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Psoriasis is linked to autoimmunity. - GreenMedInfo Summary

Abstract Title:

Psoriasis patients generate increased serum levels of autoantibodies to tumor necrosis factor-alpha and interferon-alpha.

Abstract Source:

J Dermatol Sci. 2009 Dec;56(3):163-7. Epub 2009 Oct 2. PMID: 19800767

Abstract Author(s):

R Bergman, M Ramon, G Wildbaum, E Avitan-Hersh, E Mayer, A Shemer, N Karin

Article Affiliation:

Department of Dermatology, Rambam Medical Center, Israel. r_bergman@rambam.health.gov.il

Abstract:

BACKGROUND: It has been shown in experimental animal models that were extended to humans that during autoimmune conditions, the immune system generates beneficial autoantibody (auto Ab) response to a limited number of inflammatory mediators that drive the pathogenesis of the disease. OBJECTIVE: To investigate the presence of auto Abs to cytokines and chemokines in psoriasis. METHODS: Sera were obtained from patients with psoriasis (n=37), atopic dermatitis (AD) (n=18) and healthy volunteers (n=56). The titers of auto (Abs) to TNF-alpha, interferon-alpha (IFN-alpha), interleukin-17 (IL-17), and chemokines CCL2, CCL3 and CCL5 were determined using enzyme-linked immunosorbant assay. Neutralizing activities of high-titer auto Abs to TNF-alpha and IFN-alpha were determined using functional in vitro assays. RESULTS: Highly significant increased titers of auto Abs to TNF-alpha and IFN-alpha were detected in patients with psoriasis compared with healthy subjects and patients with AD (mean titers more than fourfold). These auto Abs demonstrated some neutralizing activity in vitro, but their serum levels did not correlate with the intensity and duration of the disease and with phototherapy induced remissions. Significantly increased titers albeit to a lesser extent, of auto Abs to CCL3 were detected in AD. CONCLUSIONS: Psoriasis patients produce markedly increased levels of auto Abs to TNF-alpha and IFN-alpha which are two of the key cytokines in this disorder. The presence of these auto Abs which possess some neutralizing activity in vitro, may be an epiphenomenon or might play a role in attempting to suppress the ongoing inflammatory process.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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