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Lifetime risk factors for pre- and post-bronchodilator lung function decline: A population-based study

journal contribution
posted on 2023-05-20, 10:12 authored by Bui, DS, Perret, JL, Eugene WaltersEugene Walters, Abramson, MJ, Burgess, JA, Bui, MQ, Bowatte, G, Lowe, AJ, Russell, MA, Alif, SM, Thompson, BR, Hamilton, GS, Giles, GG, Thomas, PS, Morrison, S, Johns, DP, Knibbs, LD, Zock, JP, Marcon, A, Garcia-Aymerich, J, Erbas, B, Jarvis, D, Svanes, C, Lodge, CJ, Dharmage, SC

Rationale: Interactions between early life and adult insults on lung function decline are not well understood, with most studies investigating prebronchodilator (pre-BD) FEV1 decline.

Objectives: To investigate relationships between adult risk factors and pre- and post-BD lung function decline and their potential effect modification by early life and genetic factors.

Methods: Multiple regression was used to examine associations between adult exposures (asthma, smoking, occupational exposures, traffic pollution, and obesity) and decline in both pre- and post-BD spirometry (forced expiratory volume in 1 s [FEV1], forced vital capacity [FVC], and FEV1/FVC) between ages 45 and 53 years in the Tasmanian Longitudinal Health Study (n = 857). Effect modification of these relationships by childhood respiratory risk factors, including low childhood lung function and GST (glutathione S-transferase) gene polymorphisms, was investigated.

Results: Baseline asthma, smoking, occupational exposure to vapors/gases/dusts/fumes, and living close to traffic were associated with accelerated decline in both pre- and post-BD FEV1. These factors were also associated with FEV1/FVC decline. Occupational exposure to aromatic solvents was associated with pre-BD but not post-BD FEV1 decline. Maternal smoking accentuated the effect of personal smoking on pre- and post-BD FEV1 decline. Lower childhood lung function and having the GSTM1 null allele accentuated the effect of occupational exposure to vapors/gases/ dusts/fumes and personal smoking on post-BD FEV1 decline. Incident obesity was associated with accelerated decline in FEV1 and more pronounced in FVC.

Conclusions: This study provides new evidence for accentuation of individual susceptibility to adult risk factors by low childhood lung function, GSTM1 genotype, and maternal smoking.


National Health & Medical Research Council


Publication title

Annals of the American Thoracic Society








Tasmanian School of Medicine


American Thoracic Society

Place of publication

United States

Rights statement

Copyright 2020 by the American Thoracic Society

Repository Status

  • Restricted

Socio-economic Objectives

Clinical health not elsewhere classified

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