机构地区:[1]北京大学第一医院临床药理研究所,北京100034 [2]北京大学第一医院国家药品临床研究机构,北京100034
出 处:《中国临床药理学杂志》2016年第18期1684-1688,共5页The Chinese Journal of Clinical Pharmacology
摘 要:目的研究阿莫西林/克拉维酸干混悬剂和片剂与其相应参比药品的生物等效性。方法用单中心、随机、双周期、双交叉试验设计,分2个试验进行,均按体重指数分层随机均分为2组,其中阿莫西林/克拉维酸干混悬剂生物等效性试验(试验1)受试者分别服用受试药品和参比药品914 mg;阿莫西林/克拉维酸片剂生物等效性试验(试验2)受试者分别服用受试药品和参比药品1000 mg。用经过确证的HPLC法测定血清中阿莫西林和克拉维酸的浓度,按照最佳拟合法计算两种药物的药代动力学参数。结果在试验1参比药品和受试药品中,阿莫西林的t_(max)分别为(1.30±0.44),(1.32±0.52)h;C_(max)分别为(11.56±4.24),(13.41±3.94)μg·m L^(-1);t_(1/2)分别为(1.16±0.36),(1.08±0.24)h;AUC_(0-8) h分别为(31.29±7.65),(35.52±8.17)mg·h·L^(-1);AUC_(0-∞)分别为(31.87±7.80),(36.02±8.39)mg·h·L^(-1)。克拉维酸的t_(max)分别为(1.16±0.65),(1.03±0.39)h;C_(max)分别为(1.50±0.53)和(1.57±0.55)μg·m L^(-1);t_(1/2)分别为(1.08±0.48),(1.10±0.47)h;AUC_(0-8) h分别为(2.79±0.96),(3.06±0.85)mg·h·L^(-1);AUC_(0-∞)分别为(3.06±1.10),(3.52±0.94)mg·h·L^(-1)。受试药品阿莫西林和克拉维酸的相对生物利用度分别为(115.01±19.66)%,(117.78±49.44)%。在试验2参比药品和受试药品中,阿莫西林的t_(max)分别为(1.66±0.44),(1.74±0.56)h;C_(max)分别为(11.02±3.55),(10.66±2.46)μg·m L^(-1);t_(1/2)分别为(1.29±0.26),(1.33±0.31)h;AUC_(0-8) h分别为(31.52±6.89),(31.70±5.97)mg·h·L^(-1);AUC_(0-∞)分别为(33.85±8.00),(34.15±7.08)mg·h·L^(-1)。克拉维酸的t_(max)分别为(1.26±0.35),(1.14±0.35)h;C_(max)分别为(2.02±0.58),(2.08±0.61)μg·m L^(-1);t_(1/2)分别为(0.93±0.20),(0.98±0.33)h;AUC_(0-8) h分别为(3.96±1.20),(4.10±1.10)mg·h·L^(-1);AUC_(0-∞)分别为(4.20±1.23),(4.40±1.18)mg·h·L^(-1)。受试药品阿莫西林和克拉维酸的相对生物利用度分别为(102.43±15.71)%,(106.12±14.68)%。两�Objective To study the bioequivalence of amoxicillin / clavulanic acid dry suspension and tablet in human volunteers. Methods The research was divided into 2 studies. In the first study,24 health male volunteers were treated with a dose of 914 mg of amoxicillin / clavulanic acid dry suspension( with 800 mg amoxycillin and 114 mg clavulanic acid) in a randomized crossover way. In the second study,22 healthmale volunteers were treated with a dose of 1000 mg of amoxicillin / clavulanic acid tanblet( with 875 mg amoxycillin and 125 mg clavulanic acid) also in a randomized crossover way. Serum concentrations of amoxicillin and clavulanic acid were determined by a validated HPLC and the pharmacokinetic parameters of the two preparations were analyzed by best fit method and the relative bioavailability was calculated. Results In the first study,the main pharmacokinetic parameters of amoxicillin in test preparation and reference preparation were as follows: tmaxwere( 1. 30 ± 0. 44),( 1. 32 ± 0. 52) h; Cmaxwere( 11. 56 ± 4. 24),( 13. 41 ± 3. 94) mg·L-1; t1/2were( 1. 16 ± 0. 36),( 1. 08 ± 0. 24) h;AUC0-8 hwere( 31. 29 ± 7. 65),( 35. 52 ± 8. 17) mg · h · L-1; AUC0-∞were( 31. 87 ± 7. 80),( 36. 02 ± 8. 39)mg·L-1·h respectively. The main pharmacokinetic parameters of clavulanic acid in test preparation and reference preparation were as follows: tmaxwere( 1. 16 ± 0. 65),( 1. 03 ± 0. 39) h; Cmaxwere( 1. 50 ± 0. 53),( 1. 57 ± 0. 55)mg·L-1; t1/2were( 1. 08 ± 0. 48),( 1. 10 ± 0. 47) h; AUC0-8 hwere( 2. 79 ± 0. 96),( 3. 06 ± 0. 85) mg·L-1·h;AUC0-∞were( 3. 06 ± 1. 10) and( 3. 52 ± 0. 94) mg·L-1·h respectively. The relative bioavailability of amoxycillin and clavulanic acid were( 115. 01 ± 19. 66) % and( 117. 78 ± 49. 44) % respectively. In the second study,the main pharmacokinetic parameters of amoxicillin in test preparation and reference preparation were as follows: tmaxwere( 1. 66 ± 0. 44),
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