Vitamin D supplementation modulates the immune system and improves atopic dermatitis in children

International Archives of Allergy and Immunology
Paola Di FilippoFrancesco Chiarelli

Abstract

Vitamin D seems to influence the evolution of atopic dermatitis (AD) in children. We tested the vitamin D serum levels of 39 children with AD (AD group t0) and of 20 nonallergic healthy controls (C group). AD severity was evaluated using the AD scoring system (SCORAD index). Cytokine serum levels (IL-2, IL-4, IL-6, IFN-γ, TNF-α) and atopy biomarkers were also measured. The patients were then treated with vitamin D oral supplementation of 1,000 IU/day (25 mg/day) for 3 months. We then reevaluated the vitamin D serum levels, AD severity and cytokine serum levels in all of the treated children (AD group t1). The cross-sectional analysis on patients affected by AD (AD group t0) showed that the initial levels of all the tested cytokines except for TNF-α were higher than those of the healthy control group (C group), falling outside the normal range. After 3 months of supplementation the patients had significantly increased vitamin D levels (from 22.97 ± 8.03 to 29.41 ± 10.73 ng/ml; p = 0.01). A concomitant significant reduction of both the SCORAD index (46.13 ± 15.68 at the first visit vs. 22.57 ± 15.28 at the second visit; p < 0.001) and of all the altered cytokines (IL-2, IL-4, IL-6, IFN-γ) was also found. This study showed vitamin...Continue Reading

Citations

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