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Activation of senescence and aging characteristics by mitochondrially generated ROS: how are they linked?

机译:线粒体产生的ROS激活衰老和衰老特征:它们如何联系?

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The elevated and sustained expression of stress-response signaling pathways (p38 MAPK, SAPK/JNK) is a major physiological characteristic of aged tissues.1"3 This age-associated state of chronic stress is attributed to mitochondrial electron transport chain (mETC) dysfunction and is a key factor that promotes stress-induced-aging characteristics (SIAC), declining tissue function and age-associated diseases. Endogenous reactive oxygen species (ROS) are important factors whose modulation regulates the signaling pathway activities that control the development of aging and longevity phenotypes. Mitochondria have been identified as a major source of age-associated ROS, thus emphasizing the importance of understanding the mechanism that links mitochondrial dysfunction to ROS-sensitive signaling that promotes the characteristics of senescence, aging or longevity.
机译:应激反应信号通路(p38 MAPK,SAPK / JNK)的升高和持续表达是衰老组织的主要生理特征。1“ 3这种与年龄相关的慢性应激状态归因于线粒体电子运输链(mETC)功能障碍。内源性活性氧(ROS)是重要的因子,其调节调节信号通路的活性,从而控制衰老和衰老的发展,是促进应激诱导衰老特征(SIAC),组织功能下降和与年龄有关的疾病的关键因素。线粒体已被鉴定为与年龄相关的ROS的主要来源,因此强调了了解将线粒体功能障碍与ROS敏感信号相关联的机制的重要性,该机制促进衰老,衰老或长寿。

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