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Published on: November 21, 2018
Effects of pyrethroids on brain development and behavior: Deltamethrin
Emily M Pitzer1, Michael T Williams2, Charles V Vorhees2
1Dept. of Pediatrics, University of Cincinnati College of Medicine, Division of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, United States of America; Environmental Protection Agency, Office of Research and Development, Research Triangle Park, NC 27709, United States of America.
Deltamethrin (DLM) exposure during development causes lasting neurotoxic effects in rodents, impacting behavior, cognition, and dopamine pathways. Further research is needed to understand the long-term mechanisms of these developmental neurotoxic effects.
Area of Science:
- Neuroscience
- Toxicology
- Environmental Health
Background:
- Deltamethrin (DLM) is a widely used pyrethroid pesticide with growing concerns regarding developmental neurotoxicity.
- Epidemiological studies link early pyrethroid exposure to neurobehavioral disorders, particularly in children.
Purpose of the Study:
- To review the central nervous system (CNS) effects of pyrethroids, focusing on Deltamethrin (DLM).
- To emphasize the behavioral and cognitive consequences of developmental DLM exposure.
Main Methods:
- Review of existing animal studies on the long-term effects of developmental Deltamethrin (DLM) exposure.
- Analysis of neurochemical and behavioral data from rodent models.
Main Results:
- Developmental exposure to Deltamethrin (DLM) results in persistent effects on locomotor activity, acoustic startle response, learning, and memory in rodents.
- Consistent neurochemical alterations include reduced dopamine transporter and dopamine D1 receptor levels.
- Evidence indicates Deltamethrin (DLM) is developmentally neurotoxic.
Conclusions:
- Early Deltamethrin (DLM) exposure induces lasting neurodevelopmental effects.
- More research is required to elucidate the precise mechanisms underlying these long-term neurotoxic impacts.
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