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  • Title: Differential suppression of dendritic cell cytokine production by anti-inflammatory drugs.
    Author: Toebak MJ, de Rooij J, Moed H, Stoof TJ, von Blomberg BM, Bruynzeel DP, Scheper RJ, Gibbs S, Rustemeyer T.
    Journal: Br J Dermatol; 2008 Feb; 158(2):225-33. PubMed ID: 18028503.
    Abstract:
    BACKGROUND: Various anti-inflammatory drugs are available for the treatment of skin disorders. In these diseases, untoward immune responses to endogenous and/or environmental antigens are initiated by maturation and polarization of dendritic cells (DC). OBJECTIVE: To explore the suppressive effects of anti-inflammatory drugs on DC maturation and, in particular, polarization. METHODS: Exposure of DC to nickel in vitro results in DC maturation and secretion of both type 1 and type 2 cytokines, thereby providing a model to study the effects of anti-inflammatory drugs on DC responses. The inhibitory effects of anti-inflammatory drugs (ciclosporin, dexamethasone, diclofenac, dimethylfumarate, hydrocortisone, lactoferrin, 1-alpha,25-dihydroxyvitamin D3) on DC maturation (CD83, CD86, HLA-DR, CXCL8) and polarization (type 1: IL-12p70, TNF-alpha; type 2: IL-10, CCL17) were studied. RESULTS: All anti-inflammatory drugs, except for lactoferrin, had inhibitory effects on DC maturation. Hydrocortisone and dexamethasone exclusively suppressed the release of type 1 cytokines. A less pronounced, but similar profile was observed for dimethylfumarate and 1-alpha,25-dihydroxyvitamin D3. Ciclosporin suppressed both type 1 and 2 cytokines. In contrast, diclofenac suppressed only type 2 DC cytokine secretion. CONCLUSION: The present results give more insight into the pharmacological effects of immunosuppressive drugs on the immune system, and can thereby contribute to a more rational selection of anti-inflammatory drugs for the treatment of inflammatory skin disorders.
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