Cited by 121Parkinson's Disease Mechanisms and TreatmentsNuclear Receptors and SignalingNerve injury and regeneration

Triggering endogenous neuroprotective processes through exercise in models of dopamine deficiency

Zigmond, Michael J., Cameron, Judy L., Leak, Rehana K., Mirnics, Karoly, Russell, Vivienne A., Smeyne, Richard J., Smith, Amanda D.·2009·Parkinsonism & Related Disorders

Abstract

We are testing the hypothesis that exercise is neuroprotective in animal models of the dopamine (DA) deficiency in Parkinson's disease. Our studies include mice or rats provided access to a running wheel and subsequently treated with MPTP (mice) or 6-hydroxydopamine (rats) and monkeys provided access to a treadmill and subsequently treated with MPTP. Typically, the exercise occurs for 3 months prior to the toxin treatment and often for 1-2 months thereafter. Our findings indicate that exercise reduces the behavioral impairments elicited by the dopaminergic neurotoxins as well as the loss of DA neurons as assessed by PET imaging and biochemical or histochemical assessment of tissue samples. Our studies are focused on one of several possible explanations for the beneficial effects of exercise: an exercise-induced increase in the expression of neurotrophic factors, particularly GDNF. Our observations indicate that GDNF can reduce the vulnerability of DA neurons, in part due to the activation of key intracellular cascades. We also find that mild cellular stress itself can provide protection against more intensive stress, a form of preconditioning. We conclude that dopamine neurons have the capacity to respond to intracellular and extracellular signals by triggering endogenous neuroprotective mechanisms. This raises the possibility that some individuals with Parkinson's disease suffer from a reduction of these neuroprotective mechanisms, and that treatments that boost these mechanisms - including exercise - may provide therapeutic benefit.

Integrity signals

Registry

Crossref · 10.1016/s1353-8020(09)70778-3

Cites

47 of 47 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Exercise-induced myokines influence cell survival, neurogenesis, neuroinflammation, protein homoeostasis, oxidative stress, and protein modification.

    “exercise-induced myokines that influence cell survival, neurogenesis, neuroinflammation, protein homoeostasis, oxidative stress, and protein modification.502,503”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Zigmond, M. J., Cameron, J. L., Leak, R. K., Mirnics, K., Russell, V. A., Smeyne, R. J., & Smith, A. D.
Affiliations
  • University of Pittsburgh (US)
  • University of Cape Town (ZA)
  • St. Jude Children's Research Hospital (US)
Corresponding author
Zigmond, Michael J.
Venue
Parkinsonism & Related Disorders
Publisher
Elsevier BV
Published
2009-12
Volume
15
Pages
S42-S45
ISSN
1353-8020 (ISSN-L)
OpenAlex
W2164459320
Cited by
121
References
47
Citations by year
2026: 1 · 2025: 8 · 2024: 5 · 2023: 2 · 2022: 7 · 2021: 5 · 2020: 10 · 2019: 8 · 2018: 4 · 2017: 4 · 2016: 6 · 2015: 7 · 2014: 8 · 2013: 18 · 2012: 13
FWCI
5.96
Type
journal article
Language
en
Open access
closed
Locations
  • Parkinsonism & Related Disorders (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Army
  • U.S. Public Health Service (TW008040, DA018087, MH067234, NS053471, NS45698, NS045906, AG021494, NS19608)
  • National Parkinson Foundation
  • American Parkinson's Disease Foundation
  • Michael J. Fox Foundation for Parkinson's Research
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
physical activity, neuroprotection
MeSH terms
Animals, Disease Models, Animal, Dopamine, Humans, Neurons, Parkinson Disease, Secondary, Physical Conditioning, Animal, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Oxidopamine, Glial Cell Line-Derived Neurotrophic Factor, Mice, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review