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Post-exposure persistence of nitric oxide upregulation in skin cells irradiated by UV-A
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Post-exposure persistence of nitric oxide upregulation in skin cells irradiated by UV-A
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Post-exposure persistence of nitric oxide upregulation in skin cells irradiated by UV-A
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Journal Article
Post-exposure persistence of nitric oxide upregulation in skin cells irradiated by UV-A
2022
Overview
Evidence suggests that exposure to UV-A radiation can liberate nitric oxide from skin cells eliciting vasodilation in-vivo. However, the duration of nitric oxide release in skin cells after UV exposure is not well studied, with emphasis on UV-B mediated iNOS upregulation. The current study demonstrated persistence of nitric oxide release in a dark reaction after moderate UV-A exposure, peaking around 48 h post exposure; this effect was shown in keratinocytes, fibroblasts and endothelial cells from neonatal donors and keratinocytes from aged donors and confirmed the hypothesis that UV-A exposure appeared to upregulate cNOS alongside iNOS. Release of nitric oxide in the skin cells induced by a moderate exposure to UV-A in sunlight may be especially beneficial for some demographic groups such as the elderly, hypertensive patients or those with impaired nitric oxide function, not only during exposure but many hours and days after that.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
