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机构地区:[1]石家庄市宏昌药业有限公司,河北无极052460
出 处:《河南大学学报(医学版)》2005年第3期29-31,共3页Journal of Henan University:Medical Science
摘 要:目的:了解不同厂家阿替洛尔片的药动学特征和相对生物利用度的差异。方法:将22名健康受试者交叉单剂量口服受试药(T)和参比药(R)50mg后,用HPLC荧光检测法检测不同时间的血药浓度,用非房室模型计算药动学参数,并对Cmax、Tmax和AUC0→24进行生物等效性分析。结果:受试药(T)和参比药(R)的达峰时间(Tmax)分别为(2.61±0.75)h和(2.52±0.65)h;峰浓度(Cmax)分别为(322.9±107.4)ng/mL和(325±126.1)ng/mL;消除半衰期(t1/2β)分别为(5.69±1.11)h和(5.36±1.16)h;AUC0→24分别为(2587.4±808.0)ng/mL.h、(2571.3±810.4)ng/mL.h,AUC0→∞分别为(2739.8±809.7)ng/mL.h和(2704.7±823.2)ng/mL.h。结论:2家阿替洛尔片为生物等效制剂,受试药物对参比药物的相对生物利用度为(100.6±33.0)%。Objective: To study difference in pharmacokinetices and relative bioavailability of atenolol produced by difference factories. Methods: A single oral dose of 50mg atenolol tablets was given respectively to 22 healthy voluntees in an open randomized crossover test. Atenolol concentration was determined by SPE - HPLC . Pharmacokinetic parametres were calculated by non - compartment model. Bioequivalence analysis was done to Cmax ,Tmax and AUC0→24. Results: The main pharmacokinetics of the two products( test and reference) were as follow. Tmax= were(2.61 ± 0.75) h and(2.52 ± 0.65) h, ( P 〉 0.05) ; Cmax were(322. 9 ± 107.4) ng/mL and( 325 ± 126.1) ng/mL( P 〉 0.10) ; t1/2β were( 5.69 ± 1.11) h and (5.36 ± 1.16) h; AUC0→24 were(2587.4 ± 808.0) ng/mL·h and(2571.3 ± 810.4) ng/mL·h; AUC0→24 were( 2739.8 ± 809.7) ng/mL·h and(2704.7 ± 823.2) ng/mL· h. Conclusion: The two products were bioequivalent, the relative bioavailability was( 100.6 ±33.0) %.
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