Mineralocorticoid receptors in vascular function and disease

被引:132
作者
McCurley, Amy [1 ]
Jaffe, Iris Z. [1 ,2 ]
机构
[1] Tufts Med Ctr, Mol Cardiol Res Inst, Boston, MA 02111 USA
[2] Tufts Med Ctr, Dept Med, Div Cardiol, Boston, MA 02111 USA
关键词
Mineralocorticoid receptor; Aldosterone; Endothelial function; Vascular smooth muscle cells; Atherosclerosis; Oxidative stress; INTIMA-MEDIA THICKNESS; SMOOTH-MUSCLE-CELLS; SELECTIVE ALDOSTERONE BLOCKER; ANGIOTENSIN-CONVERTING ENZYME; ACTIVATED PROTEIN-KINASE; OXIDATIVE STRESS; NITRIC-OXIDE; 11-BETA-HYDROXYSTEROID DEHYDROGENASE; ENDOTHELIAL-CELLS; NADPH OXIDASE;
D O I
10.1016/j.mce.2011.06.014
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
The mineralocorticoid receptor (MR), a member of the steroid receptor family, regulates blood pressure by mediating the effects of the hormone aldosterone (Aldo) on renal sodium handling. Over the past decade, it has become clear that MR is expressed in the cardiovascular system and interest has grown in understanding the direct role of the MR in regulating vascular function and contributing to cardiovascular disease. This interest stems from multiple clinical studies in which drugs that decrease MR activation also reduce the incidence of heart attacks, strokes, and mortality out of proportion to modest changes in systemic blood pressure. The presence of functional mineralocorticoid receptors in vascular smooth muscle and endothelial cells is now well established and, while still controversial, data supports the vasculature as an Aldo-responsive tissue. This review summarizes recent advances in our understanding of the role of vascular MR in regulating normal vascular function and in promoting vascular disease. In vitro data, in vivo animal studies, and human data are reviewed suggesting a role for MR-activation in promoting vascular oxidative stress, inhibiting vascular relaxation, and contributing to vessel inflammation, fibrosis, and remodeling. These detrimental vascular effects of MR activation appear to be independent of changes in blood pressure and are synergistic with the presence of endothelial dysfunction or damage. Thus, in humans with underlying cardiovascular disease or cardiovascular risk factors, vascular MR activation may promote vascular aging and atherosclerosis thereby contributing to the pathophysiology of heart attack, stroke, and possibly even hypertension. Further exploration of the molecular mechanisms for the detrimental vascular effects of MR activation has the potential to identify novel therapeutic targets to prevent or treat common cardiovascular disorders. (C) 2011 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:256 / 265
页数:10
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