Evidence for renoprotection by blockade of the renin-angiotensin-aldosterone system in hypertension and diabetes

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Abstract

The incidence of end- stage renal disease ( ESRD) is rising worldwide, accompanied by corresponding increases in the risk of morbidity and mortality. Underlying this trend are increasing rates of hypertension and diabetes mellitus, the two most common causes of ESRD. In addition to the adverse haemodynamic effects of hypertension on the kidney, elevated blood pressure ( BP) can activate components of the renin - angiotensin aldosterone system ( RAAS), which, in turn, activate mediators of inflammation, oxidative stress, cell growth, and matrix accumulation. Lowering BP reduces the risk of cardiovascular events and renal damage. Accumulating evidence from clinical and laboratory studies suggests that interrupting the RAAS with therapies such as angiotensin- converting enzyme angiotensin II receptor blockers, and aldosterone receptor blockers can interfere with the mechanisms that promote diabetic and non- diabetic renal damage. Moreover, clinical trials of RAAS blockade have demonstrated reductions in microalbuminuria, a predictor of increased cardiorenal risk and overt nephropathy in patients with and without diabetes and/ or hypertension. In this way, agents that block the RAAS should be considered the drugs of first choice as they provide enhanced renoprotection compared with other classes of antihypertensive agents such as calcium channel blockers and beta- blockers
Original languageEnglish
Pages (from-to)239 - 253
Number of pages15
JournalJournal of Human Hypertension
Volume20
Issue number4
DOIs
Publication statusPublished - Apr 2006

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