Planta Med 2009; 75(12): 1286-1292
DOI: 10.1055/s-0029-1185669
Pharmacology
Original Paper
© Georg Thieme Verlag KG Stuttgart · New York

Cardioprotection and Matrix Metalloproteinase-9 Regulation of Salvianolic Acids on Myocardial Infarction in Rats

Baohong Jiang1 , Wanying Wu1 , Ming Li1 , Lingling Xu1 , Kejia Sun1 , Min Yang1 , Shuhong Guan1 , Xuan Liu1 , De-an Guo1
  • 1Shanghai Research Center for Modernization of Traditional Chinese Medicine, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, P. R. China
Further Information

Publication History

received Sept. 2, 2008 revised March 20, 2009

accepted March 24, 2009

Publication Date:
08 May 2009 (online)

Abstract

Acute myocardial infarction (AMI) remains the leading cause of mortality in the world. Early intervention using salvianolic acids (SA) can substantially improve clinical outcomes. However, in spite of the great achievements that have been made in elucidating the protective effects of SA on AMI, the effects of SA on the contractile performance of the left ventricle (LV) and the underlying mechanism are still not so clear. In the present study, AMI was introduced by ligation of the left anterior descending coronary artery near the main pulmonary artery. Administration of SA significantly decreased infarct size, improved LV function and appearance of the myocardium and decreased myocardial malondialdehyde levels compared with the AMI group. Furthermore, treatment with SA significantly downregulated the mRNA expression level and activity of matrix metalloproteinase-9 (MMP-9), but did not regulate the tissue inhibitor of metalloproteinase-1 (TIMP-1) expression level at the infarct area. Lisinopril (an angiotensin converting enzyme inhibitor), which holds potential effects on cardioprotection, was chosen as the positive control in this study. Lisinopril elevated LV function and appearance of the myocardium, decreased malondialdehyde levels without an influence on infarct size, and regulated the MMP-9 enzyme level but not the MMP-9 mRNA and TIMP-1 protein levels. These findings suggest that early SA treatment is effective to improve LV function; and SA may exert preventative effects against myocardial remodeling after infarction.

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Prof. De-an Guo

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People's Republic of China

Phone: + 86 21 50 80 55 22

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Email: gda@bjmu.edu.cn