Yun-gui
Affiliation:1.Hunan Space Hospital,Changsha 410007;2.Second Xiangya Hospital,Central South University,Changsha 410011)
Abstract:Objective To study the pharmacokinetic parameters and bioavailability of ramipril tablets.Methods A cross-over,randomized study was performed in 18 healthy male volunteers receiving a single oral dose of 2×5 mg of test or reference ramipril tablets.A sensitive and specific HPLC-MS method was developed to quantitate the concentration of ramipril and its active metabolite ramiprilat in the plasma.The pharmacokinetic parameters were analysed by 2 one-sided t-tests to determine the bioequivalence of the two preparations.Results The main pharmacokinetic parameters AUC0~12,AUC0~∞,tmax,Cmax,and t1/2 of ramipril test and reference preparations were as follows:(73.5±46.9)μg·h·L-1 and(76.9±44.5)μg·h·L-1,(80.5±47.3)μg·h·L-1 and(84.8±47.2)μg·h·L-1,(0.7±0.2)h and(0.7±0.2)h,(41.67±26.02)μg·L-1 and(42.48±27.88)μg·L-1,(5.0±1.7)h and(4.5±1.9)h.The relative bioavailability of ramipril was(95.55±17.36)%.The main pharmacokinetic parameters AUC0~72,AUC0~∞,tmax,Cmax,and t1/2 of ramiprilat test and reference preparations were as follows:(146.7±43.8)μg·h·L-1 and(148.2±42.2)μg·h·L-1,(160.5±49.2)μg·h·L-1 and(159.0±45.4)μg·h·L-1,(1.7±0.7)h and(1.5±0.4)h,(13.34±6.86)μg·L-1 and(15.01±9.13)μg·L-1,(22.7±5.2)h and(19.2±4.5)h.The relative bioavailability of ramiprilat was(99.03±13.75)%.Conclusion There is no significant difference in the main pharmacokinetic parameters of ramipril and ramiprilat between the test and reference preparations.The test and reference preparations are bioequivalent.
Keywords:HPLC-MS
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