远紫外线和UVB诱导的DNA损伤取决于皮肤类型
Loris Busch1,2, Marius Kröger1, Daniela F Zamudio Díaz1,3
1Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.
Experimental dermatology
|August 7, 2023
概括
在233nm的远紫外线辐射显示,在较暗的皮肤中,DNA损伤较小,而在222nm没有皮肤类型差异. 黑色素水平与这些光保护作用相关,表明安全的消毒剂应用.
科学领域:
- 照相医疗 (photomedicine) 是一种医学技术.
- 皮肤病学 皮肤病学
- 分子生物学分子生物学
背景情况:
- 远紫外线辐射 (222-233纳米) 具有潜在的皮肤消毒疗法由于高兼容性.
- 关于远紫外线对不同皮肤类型的DNA损伤的影响的研究有限.
研究的目的:
- 为了研究各种皮肤类型的远紫外线诱导的DNA损伤.
- 为了比较来自222nm,233nm和宽带UVB辐射的DNA损伤.
- 探索黑色素在差异光保护中的作用.
主要方法:
- 用222nm,233nm远紫外线和宽带UVB照射皮肤.
- 免疫组织化学检测循环丁胺二聚阳性 (CPD+) 细胞.
- 两光子激发光终身成像 (TPE-FLIM) 用于量化黑色素分布.
主要成果:
- 233nm远紫外线诱导的外皮DNA损伤较少,在较暗的皮肤类型与光皮肤相比.
- 222nm远紫外线显示没有显著的皮肤类型依赖的DNA损伤差异.
- 紫外线B在DNA损伤中表现出最明显的皮肤类型差异.
- 在基层/粒层 (高达皮肤类型IV-V) 中观察到较高的黑色素比率.
结论:
- 远紫外线的有限透和黑色素的光保护作用解释了与UVB相比减少的皮肤类型差异.
- 222nm和233nm远紫外线显示出对抗菌性皮肤治疗的前景,在皮肤类型之间具有最小的差异效应.
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