RESUMO
Background A multitude of studies reported statins prevent the myocardial hypertrophy induced by pressure overload,but the mechanism is unclear.Objective To study the protective effect of atorvastatin on the myocardial hypertrophy caused by pressure overload and it's anti-inflammation effect.Methods Forty Wistar rats were randomized to untreated group(n=10),atorvastatin group(2 mg/kg?d,by gavage,n=10),sham op- eration group(n=10)and control group(n=10).Ventricular hypertrophy model was achieved by surgical con- stricting the abdominal aorta.All rats were sacrificed 8 weeks after the operation and the heart weight to body ratio,left ventricular weight to body ratio,and the size of cardiomyocyte were determined.The expressions of interleukin 18(IL-18)and cardiotrophin 1(CT-1)in the cadiocyte were assessed by reverse transcription polymer- ase chain reaction(RT-PCR).Results Compared with control group,SBP in myocardial hypertrophy group was significantly increased(174?9 vs control 112?15 mmHg,P