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China Journal of Chinese Materia Medica ; (24): 471-477, 2014.
Artigo em Chinês | WPRIM | ID: wpr-287563

RESUMO

<p><b>OBJECTIVE</b>To investigate the protective effects of oxymatrine on chronic heart failure induced by isoproterenol (ISO) and to observe its effects on ADMA metabolism pathway in ISO-induced chronic heart failure in rats.</p><p><b>METHOD</b>Male Sprague-Dawley rats were given oxymatrine (100,50 mg kg-1) orally for 14 days. Heart failure was induced in rats by subcutaneous injection of isoproterenol (5 mg kg-1 d-1 ) at the 8th day for 1 week. Serum parameters, haemodynamic parameters, Heart weight, and histopathological variables were analysed. Expression of protein levels were measured by Western blot.</p><p><b>RESULT</b>Oxymatrine (100,50 mg kg-1) significantly attenuated serum content of cTn I, improved left ventricle systolic and diastolic function and left ventricular remodeling, reduced the ISO-induced myocardial pathological changes compared with ISO group. In addition, oxymatrine (100,50 mg kg-1) significantly reduced serum level of ADMA (P <0. 01), normalize the reduced dimethylarginine dimethylaminohydrolase 2 (DDAH2) expression (P <0. 01) , but had no effect on the isoproterenol-induced upregulated protein arginine methyltransferases 1 expression.</p><p><b>CONCLUSION</b>Oxymatrine could ameliorate the experimental ventricular remodeling in ISO-induced chronic heart failure in rats and the mechanism involved in reducing serum content of ADMA and increased DDAH2 expression.</p>


Assuntos
Animais , Masculino , Ratos , Alcaloides , Farmacologia , Usos Terapêuticos , Amidoidrolases , Metabolismo , Arginina , Sangue , Metabolismo , Doença Crônica , Regulação Enzimológica da Expressão Gênica , Insuficiência Cardíaca , Tratamento Farmacológico , Metabolismo , Patologia , Hemodinâmica , Isoproterenol , Tamanho do Órgão , Quinolizinas , Farmacologia , Usos Terapêuticos , Ratos Sprague-Dawley , Troponina I , Metabolismo
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