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Abstract Title:

Comparison of cardioprotective effects using salvianolic acid B and benazepril for the treatment of chronic myocardial infarction in rats.

Abstract Source:

Naunyn Schmiedebergs Arch Pharmacol. 2008 Sep;378(3):311-22. Epub 2008 May 24. PMID: 18500511

Abstract Author(s):

Haibo He, Mengqiong Shi, Xianzhe Yang, Xiaowei Zeng, Limao Wu, Lianda Li

Article Affiliation:

Institute of Chinese Herbal Medicine, College of Pharmaceutical Sciences, Zhejiang University, Zijingang Campus, Hangzhou, People's Republic of China.

Abstract:

The aim of this study was to compare the cardioprotective effects of salvianolic acid B (Sal B) and the angiotension-converting enzyme inhibitor, benazepril, in rats with chronic myocardial infarction (MI) that resulted from a coronary artery ligation for 4 weeks. The rats were divided into four groups: those undergoing a sham operation; a MI group; a MI+SalB group (100 mg/kg by a gavage, once a day for 4 weeks); a MI+benazepril group (10 mg/kg by a gavage, once a day for 4 weeks). The following parameters were measured: echocardiographic, hemodynamic and hemorheological changes, angiogenesis, infarct size and cardiac remodeling and the messenger ribonucleic acid (mRNA) of vascular endothelium growth factor (VEGF). Rats treated with SalB or benazepril manifested the following: (1) marked improvements in echocardiographic, hemodynamic and hemorheological parameters; (2) significant reduction of infarct size; (3) significantly attenuated heart, kidney and lung hypertrophies, left ventricular (LV) dilatation and fibrosis. The unique effects of SalB were angiogenesis and augmented VEGF expression in the border and remote noninfarcted left ventricular area. These results suggest that both SalB and benazepril exerted beneficial cardioprotective effects in our experimental system, but that the modality of Sal B was different from that of benazepril. The additional beneficial effects of Sal B relative to benazpril, augmenting VEGF expression and promoting angiogenesis, may result in improved myocardial microcirculation.

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