alexa Beneficial effects of rosuvastatin on aortic adverse remodeling in nitric oxide-deficient rats.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Metabolic Syndrome

Author(s): NetoFerreira R, Novaes Rocha V, da Silva Torres T, MandarimdeLacerda CA, de Carvalho JJ

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Abstract This study aimed to evaluate the effect of rosuvastatin upon structural and ultrastructural aortic remodeling in a rat model of hypertension induced by NO synthase blockade. Wistar rats were divided into 4 groups: Control group (C); control treated with rosuvastatin 20mg/kg/day (CR); L-NAME group 40 mg/kg/day (LN) and L-NAME treated with rosuvastatin (LNR) (same doses). Body mass and blood pressure were measured weekly; the experiment lasted 5 weeks. L-NAME administration augmented blood pressure (BP) in the LN group in comparison to the C group (123.3 vs. 180.5 mm Hg at week 5). In LNR rats, rosuvastatin slightly attenuated BP rise, but it had no effect on the BP of CR group. Intima and media thickening of the thoracic aorta were observed in the LN group, and increased elastic fiber content as well. Rosuvastatin prevented all these alterations as seen in the LNR group. Ultrastructural changes due to L-NAME intake (intracellular vesicles and altered membrane morphology in endothelial cells, extracellular matrix deposition, and cytoplasmatic projections from smooth muscle cells toward the internal elastic lamina) were also prevented by rosuvastatin. All in all, rosuvastatin administration is capable of attenuating ultrastructural aortic wall remodeling in NO-deficient rats despite small changes in blood pressure. Copyright © 2010 Elsevier GmbH. All rights reserved. This article was published in Exp Toxicol Pathol and referenced in Journal of Metabolic Syndrome

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