ArticleThe American journal of pathology2023
The Parkinson-Associated Toxin Paraquat Shifts Physiological α-Synuclein Tetramers toward Monomers That Can Be Calpain-Truncated and Form Oligomers.
Article in The American journal of pathology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 12 citations in OpenAlex.
- Chronic Paraquat Neurotoxicity and Dopaminergic Degeneration: A Mechanistic Review.Chemistry & biodiversity · 2026Review
- From synaptic development to degeneration: a narrative review of small molecule strategies targeting alpha-synuclein in Parkinson's disease.Metabolic brain disease · 2026Review
- DYRK1A and Parkinson's disease, facts and hypotheses.Neurobiology of disease · 2026Review
- Incense Aerosol-Induced Neurotoxicity Disrupts α-Synuclein Homeostasis in a Cellular Parkinson's Disease Model, Distinct from Cigarette Aerosols.Chemical research in toxicology · 2026Article
- Parkinson's disease-specific α-Synuclein variants potentially drive Lewy body formation by engaging in promiscuous and non-functional interactions.Communications biology · 2026Article
- Review
- Parkinson disease-associated toxic exposures selectively up-regulate vesicular glutamate transporter vGlut2 in a model of human cortical neurons.Molecular biology of the cell · 2025Article
- Research Priorities on the Role of α-Synuclein in Parkinson's Disease Pathogenesis.Movement disorders : official journal of the Movement Disorder Society · 2024Review
- Aggregation-resistant alpha-synuclein tetramers are reduced in the blood of Parkinson's patients.EMBO molecular medicine · 2024Article
- Generation of G51D and 3D mice reveals decreased α-synuclein tetramer-monomer ratios promote Parkinson's disease phenotypes.NPJ Parkinson's disease · 2024Article
- LRP10 and α-synuclein transmission in Lewy body diseases.Cellular and molecular life sciences : CMLS · 2024Article
- Synucleinopathies: Intrinsic and Extrinsic Factors.Cell biochemistry and biophysics · 2023Article
Corrections and comments
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
Abstract
Abnormal aggregation of α-synuclein (αS) is thought to initiate neuronal dysfunction and death in Parkinson disease (PD). In addition to higher-molecular-weight, oligomeric, and polymeric forms of αS associated with neurotoxicity and disease, recent findings indicate the occurrence of physiological tetrameric assemblies in healthy neurons in culture and in brain. Herein, the PD-associated neurotoxin paraquat reduced physiological tetramers and led to calpain-truncated monomers and an approximately 70-kDa apparent oligomer different in size from physiological αS multimers. These truncated and oligomeric forms could also be generated by calpain cleavage of pure, recombinant human αS in vitro. Moreover, they were detected in the brains of tetramer-abrogating, E46K-amplified (3K) mice that model PD. These results indicate that paraquat triggers membrane damage and aberrant calpain activity that can induce a pathologic shift of tetramers toward an excess of full-length and truncated monomers, the accumulation of αS oligomers, and insoluble cytoplasmic αS puncta. The findings suggest that an environmental precipitant of PD can alter αS tetramer/monomer equilibrium, as already shown for several genetically caused forms of PD.
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