The Relationship Between Serum 25 Hydroxy Vitamin D Levels and Asthma in Children
Allergy, Asthma & Immunology Research
;
: 251-255, 2011.
Article
Dans Anglais
| WPRIM
| ID: wpr-13722
ABSTRACT
PURPOSE:
Asthma and other allergic disorders have increased over the past decades in nearly all nations. Many studies have suggested the role of vitamin D deficiency in both T-helper1 and T-helper2 diseases; however, the association between vitamin D, allergy, and asthma remains uncertain. In this study, the associations of 25-hydroxy vitamin D3 levels with asthma and with the severity of asthma were evaluated.METHODS:
This cross-sectional study was conducted on 50 asthmatic children and 50 healthy controls aged 6-18 years. Serum 25-hydroxy vitamin D3 levels were determined and compared between the two groups. The relationship between serum vitamin D levels and pulmonary function test outcomes and eosinophil counts were examined in asthmatic patients.RESULTS:
Univariate analysis of the relationship between asthma and vitamin D showed that decreased vitamin D levels were associated with significantly increased odds of asthmatic state (P=0.002). In a multivariate analysis after adjustment for age, body mass index, and sex, the relationship between vitamin D and asthma increased. In asthmatic patients, 25-hydroxy vitamin D levels had direct and significant correlations with both predicted FEV1 (R2=0.318; P=0.024) and FEV1/FVC (R2=0.315; P=0.026). There were no associations between vitamin D level and eosinophil counts, duration of disease, and the number of hospitalization or unscheduled visits in the previous year (P>0.05).CONCLUSIONS:
These results showed that serum 25-hydroxy vitamin D levels were inversely associated with asthma, and there was a direct and significant relationship between vitamin D levels and pulmonary function test outcomes in asthmatic children. An interventional study in asthmatic patients with low serum vitamin D concentration may establish a causal relationship between asthma and vitamin D.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Tests de la fonction respiratoire
/
Asthme
/
Vitamine D
/
Carence en vitamine D
/
Vitamines
/
Indice de masse corporelle
/
Études transversales
/
Analyse multifactorielle
/
Cholécalciférol
/
Granulocytes éosinophiles
Type d'étude:
Étude observationnelle
/
Étude de prévalence
/
Étude pronostique
/
Facteurs de risque
Limites du sujet:
Adulte très âgé
/
Enfant
/
Humains
langue:
Anglais
Texte intégral:
Allergy, Asthma & Immunology Research
Année:
2011
Type:
Article
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