PMID- 28441982 OWN - NLM STAT- MEDLINE DCOM- 20180212 LR - 20180813 IS - 1539-6304 (Electronic) IS - 1088-5412 (Linking) VI - 38 IP - 3 DP - 2017 May 1 TI - 25-Hydroxyvitamin D, biomarkers of eosinophilic inflammation, and airway remodeling in children with newly diagnosed untreated asthma. PG - 29-36 LID - 10.2500/aap.2017.38.4026 [doi] AB - BACKGROUND: Low 25-hydroxyvitamin D (25[OH]D) and asthma development may be related to airway remodeling and eosinophilia. Periostin is proposed as a key molecule that links remodeling and eosinophilic inflammation. OBJECTIVE: We evaluated the association of 25(OH)D concentration with periostin, peripheral blood eosinophil counts, and immunoglobulin E (IgE) in children with newly diagnosed asthma. METHODS: The study included 150 children: 110 with atopic asthma and 40 constituted a reference group. Fasting blood was collected for cell counts and serum for measurements of 25(OH)D, periostin, IgE, and C-reactive protein (CRP) concentrations. RESULTS: Significantly lower 25(OH)D, elevated IgE concentrations, and eosinophil counts were found in children with asthma compared with the reference group (p = 0.0001). A lower forced expiratory volume in the first second of expiration percentage predicted value was associated with a lower 25(OH)D value in children with asthma. The bronchodilator reversibility was inversely related to serum 25(OH)D concentrations (R = -0.45, p = 0.029). The children with asthma and with a 25(OH)D deficient concentration (/=30 ng/L). Additional analysis revealed statistically significant differences (p = 0.013) when comparing periostin concentrations between subjects with a 25(OH)D deficient concentration (20 ng/mL). In individuals with asthma, a 25(OH)D concentration of <30 ng/mL had no impact on eosinophilia, whereas IgE concentrations were associated with increased eosinophils, and the effect of periostin on eosinophilia was small although significant. Multivariate regression, including 25(OH)D concentration, CRP level, eosinophil counts, and sex, accounted for 7% of periostin variation in subjects with asthma. CONCLUSION: In newly diagnosed pediatric asthma, 25(OH)D concentrations revealed a small although significant association with periostin levels but no effect on eosinophilia. A low vitamin D concentration may increase airway remodeling induced by inflammatory mediators, but further clinical studies aimed to explain the causal link between vitamin D insufficiency and asthma are needed. FAU - Sypniewska, Grazyna AU - Sypniewska G FAU - Krintus, Magdalena AU - Krintus M FAU - Fulgheri, Gabriele AU - Fulgheri G FAU - Siodmiak, Joanna AU - Siodmiak J FAU - Kuligowska-Prusinska, Magdalena AU - Kuligowska-Prusinska M FAU - Stepien-Jaszowska, Beata AU - Stepien-Jaszowska B FAU - Staszak-Kowalska, Radoslawa AU - Staszak-Kowalska R FAU - Zawadzka-Krajewska, Anna AU - Zawadzka-Krajewska A FAU - Kierat, Szymon AU - Kierat S FAU - Bergmann, Katarzyna AU - Bergmann K FAU - Demkow, Urszula AU - Demkow U LA - eng PT - Journal Article PL - United States TA - Allergy Asthma Proc JT - Allergy and asthma proceedings JID - 9603640 RN - 0 (Biomarkers) RN - 0 (Cell Adhesion Molecules) RN - 0 (POSTN protein, human) RN - 1406-16-2 (Vitamin D) RN - 37341-29-0 (Immunoglobulin E) RN - 9007-41-4 (C-Reactive Protein) RN - A288AR3C9H (25-hydroxyvitamin D) SB - IM MH - *Airway Remodeling MH - Asthma/blood/*etiology/pathology MH - Biomarkers/blood MH - C-Reactive Protein/analysis MH - Case-Control Studies MH - Cell Adhesion Molecules/blood MH - Child MH - Child, Preschool MH - Eosinophilia/*complications/diagnosis/pathology MH - Eosinophils/pathology MH - Female MH - Humans MH - Immunoglobulin E/blood MH - Inflammation/etiology MH - Male MH - Vitamin D/*analogs & derivatives/blood MH - Vitamin D Deficiency/complications EDAT- 2017/04/27 06:00 MHDA- 2018/02/13 06:00 CRDT- 2017/04/27 06:00 PHST- 2017/04/27 06:00 [entrez] PHST- 2017/04/27 06:00 [pubmed] PHST- 2018/02/13 06:00 [medline] AID - 10.2500/aap.2017.38.4026 [doi] PST - ppublish SO - Allergy Asthma Proc. 2017 May 1;38(3):29-36. doi: 10.2500/aap.2017.38.4026.