摘要
目的:研究重组巴曲酶(rBAT)在猕猴体内的药动学。方法:用Iodogen法制备^125I-rBAT,然后采用交叉试验设计,分别给猕猴静脉注射不同剂量和肌内注射^125I-rBAT,用酸沉淀法测定血清^125I-rBAT浓度,计算药动学参数。结果:猕猴单次静脉注射0.1,0.4和1.6ug·kg^-1的^125I-rBAT后,末端半衰期t1/2分别为(1.9±0.8),(2.5±0.5)和(2.3±0.4)h,AUC0-12h分别为(4.1±1.4),(17.3±3.8)和(63.3±16.6)ng·h·mL^-1。肌内注射0.4ug·kg^-2的^125I-rBAT后,AUC0-12h为(3.6±0.4)ng·h·mL^-1,t1/2为(3.2±0.9)h,Tmax为(3.3±0.6)h,Cmax为(0.7±0.1)ng·mL^-1,肌内注射的AUC0-12h显著低于同剂量静脉注射的AUC0~12h,肌内注射的生物利用度为(20.8±2.3)%。结论:重组巴曲酶在猕猴体内的药动学过程符合线性药动学。
Objective: To study the pharmacokinetic profile of recombinant human batroxobin (rBAT) in rhesus monkeys. Methods: ^25I-rBAT was labeled using an iodogen method. The rhesus monkeys were injected with a single cross-over intravenous dose of 0. 1,0. 4 or 1.6ug· kg^-1 of ^125I-rBAT or a single intramuscular dose of 0. 4ug· kg^-1 of ^125I-rBAT. The ^125I-rBAT levels were assayed by acid precipitation and TCA acid base radioactivity. Results: The pharmacokinetic profile of three i.v. dose was as follows: t1/2(1.9 ±0.8),(2.5 ±0.5)and(2.3 ±0.4)h and AUC0-12h(4.1 ±1.4), (17.3 ± 3.8) and (63.3 ± 16.6 ) ng·h·mL^-1, respectively; For the i.m. dose, the PK parameters were AUC0-12h of(3.6±0.4)ng·h· mL^-1 , t1/2 of(3.2±0. 9)h, Tmax of(3.3±0.6)h and Cmax of(0.7± 0.1 ) ng· mL^-1 . The bioavailability of the intramuscular injection of rBAT was (20. 8 ± 2.3) %. Conclusion: The rBAT for injection featured a linear pharmacokinetic profile in the rhesus monkey model.
出处
《中国新药杂志》
CAS
CSCD
北大核心
2007年第3期222-225,共4页
Chinese Journal of New Drugs
关键词
重组巴曲酶
药动学
猕猴
recombinant human batroxobin
pharmacokinetics
rhesus monkey