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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (8): 915-920.

• 研究原著 • 上一篇    下一篇

多剂量口服硝苯地平缓释片的药动学及生物等效性研究

薛洪源, 侯艳宁, 杨荣慧, 贾丽霞, 张运好   

  1. 白求恩国际和平医院临床药理室, 石家庄 050082 , 河北
  • 收稿日期:2006-04-03 接受日期:2006-06-06 出版日期:2006-08-26 发布日期:2020-11-05

XUE Hong-yuan , HOU Yan-ning , YANG Rong-hui , JIA Li-xia , ZHANG Yun-hao

XUE Hong-yuan, HOU Yan-ning, YANG Rong-hui, JIA Li-xia, ZHANG Yun-hao   

  1. Department of Pharmacology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
  • Received:2006-04-03 Accepted:2006-06-06 Online:2006-08-26 Published:2020-11-05
  • About author:XUE Hong-yuan , female , master degree , specialized in clinical pharmacology.Tel:0311-87978503  E-mail:xuer0401@sohu.com

摘要: 目的 研究多剂量口服硝苯地平缓释片在人体内的药动学特点和两种硝苯地平缓释片的生物等效性。方法 22 名健康男性志愿者采用双周期交叉、自身对照试验设计。以尼群地平为内标, 采用高效液相色谱-大气压化学源-质谱联用(HPLC-MS)的方法, 测定人血浆中硝苯地平的浓度。将22 名受试者的经时血药浓度录入DAS(ver 1.0)程序, 得到药代动力学参数, 并进行统计分析和生物等效性评价。结果 多剂量口服20 mg ×7 d 受试和参比制剂后血浆中硝苯地平的Cmax 分别为52.5 ±27.4 、54.0 ±31.2 ng·ml-1 , Cmin 分别为5.4 ±4.1 、6.2 ±5.9 ng·ml-1 , Cav 分别为16.8 ±9.2 、19.3 ±12.4 ng·ml-1 , Tmax 分别为3.7 ±0.9 、4.1 ±1.1 h , t1 2分别为8.9 ±4.9 、8.5 ±3.1 h , AUC0 -τ分别为403.4±221.0 、461.9 ±296.6 ng·h·ml-1 , AUC0-36h 分别为444.4 ±256.1 、503.1 ±330.9 ng·h·ml-1 , AUC0 -∞ 分别为482.1 ±268.9 、542.3 ±348.4 ng·h·ml-1 , DF分别为(299.8 ±117.7)%、(279.2 ±97.5)%。Tmax进行非参数秩和检验, Cmax 、Cmin 、Cav 、DF 、AUC0 -τ、AUC0-36h 、AUC0 -∞经对数转换后做方差分析, 并经双向单侧t 检验, 两制剂的Tmax 、Cmax 、Cmin 、Cav 、DF 、AUC0-τ、AUC0 -36h 、AUC0-∞ 均无显著性差异(P>0.05), 受试制剂的Cav 、DF 、AUC0 -36h 、AUC0 -τ、AUC0-∞ 的90%可信限落在参比制剂的80% ~125%范围内;Cmax 、Cmin的90%可信限落在参比制剂的70%~ 143%范围内。两种制剂的相对生物利用度为(100.6 ±38.6)%(AUC0-36h, T AUC0-36h, R ×100%)。结论 两种制剂具有生物等效性。

关键词: 硝苯地平, 药动学, 生物等效性, 生物利用度, 高效液相色谱-质谱法

Abstract: AIM: To investigate the pharmacokinetic properties and bioequivalence of nifedipine sustained-release tablets after multiple doses administration in healthy volunteers.METHODS: Twenty two male healthy volunteers were enrolled in a randomized two-way crossover design with multiple doses (20 mg·d-1 ×;7 d)study.Nitrendipine was used as the internal standard and the concentrations of nifedipine in plasma were determined by HPLC-APCI-MS.The pharmacokinetic parameters were calculated and the bioequivalence were compared by DAS(ver 1.0)program.RESULTS: The pharmacokinetic parameters of test and reference preparations were as follows:Cmax(52.5 ±;27.4)and (54.0 ±;31.2)ng·ml-1;Cmin(5.4 ±;4.1)and (6.2 ±;5.9)ng·ml-1;Cav(16.8±;9.2)and (19.3 ±;12.4)ng·ml-1;Tmax(3.7 ±;0.9)and (4.1 ±;1.1)h;t1 2(8.9 ±;4.9)and (8.5 ±;3.1)h;AUC0 -τ(403.4 ±;221.0)and (461.9 ±;296.6)μg·h·L-1 , AUC0-36h (444.4 ±;256.1)and (503.1 ±;330.9) ng·h·ml-1;AUC0 -∞ (482.1 ±;268.9) and(542.3 ±;348.4)ng·h·ml-1;DF (299.8 ±;117.7)%and (279.2 ±;97.5)%, respectively.There were no significantdifferences (P>;0.05)in Tmax , Cmax , Cmin ,Cav , DF , AUC0 -τ , AUC0 -36h , AUC0 -∞ and t1 2 between the two preparations.The relative bioavailability of test tablets was (100.6 ±;38.6)%.CONCLUSION: The test and reference preparations were bioequivalence.

Key words: nifedipine, pharmacokinetics, bioequivalence, bioavailability, HPLC-APCI-MS

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