Abstract
Interleukin (IL)-1 family comprise 11 members that play an important role in immune regulation and inflammatory process. Retinoids exert complex effects on the immune system, having anti-inflammatory effects in chronic dermatological diseases. Vitamin D (vitD) and analogs have been shown to suppress TNF-α-induced IL-1α in human keratinocytes (KCs). In the present study, we investigated IL-1 family members in psoriasis and the effects of vitD and retinoic acid (RA) on these members. We analyzed IL-1 family members gene expression in psoriatic skin and in ex vivo skin organ culture exposed to TNF-α, IL-17 or broadband UVB; afterwards, treatment with vitD or RA was performed and IL-1 family members mRNA was evaluated. Similarly, KCs were stimulated with IL-17 and subsequently treated with vitD. IL-1 family members were enhanced in psoriatic skin and in ex vivo skin organ cultures after pro-inflammatory stimuli (TNF-α, IL-17 and UVB). RA and vitD were able to suppress this enhancement.
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Balato, A., Schiattarella, M., Lembo, S. et al. Interleukin-1 family members are enhanced in psoriasis and suppressed by vitamin D and retinoic acid. Arch Dermatol Res 305, 255–262 (2013). https://doi.org/10.1007/s00403-013-1327-8
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DOI: https://doi.org/10.1007/s00403-013-1327-8