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Oxidative stress and CCN1 protein in human skin connective tissue aging

Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan, USA

Topical Section: Oxidative Stress and Ageing

Reactive oxygen species (ROS) is an important pathogenic factor involved in human aging. Human skin is a primary target of oxidative stress from ROS generated from both extrinsic and intrinsic sources, like ultraviolet irradiation (UV) and endogenous oxidative metabolism. Oxidative stress causes the alterations of collagen-rich extracellular matrix (ECM), the hallmark of skin connective tissue aging. Age-related alteration of dermal collagenous ECM impairs skin structural integrity and creates a tissue microenvironment that promotes age-related skin diseases, such as poor wound healing and skin cancer. Here, we review recent advances in our understanding of oxidative stress and CCN1 protein (first member of CCN family proteins), a critical mediator of oxidative stress-induced skin connective tissue aging.
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