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Human prenatal exposure to polychlorinated biphenyls (PCBs) and risk behaviors in adolescence
Stockholm University, Science for Life Laboratory (SciLifeLab). Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry.
Number of Authors: 32019 (English)In: Environment International, ISSN 0160-4120, E-ISSN 1873-6750, Vol. 129, p. 247-255Article in journal (Refereed) Published
Abstract [en]

Polychlorinated biphenyls (PCBs) are chemicals used in a variety of products before they were widely banned due to toxic effects in humans and wildlife. Because of continued persistence and ubiquity of these contaminants, risk of exposure to people living in industrialized countries is still high. Experimental research show that developmental exposure to PCB may alter function of brain pleasure centers and potentially influence disinhibitory behaviors, including tobacco and alcohol use. Yet, the potential effects of developmental PCB exposure on adolescent substance use have not been studied in humans. We used the Child Health and Development Studies (CHDS), a prospective birth cohort study in the Oakland and East Bay areas of California, to investigate associations between prenatal exposure to PCB congeners (66, 74, 99, 118, 138, 153, 170, 180, 187, and 203) and later disinhibitory behaviors in adolescents, specifically alcohol consumption and smoking, in a randomly selected sample (n = 554). Total prenatal PCB exposure was not associated with disinhibitory behaviors, among adolescents. However, the adjusted odds ratio (aOR) for being a current smoker, was higher in subjects within the third quartile of maternal PCB 66 exposure compared to those below the median (aOR = 1.93; 95% CI 1.05, 3.55). The aOR for drinking > 2 alcoholic beverages per week, were also higher for adolescents within the third (aOR = 1.46; 95% CI 0.86, 2.47) and fourth quartile of PCB 66 exposure (aOR = 1.39; 95% CI 0.83, 2.35), but the differences did not reach statistical significance. These results suggest that this specific PCB congener may play a role inducing neurodevelopmental alterations that could potentially increase the risk of becoming a long-term user of tobacco and possibly alcohol. There were no notable differences between magnitude or direction of effect between boys and girls. Future replicate analyses with larger longitudinal samples and animal experimental studies of potential underlying mechanisms are warranted.

Place, publisher, year, edition, pages
2019. Vol. 129, p. 247-255
Keywords [en]
Endocrine disrupting chemicals, Alcohol, Smoking, In utero, Polychlorinated biphenyls, Hormesis, Environmental contaminants
National Category
Occupational Health and Environmental Health
Identifiers
URN: urn:nbn:se:su:diva-170062DOI: 10.1016/j.envint.2019.04.051ISI: 000470239200025PubMedID: 31146159OAI: oai:DiVA.org:su-170062DiVA, id: diva2:1335157
Available from: 2019-07-04 Created: 2019-07-04 Last updated: 2019-07-04Bibliographically approved

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