Abstract
The renoprotective effects of pharmacologic inhibition of angiotensin II extend beyond the blood pressure-lowering effects alone, consistent with the observation that angiotensin II is produced locally within the kidney and mediates tissue injury through a series of nonhemodynamic effects. Podocytes are terminally differentiated epithelial cells that contribute to the filtration barrier of the kidney, but also safeguard against the development of glomerulosclerosis. Mounting evidence demonstrates that podocytes are not only a local source of angiotensin II production, but are also vulnerable to its deleterious effects, thus fueling the future development of glomerular scarring. In this review article, we explore the role of a local angiotensin system as a mediator of podocyte injury and discuss its potential link to hypertensive renal disease.
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