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Abstract Title:

Effects of puerarin on lipopolysaccharide-induced myocardial dysfunction in isolated rat hearts.

Abstract Source:

Pak J Pharm Sci. 2017 Jul ;30(4):1195-1202. PMID: 29039314

Abstract Author(s):

Zhang Shaojun, Xu Yanyan, Chen Jian, Zheng Xia, Fang Qiang, Jiang Saiping

Article Affiliation:

Zhang Shaojun

Abstract:

Myocardial dysfunction is a serious complication induced by sepsis. Puerarin is an oriental medicine that possesses therapeutic benefits for cardiovascular diseases. The aim of this study was to evaluate the anti-myocardial dysfunction effects of puerarin in isolated rat hearts induced by lipopolysaccharide- and compare the myocardial protective effects between the different concentrations of puerarin. Isolated hearts were attached to a Langendorff apparatus and perfused with lipopolysaccharide (LPS) and different concentrations of puerarin. The hemodynamic parameters of heart rate (HR), left ventricular end systolic pressure [LVESP], +dp/dt, and -dp/dtwere recorded. The biochemical indexes of lactic dehydrogenase (LDH), tumor necrosis factor alpha (TNF-α), and creatine kinase (CK) in the coronary effluent were measured at 40, 90, and 120 min of perfusion. TNF-α in myocardial tissues was measured after perfusion was completed. As a result, puerarin (0.24 μmmol/L-0.48 μmmol/L) significantly increased LVESP, +dp/dt, -dp/dt, and HR in isolated rat hearts that were declined by LPS during perfusion periods. Puerarin could protect against increased LDH, CK, and TNF-α in coronary effluent of isolated rat hearts by LPS during perfusion periods. Treatment of 0.48 μmmol/L puerarin significantly decreased the TNF-α in coronary effluent of isolated rat hearts compared with the treatment of 0.12 and 0.24 μmmol/L puerarin, but the TNF-α values were not reverted to baseline levels. However, the difference of TNF-α in myocardial tissue in the three puerarin-combined groups was statistically significant. This study confirms that puerarin can improve LPS-induced contractile dysfunction in isolated heart and inhibit LPS-stimulated myocardial TNF-α production.

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Sayer Ji
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