Pleiotropic effects of statins may improve outcomes in atherosclerotic renovascular disease

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Silva, Vanessa S. [UNESP]
Martin, Luis Cuadrado [UNESP]
Franco, Roberto Jorge da Silva [UNESP]
Carvalho, Fabio C. [UNESP]
Bregagnollo, Edson Antônio [UNESP]
Castro, Joao H. [UNESP]
Gavras, Irene
Gavras, Haralambos

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Nature Publishing Group


BACKGROUNDAtherosclerotic renovascular disease (ARD) coexists with arterial obstructive disease in the coronary, cerebral, and peripheral arteries that may remain underdiagnosed and untreated.METHODSThis retrospective study compares overall survival and renal survival (i.e., time to doubling of serum creatinine or end-stage renal disease (ESRD)) over an 11-year period in 104 ARD patients of whom 68 received statin therapy (group S) because of elevated lipid levels and 36 had no statin (group NS) because of normal lipid profile at entry.RESULTSAtherosclerosis in another vascular bed was documented in 84%. Lipid profiles at end point were virtually identical in both the groups Group S had mean survival 123 months (confidence interval (CI) 113-134) with four deaths, and mean renal survival 122 months (CI 113-131). Group NS had mean survival 33 months (CI 23-42) with 13 deaths, and mean renal survival 27 months (CI 17-37).CONCLUSIONSStatin therapy was associated with lesser rate of progression of renal insufficiency (with 7.4% of S patients reaching renal end points vs. 38.9% of NS patients) and lower overall mortality (5.9% in S vs. 36.1% in NS patients), P < 0.001 for both. Although both groups received what was deemed optimal therapy, they did have other differences that may have affected the outcomes (a limitation addressed by Cox multiple regression analysis). These results suggest the need for prospective randomized controlled studies in ARD patients in order to explore potential benefits of statins that may not be attributable solely to lipid lowering.



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American Journal of Hypertension. New York: Nature Publishing Group, v. 21, n. 10, p. 1163-1168, 2008.