Association between endotoxin and mite allergen exposure with asthma and specific sensitization at age 7 in high-risk children.
Pediatr Allergy Immunol
; 22(3): 320-6, 2011 May.
Article
em En
| MEDLINE
| ID: mdl-21255084
ABSTRACT
The role of endotoxin and house dust mite allergen (HDM) in allergen sensitization and asthma is unclear. The timeframe of exposure and asthma assessment appears critical. We aimed to determine, in children at 7 yr of age, the association between current exposure to endotoxin and HDM and risks of recurrent wheeze, paediatric allergist diagnosed asthma and allergen sensitization. Three hundred and eighty children who had an increased risk of asthma because of family background were assessed at age 7 yr by a questionnaire-standardized interview, allergen skin testing and clinical examination by a paediatric allergist. Dust samples were collected from their homes and analysed for levels of endotoxin and HDM (Der p 1 and Der f 1). Levels of endotoxin in dust samples were associated with protection from paediatric allergist diagnosed asthma with inhaled steroid use (OR 0.69, 95% CI 0.53-0.91) and specific sensitization to dog allergen (OR 0.68, 95% CI 0.51-0.90) at the age of 7 yr; both endotoxin and HDM were associated with decreased risk of sensitization to dog allergen. In high-risk children at age 7, endotoxin levels were associated with decreased sensitization to dog, as well as with decreased asthma.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Asma
/
Antígenos de Dermatophagoides
/
Cães
/
Poeira
/
Endotoxinas
/
Hipersensibilidade
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Qualitative_research
/
Risk_factors_studies
Limite:
Animals
/
Child
/
Humans
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article