RT Journal Article
SR Electronic
T1 Obesity as a susceptibility factor to indoor particulate matter health effects in COPD
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP 1248
OP 1257
DO 10.1183/09031936.00081414
VO 45
IS 5
A1 Meredith C. McCormack
A1 Andrew J. Belli
A1 Deepak A. Kaji
A1 Elizabeth C. Matsui
A1 Emily P. Brigham
A1 Roger D. Peng
A1 Cortlandt Sellers
A1 D'Ann L. Williams
A1 Gregory B. Diette
A1 Patrick N. Breysse
A1 Nadia N. Hansel
YR 2015
UL http://erj.ersjournals.com/content/45/5/1248.abstract
AB Our goal was to investigate whether obesity increases susceptibility to the adverse effects of indoor particulate matter on respiratory morbidity among individuals with chronic obstructive pulmonary disease (COPD). Participants with COPD were studied at baseline, 3 and 6 months. Obesity was defined as a body mass index ≥30 kg·m−2. At each time point, indoor air was sampled for 5–7 days and particulate matter (PM) with an aerodynamic size ≤2.5 μm (PM2.5) and 2.5–10 μm (PM2.5–10) was measured. Respiratory symptoms, health status, rescue medication use, exacerbations, blood biomarkers and exhaled nitric oxide were assessed simultaneously. Of the 84 participants enrolled, 56% were obese and all were former smokers with moderate-to-severe COPD. Obese participants tended to have less severe disease as assessed by Global Initiative for Chronic Obstructive Pulmonary Disease stage and fewer pack-years of smoking. There was evidence that obesity modified the effects of indoor PM on COPD respiratory outcomes. Increases in PM2.5 and PM2.5–10 were associated with greater increases in nocturnal symptoms, dyspnoea and rescue medication use among obese versus non-obese participants. The impact of indoor PM on exacerbations, respiratory status and wheeze also tended to be greater among obese versus non-obese participants, as were differences in airway and systemic inflammatory responses to indoor PM. We found evidence that obesity was associated with exaggerated responses to indoor fine and coarse PM exposure among individuals with COPD. Obesity may increase susceptibility to adverse respiratory effects of indoor particulate matter exposure among those with COPD http://ow.ly/DYf6T