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第45卷第12期                           南京医科大学学报(自然科学版)
                 2025年12月                   Journal of Nanjing Medical University(Natural Sciences)     ·1747 ·


               ·基础研究·

                NB⁃UVB通过促进维生素D代谢缓解银屑病样皮炎的作用及机

                制研究



                胡   枫,周 煜,李辛瑜,屈子璐           *

                武汉市第一医院皮肤科,湖北 武汉             430022



               [摘   要] 目的:探讨窄谱中波紫外线(narrow⁃band ultraviolet B,NB⁃UVB)通过促进维生素D(vitamin D,VD)代谢缓解咪喹莫
                特(imiquimod,IMQ)诱导银屑病样小鼠皮炎的效应机制。方法:C57BL/6 小鼠背部去毛外涂IMQ乳膏进行银屑病样皮炎的造
                模,检测小鼠血清中VD代谢产物25(OH)D3和1,25(OH) 2D3的含量,以及皮损中VD受体(vitamin D receptor,VDR)mRNA表达;确
                定NB⁃UVB照射小鼠的辐照能量后,进行造模联合NB⁃UVB照射,观察小鼠皮损,检测血清中25(OH)D3和 1,25(OH) 2D3的含量、

                皮损中VDR和炎症因子[(白细胞介素(interleukin,IL)⁃17A、IL⁃23、肿瘤坏死因子(tumor necrosis factor,TNF)⁃α、IL⁃1β]的mRNA
                表达及蛋白含量及CD3 CD4 IL⁃17A T细胞比例。使用特异性抑制剂Dafadine⁃A阻断小鼠VD代谢关键酶细胞色素P450家族
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                27 亚家族 A 成员 1(cytochrome P450 family 27 subfamily A member 1,CYP27A1)活性后,再进行造模和 NB⁃UVB 照射,观察皮
                               +   +      +
                损,检测皮损中 CD3 CD4 IL⁃17A T 细胞比例、炎症因子表达情况、VDR mRNA 表达情况和血清中 25(OH)D3、1,25(OH) 2D3
                的含量。结果:银屑病样小鼠模型血清中25(OH)D3、1,25(OH) 2D3含量和皮损中VDR的mRNA表达均显著降低。NB⁃UVB照
                射银屑病样小鼠模型后,相比模型组,小鼠血清中25(OH)D3、1,25(OH) 2D3含量和皮损中VDR的mRNA表达上调,皮损中炎症
                因子IL⁃17A、IL⁃23、TNF⁃α、IL⁃1β的表达及含量均下调、CD3 CD4 IL⁃17A T细胞比例也显著下降。使用Dafadine⁃A预处理小鼠
                                                                       +
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                后进行造模联合NB⁃UVB照射,相比IMQ联合NB⁃UVB照射组,血清中25(OH)D3、1,25(OH) 2D3含量和皮损中VDR的mRNA表
                                        +
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                达均显著降低,皮损中CD3 CD4 IL⁃17A T细胞比例和炎症因子IL⁃17A、IL⁃23、TNF⁃α、IL⁃1β的含量均显著升高。结论:NB⁃UVB
                照射通过促进VD代谢缓解银屑病样小鼠皮肤炎症。特异性阻断VD代谢关键酶CYP27A1活性后,NB⁃UVB 照射缓解银屑病
                样小鼠皮损及炎症反应的效应显著减弱。
               [关键词] 窄谱中波紫外线;银屑病;维生素D;CYP27A1;炎症
               [中图分类号] R758.63                   [文献标志码] A                     [文章编号] 1007⁃4368(2025)12⁃1747⁃09
                doi:10.7655/NYDXBNSN250629


                Effect and mechanism of narrow ⁃ band ultraviolet B in promoting vitamin D metabolism
                and alleviating psoriasis⁃like dermatitis in mice

                                                 *
                HU Feng,ZHOU Yu,LI Xinyu,QU Zilu
                Department of Dermatology,Wuhan First Hospital,Wuhan 430022,China


               [Abstract] Objective:To investigate the effect and mechanism of narrow⁃band ultraviolet B(NB⁃UVB)in promoting vitamin D(VD)
                metabolism and alleviating imiquimod(IMQ)induced psoriasis⁃like dermatitis in mice. Methods:C57BL/6 mice were treated with
                IMQ cream on the back skin to induce psoriasis⁃like dermatitis. The levels of VD metabolites 25(OH)D3 and 1,25(OH) 2D3 in serum
                were detected,as well as the expression of VD receptor(VDR)mRNA in the skin lesions. After determining the irradiation energy of
                NB⁃UVB irradiated mice,the model group combined with NB⁃UVB irradiation was performed to observe mouse skin lesions. The levels
                of 25(OH)D3,1,25(OH) 2D3 in serum,VDR and inflammatory factors[interleukin(IL)⁃17A,IL⁃23,tumor necrosis factor(TNF)⁃α,IL⁃1β]
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                mRNA expression and inflammatory factors protein contents in skin lesions,and the proportion of CD3 CD4 IL⁃17A T cells were
                detected. After pretreatment with the specific inhibitor Dafadine ⁃ A to block cytochrome P450 family 27 subfamily A member 1
               (CYP27A1,a key enzyme in vitamin D metabolism)activity,the mice underwent psoriasiform dermatitis induction followed by NB⁃
               [基金项目] 湖北省自然科学基金面上项目(2023AFB1072);武汉市自然科学基金(2024020801020391)
                通信作者(Corresponding author),E⁃mail:quzilu0267@163.com(ORCID:0000⁃0003⁃2694⁃7158)
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