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Abstract Title:

Mangiferin protect myocardial insults through modulation of MAPK/TGF-β pathways.

Abstract Source:

Eur J Pharmacol. 2016 Apr 5 ;776:34-43. Epub 2016 Feb 24. PMID: 26921754

Abstract Author(s):

Kapil Suchal, Salma Malik, Nanda Gamad, Rajiv Kumar Malhotra, Sameer N Goyal, Shreesh Ojha, Santosh Kumari, Jagriti Bhatia, Dharamvir Singh Arya

Article Affiliation:

Kapil Suchal

Abstract:

Mangiferin, a xanthone glycoside isolated from leaves of Mangifera indica (Anacardiaceae) is known to modulate many biological targets in inflammation and oxidative stress. The present study was designed to investigate whether mangiferin exerts protection against myocardial ischemia-reperfusion (IR) injury and possible role of Mitogen Activated Protein Kinase (MAPKs) and Transforming Growth Factor-β (TGF-β) pathways in its cardioprotection. Male albino Wistar rats were treated with mangiferin (40mg/kg, i.p.) for 15 days. At the end of the treatment protocol, rats were subjected to IR injury consisting of 45min ischemia followed by 1h reperfusion. IR-control rats caused significant cardiac dysfunction, increased serum cardiac injury markers, lipid peroxidation and a significant decrease in tissue antioxidants as compared to sham group. Histopathological examination of IR rats revealed myocardial necrosis, edema and infiltration of inflammatory cells. However, pretreatment with mangiferin significantly restored myocardial oxidant-antioxidant status, maintained membrane integrity, and attenuated the levels of proinflammatory cytokines, pro-apoptotic proteins and TGF-β. Furthermore, mangiferin significantly reduced the phosphorylation of p38, and JNK and enhanced phosphorylation ofERK1/2. These results suggest that mangiferin protects against myocardial IR injury by modulating MAPK mediated inflammation and apoptosis.

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