title: A major green tea component, (-)-epigallocatechin-3-gallate, ameliorates doxorubicin-mediated cardiotoxicity in cardiomyocytes of neonatal rats.
abstract: Cardiac injury is a major complication of the oxidative stress-generating anticancer drug doxorubicin (DOX). The green tea polyphenol (-)-epigallocatechin-3-gallate (EGCG) has been reported to play a cardioprotective role in diseases associated with oxidative stress. The objective of this study was to investigate whether EGCG can protect against DOX-induced toxicity in cardiomyocytes. The data showed that EGCG protected the cardiomyocytes from DOX-mediated cardiotoxicity, as evidenced by decreased lactate dehydrogenase (LDH) activity and increased cell viability in a dose-dependent manner. EGCG treatment also decreased malondialdehyde content and increased protein expression and activities of manganese superoxide dismutase (MnSOD), catalase, and glutathione peroxidase. Furthermore, treatment with EGCG decreased reactive oxygen species (ROS) production and apoptosis. This study suggests that EGCG could protect cardiomyocytes from DOX-induced oxidative stress by attenuating ROS production, apoptosis, and increasing activities and protein expression of endogenous antioxidant enzymes.
authors.affiliation: State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
authors.forename: Wenjuan
authors.initials: W
authors.lastname: Li
authors.forename: Shaoping
authors.initials: S
authors.lastname: Nie
authors.forename: Mingyong
authors.initials: M
authors.lastname: Xie
authors.forename: Yi
authors.initials: Y
authors.lastname: Chen
authors.forename: Chang
authors.initials: C
authors.lastname: Li
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D000970:Antineoplastic Agents / Q000009:adverse effects*; D002374:Catalase / Q000378:metabolism; D002392:Catechin / Q000031:analogs & derivatives* / Q000494:pharmacology; D004317:Doxorubicin / Q000009:adverse effects*; D005979:Glutathione Peroxidase / Q000378:metabolism; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism; D032383:Myocytes, Cardiac / Q000187:drug effects* / Q000201:enzymology / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley; D013482:Superoxide Dismutase / Q000378:metabolism; D013662:Tea / Q000737:chemistry*
chemical_list: D000970:Antineoplastic Agents; D013662:Tea; D008315:Malondialdehyde; D004317:Doxorubicin; D002392:Catechin; C045651:epigallocatechin gallate; D007770:L-Lactate Dehydrogenase; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase