In vivo evidence for the pleiotropic effects of simvastatin on the nitric oxide synthase system is limited. Aims: To determine if simvastatin can affect the endothelial nitric oxide synthase cascade. Methods: New Zealand white rabbits (n=15) were divided: Group 1 (control) was fed a normal rabbit diet; Group 2 (MC) received a normal rabbit diet with 1% methionine (M) plus 0.5% cholesterol (C) and 5% peanut oil (atherogenic diet); Group 3 received the same diet as the MC group plus 5 mg/kg/ day simvastatin (S) orally (MCS). After 4 weeks, the abdominal aorta was collected and analyzed.

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