Cited by 96Parkinson's Disease Mechanisms and TreatmentsNuclear Receptors and SignalingNeurological disorders and treatments

Exercise-Induced Neuroprotection and Recovery of Motor Function in Animal Models of Parkinson’s Disease

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Palasz, Ewelina, Niewiadomski, Wiktor, Gasiorowska, Anna, Wysocka, Adrianna, Stepniewska, Anna, Niewiadomska, Grazyna·2019·Frontiers in Neurology

Abstract

Parkinson's disease (PD) is manifested by progressive motor, autonomic, and cognitive disturbances. Dopamine (DA) synthesizing neurons in the substantia nigra (SN) degenerate, causing a decline in DA level in the striatum that leads to the characteristic movement disorders. A disease-modifying therapy to arrest PD progression remains unattainable with current pharmacotherapies, most of which cause severe side effects and lose their efficacy with time. For this reason, there is a need to seek new therapies supporting the pharmacological treatment of PD. Motor therapy is recommended for pharmacologically treated PD patients as it alleviates the symptoms. Molecular mechanisms behind the beneficial effects of motor therapy are unknown, nor is it known whether such therapy may be neuroprotective in PD patients. Due to obvious limitations, human studies are unlikely to answer these questions; therefore, the use of animal models of PD seems indispensable. Motor therapy in animal models of PD characterized by the loss of dopaminergic neurons has neuroprotective and neuroregenerative effects, and the completeness of neuronal protection may depend on (i) degree of neuronal loss, (ii) duration and intensity of exercise, and (iii) time elapsed between insult and commencing of training. As the physical activity is neuroprotective for dopaminergic neurons, the question arises what is the mechanism of this protective action. A current hypothesis assumes a central role of neurotrophic factors in the neuroprotection of dopaminergic neurons, even though it is still not clear whether increased DA level in the nigrostriatal axis results from neurogenesis of dopaminergic neurons in the SN, recovery of the phenotype of dopaminergic neurons, increased sprouting of the residual dopaminergic axons in the striatum, or generation of local striatal neurons from inhibitory interneurons. In the present review, we discuss studies describing the influence of physical exercise on the PD-like changes manifested in animal models of the disease and focus our interest on the current state of knowledge on the mechanism of neuroprotection induced by physical activity as a supportive therapy in PD.

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Crossref · 10.3389/fneur.2019.01143

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  • Our study revealed a recovery of the intensity of VMAT2 immunostaining in substantia nigra in exercised MPTP mice.

    “Furthermore, our study revealed a recovery of the intensity of vesicular monoamine transporter 2 (VMAT2) immunostaining in SN in exercised MPTP mice, indicative of the increase in the number of dopaminergic neurons [125].”
  • BDNF upregulation due to exercise was observed in midbrain, substantia nigra, striatum, hippocampus, and cortex.

    “BDNF upregulation was observed in midbrain [125], SN [126,128,129], ST [127,129,131,133], hippocampus [133], and cortex [132,133].”
  • The recovery of VMAT2 immunostaining in substantia nigra in exercised MPTP mice indicates an increase in the number of dopaminergic neurons.

    “Furthermore, our study revealed a recovery of the intensity of vesicular monoamine transporter 2 (VMAT2) immunostaining in SN in exercised MPTP mice, indicative of the increase in the number of dopaminergic neurons [125].”
  • In our study, higher BDNF and GDNF immunostaining intensity was noted in nigrostriatal areas of MPTP-treated mice which started treadmill training before and after intoxication, as compared to control groups both sedentary and exercised.

    “In our study, we also noted a higher BDNF and GDNF immunostaining intensity in nigrostriatal areas of MPTP-treated mice which started treadmill training before (preceding training) and after (follow-up training) intoxication, as compared to control groups both sedentary and exercised [125].”

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Authors
Palasz, E., Niewiadomski, W., Gasiorowska, A., Wysocka, A., Stepniewska, A., & Niewiadomska, G.
Affiliations
  • Mossakowski Medical Research Institute, Polish Academy of Sciences (PL)
  • Instytut Biologii Doświadczalnej im. Marcelego Nenckiego (PL)
Venue
Frontiers in Neurology
Published
2019-11-01
Volume
10
Pages
1143-1143
ISSN
1664-2295 (ISSN-L)
OpenAlex
W2983897971
Cited by
95
References
182
Citations by year
2026: 10 · 2025: 16 · 2024: 17 · 2023: 13 · 2022: 16 · 2021: 11 · 2020: 10 · 2017: 1
FWCI
1.24
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Neurology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
  • TauRx Pharmaceuticals
  • Instytut Biologii Doswiadczalnej im. M. Nenckiego PAN
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
Parkinson's disease, physical activity, neuroprotection, motor recovery, dopaminergic neurons, substantia nigra, neurotrophic factors, neurogenesis, Parkinson's disease model, exercise therapy

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