In-utero personal exposure to PM2.5 impacted by indoor and outdoor sources and birthweight in the MADRES cohort

Karl O'Sharkey; Yan Xu; Thomas Chavez; Mark Johnson; Jane Cabison; Marisela Rosales; Brendan Grubbs; Claudia M. Toledo-Corral; Shohreh F. Farzan; Theresa Bastain; Carrie V. Breton; Rima Habre

Environmental Advances (Oct 2022)

In-utero personal exposure to PM2.5 impacted by indoor and outdoor sources and birthweight in the MADRES cohort

Karl O'Sharkey,
Yan Xu,
Thomas Chavez,
Mark Johnson,
Jane Cabison,
Marisela Rosales,
Brendan Grubbs,
Claudia M. Toledo-Corral,
Shohreh F. Farzan,
Theresa Bastain,
Carrie V. Breton,
Rima Habre

Affiliations

Karl O'Sharkey: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Yan Xu: Spatial Sciences Institute, University of Southern California, Los Angeles, CA, United States
Thomas Chavez: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Mark Johnson: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Jane Cabison: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Marisela Rosales: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Brendan Grubbs: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Claudia M. Toledo-Corral: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States; Department of Health Sciences, California State University Northridge, Northridge, CA, United States
Shohreh F. Farzan: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Theresa Bastain: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Carrie V. Breton: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States
Rima Habre: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 2001 N Soto St Rm 102M, Los Angeles, CA 90089, United States; Spatial Sciences Institute, University of Southern California, Los Angeles, CA, United States; Corresponding author at: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, 1895 N Soto St, Los Angeles, CA 90089, United States.

Journal volume & issue: Vol. 9
p. 100257

Abstract

Read online

Background: In-utero exposure to outdoor particulate matter with aerodynamic diameter less than 2.5 µm (PM2.5) is linked with low birthweight. However, previous results are mixed, likely due to measurement error introduced by estimating personal exposure from ambient data. This study investigated the effect of total personal PM2.5 exposure on birthweight and whether it differed when it was more heavily impacted by sources of indoor vs outdoor origin in the MADRES cohort study. Methods: Personal PM2.5 exposure was measured in 205 pregnant women in the 3rd trimester using 48 h integrated, filter-based sampling. Linear regression was used to test the association between personal PM2.5 exposure and birthweight, adjusting for key covariates. Interactions of PM2.5 with variables representing indoor sources of PM2.5, home ventilation, or time spent indoors tested whether the effect of total PM2.5 on birthweight varied when it was more impacted by sources of indoor vs outdoor origin. Results: In a sample of largely Hispanic (81%) pregnant women, total personal PM2.5 was not significantly associated with birthweight (β = 38.6 per 1SD increase in PM2.5; 95% CI:-21.1, 98.2). This association however, differed by home type (single family home: 156.9 (26.9, 287.0), 2-4 attached units:-16.6 (-111.9, 78.7), 5+ units:-62.6 (-184.9, 59.6), missing: 145.4 (-4.1, 294.9), interaction p = 0.028) and by household air conditioner use (none of the time: -27.6 (-101.5, 46.3) vs. some of the time: 139.9 (42.9, 237.0), interaction p = 0.008). Additionally, the effect of personal PM2.5 on birthweight varied by time spent indoors (none or little of the time:-45.1 (-208.3, 118.1) vs. most or all of the time: 57.1 (-7.3, 121.6), interaction p = 0.255). Conclusions: While no significant association between total personal PM2.5 exposure and birthweight was found, there was evidence that multi-unit housing (vs. single-family homes), candle and/or incense smoke, and greater outdoor source contributions to personal PM2.5 were more strongly associated with lower birthweight.

Published in Environmental Advances

ISSN: 2666-7657 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Geography. Anthropology. Recreation: Environmental sciences
Website: https://www.journals.elsevier.com/environmental-advances

About the journal

Abstract

Keywords