Determinants of airway responsiveness to histamine in children

S.W. Turner, Lyle Palmer, P.J. Rye, Neil Gibson, S. Young, Jack Goldblatt, Louis Landau, Peter Le Souef

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Increased airway responsiveness (AR) is associated with asthma, but not all individuals with increased AR have asthma. The aim of this study was to identify factors, other than physician-diagnosed asthma (PDA), which are associated with increased AR.In a longitudinal study, data were collected on atopy and lower respiratory tract illness (LRTI) in infancy, and AR (expressed as dose-response slope (DRS)), atopy, tobacco-smoke exposure and PDA in childhood. Atage 6 yrs, DRS was assessed in 102 children, of whom 22 (22%) had PDA; the corresponding figures at 11 yrs of age were 176 and 29 (15%). At age 6 yrs, DRS was significantly associated with PDA, current atopy and parental smoking (n=83). At age 11 yrs, DRS was significantly associated with PDA, current atopy and LRTI in the first six months (n=75). There was a significant positive interaction between atopy at age 12 months and PDA age 11 yrs.In conclusion, these data suggest that factors other than asthma or atopy may determine the level of airway responsiveness in children. In children with asthma, airway responsiveness may be influenced by the early onset of atopy. The current findings may explain the inconsistent relationship between airway responsiveness and asthma.
Original languageEnglish
Pages (from-to)462-467
JournalThe European Respiratory Journal
Volume25
Issue number3
DOIs
Publication statusPublished - 2005

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