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两种进口盐酸文拉法辛缓释胶囊在健康人体内的药动学和生物等效性 被引量:7

Pharmacokinetics and bioequivalence of two imported hydrochloride venlafaxine extended- release capsules in healthy volunteers
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摘要 目的比较两种进口盐酸文拉法辛缓释胶囊在健康人体内的药动学及生物等效性。方法 28名中国健康男性受试者随机交叉、单次及多次口服盐酸文拉法辛缓释胶囊受试制剂和参比制剂150 mg后,采用经验证的液相色谱-串联质谱法(LC-MS/MS)测定血浆中文拉法辛(VEN)及其活性代谢产物O-去甲基文拉法辛(ODV)的浓度,经DAS 2.1软件计算药动学参数,经BAPP 2.1软件进行生物等效性统计分析。结果单次口服受试制剂和参比制剂后,血浆中VEN的ρmax、tmax、AUC0-t和t1/2分别为(108.8±49.0)和(126.6±48.1)μg.L-1、(11.2±3.9)和(6.5±1.2)h、(2 456.9±1 647.2)和(2 438.8±1 599.0)μg.h.L-1、(12.0±6.2)和(9.5±2.4)h,ODV的ρmax、tmax、AUC0-t和t1/2分别为(178.2±51.6)和(189.1±52.6)μg.L-1、(16.2±5.9)和(10.8±2.9)h、(5 690.5±1 267.0)和(5 621.6±1 210.6)μg.h.L-1、(13.1±3.0)和(13.4±3.6)h,VEN和ODV受试制剂的生物利用度分别为(101.6±19.1)%和(101.7±11.2)%。多次口服受试制剂和参比制剂6 d后,VEN的tmax、AUCss和DF(%)分别为(8.2±1.8)和(6.7±1.2)h、(2 759.2±1 508.3)和(2 644.3±1 431.4)μg.h.L-1、(93.2±33.4)%和(95.3±22.2)%,ODV的tmax、AUCss和DF(%)分别为(9.9±2.4)和(9.8±1.6)h、(5 396.6±1 502.1)和(5 123.4±1 194.9)μg.h.L-1、(37.9±17.0)%和(39.5±10.1)%,VEN和ODV受试制剂的生物利用度分别为(106.5±20.0)%和(105.3±13.6)%。单次和多次给药后,受试制剂VEN和ODV的药动学参数ρmax和AUC的90%置信区间(CI),均在参比制剂的生物等效标准范围之内。结论两种进口盐酸文拉法辛缓释胶囊在人体内具有生物等效性。 AIM To evaluate the pharmacokinetics and bioequivalence of two imported hydrochloride venlafaxine extendedrelease capsules in healthy volunteers. METHODS Twentyeight Chinese healthy male volunteers were randomly administered a single and multiple 150 mg oral dose of the test and reference capsules, The plasma concentrations of venlafaxine and O- desmethylvenlafaxine were determined by a validated liquid chromatographytandem mass spectrometry (LC- MS/MS) method, and the pharmacokinetic parameters and bioequivalence of the two capsules were analyzed using DAS 2.1 software and BAPP 2.1 software, respectively. RESULTS The pharmacokinetic parameters of venlafaxine after single dose for the test and reference capsules were as follows: Pm,x (108.8± 49.0) VS. (126.6 ± 48.1) g.L-1, μx (11.2 ± 3.9) vs. (6.5 ± 1.2) h, AUC0-, (2 456.9 ± 1 647.2) vs. (2 438.8 ± 1 599.0) μg.h.L-1, tl/2 (12.0 ± 6.2) vs. (9.5 ± 2.4) h, and the corresponding parameters of O- desmethylvenlafaxine were ( 178.2 ± 51.6) vs. ( 189.1 ± 52.6) μg. L-1, ( 16.2 ± 5.9) vs. (10.8 -± 2.9) h, (5 690.5 ± 1 267.0) vs. (5 621.6 ± l 210.6) μg.h.L-1, and (13.1 ± 3.0) vs. (13.4 ± 3.6) h. The relative bioavailability of venlafaxin and O-desmethylvenlafaxine for the test formulation were (101.6 ± 19.1) % and (101.7 ± 11.2) %, respectively. The pharmacokinetie parameters tm, AUC and DF (%) of venlafaxine after multiple doses for 6 d for the test and reference eapsules were as follows: (8.2 ± 1.8) vs. (6.7 ± 1.2) h, (2 759.2 ± 1 508.3) vs. (2 644.3 ± 1 431.4) pg-h.L-1, (93.2 ± 33.4) % vs. (95.3 ± 22.2) %, and the corresponding parameters of O-desmethylvenlafaxine were (9.9 ± 2.4) vs. (9.8 ± 1.6) h, (5 396.6 ± 1 502.1) vs. (5 123.4 ± 1 194.9) μg.h.L-1, (37.9 ± 17.0) % vs. (39.5 ± 10.1) %. The relative bioavailability of venlafaxin and O-desmethylvenlafaxine for the test formulation were (106.5 ± 20.0) % and ( 105.3 ± 13.6) %, respectively. The 90% confidence intervals (CI) of p, and AUC of venlafaxin and O - desmethylvenlafaxine for the test preparation after single and multiple oral doses were all within the bioequivalence criteria. CONCLUSION The two imported hydroehloride venlafaxine extended-release capsules were considered bioequivalent in human.
出处 《中国新药与临床杂志》 CAS CSCD 北大核心 2013年第3期226-231,共6页 Chinese Journal of New Drugs and Clinical Remedies
基金 上海市科委科研计划项目(08411966700)
关键词 文拉法辛 O-去甲基文拉法辛 药动学 生物等效性 迟效制剂 preparationsvenlafaxine 0 - desmethylvenlafaxine pharmacokinetics bioequivalence delayed- action
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参考文献12

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