Aperçu: G.M.
Les
troubles du spectre de l'autisme (TSA) sont un ensemble de troubles
complexes du développement neurologique qui prévalent chez les enfants
et augmentent à un rythme soutenu ces dernières années. Cependant, l'étiologie de l'autisme est encore mal comprise. Les
humains ont un risque plus élevé d'exposition chimique que par le passé
en raison de l'utilisation croissante de produits chimiques dans divers
domaines, y compris la préservation des aliments, l'agriculture, la
production industrielle, etc. Un certain nombre d'agents
environnementaux ont été suggérés comme facteurs contribuant à la
pathogenèse des TSA ,
comprenant les métaux lourds (Hg et Pb), les polluants organiques
persistants (DDT, PBDE et PCB) et les produits chimiques émergents
préoccupants (phtalates et BPA).
Il
existe des preuves qui appuient le lien étiologique entre l'exposition
aux substances toxiques pour l'environnement et le développement du TSA. Les
enfants exposés à ces substances toxiques dans l'environnement
présentent des traits de signes de TSA et ont été signalés avec des charges corporelles élevées de ces produits chimiques et / ou de leurs
métabolites, ce qui peut expliquer la relation observée, mais des
preuves complètes chez l'homme sont limitées et nécessitent des recherches supplémentaires.
Environ Pollut. 2017 May 2;227:234-242. doi: 10.1016/j.envpol.2017.04.039.
The association of environmental toxicants and autism spectrum disorders in children
Author information
- 1
- Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China.
- 2
- Department of Biology, and Croucher Institute for Environmental Sciences, Hong Kong Baptist University, Kowloon Tong, Hong Kong.
- 3
- Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China; School of Environment, Jinan University, Guangzhou, China; Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University - Shenzhen Graduate School, Shenzhen, China. Electronic address: minghwong@eduhk.hk.
Abstract
Autism
spectrum disorders (ASDs) is a set of complex neurodevelopment
disorders that is prevalent in children and is increasing at a steady
rate in recent years. However, the etiology of autism is still poorly
understood. Humans are at higher risk of chemical exposure than in the
past as a result of the increasing usage of chemicals in various fields,
including food preservation, agriculture, industrial production, etc. A
number of environmental agents have been suggested as contributing
factors to ASD pathogenesis, which includes heavy metals (Hg and Pb),
persistent organic pollutants (DDT, PBDEs and PCBs) and emerging
chemicals of concern (phthalates and BPA). These three main categories
of toxicants could be the cause of ASD in children. Recent research into
the causes of ASD that have been linked to environment factors are
reviewed in this paper. There are evidence supporting the etiological
link between exposure to environmental toxicants and the development of
ASD. Children exposed to these toxicants in the environment exhibit
signature traits of ASD and have been reported with high body burdens of
these chemicals and/or their metabolites, which may provide an
explanation for the observed relation, yet comprehensive evidence in
humans is limited, highlighting the need for further research.
Copyright © 2017 Elsevier Ltd. All rights reserved.
- PMID: 28475976
- DOI: 10.1016/j.envpol.2017.04.039
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