摘要
目的研究2种格列齐特缓释片的人体药物动力学及相对生物利用度。方法40例健康受试者采用随机交叉给药方案,单次或多次口服60 mg供试或参比格列齐特缓释片后,采用HPLC测定人体血浆中格列齐特的浓度,计算其药物动力学参数和相对生物利用度,评价两制剂的生物等效性。结果单次口服格列齐特缓释片供试制剂和参比制剂主要药物动力学参数Cmax分别为(2.92±1.29)和(2.73±1.39)μg.mL^-1,tmax分别为(6.9±2.1)和(6.3±2.0)h,t1/2分别为(14.63±3.06)和(15.89±3.46)h,AUC0-60分别为(53.82±17.58)和(57.11±22.67)μg.h.mL^-1。多次口服格列齐特缓释片达稳态后供试和参比制剂主要药物动力学参数Cssmax分别为(3.33±1.07)、(3.11±1.22)μg.mL^-1,Tsmsax分别为(54.3±1.9)和(54.5±2.5)h,Cmin分别为(0.20±0.19)和(0.19±0.20)μg.mL^-1,Cav分别为(1.11±0.64)和(1.10±0.63)μg.mL^-1,AUCSS分别为(119.92±68.94)和(119.10±68.20)μg.h.mL^-1。结论建立的格列齐特分析方法简单、快速、准确。2种制剂具有生物等效性。
Objective To determine the pharmacokinetics and relative bioavailability of gliclazide modified release tablets in Chinese healthy volunteers. Methods A single oral dose of 60 mg gliclazide modified release tablets of reference or test drugs was given to each volunteer according to an open randomized crossover study. The concentrations in the plasma were determined by reverse-phase pair HPLC. Pharmacokinetics and bioequivalence of the two formulations were also studied. Results The main pharmacokinetic parameters after a single oral doses of gliclazide modified release tablets were as follows: Cmax was (2. 92±1.29) μg · mL^- 1 and (2.73±1.39) μg · mL^- 1 respectively; tmax was (6. 9± 2. 1)h and (6.3±2.0) h respectively; t1/2 was (14.63±3.06) h and (15.89±3.46) h respectively; AUC0-60 was (53.82±17.58) μg · h · mL^- 1 and (57.11±22. 67) μg · h · mL^- 1 respectively. The steady state pharmacokinetic parameters after the multiple doses of gliclazide modified release tablets were as follows. Cmax was (3. 33 ± 1. 07) μg · mL^- 1and (3.11±1.22)μg · mL^- 1respectively; tmax was (54. 3±1.9) h and (54.5±2. 5) h, respectively; Cmax was (0. 20±0. 19) h and (0. 19±0.20) μg · mL^- 1respectively; Cmax was (1.1±10. 64) μg · mL^- 1 and (1.10±0.63) μg · mL^- 1 ; AUCss was (119.92±68.94)μg · h · mL^- 1 and (119.10+68.20)μg · h · mL^- 1, respectively. Conclusion This method is sensitive, accurate and simple. The two preparations are bioequivatent.
出处
《中南药学》
CAS
2007年第3期236-238,共3页
Central South Pharmacy