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Current Environmental Health Reports

, Volume 4, Issue 2, pp 156–165 | Cite as

Developmental Neurotoxicity of Traffic-Related Air Pollution: Focus on Autism

  • Lucio G. CostaEmail author
  • Yu-Chi Chang
  • Toby B. Cole
Mechanisms of Toxicity (JR Richardson, Section Editor)
Part of the following topical collections:
  1. Topical Collection on Mechanisms of Toxicity

Abstract

Purpose of Review

Epidemiological and animal studies suggest that air pollution may negatively affect the central nervous system (CNS) and contribute to CNS diseases. Traffic-related air pollution is a major contributor to global air pollution, and diesel exhaust (DE) is its most important component.

Recent Findings

Several studies suggest that young individuals may be particularly susceptible to air pollution-induced neurotoxicity and that perinatal exposure may cause or contribute to developmental disabilities and behavioral abnormalities. In particular, a number of recent studies have found associations between exposures to traffic-related air pollution and autism spectrum disorders (ASD), which are characterized by impairment in socialization and in communication and by the presence of repetitive and unusual behaviors. The cause(s) of ASD are unknown, and while it may have a hereditary component, environmental factors are increasingly suspected as playing a pivotal role in its etiology, particularly in genetically susceptible individuals.

Summary

Autistic children present higher levels of neuroinflammation and systemic inflammation, which are also hallmarks of exposure to traffic-related air pollution. Gene-environment interactions may play a relevant role in determining individual susceptibility to air pollution developmental neurotoxicity. Given the worldwide presence of elevated air pollution, studies on its effects and mechanisms on the developing brain, genetic susceptibility, role in neurodevelopmental disorders, and possible therapeutic interventions are certainly warranted.

Keywords

Traffic-related air pollution Diesel exhaust Neuroinflammation Autism spectrum disorders Reelin Gene-environment interactions 

Notes

Acknowledgements

Research by the authors is supported by grants from NIEHS (R01ES22949, P30ES07033, P42ES04696, T32ES07032) and NICHD (U54HD083091) and by funds from the Department of Environmental and Occupational Health Sciences, University of Washington.

Compliance with Ethics Guidelines

Conflict of Interest

The authors declare that they have no competing interests.

Human and Animal Rights and Informed Consent

This review article does not contain any studies with human or animal subjects performed by any of the authors. Studies with animals by the authors and reported elsewhere are referred to. These studies were approved by the Institutional Animal Review Board.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Lucio G. Costa
    • 1
    • 3
    Email author
  • Yu-Chi Chang
    • 1
  • Toby B. Cole
    • 1
    • 2
  1. 1.Department of Environmental and Occupational Health Sciences, School of Public HealthUniversity of WashingtonSeattleUSA
  2. 2.Center on Human Development and DisabilityUniversity of WashingtonSeattleUSA
  3. 3.Department of NeuroscienceUniversity of ParmaParmaItaly

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