丹参酸A通过调控血管内皮细胞谷胱甘肽过氧化物酶活性及丙二醛含量抑制内毒素诱导的凋亡(英文)

被引:8
作者
赵启韬 [1 ]
郭庆梅 [2 ]
王鹏 [2 ]
王倩 [1 ]
机构
[1] 山东中医药大学基础医学院
[2] 山东中医药大学药学院
关键词
丹参素; 血管内皮细胞; 内毒素; 谷胱甘肽过氧化物酶; 丙二醛;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
1008 ;
摘要
目的:探寻丹参素 (丹参酸 A, SAA)对脂多糖(LPS)处理的血管内皮细胞 (VEC) 的保护作用及可能机制。方法:以 LPS 处理培养的人脐静脉血管内皮细胞, 造成细胞凋亡, 培养液中同时加入系列浓度的 SAA; 倒置相差显微镜观察细胞形态变化; 吖啶橙染色+激光共聚焦显微镜观测凋亡小体; PI 染色+流式细胞仪测定细胞周期分布; MTT 法检测细胞存活率; 生化试剂盒检测细胞内谷胱甘肽脱氢酶(GSH-Px) 活性及丙二醛(MDA)水平。结果:SAA 可明显抑制细胞凋亡, 提高细胞存活率。且该作用具浓度依赖性。对于 LPS 导致的细胞周期异常、GSH-Px 活性下降、MDA 水平升高, SAA 均可明显逆转。结论:丹参酸 A 通过抗氧化作用抑制内毒素诱导的血管内皮细胞凋亡。
引用
收藏
页码:53 / 57
页数:5
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