title: Prevention of ultraviolet radiation‑induced immunosuppression by sunscreen in Candida albicans‑induced delayed‑type hypersensitivity.
abstract: Ultraviolet (UV) radiation-induced immunosuppression leading to skin cancer has received increased attention in previous years. The present study aimed to investigate the immunoprotection offered by Anthelios sunscreen in a mouse model of Candida albicans‑induced delayed‑type hypersensitivity. Anthelios sunscreen was applied to the skin on the dorsal skin of BALB/c mice treated with a sub‑erythema dose of solar‑simulated radiation. Delayed‑type hypersensitivity was induced by immunization with Candida albicans. Changes in the skin thickness of the foot pads were measured, and immunosuppression rates were also evaluated. The expression levels of CD207, CD80 and CD86 in the Langerhans cells were semi‑quantitatively detected using Western blotting and immunohistochemical assays. The delayed‑type hypersensitivity mouse model was successfully established. The minimal erythema doses of UVA and UVB exposure to the mice were 2,000 and 145 mJ/cm2, respectively. The immunosuppression rates in the sunscreen group and non‑sunscreen group were 24.39 and 65.85%, respectively (P<0.01). The results of the Western blotting and immunohistochemistry showed that the expression levels of CD207 (P<0.01), CD80 (P<0.05) and CD86 (P<0.01) were higher in the sunscreen group, compared with those in the non‑sunscreen group. UV exposure reduced Candida albicans antigen‑induced delayed‑type hypersensitivity. Anthelios sunscreen was found to protect the skin from immunosuppression through the activation of epidermal Langerhans cells.
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Chen
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Runxiang
authors.initials: R
authors.lastname: Li
authors.affiliation: Department of Dermatology, Haikou City People's Hospital, Haikou, Hainan 570208, P.R. China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Bihua
authors.initials: B
authors.lastname: Liang
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Shaoyin
authors.initials: S
authors.lastname: Ma
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Zhenjie
authors.initials: Z
authors.lastname: Li
authors.affiliation: Guangzhou Institute of Dermatology, Guangzhou, Guangdong 510095, P.R. China.
authors.forename: Huilan
authors.initials: H
authors.lastname: Zhu
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000378:metabolism; D015415:Biomarkers; D001706:Biopsy; D002176:Candida albicans / Q000276:immunology*; D004195:Disease Models, Animal; D004307:Dose-Response Relationship, Radiation; D006968:Hypersensitivity, Delayed / Q000276:immunology* / Q000378:metabolism / Q000473:pathology* / Q000517:prevention & control; D007114:Immunization; D007150:Immunohistochemistry; D007165:Immunosuppression Therapy; D051379:Mice; D013473:Sunscreening Agents; D014466:Ultraviolet Rays / Q000009:adverse effects*
chemical_list: D015703:Antigens, CD; D015415:Biomarkers; D013473:Sunscreening Agents