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Regulation of human skin pigmentation and responses to ultraviolet radiation

机译:调节人的皮肤色素沉着和对紫外线的响应

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Pigmentation of human skin is closely involved in protection against environmental stresses, in particular exposure to ultraviolet (UV) radiation. It is well known that darker skin is significantly more resistant to the damaging effects of UV, such as photocarcinogenesis and photoaging, than is lighter skin. Constitutive skin pigmentation depends on the amount of melanin and its distribution in that tissue. Melanin is significantly photoprotective and epidermal cells in darker skin incur less DNA damage than do those in lighter skin. This review summarizes current understanding of the regulation of constitutive human skin pigmentation and responses to UV radiation, with emphasis on physiological factors that influence those processes. Further research is needed to characterize the role of skin pigmentation to reduce photocarcinogenesis and to develop effective strategies to minimize such risks.
机译:人体皮肤的色素沉着与防止环境压力,特别是暴露于紫外线(UV)密切相关。众所周知,与较亮的皮肤相比,较黑的皮肤对紫外线的破坏作用(如光致癌作用和光老化)的抵抗力要强得多。组成性皮肤色素沉着取决于黑色素的数量及其在该组织中的分布。黑色素具有明显的光保护作用,深色皮肤中的表皮细胞比浅色皮肤中的表皮细胞受到的DNA损伤更少。这篇综述总结了当前对人体组成性色素沉着的调节和对紫外线辐射的反应的理解,重点是影响这些过程的生理因素。需要进一步的研究来表征皮肤色素沉着在减少光致癌作用中的作用,并制定出有效的策略来最大程度地减少此类风险。

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