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作 者:褚扬[1] 闫凯境 李伟[1] 马晓慧[1] 王国成[1] 宋心瑀 吕芙蓉[2] 周水平[1] 刘昌孝[3]
机构地区:[1]天士力控股集团有限公司天士力研究院,天津300410 [2]天士力控股集团有限公司天津天士力医药营销集团有限公司,天津300410 [3]天津药物研究院药动学与药效动力学省部共建国家重点实验室,天津300193
出 处:《中国新药杂志》2015年第4期395-399,共5页Chinese Journal of New Drugs
基 金:国家"重大新药创制"科技重大专项(2013ZX09402202)
摘 要:目的:研究国产与进口替莫唑胺胶囊在Beagle犬体内的药动学及生物等效性。方法:6只Beagle犬随机交叉单剂量口服进口替莫唑胺胶囊(参比制剂)和国产替莫唑胺胶囊(受试制剂),采用HPLC法测定犬血浆中替莫唑胺的浓度,Bapp3.0软件计算其主要药动学数据,并进行两种制剂的等效性评价。结果:参比制剂与受试制剂的Cmax分别为(11.35±1.55)和(11.70±2.77)μg·mL^-1;Tmax分别为(0.97±0.56)和(1.08±0.49)h;t1/2β分别为(1.44±0.37)和(1.43±0.24)h;AUC0-1。分别为(27.34±2.30)和(28.34±7.47)μg·mL^-1,AUC00-∞分别为(29.85±4.49)和(30.85±8.46)μg·mL^-1。受试制剂对参比制剂的相对生物利用度为(106.1±36.1)%。结论:本实验结果表明,两种替莫唑胺胶囊在Beagle犬体内具有生物等效性。Objective: To investigate the pharmacokinetics and bioequivalence of domestic and imported temozolomide capsules in Beagle dogs. Methods: In a two-way crossover trial, six Beagle dogs randomly received a single crossover oral dose of domestic (test preparation) and imported (reference preparation) temozolomide capsules. The concentration of temozolomide in dog plasma was determined by HPLC. By using Bapp 3.0 software, the pharmacokinetic parameters were calculated and the bioequivalence of the two preparations was evaluated. Resuits : The main pharmacokinetic parameters of the test and reference capsules were as follows : Cmax were ( 11.35 ± 1.35) and (11.70 ±2.77)μg·mL^-1; Tmax were (0.97 ±0.56) and (1.08 ±0.49) μg·mL-1 were (1.44 ±0.37) and (1.43 ±0.24) h; AUC0twere (27.34±2.30) and (28.34 ±7.47) μg·mL^-1,AUC0 were (29.85± 4.49) and (30. 85 ±8.46) μg·mL^-1, respectively. The relative bioavailability of the test capsules was(106.1± 36.1 )%. Conclusion: The test and reference temozolomide capsules meet the regulatory criteria for the pharmacokinetic equivalence, thus are bioequivalent in Beagle dogs.
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