Sanna Toppila-Salmi1,2, Annika T Luukkainen3, Baizhuang Xu4, Jussi Lampi4, Juha Auvinen5, Kishor Dhaygude3, Marjo-Riitta Järvelin5,6, Juha Pekkanen4,7. 1. Medicum, Haartman Institute, University of Helsinki, Helsinki, Finland sanna.salmi@helsinki.fi. 2. Skin and Allergy Hospital, Helsinki University Hospital, Helsinki, Finland. 3. Medicum, Haartman Institute, University of Helsinki, Helsinki, Finland. 4. Environment Health Unit, National Institute for Health and Welfare, Kuopio, Finland. 5. Center for Life Course Health Research, Oulu, Finland. 6. Imperial College London, London, UK. 7. Dep of Public Health, University of Helsinki, Helsinki, Finland.
Abstract
RATIONALE: Environmental tobacco smoke (ETS) exposure increases asthma risk in children. There is limited knowledge of prenatal ETS for adult-onset asthma. OBJECTIVES: To determine the association between prenatal ETS and adult onset asthma. MEASUREMENTS AND MAIN RESULTS: The questionnaire and clinical data of 5200 people, free of physician-diagnosed asthma by 31 years of age, who were included in the Northern Finland Birth Cohort 1966 Study was used. The association of maternal smoking during the last 3 months of pregnancy with onset of physician-diagnosed asthma and with lung function in adult offspring was studied using adjusted multivariate regression analyses. The cumulative incidence of physician-diagnosed asthma between the ages of 31 and 46 years was 5.1% among men and 8.8% among women. Gestational smoke exposure was associated with adult-onset asthma among offspring (adjusted OR 1.54, 95% CI 1.04-2.29), namely among offspring who reported either past non-diagnosed asthma (OR 9.63, 95% CI 2.28-40.67) or past cough with wheeze (3.21, 95% CI 1.71-6.05). A significant association was detected between gestational smoke exposure and the offspring's forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ratio at 31 years of age. In offspring with the haplotype rs11702779-AA of RUNX1, gestational smoke exposure was associated with adult-onset asthma (5.53, 95% CI 2.11-14.52, adjusted p-value for interaction 0.10). CONCLUSION: Maternal smoking during pregnancy is associated with the cumulative incidence of asthma in offspring between the ages of 31 and 46 years. The association was accentuated in offspring who at age 31, reported having past respiratory problems and/or who had haplotype rs11702779-AA. A reduction in FEV1/FVC ratio was also observed at age 31 years in offspring with gestational smoke exposure. These results could reflect the early vulnerability of offspring's airways to ETS and its putative long-term effects.
RATIONALE: Environmental tobacco smoke (ETS) exposure increases asthma risk in children. There is limited knowledge of prenatal ETS for adult-onset asthma. OBJECTIVES: To determine the association between prenatal ETS and adult onset asthma. MEASUREMENTS AND MAIN RESULTS: The questionnaire and clinical data of 5200 people, free of physician-diagnosed asthma by 31 years of age, who were included in the Northern Finland Birth Cohort 1966 Study was used. The association of maternal smoking during the last 3 months of pregnancy with onset of physician-diagnosed asthma and with lung function in adult offspring was studied using adjusted multivariate regression analyses. The cumulative incidence of physician-diagnosed asthma between the ages of 31 and 46 years was 5.1% among men and 8.8% among women. Gestational smoke exposure was associated with adult-onset asthma among offspring (adjusted OR 1.54, 95% CI 1.04-2.29), namely among offspring who reported either past non-diagnosed asthma (OR 9.63, 95% CI 2.28-40.67) or past cough with wheeze (3.21, 95% CI 1.71-6.05). A significant association was detected between gestational smoke exposure and the offspring's forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ratio at 31 years of age. In offspring with the haplotype rs11702779-AA of RUNX1, gestational smoke exposure was associated with adult-onset asthma (5.53, 95% CI 2.11-14.52, adjusted p-value for interaction 0.10). CONCLUSION: Maternal smoking during pregnancy is associated with the cumulative incidence of asthma in offspring between the ages of 31 and 46 years. The association was accentuated in offspring who at age 31, reported having past respiratory problems and/or who had haplotype rs11702779-AA. A reduction in FEV1/FVC ratio was also observed at age 31 years in offspring with gestational smoke exposure. These results could reflect the early vulnerability of offspring's airways to ETS and its putative long-term effects.
Authors: Anu Laulajainen-Hongisto; Annina Lyly; Paula Kauppi; Sanna Toppila-Salmi; Tanzeela Hanif; Kishor Dhaygude; Matti Kankainen; Risto Renkonen; Kati Donner; Pirkko Mattila; Tuomas Jartti; Jean Bousquet Journal: Clin Transl Allergy Date: 2020-10-28 Impact factor: 5.871