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• W2086562481 endingPage "e42586" @default.
• W2086562481 startingPage "e42586" @default.
• W2086562481 abstract "Thymosin beta-4 (Tβ4) is a ubiquitous protein with many properties relating to cell proliferation and differentiation that promotes wound healing and modulates inflammatory mediators. The mechanism by which Tβ4 modulates cardiac protection under oxidative stress is not known. The purpose of this study is to dissect the cardioprotective mechanism of Tβ4 on H(2)O(2) induced cardiac damage.Rat neonatal cardiomyocytes with or without Tβ4 pretreatment were exposed to H(2)O(2) and expression of antioxidant, apoptotic, and anti-inflammatory genes was evaluated by quantitative real-time PCR and western blotting. ROS levels were estimated by DCF-DA using fluorescent microscopy and fluorimetry. Selected antioxidant, anti-inflammatory and antiapoptotic genes were silenced by siRNA transfections in neonatal cardiomyocytes and effect of Tβ4 on H(2)O(2)-induced cardiac damage was evaluated.Pre-treatment of Tβ4 resulted in reduction of the intracellular ROS levels induced by H(2)O(2) in cardiomyocytes. Tβ4 pretreatment also resulted in an increase in the expression of antiapoptotic proteins and reduction of Bax/BCl(2) ratio in the cardiomyocytes. Pretreatment with Tβ4 resulted in stimulating the expression of antioxidant enzymes copper/zinc SOD and catalase in cardiomyocytes at both transcription and translation levels. Tβ4 treatment resulted in the increased expression of anti-apoptotic and anti-inflammatory genes. Silencing of Cu/Zn SOD and catalase gene resulted in apoptotic cell death in the cardiomyocytes which was prevented by treatment with Tβ4.This is the first report that demonstrates the effect of Tβ4 on cardiomyocytes and its capability to selectively upregulate anti-oxidative enzymes, anti-inflammatory genes, and antiapoptotic enzymes in the neonatal cardiomyocytes thus preventing cell death thereby protecting the myocardium. Tβ4 treatment resulted in decreased oxidative stress and inflammation in the myocardium under oxidative stress." @default.
• W2086562481 created "2016-06-24" @default.
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• W2086562481 date "2012-08-03" @default.
• W2086562481 modified "2023-10-12" @default.
• W2086562481 title "Thymosin Beta 4 Protects Cardiomyocytes from Oxidative Stress by Targeting Anti-Oxidative Enzymes and Anti-Apoptotic Genes" @default.
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• W2086562481 doi "https://doi.org/10.1371/journal.pone.0042586" @default.
• W2086562481 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3411836" @default.
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