Current Hypertension Reports

, Volume 1, Issue 2, pp 187-194

First online:

New insights into the renin-angiotensin system and hypertensive renal disease

  • Agnes B. FogoAffiliated withMCN C3310, Department of Pathology, Vanderbilt University Medical Center

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The role of the renin-angiotensin system in hypertension and end organ damage has long been recognized. Recent advances in genetic models and newly available pharmacologic tools have allowed dissection of the mechanisms of actions of the renin-angiotensin system in hypertensive kidney disease. The newly cloned AT2 receptor is now recognized to oppose many of the AT1 receptor’s actions. The renin-angiotensin system is now recognized to be linked to induction of plasminogen activator inhibitor-1 (PAI-1), possibly via the AT4 receptor, thus promoting both thrombosis and fibrosis. Interactions of the reninangiotensin system with aldosterone and bradykinin may have impact on both blood pressure and tissue injury. The effects of angiotensin 1 converting enzyme inhibitors versus those of the newly available AT1 receptor antagonists on blood pressure and organ damage are undergoing evaluation in clinical trials. Finally, polymorphisms of genes relevant to the renin-angiotensin system appear to affect response to treatment, although this effect varies in different populations.