β2-adrenoceptor polymorphisms and asthma phenotypes: Interactions with passive smoking

Brad Zhang, Catherine Hayden, Siew-Kim Khoo, Pierre Candelaria, Ingrid Laing, S Turner, Peter Franklin, Stephen Stick, Louis Landau, Jack Goldblatt, Peter Le Souef

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The aim of the present study was to assess the effects of possible interactions between beta(2)-adrenoceptor gene polymorphisms and passive smoking on forced expiratory volume in one second (FEV1), forced vital capacity (FVC) and exhaled nitric oxide (eNO) in children aged 11 yrs. A cross-sectional analysis of the longitudinal cohort was conducted for associations between beta(2)-adrenoceptor gene polymorphisms and lung function and eNO with regard to passive smoking. Among children exposed to tobacco smoke, those with Arg16 (at least one Arg allele) exhibited lower adjusted mean FEV1 (2.19 versus 2.38 L) and FVC (2.43 versus 2.64 L) than Gly16 homozygotes. Those with Gln27 (at least one Gin allelle) also exhibited a lower adjusted mean FEV1 relative to Glu27 homozygotes (2.24 versus 2.39 L). Among children with no exposure to smoking, those with Arg16 or Gln27 showed lower adjusted geometric mean eNO levels compared with Gly16 homozygotes (15.4 versus 30.9 ppb) and Glu27 homozygotes (18.0 versus 49.7 ppb). In conclusion, passive smoking had a significant effect on associations between beta(2)-adrenoceptor gene polymorphisms and asthma-related phenotypes, enhancing the relationship between Arg-16 and lung function and removing the relationship between Arg16 or Girl and exhaled nitric oxide levels.
Original languageEnglish
Pages (from-to)48-55
JournalThe European Respiratory Journal
Volume30
Issue number1
DOIs
Publication statusPublished - 2007

    Fingerprint

Cite this