Vitamin D deficiency is associated with diagnosis and severity of childhood atopic dermatitis.
| Autor: | Wang SS; Department of Pediatrics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong., Hon KL, Kong AP, Pong HN, Wong GW, Leung TF |
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| Jazyk: | angličtina |
| Zdroj: | Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology [Pediatr Allergy Immunol] 2014 Feb; Vol. 25 (1), pp. 30-5. Date of Electronic Publication: 2014 Jan 03. |
| DOI: | 10.1111/pai.12167 |
| Abstrakt: | Background: Recent studies implicated the importance of vitamin D in innate immune defense and pathogenesis of allergic diseases. However, the impact of vitamin D deficiency on atopic dermatitis (AD) diagnosis and severity remains unclear. This case-control study investigated such relationship in Hong Kong Chinese children. Methods: Serum 25-hydroxyvitamin D [25(OH)D] levels of 498 AD children and 328 non-allergic controls were measured by immunoassay. Subjects were categorized into deficient (< 25 nm), insufficient (25-49.9 nm), and sufficient (≥ 50 nm) groups. Short-term and long-term AD severity was evaluated by physician-diagnosed SCORing Atopic Dermatitis (SCORAD) and Nottingham Eczema Severity Score (NESS), respectively. Atopy biomarkers were also measured for analysis. Results: The mean (s.d.) serum 25(OH)D levels in AD patients and controls were 28.9 (15.3) and 34.2 (14.5) nm, respectively (p < 0.001). More patients had serum 25(OH)D levels <25 nm than controls (47.8% vs. 26.6%). AD severity as indicated by both SCORAD and NESS showed inverse associations with serum 25(OH)D levels (respective p = 3.6 × 10(-4) and 0.004 when adjusted for age, sex, month of assessment, and immunoassay batch as covariates). Vitamin D-deficient patients (3.08 ± 0.76) had higher logarithm-transformed total IgE than those with insufficient (2.74 ± 0.69) and sufficient (2.72 ± 0.72) serum 25(OH)D levels (p < 0.001). The proportion of subjects with elevated IgE was higher in vitamin D-deficient (43.2%) than vitamin D-sufficient (20.0%) groups. Conclusions: Vitamin D deficiency and insufficiency are prevalent in Hong Kong Chinese children. Vitamin D deficiency is associated with childhood AD and high total IgE. Serum 25(OH)D levels correlate inversely with both long- and short-term AD severity. (© 2013 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.) |
| Databáze: | MEDLINE |
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