齐拉西酮片在健康人体的药代动力学和相对生物利用度

目的 研究齐拉西酮片在健康人体内的药代动力学以及与齐拉西酮胶囊的相对生物利用度并评价这两种制剂的生物等效性.方法 20名健康志愿者随机双交叉单剂量口服40 mg齐拉西酮片或胶囊后,分别于服药后48 h内多点抽取静脉血;用高效液相色谱法测定血浆中齐拉西酮浓度.采用DAS药代动力学软件计算齐拉西酮的药代动力学参数,按公式(F=AUC_(0-t)/AUC_(0-t)×100%)计算相对生物利用度并评价生物等效性.结果 单剂量口服试验和参比制剂后血浆中齐拉西酮主要药代动力学参数如下:C_(max)分别为(170.7±71.3)和(174.4±81.6)ng·ml~(-1);t_(max)分别为(3.73±1.87)和(3.69±1.84)h;t_(1/2)加分别为(5.57±1.62)和(5.61±1.73)h;AUC_(0-t).分别为(1273±252.3)和(1296±266.9)ng·h·ml~(-1);AUC_(0-∞)分别为(1396+-276.9)和(1407+281.5)ng·h·ml~(-1).试验制剂与参比制剂的人体相对生物利用度为(98.3+-12.6)%.主要药动力学参数进行方差分析和双单侧t检验,t_(max)采用非参数检验,结果显示差异无统计学意义.结论 齐拉西酮片与齐拉西酮胶囊具有生物等效性.

Abstract：

Objective To investigate the pharmacokinetics and bioavailability of ziprasidone tablets in Chinese healthy volunteers. Methods A randomized crossover study was performed in 20 healthy volunteers, who received a single oral dose (40 mg) of the test or reference preparation of ziprasidone. Blood samples were collected from the subjects at different time points following the drug administration, and the plasma concentration of ziprasidone was determined using high-performance liquid chromatography. The pharmacokinetic parameters were analyzed by DAS software and the relative bioavailability was calculated according to the formula F=A UC_t/AUC_r×100%. Results For the test and reference preparation, the pharmacokinetics parameter C_(max) was 170.7±71.3 and 174.4±81.6 ng/ml, t_(max) 3.73+1.87 and 3.69+1.84 h, t_(1/2) 5.57±1.62 and 5.61±1.73 h, A UC_(0-t)1273±252.3 and 1296±266.9 ng·h·ml~(-1), and AUC_(0-∞)1396±276.9 and 1407±281.5 ng·h·ml~(-1), respectively, with the relative bioavailability of (98.3 ±12.6)%. No significant differences were found in the main parameters of the test and reference preparations as analyzed by ANOVA and two- and one-side t-test. Conclusion The test and reference preparation of ziprasidone are bioequivalent.

Pharmacokinetics and relative bioavailability of ziprasidone tablets in Chinese healthy volunteers

Objective To investigate the pharmacokinetics and bioavailability of ziprasidone tablets in Chinese healthy volunteers. Methods A randomized crossover study was performed in 20 healthy volunteers, who received a single oral dose (40 mg) of the test or reference preparation of ziprasidone. Blood samples were collected from the subjects at different time points following the drug administration, and the plasma concentration of ziprasidone was determined using high-performance liquid chromatography. The pharma...