ArticleToxicological sciences : an official journal of the Society of Toxicology2012
Subchronic polychlorinated biphenyl (Aroclor 1254) exposure produces oxidative damage and neuronal death of ventral midbrain dopaminergic systems.
Article in Toxicological sciences : an official journal of the Society of Toxicology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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Who cites it
33 citing papers in PubMed, 57 citations in OpenAlex.
- The microbiota at the interface of environmental toxicants and the brain.Cell metabolism · 2026Review
- Environmental hazards and climate change: Unmasking Parkinson's hidden enemies.Journal of Parkinson's disease · 2026Review
- Curcumin Attenuates Aroclor 1254-Induced Oxidative, Genotoxic, and Apoptotic Alterations in HepG2 Cells.Journal of biochemical and molecular toxicology · 2026Article
- Article
- Polychlorinated Biphenyls, Oxidative Stress, and Brain Health: Mechanistic Links to Neurodegenerative and Neurodevelopmental Diseases.Antioxidants (Basel, Switzerland) · 2026Review
- A Scoping Review of Neurotoxic and Behavioral Outcomes Following Polychlorinated Biphenyl (PCB) Exposure in Post-Weaned Rodents.International journal of molecular sciences · 2025Article
- Prenatal exposure to persistent organic pollutants and emotional and behavioral outcomes from early childhood to adolescence: Rhea Cohort Study in Crete, Greece.Environmental epidemiology (Philadelphia, Pa.) · 2025Article
- Cognitive effects of early life exposure to PCBs in rats: Sex-specific behavioral, hormonal and neuromolecular mechanisms involving the brain dopamine system.Hormones and behavior · 2025Article
- Microglial responses to inflammatory challenge in adult rats altered by developmental exposure to polychlorinated biphenyls in a sex-specific manner.Neurotoxicology · 2024Article
- D-ribose-L-cysteine exhibits restorative neurobehavioral functions through modulation of neurochemical activities and inhibition oxido-inflammatory perturbations in rats exposed to polychlorinated biphenyl.Naunyn-Schmiedeberg's archives of pharmacology · 2024Article
- Disposition and metabolomic effects of 2,2',5,5'-tetrachlorobiphenyl in female rats following intraperitoneal exposure.Environmental toxicology and pharmacology · 2023Article
- Disposition and Metabolomic Effects of 2,2',5,5'-Tetrachlorobiphenyl in Female Rats Following Intraperitoneal Exposure.bioRxiv : the preprint server for biology · 2023Article
- Developmental Exposure to Polychlorinated Biphenyls Prevents Recovery from Noise-Induced Hearing Loss and Disrupts the Functional Organization of the Inferior Colliculus.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
- Developmental exposure to polychlorinated biphenyls prevents recovery from noise-induced hearing loss and disrupts the functional organization of the inferior colliculus.bioRxiv : the preprint server for biology · 2023Article
- Polychlorinated biphenyls induce oxidative stress and metabolic responses in astrocytes.Neurotoxicology · 2021Article
- Exposure to human relevant mixtures of halogenated persistent organic pollutants (POPs) alters neurodevelopmental processes in human neural stem cells undergoing differentiation.Reproductive toxicology (Elmsford, N.Y.) · 2021Article
- Neurotoxicity of polychlorinated biphenyls and related organohalogens.Acta neuropathologica · 2019Review
- 3,3'-Dichlorobiphenyl (PCB 11) promotes dendritic arborization in primary rat cortical neurons via a CREB-dependent mechanism.Archives of toxicology · 2018Article
- Ahr and Cyp1a2 genotypes both affect susceptibility to motor deficits following gestational and lactational exposure to polychlorinated biphenyls.Neurotoxicology · 2018Article
- Genetic differences in the aryl hydrocarbon receptor and CYP1A2 affect sensitivity to developmental polychlorinated biphenyl exposure in mice: relevance to studies of human neurological disorders.Mammalian genome : official journal of the International Mammalian Genome Society · 2018Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
Recent epidemiologic studies have demonstrated a link between organochlorine and pesticide exposure to an enhanced risk for neurodegenerative disorders such as Parkinson's disease (PD). A common biological phenomenon underlying cell injury associated with both polychlorinated biphenyl (PCB) exposure and dopaminergic neurodegeneration during aging is oxidative stress (OS). In this study, we tested the hypothesis that oral PCB exposure, via food ingestion, impairs dopamine systems in the adult murine brain. We determined whether PCB exposure was associated with OS in dopaminergic neurons, a population of cells that selectively degenerate in PD. After 4 weeks of oral exposure to the PCB mixture Aroclor 1254, several congeners, mostly ortho substituted, accumulated throughout the brain. Significant increases in locomotor activity were observed within 2 weeks, which persisted after cessation of PCB exposure. Stereologic analyses revealed a significant loss of dopaminergic neurons within the substantia nigra and ventral tegmental area. However, striatal dopamine levels were elevated, suggesting that compensatory mechanisms exist to maintain dopamine homeostasis, which could contribute to the observed increases in locomotor activity following PCB exposure. Biochemical experiments revealed alterations in OS markers, including increases in SOD and HO-1 levels and the presence of oxidatively modified lipids and proteins. These findings were accompanied by elevated iron levels within the striatal and midbrain regions, perhaps due to the observed dysregulation of transferrin receptors and ferritin levels following PCB exposure. In this study, we suggest that both OS and the uncoupling of iron regulation contribute to dopamine neuron degeneration and hyperactivity following PCB exposure.
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