Abstract
Pesticides are unique environmental contaminants that are specifically introduced into the environment to control pests, often by killing them. Although pesticide application serves many important purposes, including protection against crop loss and against vector-borne diseases, there are significant concerns over the potential toxic effects of pesticides to non-target organisms, including humans. In many cases, the molecular target of a pesticide is shared by non-target species, leading to the potential for untoward effects. Here, we review the history of pesticide usage and the neurotoxicity of selected classes of pesticides, including insecticides, herbicides, and fungicides, to humans and experimental animals. Specific emphasis is given to linkages between exposure to pesticides and risk of neurological disease and dysfunction in humans coupled with mechanistic findings in humans and animal models. Finally, we discuss emerging techniques and strategies to improve translation from animal models to humans.
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Abbreviations
- 2,4-D:
-
2,4-Dichlorophenoxyacetic acid
- AChE:
-
Acetylcholinesterase
- AD:
-
Alzheimer’s disease
- AOP:
-
Adverse outcome pathway
- APOE:
-
Apolipoprotein E
- BBB:
-
Blood–brain barrier
- BHC:
-
Beta-hexachlorocyclohexane
- DDE:
-
Dichlorodiphenyldichloroethylene
- DDT:
-
Dichlorodiphenyltrichloroethane
- DUMBBELS:
-
Diarrhea, urination miosis/muscle weakness, broncorrhea, bradycardia, emesis, lacrimation, salivation/sweating
- EPA:
-
US Environmental Protection Agency
- FDA:
-
US Food and Drug Administration
- GSH:
-
Glutathione
- IL1β:
-
Interleukin-1β
- IL6:
-
Interleukin 6
- iNOS:
-
Inducible nitric oxide synthase
- iPSC:
-
Induced pluripotent stem cell
- MEA:
-
Microelectrode array
- MRI:
-
Magnetic resonance imaging
- MN-EBCD:
-
Manganese ethylene-bis-dithiocarbamate
- MN/ZN-EBCD:
-
Manganese/Zinc ethylene-bis-dithiocarbamate
- MPP+ :
-
1-Methyl-4-phylpyridinium
- MPTP:
-
1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine
- NOX2:
-
NADPH oxidase 2
- NSC:
-
Neural stem cell
- OP:
-
Organophosphate
- OPIDN:
-
Organophosphate-induced delayed neuropathy
- PD:
-
Parkinson’s disease
- PKC:
-
Protein kinase C
- SCG2:
-
Secretogranin II
- SOD:
-
Superoxide dismutase
- SNPc:
-
Substantia nigra pars compacta
- SLUD:
-
Salivation, lacrimation, urination, diarrhea
- TOCP:
-
Tri-ortho-cresyl phosphate
- TNFα:
-
Tumor necrosis factor alpha
- UPS:
-
Ubiquitin–proteasome system
- WHO:
-
World health organization
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Acknowledgements
JRR was supported by National Institutes of Health Grants R01ES021800, R01ES026057, U01NS108956, and U01NS079249. VF was supported by R15ES027998. AGK was supported by National Institutes of Health R01 Grants ES027245, NS088206, ES026892, and NS10090. The Eugene and Linda Lloyd Endowed Chair and Eminent Scholar and Armbrust Endowment support to AGK are also acknowledged. He also thanks Drs. Adhithiya Charlie, Huajun Jin, and Mr. Gary Zenitsky for their assistance in preparing this manuscript.
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Richardson, J.R., Fitsanakis, V., Westerink, R.H.S. et al. Neurotoxicity of pesticides. Acta Neuropathol 138, 343–362 (2019). https://doi.org/10.1007/s00401-019-02033-9
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DOI: https://doi.org/10.1007/s00401-019-02033-9