Lifetime Risk Factors for Pre- and Post-Bronchodilator Lung Function Decline. A Population-based Study.

2020-03

Bui, Dinh S

Perret, Jennifer L

Walters, E Haydn

Abramson, Michael J

Burgess, John A

Bui, Minh Q

Bowatte, Gayan

Lowe, Adrian J

Russell, Melissa A

Alif, Sheikh M

Thompson, Bruce R

Hamilton, Garun S

Giles, Graham G

Thomas, Paul S

Morrison, Stephen

Johns, David P

Knibbs, Luke D

Zock, Jan-Paul

Marcon, Alessandro

Garcia-Aymerich, Judith

Erbas, Bircan

Jarvis, Deborah

Svanes, Cecilie

Lodge, Caroline J

Dharmage, Shyamali C

bronchodilator

decline

interaction

lung function

susceptibility

Journal Article

0000-0002-4388-784X

0000-0002-7097-4586

0000-0001-6063-1937

0000-0001-7034-0615

10.1513/AnnalsATS.201904-329OC

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.

link

Annals of the American Thoracic Society 2020; 17(3): 302-312.

Annals of the American Thoracic Society