洛美利嗪对大鼠脑微血管内皮细胞上P-糖蛋白活力的影响与P-gp及mdr1基因mRNA表达无关(英文)

被引:3
作者
吴玉林 [1 ]
马秉亮 [2 ]
祝浩杰 [3 ]
刘国卿 [3 ]
机构
[1] 中国药科大学药学院生理学教研室
[2] 上海中医药大学中药学院药理学教研室
[3] 中国药科大学药学院药理学教研室
关键词
P-糖蛋白; 洛美利嗪; 罗丹明123; 大鼠脑微;
D O I
暂无
中图分类号
R96 [药理学];
学科分类号
100602 ; 100706 ;
摘要
目的:研究洛美利嗪对原代培养的大鼠脑微血管内皮细胞(RBMECs)上P-糖蛋白(P-gp)功能和表达的影响。方法:使用流式细胞术分析洛美利嗪对P-gp底物-罗丹明123(rhodamine123,Rh123)在RBMECs中外排的影响,使用流式细胞术分析了洛美利嗪对RBMECs上P-gp表达的影响,应用RT-PCR技术分析了洛美利嗪对RBMECsmdr1基因mRNA水平表达的影响,还使用Transwell模型研究了洛美利嗪对Rh123通透RBMECs单层细胞转运的影响。结果:洛美利嗪通过抑制了RBMECs胞内Rh123的外排;洛美利嗪对P-gp功能的影响与RBMECs上P-gp及mdr1基因mRNA表达无关;在Transwell模型中,洛美利嗪还能显著增加Rh123跨RBMECs单层细胞膜的、经上室至下室的转运,并抑制相反方向的Rh123的转运。结论:洛美利嗪能显著地抑制RB-MECs上P-gp的活性,并对P-gp底物的跨细胞转运产生影响。
引用
收藏
页码:45 / 50
页数:6
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