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  • Title: CD4(+)IL-13(+) cells in peripheral blood well correlates with the severity of atopic dermatitis in children.
    Author: La Grutta S, Richiusa P, Pizzolanti G, Mattina A, Pajno GB, Citarrella R, Passalacqua G, Giordano C.
    Journal: Allergy; 2005 Mar; 60(3):391-5. PubMed ID: 15679728.
    Abstract:
    BACKGROUND: In atopic dermatitis (AD) a Th1/Th2 imbalance has been reported, and interleukin (IL)-13 seems to play a pivotal role in the inflammatory network. We tried to assess the correlation between the immunological marker CD4(+)IL-13(+) and the clinical phase of extrinsic AD in children. METHODS: Twenty children with AD were studied. Assessed parameters were: clinical severity (SCORAD index), total serum immunoglobulin E (IgE), blood eosinophil count, and percentage of CD4(+)IFNgamma(+), CD4(+)IL-4(+), CD4(+)IL-13(+) T cells. Determinations were carried out in the acute phase and after clinical remission were achieved. Ten nonatopic-matched children served as controls. RESULTS: At baseline, AD was mild in 25%, moderate in 50% and severe in 25% of children. In the acute phase a significant relationship between the eosinophil count and the SCORAD index was found (P = 0.0001). Blood CD4(+)IL-4(+) were significantly higher in the AD group (median 17.0, range: 13.7-21.4) than in controls (12.6, 6.4-17.2, P < 0.0001). CD4(+)IL-13(+) cells in the AD group well correlated (P = 0.0007) with SCORAD index. At remission, a significant correlation between SCORAD index and eosinophil count was found (P < 0.03) and the percentage of CD4(+)IL-13(+) cells globally decreased (P < 0.0001), while no difference was found among SCORAD classes. CONCLUSION: This study confirms the Th2 profile predominance in the peripheral blood of children with AD, and evidences close relationship between the number of CD4(+)IL-13(+) T cells and the disease's severity.
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