Vitamin D insufficiency is associated with challenge-proven food allergy in infants.
J Allergy Clin Immunol
; 131(4): 1109-16, 1116.e1-6, 2013 Apr.
Article
em En
| MEDLINE
| ID: mdl-23453797
ABSTRACT
BACKGROUND:
Epidemiological evidence has shown that pediatric food allergy is more prevalent in regions further from the equator, suggesting that vitamin D insufficiency may play a role in this disease.OBJECTIVE:
To investigate the role of vitamin D status in infantile food allergy.METHODS:
A population sample of 5276 one-year-old infants underwent skin prick testing to peanut, egg, sesame, and cow's milk or shrimp. All those with a detectable wheal and a random sample of participants with negative skin prick test results attended a hospital-based food challenge clinic. Blood samples were available for 577 infants (344 with challenge-proven food allergy, 74 sensitized but tolerant to food challenge, 159 negative on skin prick test and food challenge). Serum 25-hydroxyvitamin D levels were measured by using liquid chromatography tandem mass spectrometry. Associations between serum 25-hydroxyvitamin D and food allergy were examined by using multiple logistic regression, adjusting for potential risk and confounding factors.RESULTS:
Infants of Australian-born parents, but not of parents born overseas, with vitamin D insufficiency (≤50 nmol/L) were more likely to be peanut (adjusted odds ratio [aOR], 11.51; 95% CI, 2.01-65.79; P=.006) and/or egg (aOR, 3.79; 95% CI, 1.19-12.08; P=.025) allergic than were those with adequate vitamin D levels independent of eczema status. Among those with Australian-born parents, infants with vitamin D insufficiency were more likely to have multiple food allergies (≥2) rather than a single food allergy (aOR, 10.48; 95% CI, 1.60-68.61 vs aOR, 1.82; 95% CI, 0.38-8.77, respectively).CONCLUSIONS:
These results provide the first direct evidence that vitamin D sufficiency may be an important protective factor for food allergy in the first year of life.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Arachis
/
Vitamina D
/
Deficiência de Vitamina D
/
Sesamum
/
Leite
/
Ovos
/
Hipersensibilidade Alimentar
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
/
Female
/
Humans
/
Infant
/
Male
País/Região como assunto:
Oceania
Idioma:
En
Revista:
J Allergy Clin Immunol
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Austrália