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Article Publish Status: FREE
Abstract Title:

Inhibition of Cardiomyocytes Hypertrophy by Resveratrol Is Associated with Amelioration of Endoplasmic Reticulum Stress.

Abstract Source:

Cell Physiol Biochem. 2016 ;39(2):780-9. Epub 2016 Jul 29. PMID: 27467279

Abstract Author(s):

Yan Lin, Jingbin Zhu, Xiaojie Zhang, Jun Wang, Wei Xiao, Bo Li, Li Jin, Jie Lian, Li Zhou, Jicheng Liu

Article Affiliation:

Yan Lin

Abstract:

BACKGROUND/AIMS: Resveratrol (Res), a polyphenol antioxidant found in red wine, has been shown to play a cardioprotective role. This study was undertaken to investigate whether Res can protect the heart suffering from hypertrophy injuries induced by isoproterenol (ISO), and whether the protective effect is mediated by endoplasmic reticulum (ER) stress.

METHODS: Cardiomyocytes were randomly assigned to the control group, ISO group (100 nM ISO for 48 h), Res + ISO group (50μM Res and 100 nM ISO for 48 h) and Res group (50 μM Res for 48h only). Hypertrophy was estimated by measuring the cell surface area and the atrial natriuretic peptide (ANP) gene expression. Apoptosis was measured using Hoechst 33258 staining and transmission electron microscopy. Protein expression of ER stress and apoptosis factors was analyzed using Western Blot analysis.

RESULTS: Res effectively suppress the cardiomyocytes hypertrophy and apoptosis induced by ISO, characterized by the reduction of the myocardial cell surface area, the ANP gene expression, the LDH and MDA leakage amount and the rate of cell apoptosis, while decrease of the protein expression of GRP78, GRP94 and CHOP, and reverse the expression of Bcl-2 and Bax.

CONCLUSION: In summary, Res treatment effectively suppressed myocardial hypertrophy and apoptosis at least partially via inhibiting ER stress.

Study Type : In Vitro Study

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Sayer Ji
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