Cited by 71Toxic Organic Pollutants ImpactEffects and risks of endocrine disrupting chemicalsAutism Spectrum Disorder Research

Influence of Low-Level Prenatal Exposure to PCDD/Fs and PCBs on Empathizing, Systemizing and Autistic Traits: Results from the Duisburg Birth Cohort Study

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Nowack, Nikola, Wittsiepe, Jürgen, Kasper-Sonnenberg, Monika, Wilhelm, Michael, Schölmerich, Axel·2015·PLOS ONE

Abstract

BACKGROUND: Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) are assumed to act as endocrine disruptor chemicals. Prenatal exposure to these pollutants might influence fetal steroid hormone levels, which are thought to be related to sex-typical development and autistic traits. OBJECTIVES: We examined associations of prenatal levels of PCDD/Fs and PCBs with autism traits and sex-typical behaviour in childhood. METHODS: We measured levels of PCDD/Fs and PCBs in maternal blood samples during pregnancy using gas chromatography/high-resolution mass spectrometry. Sex-typical behaviour was assessed at 9 years of age (n = 96) and autistic traits at 10 years of age using the Social Responsiveness Scale (SRS; n = 100). Multiple regression analyses were conducted to estimate the associations between prenatal exposure and outcome variables. RESULTS: Blood concentrations (WHO2005-TEq) of ƩPCDD/Fs ranged from 2.93-46.45 pg/g lipid base (median = 12.91 pg/g lipid base) and concentrations of ƩPCBs were in the range of 1.24-25.47 pg/g lipid base (median = 6.85 pg/g lipid base) which is within the range of German background exposure. We found significant negative associations between PCDD/F levels in maternal blood and SRS scores in the whole group (β = -6.66, p < .05), in girls (β = -10.98, p < .05) and, in one SRS subscale, in boys (β = -6.86, p < .05). For PCB levels, associations with one SRS subscale were significant for the whole study group as were associations with two subscales in girls. We did not find significant associations between PCDD/F or PCB levels and sex-typical behaviour for either sex. CONCLUSIONS: In an earlier part of this study, prenatal exposure to PCDD/Fs and PCBs was found to be associated with lower testosterone levels, therefore, our findings are consistent with the idea that autism spectrum conditions are related to fetal androgen levels. Several possible mechanisms, through which PCDD/Fs and PCBs might influence autistic behaviour, are discussed.

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  • The weight of evidence from epidemiological studies supports a negative association between developmental exposure to PCBs and neuropsychological function in infancy and childhood.

    “The weight of evidence from epidemiological studies supports a negative association between developmental exposure to PCBs and neuropsychological function in infancy and childhood [ 56 , 95–99 ].”

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Authors
Nowack, N., Wittsiepe, J., Kasper-Sonnenberg, M., Wilhelm, M., & Schölmerich, A.
Affiliations
Ruhr University Bochum (DE)
Corresponding author
Nowack, Nikola
Venue
PLOS ONE
Published
2015-06-12
Volume
10
Issue
6
Pages
e0129906
ISSN
1932-6203 (ISSN-L)
OpenAlex
W656997998
Cited by
71
References
120
Citations by year
2026: 2 · 2025: 2 · 2024: 4 · 2023: 4 · 2022: 5 · 2021: 8 · 2020: 8 · 2019: 6 · 2018: 12 · 2017: 14 · 2016: 6
FWCI
6.69
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Umweltbundesamt
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Toxic Organic Pollutants Impact
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
prenatal exposure, polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, polychlorinated biphenyls, autistic traits, empathizing-systemizing theory, endocrine disruptors, maternal blood, Social Responsiveness Scale
MeSH terms
Autism Spectrum Disorder, Polychlorinated Dibenzodioxins, Dibenzofurans, Polychlorinated, Adult, Benzofurans, Child, Environmental Pollutants, Female, Germany, Humans, Male, Polychlorinated Biphenyls, Pregnancy, Prenatal Exposure Delayed Effects

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