【摘要】 以细胞膜在毛细管内构成假固定相,建立一种基于毛细管电泳测定药物与细胞膜相互作用参数的方法.以西酞普兰和兔红细胞膜为相互作用模型,以不同浓度的细胞膜混悬液为电泳缓冲液,采用峰漂移法,并结合Scatchard分析,测得西酞普兰与兔红细胞膜的结合常数为0.977g-1.L.该方法简单、快速,为研究药物与细胞膜的相互作用提供了新的技术手段,为高通量筛选药物膜通透性和活性,以及评价药物在体内吸收提供一种新的方法.更多还原

【Abstract】 By introducing cell membrane into electrophoretic buffer as pseudo-stationary phase,a novel capillary electrophoresis method was established to explore the interaction between drugs and cell membrane,where the interaction between citalopram and rabbit red blood cell membrane was used as an example.A series of concentrations of cell membrane were suspended into the running buffer by peak-shift method.The binding constant of citalopram to rabbit red blood cell membrane of 0.977 g-1.L was obtained after treatment of Scatchard plot.This method could provide not only a new way for the investigation on the interactions between drugs and cell membrane,but also a new approach for high throughput screening of the drug membrane permeability,biological activity,and evaluating drugs in vivo.更多还原