cellular senescence

细胞衰老
  • 文章类型: Journal Article
    细胞衰老是响应应激而触发的细胞命运,其特征在于稳定的细胞周期停滞和过度分泌状态。它具有不同的生物学作用,从组织修复到慢性疾病。体内研究衰老的新工具的开发为揭示其生理和病理作用以及测试衰老细胞作为治疗靶标铺平了道路。然而,缺乏特异性和广泛适用的标记使得难以鉴定和表征组织和活生物体中的衰老细胞。为了解决这个问题,我们提供了称为“体内细胞衰老实验的最低信息”(MICSE)的实用指南。它介绍了啮齿动物组织中衰老标记的概述,转基因模型,非哺乳动物系统,人体组织,和肿瘤及其在鉴定和鉴定衰老细胞中的用途。这些指南提供了制服,最先进的,和可访问的工具集,以提高我们对体内细胞衰老的理解。
    Cellular senescence is a cell fate triggered in response to stress and is characterized by stable cell-cycle arrest and a hypersecretory state. It has diverse biological roles, ranging from tissue repair to chronic disease. The development of new tools to study senescence in vivo has paved the way for uncovering its physiological and pathological roles and testing senescent cells as a therapeutic target. However, the lack of specific and broadly applicable markers makes it difficult to identify and characterize senescent cells in tissues and living organisms. To address this, we provide practical guidelines called \"minimum information for cellular senescence experimentation in vivo\" (MICSE). It presents an overview of senescence markers in rodent tissues, transgenic models, non-mammalian systems, human tissues, and tumors and their use in the identification and specification of senescent cells. These guidelines provide a uniform, state-of-the-art, and accessible toolset to improve our understanding of cellular senescence in vivo.
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  • 文章类型: Journal Article
    高龄是影响心脏对心脏保护性干预的反应的冠状动脉综合征和合并症的发生率的主要诱发危险因素。高龄还显着增加了在缺血/再灌注(IR)损伤后发生缺血后不良重塑和心力衰竭的风险。一些信号通路在衰老过程中变得有缺陷或减弱,而其他具有众所周知的有害后果的人,如糖基化或促炎途径,加剧了。造成所有这些变化的原因机制尚未阐明,这是一个积极研究的问题。这里,我们回顾了目前关于心脏老化的病理生理学的知识,这些病理生理学最终影响细胞对IR损伤的易感性增加,并可能影响心脏保护策略的效率.
    Advanced age is a major predisposing risk factor for the incidence of coronary syndromes and comorbid conditions which impact the heart response to cardioprotective interventions. Advanced age also significantly increases the risk of developing post-ischaemic adverse remodelling and heart failure after ischaemia/reperfusion (IR) injury. Some of the signalling pathways become defective or attenuated during ageing, whereas others with well-known detrimental consequences, such as glycoxidation or proinflammatory pathways, are exacerbated. The causative mechanisms responsible for all these changes are yet to be elucidated and are a matter of active research. Here, we review the current knowledge about the pathophysiology of cardiac ageing that eventually impacts on the increased susceptibility of cells to IR injury and can affect the efficiency of cardioprotective strategies.
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  • 文章类型: Guideline
    There is good evidence that fertilization and pregnancy rates are similar to IVF/ICSI with fresh oocytes when vitrified/warmed oocytes are used as part of IVF/ICSI for young women. Although data are limited, no increase in chromosomal abnormalities, birth defects, and developmental deficits has been reported in the offspring born from cryopreserved oocytes when compared to pregnancies from conventional IVF/ICSI and the general population. Evidence indicates that oocyte vitrification and warming should no longer be considered experimental. This document replaces the document last published in 2008 titled, \"Ovarian Tissue and Oocyte Cryopreservation,\" Fertil Steril 2008;90:S241-6.
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  • 文章类型: Consensus Development Conference
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