Cited by 90Neuroinflammation and Neurodegeneration MechanismsAlzheimer's disease research and treatmentsNeurological Disease Mechanisms and Treatments

Glia in neurodegeneration: Drivers of disease or along for the ride?

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Gleichman, Amy J., Carmichael, S. Thomas·2020·Neurobiology of Disease

Abstract

While much of the research on neurodegenerative diseases has focused on neurons, non-neuronal cells are also affected. The extent to which glia and other non-neuronal cells are causally involved in disease pathogenesis versus more passively responding to disease is an area of active research. This is complicated by the fact that there is rarely one known cause of neurodegenerative diseases; rather, these disorders likely involve feedback loops that perpetuate dysfunction. Here, we will review genetic as well as experimental evidence that suggest that non-neuronal cells are at least partially driving disease pathogenesis in numerous neurodegenerative disorders, including Alzheimer's disease, frontotemporal dementia, amyotrophic lateral sclerosis, Huntington's disease, multiple sclerosis, and Parkinson's disease.

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Crossref · 10.1016/j.nbd.2020.104957

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  • Non-cell autonomous mechanisms can cause dysfunction across the entire substantia nigra pars compacta, leading to rapid dopaminergic neurodegeneration, in contrast to neuron-specific cell autonomous mechanisms.

    “in contrast to neuron-specific cell autonomous mechanisms that affect individual DA neurons within the SNc, non-cell autonomous mechanisms can cause dysfunction across the entire SNc, thereby leading to rapid DA neurodegeneration”

    From Mitochondrial DNA Damage in Substantia Nigra Pars Compacta Astrocytes Exacerbates Dopaminergic Neuron Loss in a 6-Hydroxydopamine Mouse Model of Parkinsonism (2026) · cites this paper as Gleichman and Carmichael 2020

    Section 3.5 (Parkinson’s disease; page not provided) discusses glial involvement in neurodegeneration and suggests that microglial reactivity may drive PD pathogenesis. It does not say that non-cell-autonomous mechanisms cause dysfunction across the entire substantia nigra pars compacta or rapid dopaminergic neurodegeneration, nor does it make the stated comparison with neuron-specific mechanisms. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • In neurodegenerative diseases, microglial activation may accentuate neuron loss by promoting and propagating regional and local neuroinflammation.

    “In neurodegenerative diseases, microglial activation may accentuate neuron loss by promoting and propagating regional and local neuroinflammation [420,421].”

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Authors
Gleichman, A. J., & Carmichael, S. T.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Gleichman, Amy J.
Venue
Neurobiology of Disease
Publisher
Elsevier BV
Published
2020-08
Volume
142
Pages
104957
ISSN
0969-9961 (ISSN-L)
OpenAlex
W3033978592
Cited by
90
References
127
Citations by year
2026: 5 · 2025: 19 · 2024: 13 · 2023: 19 · 2022: 14 · 2021: 12 · 2020: 8
FWCI
1.32
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Disease (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • Dr. Miriam and Sheldon G. Adelson Medical Research Foundation
  • American Federation for Aging Research
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neurological Disease Mechanisms and Treatments
Keywords
glia, neurodegeneration, pathogenesis, non-neuronal cells, glial dysfunction, Alzheimer's disease, frontotemporal dementia, amyotrophic lateral sclerosis, Huntington's disease, multiple sclerosis, Parkinson's disease, feedback loops
MeSH terms
Animals, Astrocytes, Brain, Humans, Neuroglia, Neurons, Neurodegenerative Diseases

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