Evidence map›Paper›PMID 23744073›Full record

ArticleThe Journal of biological chemistry2013

Castration induces Parkinson disease pathologies in young male mice via inducible nitric-oxide synthase.

Saurabh Khasnavis, Anamitra Ghosh, Avik Roy, Kalipada Pahan

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

25 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
  2. Article
  3. Benzoate Drugs for Traumatic Brain Injury.Journal of clinical & experimental immunology · 2026
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Androgens and Parkinson's Disease: A Review of Human Studies and Animal Models.Androgens: clinical research and therapeutics · 2021
    Review
  10. Article
  11. Androgen Therapy in Neurodegenerative Diseases.Journal of the Endocrine Society · 2020
    Review
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Translocator Protein Ligand Protects against Neurodegeneration in the MPTP Mouse Model of Parkinsonism.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  18. Article
  19. Review
  20. Article
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

4 authors at 1 institution in 1 country.

Saurabh KhasnavisFrom the Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612.
Anamitra GhoshFrom the Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612.
Avik RoyFrom the Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612.
Kalipada PahanFrom the Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612. Electronic address: kalipada_pahan@rush.edu.
Rush University Medical Center · US

Funding

NEMO-binding domain peptide in a monkey model of PDR21NS064564 · NINDS · RUSH UNIVERSITY MEDICAL CENTER · PI PAHAN, KALIPADA · 2010 to 2011
$410k
Castration of male mice: An unexpected way to model PD pathologiesR21NS071479 · NINDS · RUSH UNIVERSITY MEDICAL CENTER · PI PAHAN, KALIPADA · 2010 to 2011
$409k
NINDS NIH HHS NS64564NINDS NIH HHS NS71479NINDS NIH HHS R21 NS064564NINDS NIH HHS R21 NS071479
6 · The paper itself

Abstract

Although Parkinson disease (PD) is a progressive neurodegenerative disorder, available animal models do not exhibit irreversible neurodegeneration, and this is a major obstacle in finding out an effective drug against this disease. Here we delineate a new irreversible model to study PD pathogenesis. The model is based on simple castration of young male mice. Levels of inducible nitric-oxide synthase (iNOS), glial markers (glial fibrillary acidic protein and CD11b), and α-synuclein were higher in nigra of castrated male mice than normal male mice. On the other hand, after castration, the level of glial-derived neurotrophic factor (GDNF) markedly decreased in the nigra of male mice. Accordingly, castration also induced the loss of tyrosine hydroxylase-positive neurons in the nigra and decrease in tyrosine hydroxylase-positive fibers and neurotransmitters in the striatum. Reversal of nigrostriatal pathologies in castrated male mice by subcutaneous implantation of 5α-dihydrotestosterone pellets validates an important role of male sex hormone in castration-induced nigrostriatal pathology. Interestingly, castration was unable to cause glial activation, decrease nigral GDNF, augment the death of nigral dopaminergic neurons, induce the loss of striatal fibers, and impair neurotransmitters in iNOS(-/-) male mice. Furthermore, we demonstrate that iNOS-derived NO is responsible for decreased expression of GDNF in activated astrocytes. Together, our results suggest that castration induces nigrostriatal pathologies via iNOS-mediated decrease in GDNF. These results are important because castrated young male mice may be used as a simple, toxin-free, and nontransgenic animal model to study PD-related nigrostriatal pathologies, paving the way for easy drug screening against PD.

Indexed as

Agingalpha-SynucleinAnimalsAstrocytesCastrationDopamineDopaminergic NeuronsDown-RegulationGlial Cell Line-Derived Neurotrophic FactorHippocampusHormone Replacement TherapyInflammation MediatorsMaleMiceMice, Inbred C57BLMotor Activityalpha-SynucleinDopamineGlial Cell Line-Derived Neurotrophic FactorInflammation MediatorsNitric OxideNitric Oxide Synthase Type IINos2 protein, mouseTestosteroneTyrosine 3-MonooxygenaseCastrationMicrogliaNeurodegenerationNeuroinflammationNitric-oxide SynthaseParkinson Disease

Identifiers

PMID23744073
PMCPMC3774356
OpenAlexW2032960995

What OpenQuestion holds

Textmetadata
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.