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Article Publish Status: FREE
Abstract Title:

Fucoxanthin Ameliorates Atopic Dermatitis Symptoms by Regulating Keratinocytes and Regulatory Innate Lymphoid Cells.

Abstract Source:

Int J Mol Sci. 2020 Mar 22 ;21(6). Epub 2020 Mar 22. PMID: 32235696

Abstract Author(s):

Chika Natsume, Nao Aoki, Tomoko Aoyama, Keisuke Senda, Mio Matsui, Airi Ikegami, Kosuke Tanaka, Yasu-Taka Azuma, Takashi Fujita

Article Affiliation:

Chika Natsume

Abstract:

Fucoxanthin (FX) is a xanthophyll that is contained abundantly in marine plants. The biological action of FX includes its antioxidant and anti-lipogenic activities, while the precise action of its mechanisms on skin cells has not yet been clarified. The current study examined the effect of FX in comparison with tacrolimus (TAC) on NC/Nga mice, which are an atopic dermatitis (AD) model. FX topical treatment dramatically ameliorated itching behavior over the TAC treatment, which was insufficient for improvement of AD symptoms. In Nc/Nga mice, FX or TAC applied to the skin inhibited eosinophil infiltration with decreased expression of Il-33. FX also stimulated Il-2, Il-5, Il-13, Il-10, and TGF-β expression levels, and Sca1Il-10TGF-βregulatory innate lymphoid cells (ILCreg) were dominantly observed in FX treated skin epidermal keratinocytes and dermal layers. This combined evidence demonstrated that FX exerts anti-inflammatory effects on keratinocytes and ameliorates AD symptoms by regulating ILCreg to normalize immune responses in an atopic dermatitis model.

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