Cited by 701Parkinson's Disease Mechanisms and TreatmentsNeuroinflammation and Neurodegeneration MechanismsNuclear Receptors and Signaling

Glial reactions in Parkinson's disease

McGeer, Patrick L., McGeer, Edith G.·2008·Movement Disorders

Abstract

Dopaminergic neurons of the substantia nigra are particularly vulnerable to oxidative and inflammatory attack. Such processes may play a crucial role in the etiology of Parkinson disease (PD). Since glia are the main generators of these processes, the possibility that PD may be caused by glial dysfunction needs to be considered. This review concentrates on glial reactions in PD. Reactive astrocytes and reactive microglia are abundant in the substantia nigra (SN) of PD cases indicating a robust inflammatory state. Glia normally serve neuroprotective roles but, given adverse stimulation, they may contribute to damaging chronic inflammation. Microglia, the phagocytes of brain, may be the main contributors since they can produce large numbers of superoxide anions and other neurotoxins. Their toxicity towards dopaminergic neurons has been demonstrated in tissue culture and various animal models of PD. The MPTP and α‐synuclein models are of particular interest. Years after exposure to MPTP, inflammation has been observed in the SN. This has established that an acute insult to the SN can result in a sustained local inflammation. The α‐synuclein model indicates that an endogenous protein can induce inflammation, and, when overexpressed, can lead to autosomal dominant PD. Less is known about the role of astrocytes than microglia, but they are known to secrete both inflammatory and anti‐inflammatory molecules and may play a role in modulating microglial activity. Oligodendrocytes do not seem to play a role in promoting inflammation although, like neurons, they may be damaged by inflammatory processes. Further research concerning glial reactions in PD may lead to disease‐modifying therapeutic approaches. © 2007 Movement Disorder Society

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Crossref · 10.1002/mds.21751

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  • Reactive M1 microglia are found several years after MPTP exposure in humans and non-human primates, indicating a long-lasting reactive microgliosis.

    “Remarkably, reactive M1 microglia were found several years after MPTP exposure in humans and non-human primates exposed to MPTP, indicating a long-lasting reactive microgliosis.”

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Authors
McGeer, P. L., & McGeer, E. G.
Affiliations
University of British Columbia (CA)
Corresponding author
McGeer, Patrick L.
Venue
Movement Disorders
Publisher
Wiley
Published
2007-11-28
Volume
23
Issue
4
Pages
474-483
ISSN
  • 0885-3185 (ISSN-L)
  • 1531-8257
OpenAlex
W2120412340
Cited by
701
References
106
Citations by year
2026: 9 · 2025: 23 · 2024: 20 · 2023: 20 · 2022: 36 · 2021: 26 · 2020: 39 · 2019: 22 · 2018: 42 · 2017: 34 · 2016: 48 · 2015: 39 · 2014: 58 · 2013: 40 · 2012: 63
FWCI
5.11
Type
journal article
Language
en
Open access
closed
Locations
  • Movement Disorders (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
Parkinson's disease, glial reaction, reactive astrocytes, reactive microglia, substantia nigra, dopaminergic neurons, neuroinflammation, oxidative stress, MPTP, alpha-synuclein, oligodendrocytes, neuroprotection, disease-modifying therapy
MeSH terms
Animals, Haplorhini, Anti-Inflammatory Agents, Non-Steroidal, Astrocytes, Brain, Dopamine, Female, HLA-DR Antigens, Humans, Immunohistochemistry, Inflammation, Male, Neurons, Neurotoxins, Parkinson Disease, Substantia Nigra, 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine, Microglia, Oxidative Stress, Intercellular Adhesion Molecule-1, alpha-Synuclein

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