醛固酮对人脐血管内皮细胞凋亡的作用  被引量:1

Mineralocorticoid receptor mediated apoptosis of human umbilical vein endothelial cells induced by aldosterone

在线阅读下载全文

作  者:龙惠东[1] 叶慧玲[1] 曾昭华[1] 

机构地区:[1]广州医学院第一附属医院心内科

出  处:《中国心血管杂志》2010年第5期380-383,共4页Chinese Journal of Cardiovascular Medicine

基  金:广东省科技计划项目(20098030801359);广东省自然科学基金(9151018201000020)

摘  要:目的 探讨醛固酮(ALD)对人脐静脉内皮细胞(HUVEC)凋亡的作用及其可能的机制.方法 HUVEC分成3大组:正常对照组、ALD处理组(10-7、10-6、10-5mol/LALD)及螺内酯(10-6mol/L)处理组,流式细胞术检测HUVEC凋亡,免疫印迹法检测HUVEC盐皮质激素受体(MR)蛋白水平的表达.结果 (1)与对照组比较,10-7~10-5 mol/L ALD处理后HUVEC凋亡增加.(2)10-7~10-5mol/L ALD诱导的HUVEC凋亡呈剂量依赖性.(3)10-6、10-5 mol/L AID组加入10-6 mol/L螺内酯处理后凋亡下降(P〈0.01),即ALD诱导的HUVEC凋亡被螺内酯部分抑制.(4)ALD上调MR蛋白表达,螺内酯可部分阻断此作用.结论 AID可能通过上调HUVEC的MR蛋白表达而诱导细胞凋亡.Objective To investigate the mechanism (HUVECs) induced by aldosterone ( ALD ) . Methods of apoptosis of human umbilical vein endothelial cells HUVECs were cultured in vitro and identified with immunofluorescence method. Flow cytometry assay (FCM) was applied to determine the apoptosis of HUVEC; mineralocorticoid receptor (MR) protein was detected with western blotting. Results (1) Compared with control group, the apoptosis rate induced by ALD was higher. (2) ALD induced the apoptosis of HUVECs in a dose dependent manner. (3) The above effect of ALD was decreased by spironolactone, a specific aldosterone receptor antagonist. (4) In addition , the expression of MR was up-regulated by ALD, which was partially antagonized by 10-6 mol/L spironolactone. Conclusion Aldosterone induces apoptosis of HUVECs probably by up-regulating the expression of MR.

关 键 词:内皮 血管 脐静脉 醛固酮 凋亡 盐皮质激素受体 

分 类 号:R96[医药卫生—药理学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象