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高效毛细管电泳测定血管紧张素转化酶抑制剂captopril的活性 被引量:14

Determination of the inhibitory activity of angiotensin-converting enzyme inhibitor captopril by high performance capillary electrophoresis
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摘要 目的 建立高效毛细管电泳测定血管紧张素转化酶抑制剂captopril抑制活性的方法。方法 用紫外分光光度计确定了马尿酸的特征吸收波长为 2 2 8nm。高效毛细管电泳的条件 :熔融石英毛细柱 ,电泳缓冲液为pH 8 3的5 0mmol·L- 1 磷酸缓冲液 ,进样压力 4 8kPa,进样时间 3s,分离电压 2 0kV ,检测波长 2 2 8nm。结果 在 7min内使反应物和生成物完全分离 ,标定了captopril的IC50 值为 0 0 19μmol·L- 1 ,经过酶反应动力学判断captopril为竞争性抑制剂。结论 该方法准确、简便、快速 。 Aim To establish a method for determinate of the inhibitory activity of angiotensin-converting enzyme inhibitor captopril by high performance capillary electrophoresis. Methods The characterstic absorptive wavelength of hippuric acid determined by ultraviolet spectrophotometer is 228 nm. The method employed a melted capillary column, 50 mmol·L -1 phosphoric acid (pH 8.3) buffer solution, inject pressure 4.8 kPa, inject time 3 s, separation voltage 20 kV and detection wavelength 228 nm. Results ...
出处 《药学学报》 CAS CSCD 北大核心 2003年第11期843-845,共3页 Acta Pharmaceutica Sinica
基金 江苏省"青蓝工程"科研资助基金 (2 0 0 10 12 )
关键词 高效毛细管电泳 CAPTOPRIL 血管紧张素转化酶抑制剂 high performance capillary electrophoresis captopril angiotensin-converting enzyme inhibitor
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