Abstract
The aim of this study is to investigate the cardioprotective effects of morroniside in rats following acute myocardial infarction. An acute myocardial infarction (AMI) was induced by ligating the anterior descending coronary artery (LAD) [1]. Following AMI, morroniside was administered intragastrically for 24h at doses of 45, 90, and 180mg/kg, respectively. Biomarkers such as creatine kinase (CK-MB), lactate dehydrogenase (LDH), ɑ-hydroxybutyrate dehydrogenase (ɑ-HBDH), and aspartate aminotransferase (AST) activities in AMI rats in the serum were detected with commercial kits [2]. Following AMI, morroniside was administered intragastrically for 72h at doses of 45, 90, and 180mg/kg/d, respectively. The expression of nuclear factor kappa B (NF-κB) in cardiac myocardium was detected by western blotting analysis. Meanwhile, cardiac function was measured by echocardiography. We observed morroniside decreased the levels of CK-MB, LDH, ɑ-HBDH, and AST activities in AMI rats after 24h. We also found that morroniside reduced the expression of NF-κB in cardiac myocardium at 72h post AMI rats. Further, cardiac function was improved by administration of morroniside. Collectively, our findings demonstrated that morroniside had cardioprotective effects in rats following acute myocardial infarction. Attenuation of inflammation might contribute to the cardioprotective effects of morroniside.
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