Airway IFN-γ production during RSV bronchiolitis is associated with eosinophilic inflammation.
Lung
; 190(2): 183-8, 2012 Apr.
Article
em En
| MEDLINE
| ID: mdl-22160185
ABSTRACT
STUDY OBJECTIVE:
This study was designed to investigate the possible role of IFN-γ in eosinophil degranulation that occurs during respiratory syncytial virus (RSV) bronchiolitis.METHODS:
Sixty-seven infants, 2-24 months old and hospitalized with their first episode of acute RSV bronchiolitis, were selected for this study. Eosinophil-active cytokine and chemokine profiles in nasal lavage supernatants taken within the first 48 h of admission were determined by a multiplex bead array system (Luminex). Comparisons were made with control (Control group) subjects (n = 20).RESULTS:
Nasal IFN-γ levels were significantly higher (P < 0.0001) in RSV bronchiolitis (median = 4.4 pg/ml) infants compared to controls (0.0 pg/ml). IFN-γ levels correlated significantly with the levels of nasal eotaxin (r = 0.566, P < 0.0001), RANTES (r = 0.627, P < 0.0001), GM-CSF (r = 0.849, P < 0.0001), and EDN (r = 0.693, P < 0.001). Nasal interleukin (IL)-4, IL-5, and IL-13 were below sensitivity levels in most RSV bronchiolitis and control subjects.CONCLUSION:
These results suggest that IFN-γ may play an important role in eosinophilic inflammation in RSV bronchiolitis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bronquiolite
/
Interferon gama
/
Infecções por Vírus Respiratório Sincicial
/
Eosinofilia
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
Idioma:
En
Revista:
Lung
Ano de publicação:
2012
Tipo de documento:
Article