Journal article
Independent Maternal and Fetal Genetic Effects on Midgestational Circulating Levels of Environmental Pollutants
G3 : genes - genomes - genetics, v 7(4), pp 1287-1299
01 Apr 2017
PMID: 28235828
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Maternal exposure to environmental pollutants could affect fetal brain development and increase autism spectrum disorder (ASD) risk in conjunction with differential genetic susceptibility. Organohalogen congeners measured in maternal midpregnancy blood samples have recently shown significant, but negative associations with offspring ASD outcome. We report the first large-scale maternal and fetal genetic study of the midpregnancy serum levels of a set of 21 organohalogens in a subset of 790 genotyped women and 764 children collected in California by the Early Markers for Autism (EMA) Project. Levels of PCB (polychlorinated biphenyl) and PBDE (polybrominated diphenyl ether) congeners showed high maternal and fetal estimated SNP-based heritability (h(g)(2)) accounting for 39-99% of the total variance. Genome-wide association analyses identified significant maternal loci for p,p-DDE (P = 7.8 x 10(-11)) in the CYP2B6 gene and for BDE-28 (P = 3.2 x 10(-8)) near the SH3GL2 gene, both involved in xenobiotic and lipid metabolism. Fetal genetic loci contributed to the levels of BDE-100 (P = 4.6 x 10(-8)) and PCB187 (P = 2.8 x 10(-8)), near the potential metabolic genes LOXHD1 and PTPRD, previously implicated in neurodevelopment. Negative associations were observed for BDE-100, BDE153, and the sum of PBDEs with ASD, partly explained by genome-wide additive genetic effects that predicted PBDE levels. Our results support genetic control of midgestational biomarkers for environmental exposures by nonoverlapping maternal and fetal genetic determinants, suggesting that future studies of environmental risk factors should take genetic variation into consideration. The independent influence of fetal genetics supports previous hypotheses that fetal genotypes expressed in placenta can influence maternal physiology and the transplacental transfer of organohalogens.
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Details
- Title
- Independent Maternal and Fetal Genetic Effects on Midgestational Circulating Levels of Environmental Pollutants
- Creators
- Michela Traglia - University of California, San FranciscoLisa A. Croen - Kaiser PermanenteKristen Lyall - California Department of Public HealthGayle C. Windham - California Department of Public HealthMarty Kharrazi - California Department of Public HealthGerald N. DeLorenze - Kaiser PermanenteAnthony R. Torres - Utah State UniversityLauren A. Weiss - Univ Calif San Francisco, Dept Psychiat, Weill Inst Neurosci, San Francisco, CA 94143 USA
- Publication Details
- G3 : genes - genomes - genetics, v 7(4), pp 1287-1299
- Publisher
- Genetics Society America
- Number of pages
- 13
- Grant note
- R01 ES016669 / NIEHS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Environmental Health Sciences (NIEHS) International Mental Health Research Organization (IMHRO) R01ES016669 / NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Environmental Health Sciences (NIEHS)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- A.J. Drexel Autism Institute
- Web of Science ID
- WOS:000398840700022
- Scopus ID
- 2-s2.0-85017268467
- Other Identifier
- 991020100207104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Genetics & Heredity