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高效液相色谱法测定头孢克洛在人体内的生物利用度

吕万良, 张强, 孙华东, 王新红   

  1. 北京医科大学药学院药剂教研室, 北京 100083
  • 收稿日期:1998-04-20 修回日期:1998-08-27 出版日期:1999-06-15 发布日期:1999-06-15

Determination of Relative Bioavailability of Cefaclor in Healthy Human Volunteers by High Performance Liquid Chromatography

Lu Wanliang, Zhang Qiang, Sun Huadong, Wang Xinhong   

  1. School of Pharmaceutical Sciences, Beijing Medical University, Beijing 100083
  • Received:1998-04-20 Revised:1998-08-27 Online:1999-06-15 Published:1999-06-15

摘要: 为评估头孢克洛在人体内的血药浓度及其生物利用度, 建立了一种简便的反相高效液相色谱方法, 以代替复杂的工作量较大的生物效价方法; 10名健康志愿受试者分别交叉口服了头孢克洛胶囊剂(Keflor)、市售希刻劳胶囊剂(对照品), 在一定的时间点抽取静脉血, 测定生物利用度. 结果表明:建立的高效液相色谱法平均回收率为98.0%, 日内差, 日间差为0.10%~4.0%; 测试品(Keflor)的主要药物动力学参数分别为:Tmax= 0.55h, Cmax = 5061 μg·ml-1, AUC0-∞ = 11.13 μg·h·ml-1, t1/2 = 0.90 h; 与对照品相比, Keflor的相对生物利用度为105.29%, 经双单侧t检验分析, 二者无统计意义差异.

关键词: 头孢克洛, 高效液相色谱, 胶囊, 生物利用度

Abstract: To evaluate the bioavailability of cefaclor, we established a reverse phase high performance liquid chromatographic method (HPLC). Ten healthy male volunteers were included in this randomized crossover study of bioavailability. Each was orally administered cefaclor capsule preparation (Keflor, 250 mg) or commercial one (Ceclor as a control, 250 mg), respectively. Venous blood samples were drawn at different times after dosing, and determined by HPLC. The results showed that the mean recovery of cefaclor from serum was 98.0%, and relative standard deviations of within-day and of between-day were observed from 0. 1% to 4.0%. The pharmacokinetic parameters of test preparation (Keflor), Tmax, Cmax, AUC0-∞, t1/2 were 0.55±0.11 h, 5.61±1.27 μg.ml-1, 11.13±1.64 μg.h.ml-1, 0.9 h, respectively. The relative bioavailability of Keflor was calculated to be 105.29±19.13%, as compared with control preparation (Ceclor). No statistically significant differences were observed in AUC0-∞, etc, by the two one-sided t-test procedures.

Key words: Cefaclor, HPLC, Capsule, Bioavailability

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