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An integrated view of oxidative stress in aging: basic mechanisms, functional effects, and pathological considerations
Journal article   Open access   Peer reviewed

An integrated view of oxidative stress in aging: basic mechanisms, functional effects, and pathological considerations

Kevin C Kregel and Hannah J Zhang
American journal of physiology. Regulatory, integrative and comparative physiology, Vol.292(1), pp.R18-R36
01/2007
DOI: 10.1152/ajpregu.00327.2006
PMID: 16917020
url
https://doi.org/10.1152/ajpregu.00327.2006View
Published (Version of record) Open Access

Abstract

Aging is an inherently complex process that is manifested within an organism at genetic, molecular, cellular, organ, and system levels. Although the fundamental mechanisms are still poorly understood, a growing body of evidence points toward reactive oxygen species (ROS) as one of the primary determinants of aging. The "oxidative stress theory" holds that a progressive and irreversible accumulation of oxidative damage caused by ROS impacts on critical aspects of the aging process and contributes to impaired physiological function, increased incidence of disease, and a reduction in life span. While compelling correlative data have been generated to support the oxidative stress theory, a direct cause-and-effect relationship between the accumulation of oxidatively mediated damage and aging has not been strongly established. The goal of this minireview is to broadly describe mechanisms of in vivo ROS generation, examine the potential impact of ROS and oxidative damage on cellular function, and evaluate how these responses change with aging in physiologically relevant situations. In addition, the mounting genetic evidence that links oxidative stress to aging is discussed, as well as the potential challenges and benefits associated with the development of anti-aging interventions and therapies.
Animals Reactive Oxygen Species - metabolism Aging - physiology Cell Death - physiology Antioxidants - metabolism Humans Oxidative Stress - physiology Aging - pathology

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