Title |
Increased Interleukin-19 Expression in Cutaneous T-cell Lymphoma and Atopic Dermatitis.
|
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Published in |
Acta Dermato-Venereologica, January 2017
|
DOI | 10.2340/00015555-2723 |
Pubmed ID | |
Authors |
Tomonori Oka, Makoto Sugaya, Naomi Takahashi, Rina Nakajima, Sayaka Otobe, Miyoko Kabasawa, Hiraku Suga, Tomomitsu Miyagaki, Yoshihide Asano, Shinichi Sato |
Abstract |
Interleukin-19 (IL-19), a pro-inflammatory cytokine known to stimulate the production of T helper type 2 (Th2) cytokines, is induced by IL-17A and highly expressed in the lesional skin of psoriasis and atopic dermatitis (AD). This aim of this study was to investigate whether IL-19 is involved in cutaneous T-cell lym-phoma (CTCL) and AD. IL-19 levels were significantly higher in the sera of patients with AD and those with advanced-stage CTCL than in normal controls, correlating significantly with clinical disease markers. IL-19 mRNA levels in lesional skin of both diseases were significantly elevated. Immunohistochemical staining revealed that IL-19 was expressed in the epidermis of AD skin and CTCL skin. In vitro, IL-17A and IL-4 increased IL-19 mRNA expression in human keratinocytes. Thus, IL-19 was increased in the sera and skin of AD and CTCL. These results suggest that IL-19 is important for bridging Th17 to Th2 in these diseases. |
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