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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (2): 180-182.

• 研究原著 • 上一篇    下一篇

反相高效液相色谱法测定硝苯地平的血药浓度

周茂金, 焦建杰, 董伟林, 孟林, 郑尧, 高卫真, 刘艳霞, 张才丽, 娄建石   

  1. 天津医科大学药理教研室, 天津 300083
  • 收稿日期:2002-11-06 修回日期:2002-11-22 出版日期:2003-04-26 发布日期:2020-11-25
  • 通讯作者: 焦建杰, 男, 副教授, 从事临床药理学研究工作。
  • 作者简介:周茂金, 男, 在读博士, 现在泰安市中心医院, 从事药物代谢及药代动力学研究。Tel:022-23006863(Fax) E-mail:Zhoumaojin@eyou.com

Determination of nifedipine in plasma by reversed phase high-performance liquid chromatography

ZHOU Mao-Jin, JIAO Jian-Jie, DONG Wei-Lin, MENG-Lin, GAO Wei-Zhen, ZHENG-Yao, LIU Yan-Xia, ZHANG Cai-Li, LOU Jian-Shi   

  1. Department of Pharmacology, Tianjin Medical University, Tianjin 300080
  • Received:2002-11-06 Revised:2002-11-22 Online:2003-04-26 Published:2020-11-25

摘要: 目的: 建立血浆中硝苯地平的高效液相色谱测定方法。方法: 取血浆1.0 ml, 以尼群地平为内标, 用乙酸乙酯及环己烷(3 ∶1)提取两次, 有机相在55 ℃水浴中氮气吹干, 残渣用流动相复溶后进样分析。结果: 本法在5 ~ 200 μg·L-1范围内线性良好,相关系数r=0.9999 (n=6)。高、中、低三种浓度硝苯地平的回收率为90.13%~ 99.43%, 日内精密度为1.43% ~ 6.61%, 日间精密度为3.85% ~8.79%, 硝苯地平和内标的平均绝对回收率分别为90.58%和91.59%。内源性物质对测定无干扰。结论: 本法灵敏度及特异性高, 操作简便, 适用于硝苯地平的临床药代动力学研究。

关键词: 药理学, 硝苯地平, 血药浓度, 高效液相色谱法

Abstract: AIM: To develop a HPLC method for the determination of nifedipine in plasma. METHODS: Nitrendipine was used as the internal standard and 1.0 ml lasma was extracted by n-hexane-ethylacetate (3 ∶1)in a two-step extraction.The organic layer was transferred to another tube and evaporated to dryness under a stream of nitrogen gas at 55 ℃.The residue was reconstituted with the mobile phase. RESULTS: the linearity was obtained from 5 to 200 μg·L-1 of nifedipine in plasma with a good correlation (r=0.9999, n=6).The recoveries of nifedipine were 90.13% to 99.43%, and the coefficients of variation of within-day and between-days were 1.43% to 6.61% and 3.85% to 8.79%, and the average absolute recoveries of nifedipine and internal standard were 90.58% and 91.59% for the low, middle and high concentration of check samples, respectively.Endogenous substance did not interfere in the analysis. CONCLUSION:~This method is sensitive, specific and simple and suited for the nifedipine pharmacokinetic study.

Key words: pharmacology, nifedipine, plasma concentration, HPLC

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