The neurotoxicity of pesticides: Implications for Parkinson's disease.
Level 5 - mechanism / opinion, no new human data
Narrative review of molecular mechanisms without systematic search methodology or original human data
PubMed 40203643 · doi:10.1016/j.chemosphere.2025.144348
What was done
This review summarized literature regarding the molecular mechanisms through which exposure to neurotoxic pesticides (such as rotenone, paraquat, maneb, and dieldrin) contributes to Parkinson's disease pathogenesis.
What was found
The abstract reports no experimental numbers, statistics, or effect estimates. It notes that approximately 85% of Parkinson's disease cases are sporadic, and describes qualitative mechanisms by which specific pesticides disrupt cellular pathways, including mitochondrial and proteasomal dysfunction, alpha-synuclein aggregation, autophagy dysregulation, and dopamine metabolism disruption.
Why it matters
The paper outlines the primary biological pathways connecting environmental toxin exposure to dopaminergic neurodegeneration in sporadic Parkinson's disease to highlight the need for preventive and regulatory measures.
Limits
As a narrative review, it presents mechanistic syntheses without systematic search protocols, meta-analytic pooling, or new epidemiological/clinical data. The effects of many environmental pesticides remain uncharacterized.
Cited by
- supports Paraquat is a mitochondrial toxin whose exposure is associated with an increased risk of Parkinson's disease.