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There might be a role for CD200 in the pathogenesis of autoimmune and inflammatory skin disorders

Ayşe Akman-Karakaş, Arzu Didem Yalcin, Saliha Koç, Saadet Gumuslu, Yeşim Yiğiter Şenol, Birgül Özkesici, Gizem Esra Genç, Erkan Ergun, Gozde Ongut, Ertan Yilmaz, Soner Uzun, Erkan Alpsoy

Department of Dermatology and Venerology, Faculty of Medicine, Akdeniz University, Antalya, Turkey

Med Sci Monit 2013; 19:888-891

DOI: 10.12659/MSM.889624

Available online:

Published: 2013-10-25


Background: Soluble CD200 (sCD200) is a novel immuno-effective molecule, which acts to regulate inflammatory and acquired immune responses. Recently, our study group showed that sCD200 was present in serum and blister fluid in a patient with bullous pemphigoid and a patient with toxic epidermal necrolysis. We therefore planned this study to evaluate the sCD200 levels of autoimmune and inflammatory skin disorder patients and to compare them with that of healthy controls.
Material and Methods: Our study included 30 consecutive patients with psoriasis vulgaris, 15 with pemphigus vulgaris, and 15 healthy controls. Clinical examination and laboratory tests were performed on the same day. Psoriasis patients were also assessed with the Psoriasis Area and Severity Index (PASI) and pemphigus patients were assessed using the Pemphigus Disease Area Index (PDAI). Levels of sCD200 in the serum samples were quantified using ELISA kits.
Results: The serum sCD200 level was observed to be statistically significantly higher in patients with psoriasis vulgaris (96.7±15.8) compared to patients with pemphigus vulgaris (76.2±14.6), (p<0.001) and healthy controls (26.8±7.0) (p<0.001). The serum sCD200 levels were observed to be statistically significantly higher in patients with pemphigus vulgaris compared with that in healthy controls (p<0.001). In addition, there was a statistically significant correlation between serum sCD200 levels and PDAI (r=0.987, p=0.001). Nevertheless, there was no statistically significant correlation between serum sCD200 levels and PASI (r=0.154, p=0.407).
Conclusions: sCD200 might play a role in immune response in the pathogenesis of autoimmune and inflammatory skin disorders. However, it remains to be fully elucidated how sCD200 can orchestrate inflammatory response in psoriasis and pemphigus.

Keywords: Antigens, CD - immunology, Analysis of Variance, Case-Control Studies, Enzyme-Linked Immunosorbent Assay, Pemphigus - pathology, Psoriasis - pathology



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