Evidence map›Paper›PMID 19922440›Full record

ArticleJournal of neurochemistry2010

Trichloroethylene induces dopaminergic neurodegeneration in Fisher 344 rats.

Mei Liu, Dong-Young Choi, Randy L Hunter, Jignesh D Pandya, Wayne A Cass, Patrick G Sullivan, Hyoung-Chun Kim, Don M Gash, Guoying Bing

Open access · greenAbstract read
In one paragraph

Article in Journal of neurochemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 2 syntheses or guidelines pooled it, 111 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Environmental toxins in neurodegeneration - a narrative review.Neurological research and practice · 2025
    Review
  5. Article
  6. Environmental Risk Factors for Parkinson's Disease: A Critical Review and Policy Implications.Movement disorders : official journal of the Movement Disorder Society · 2025
    Review
  7. Parkinson's disease physiopathology-beyond theFrontiers in aging neuroscience · 2025
    Review
  8. Article
  9. Parkinson's Disease Progression and Exposure to Contaminated Water at Camp Lejeune.Movement disorders : official journal of the Movement Disorder Society · 2024
    Article
  10. Review
  11. Review
  12. Article
  13. DNA Damage and Parkinson's Disease.International journal of molecular sciences · 2024
    Review
  14. Review
  15. Article
  16. Article
  17. Low-dose inhalation exposure to trichloroethylene induces dopaminergic neurodegeneration in rodents.Toxicological sciences : an official journal of the Society of Toxicology · 2023
    Article
  18. Review
  19. Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Mei LiuDepartment of Anatomy and Neurobiology, College of Medicine, University of Kentucky, Lexington, KY 40536, USA.
Dong-Young Choi
Randy L Hunter
Jignesh D Pandya
Wayne A Cass
Patrick G Sullivan
Hyoung-Chun Kim
Don M Gash
Guoying Bing
University of Kentucky · USKangwon National University · KR

Funding

UK Spinal Cord &Brain Injury Research Center Core GrantP30NS051220 · NINDS · UNIVERSITY OF KENTUCKY · PI HALL, EDWARD D. · 2005 to 2015
$6.4M
NEUROCHEMICAL STUDIES OF THE AGING BASAL GANGLIAP01AG013494 · NIA · UNIVERSITY OF KENTUCKY · PI GASH, DON MARSHALL · 1997 to 2007
$5.5M
Cox-2 deficient mice are resistant to MPTP neurotoxicityR01NS044157 · NINDS · UNIVERSITY OF KENTUCKY · PI BING, GUOYING · 2003 to 2007
$1.3M
AGING AND 6 HYDROXYDOPAMINE NEUROTOXICITYR01AG017963 · NIA · UNIVERSITY OF KENTUCKY · PI CASS, WAYNE A · 2001 to 2005
$931k
NIA NIH HHS AG13494NIA NIH HHS AG17963NIA NIH HHS P01 AG013494NIA NIH HHS R01 AG017963NINDS NIH HHS NS044157NINDS NIH HHS P30 NS051220NINDS NIH HHS R01 NS044157
6 · The paper itself

Abstract

Trichloroethylene, a chlorinated solvent widely used as a degreasing agent, is a common environmental contaminant. Emerging evidence suggests that chronic exposure to trichloroethylene may contribute to the development of Parkinson's disease. The purpose of this study was to determine if selective loss of nigrostriatal dopaminergic neurons could be reproduced by systemic exposure of adult Fisher 344 rats to trichloroethylene. In our experiments, oral administration of trichloroethylene induced a significant loss of dopaminergic neurons in the substantia nigra pars compacta in a dose-dependent manner, whereas the number of both cholinergic and GABAergic neurons were not decreased in the striatum. There was a robust decline in striatal levels of 3, 4-dihydroxyphenylacetic acid without a significant depletion of striatal dopamine. Rats treated with trichloroethylene showed defects in rotarod behavior test. We also found a significantly reduced mitochondrial complex I activity with elevated oxidative stress markers and activated microglia in the nigral area. In addition, we observed intracellular alpha-synuclein accumulation in the dorsal motor nucleus of the vagus nerve, with some in nigral neurons, but little in neurons of cerebral cortex. Overall, our animal model exhibits some important features of Parkinsonism, and further supports that trichloroethylene may be an environmental risk factors for Parkinson's disease.

Indexed as

alpha-SynucleinAnimalsCaspase 3CD11b AntigenCholine O-AcetyltransferaseChromatography, High Pressure LiquidDisease Models, AnimalDopamineDopamine and cAMP-Regulated Phosphoprotein 32Dose-Response Relationship, DrugElectrochemistryEncephalitisGene Expression RegulationMaleMitochondriaNeurodegenerative Diseases3-nitrotyrosinealpha-SynucleinCaspase 3CD11b AntigenCholine O-AcetyltransferaseDopamineDopamine and cAMP-Regulated Phosphoprotein 32SolventsTrichloroethyleneTyrosineTyrosine 3-Monooxygenase

Identifiers

PMID19922440
PMCPMC3535262
OpenAlexW1989447981

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.