Apocynin attenuates isoproterenol-induced myocardial injury and fibrogenesis |
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Authors: | Li Liu Jingang Cui Qinbo Yang Chenglin Jia Minqi Xiong Bingbing Ning Xiaoye Du Peiwei Wang Xintong Yu Li Li Wenjian Wang Yu Chen Teng Zhang |
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Institution: | 1. Clinical Research Institute of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China;2. Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China |
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Abstract: | Oxidative stress is mechanistically implicated in the pathogenesis of myocardial injury and the subsequent fibrogenic tissue remodeling. Therapies targeting oxidative stress in the process of myocardial fibrogenesis are still lacking and thus remain as an active research area in myocardial injury management. The current study evaluated the effects of a NADPH oxidase inhibitor, apocynin, on the production of reactive oxygen species and the development of myocardial fibrogenesis in isoproterenol (ISO)-induced myocardial injury mouse model. The results revealed a remarkable effect of apocynin on attenuating the development of myocardial necrotic lesions, inflammation and fibrogenesis. Additionally, the protective effects of apocynin against myocardial injuries were associated with suppressed expression of an array of genes implicated in inflammatory and fibrogenic responses. Our study thus provided for the first time the histopathological and molecular evidence supporting the therapeutic value of apocynin against the development of myocardial injuries, in particular, myocardial fibrogenesis, which will benefit the mechanism-based drug development targeting oxidative stress in preventing and/or treating related myocardial disorders. |
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Keywords: | Myocardial injury Fibrosis Reactive oxygen species Apocynin Gene expression |
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