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Abstract
Chronic Idiopathic Urticaria (CIU) is a cutaneous disorder for which there is no identifiable specific etiologic agent. Some recent evidences suggest that CIU might be an autoimmune disease. We analyzed immunological features occurring in CIU and evaluated effectiveness and tolerance of Cyclosporin A (CsA) treatment in patients unresponsive to antihistaminic treatment.
Twenty patients with CIU were recruited after a selective diagnostic protocol and were divided into two groups. CsA was prescribed for group 1 and Prednisone for group 2 as control, for 8 weeks. Before and after the therapy we performed on all patients immunological studies.
For all patients symptoms disappeared after a few days of therapy. Before therapy all patients showed activated B cells (CD19+CD23+ cells) and among B CD19+ cells, about 20% were CD5+ (cells that synthesize natural autoantibodies). After treatment with Prednisone in group 2, a significant reduction of CD4+ lymphocytes (p + 0,01) was observed.
Our findings might support the CIU autoimmune pathogenetic hypothesis. The clinical remission in the CsA-treated group confirmed the therapeutic effectiveness of this therapy in antihistaminic unresponsive CIU and, at dosage used, side effects were rare, mild and reversible. Thus, CsA might be a good therapeutic alternative in CIU patients unresponsive to conventional treatments.