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Lycopene protects against pressure overload-induced cardiac hypertrophy by attenuating oxidative stress

机译:通过衰减氧化应激,番茄红素可防止压力过载诱导的心脏肥厚

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摘要

Oxidative stress is considered an important pathogenic process of cardiac hypertrophy. Lycopene is a kind of carotenoid antioxidant that protects the cardiovascular system, so we hypothesized that lycopene might inhibit cardiac hypertrophy by attenuating oxidative stress. Phenylephrine and pressure overload were used to set up the hypertrophic models in vitro and in vivo respectively. Our data revealed that treatment with lycopene can significantly block pressure overload-induced cardiac hypertrophy in in vitro and in vivo studies. Further studies demonstrated that lycopene can reverse the increase in reactive oxygen species (ROS) generation during the process of hypertrophy and can retard the activation of ROS-dependent pro-hypertrophic MAPK and Akt signaling pathways. In addition, protective effects of lycopene on the permeability transition pore opening in neonatal cardiomyocytes were observed. Moreover, we demonstrated that lycopene restored impaired antioxidant response element (ARE) activity and activated ARE-driven expression of antioxidant genes. Consequently, our findings indicated that lycopene inhibited cardiac hypertrophy by suppressing ROS-dependent mechanisms. (C) 2019 Elsevier Inc. All rights reserved.
机译:氧化应激被认为是心肌肥厚的重要致病过程。番茄红素是一种类胡萝卜素抗氧化剂,可以保护心血管系统,因此我们假设通过衰减氧化应激,番茄红素可能会抑制心肌肥厚。使用去邻苯胺和压力过载用于分别在体外和体内设置肥大模型。我们的数据显示,番茄红素的处理可以显着阻止体外和体内研究中的压力过载诱导的心脏肥厚。进一步的研究表明,番茄红素可以在肥大过程中逆转活性氧物质(ROS)产生的增加,并且可以阻止ROS依赖性促肥大MAPK和AKT信号传导途径的激活。此外,观察了番茄红素对新生儿心肌细胞渗透性过渡孔隙开口的保护作用。此外,我们证明番茄红素恢复受损的抗氧化剂反应元件(是)活性和活化的抗氧化基因的表达。因此,我们的研究结果表明番茄红素通过抑制依赖性机制来抑制心脏肥大。 (c)2019 Elsevier Inc.保留所有权利。

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  • 作者单位

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ NHC Key Lab Assisted Circulat Guangzhou Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

    Sun Yat Sen Univ Affiliated Hosp 1 Dept Cardiol 58 Zhongshan Rd 2 Guangzhou 510080 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物化学;
  • 关键词

    Lycopene; Cardiac hypertrophy; Pressure overload; Phenylephrine; Oxidative stress;

    机译:番茄红素;心脏肥大;压力过载;去苯杂环;氧化应激;

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