Cited by 791Neuroinflammation and Neurodegeneration MechanismsParkinson's Disease Mechanisms and TreatmentsNuclear Receptors and Signaling

Distribution of major histocompatibility complex class II-positive microglia and cytokine profile of Parkinson's disease brains

Imamura, Kazuhiro, Hishikawa, Nozomi, Sawada, Makoto, Nagatsu, Toshiharu, Yoshida, Mari, Hashizume, Yoshio·2003·Acta Neuropathologica

Abstract

There are numerous observations confirming that microglia expressing major histocompatibility complex (MHC) class II molecules are associated with the central nervous system (CNS) in aging and pathological conditions. In this study, we investigated the distribution of MHC class II-positive microglia in Parkinson's disease (PD) brains. The number of MHC class II-positive microglia in the substantia nigra (SN) and putamen increased as the neuronal degeneration of the SN proceeded. These cells were also ICAM-1 (CD54) and LFA-1 (CD11a) positive. The number of activated microglia not only in the SN and putamen but also in the hippocampus, transentorhinal cortex, cingulate cortex and temporal cortex in PD was significantly higher than that in the normal control. Most activated microglia persisted regardless of the presence or absence of Lewy bodies. They were frequently associated not only with alpha-synuclein-positive Lewy neurites, but also with TH-16-positive dopaminergic and WH-3-positive serotonergic neurites, as well as MAP-2- and SMI-32-positive neurites. These activated microglia were also positive for TNF-alpha and interleukin-6, which are known to have a neuroprotective function. We conclude that MHC class II-positive microglia are a sensitive index of neuropathological change and are actively associated with damaged neurons and neurites.

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Crossref · 10.1007/s00401-003-0766-2

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  • Microglial activation and recruitment (microgliosis) is accompanied by increased cytokine levels.

    “The microglial activation and recruitment (microgliosis) process is accompanied by increased cytokine levels.”
  • Reactive microglia characterized by amoeboid-shaped morphology are associated with α-syn pathology in the SN and hippocampus of PD patients.

    “Subsequent investigations of postmortem brain tissue from PD patients revealed that reactive microglia, characterized by amoeboid-shaped morphology, were associated with α-syn pathology in the SN and hippocampus.”

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Authors
Imamura, K., Hishikawa, N., Sawada, M., Nagatsu, T., Yoshida, M., & Hashizume, Y.
Affiliations
  • Okazaki City Hospital (JP)
  • Nagoya University (JP)
  • Fujita Health University (JP)
  • Aichi Medical University (JP)
Corresponding author
Imamura, Kazuhiro
Venue
Acta Neuropathologica
Published
2003-12-01
Volume
106
Issue
6
Pages
518-526
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2001176185
Cited by
791
References
54
Citations by year
2026: 35 · 2025: 49 · 2024: 70 · 2023: 49 · 2022: 76 · 2021: 56 · 2020: 62 · 2019: 46 · 2018: 34 · 2017: 36 · 2016: 30 · 2015: 35 · 2014: 37 · 2013: 26 · 2012: 29
FWCI
4.39
Type
journal article
Language
en
Open access
closed
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nuclear Receptors and Signaling
Keywords
Parkinson's disease, microglial activation, substantia nigra, putamen, ICAM-1, LFA-1, Lewy bodies, alpha-synuclein, TNF-α, interleukin-6, neuroinflammation, neuroprotection
MeSH terms
Aged, Aged, 80 and over, Brain, Female, Genes, MHC Class II, Humans, Immunohistochemistry, Male, Nerve Tissue Proteins, Parkinson Disease, Blotting, Western, Cytokines, Neurites, Microglia, Synucleins, alpha-Synuclein

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