1
|
O’Sharkey K, Xu Y, Chavez T, Johnson M, Cabison J, Rosales M, Grubbs B, Toledo-Corral CM, Farzan SF, Bastain T, Breton CV, Habre R. In-utero personal exposure to PM 2.5 impacted by indoor and outdoor sources and birthweight in the MADRES cohort. Environ Adv 2022; 9:100257. [PMID: 36778968 PMCID: PMC9912940 DOI: 10.1016/j.envadv.2022.100257] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
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.
Collapse
Affiliation(s)
- 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
| |
Collapse
|