Cited by 92Air Quality and Health ImpactsHealth, Environment, Cognitive AgingMetabolomics and Mass Spectrometry Studies

Maternal serum metabolome and traffic-related air pollution exposure in pregnancy

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Yan, Qi, Liew, Zeyan, Uppal, Karan, Cui, Xin, Ling, Chenxiao, Heck, Julia E., von Ehrenstein, Ondine S., Wu, Jun +3 more·2019·Environment International

Abstract

BACKGROUND: Maternal exposure to traffic-related air pollution during pregnancy has been shown to increase the risk of adverse birth outcomes and neurodevelopmental disorders. By utilizing high-resolution metabolomics (HRM), we investigated perturbations of the maternal serum metabolome in response to traffic-related air pollution to identify biological mechanisms. METHODS: We retrieved stored mid-pregnancy serum samples from 160 mothers who lived in the Central Valley of California known for high air particulate levels. We estimated prenatal traffic-related air pollution exposure (carbon monoxide, nitric oxides, and particulate matter <2.5 μm) during first-trimester using the California Line Source Dispersion Model, version 4 (CALINE4) based on residential addresses recorded at birth. We used liquid chromatography-high resolution mass spectrometry to obtain untargeted metabolic profiles and partial least squares discriminant analysis (PLS-DA) to select metabolic features associated with air pollution exposure. Pathway analyses were employed to identify biologic pathways related to air pollution exposure. As potential confounders we included maternal age, maternal race/ethnicity, and maternal education. RESULTS: In total we extracted 4038 and 4957 metabolic features from maternal serum samples in hydrophilic interaction (HILIC) chromatography (positive ion mode) and C18 (negative ion mode) columns, respectively. After controlling for confounding factors, PLS-DA (Variable Importance in Projection (VIP) ≥2) yielded 181 and 251 metabolic features (HILIC and C18, respectively) that discriminated between the high (n = 98) and low exposed (n = 62). Pathway enrichment analysis for discriminatory features associated with air pollution indicated that in maternal serum oxidative stress and inflammation related pathways were altered, including linoleate, leukotriene, and prostaglandin pathways. CONCLUSION: The metabolomic features and pathways we found to be associated with air pollution exposure suggest that maternal exposure during pregnancy induces oxidative stress and inflammation pathways previously implicated in pregnancy complications and adverse outcomes.

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  • The range of adverse health outcomes in children following early life fine and ultrafine PM exposure are understood to be caused through two broad mechanisms: directly crossing the placenta to reach fetal circulation, and/or indirectly through PM-driven maternal/placental oxidative stress, inflammation, epigenetic modifications in placental and offspring tissues, and potential endocrine disruption

    “The range of adverse health outcomes in children following early life fine and ultrafine PM exposure are understood to be caused through two broad mechanisms, (1) directly crossing the placenta, hence, reaching fetal circulation and/or (2) indirectly through an interplay of PM-driven maternal/placental oxidative stress, inflammation, epigenetic modifications in placental and offspring tissues, and”

    From Air pollution and children’s health—a review of adverse effects associated with prenatal exposure from fine to ultrafine particulate matter (2021) · cites this paper as [132]

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  • Maternal oxidative stress and inflammation-related pathways, including linoleate, leukotriene, and prostaglandin, were altered in response to traffic-related air pollution exposure.

    “Using a metabolomics approach, Yan et al. [132] observed maternal oxidative stress and inflammation-related pathways, including linoleate, leukotriene, and prostaglandin, were altered in response to traffic-related air pollution exposure.”

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  1. DellaPenna D, Mène-Saffrané L. 2011 Chapter 5 - vitamin e. In: Advances in botanical research, Vol. 59, (Rébeillé F, Douce R, eds): Academic Press, 179– 227.

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Authors
Yan, Q., Liew, Z., Uppal, K., Cui, X., Ling, C., Heck, J. E., von Ehrenstein, O. S., Wu, J., Walker, D. I., Jones, D. P., & Ritz, B.
Affiliations
  • University of California, Los Angeles (US)
  • Yale University (US)
  • Emory University (US)
  • Lucile Packard Children's Hospital (US)
  • University of California, Irvine (US)
  • Icahn School of Medicine at Mount Sinai (US)
Corresponding author
Ritz, Beate
Venue
Environment International
Publisher
Elsevier BV
Published
2019-09
Volume
130
Pages
104872
ISSN
0160-4120 (ISSN-L)
OpenAlex
W2950162098
Cited by
91
References
95
Citations by year
2026: 7 · 2025: 14 · 2024: 7 · 2023: 13 · 2022: 17 · 2021: 18 · 2020: 13 · 2019: 2
FWCI
5.36
Type
journal article
Language
en
Open access
Locations
  • Environment International (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
Funders
National Institute of Environmental Health Sciences (R21ES25573)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Air Quality and Health Impacts
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Health, Environment, Cognitive Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolomics and Mass Spectrometry Studies
Keywords
traffic-related air pollution, prenatal exposure, pregnancy, oxidative stress, inflammation, leukotriene pathway, prostaglandin pathway, particulate matter, carbon monoxide, nitric oxide, birth outcomes, Central Valley
MeSH terms
Traffic-Related Pollution, Adolescent, Adult, Air Pollutants, Air Pollution, Vehicle Emissions, California, Carbon Monoxide, Female, Humans, Maternal-Fetal Exchange, Nitrogen Oxides, Pregnancy, Maternal Exposure, Particulate Matter, Metabolomics, Metabolome, Young Adult

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