Cited by 44Neuroinflammation and Neurodegeneration MechanismsInflammasome and immune disordersParkinson's Disease Mechanisms and Treatments

NLRP3 Inflammasome-Related Proteins Are Upregulated in the Putamen of Patients With Multiple System Atrophy

Li, Fangzhou, Ayaki, Takashi, Maki, Takakuni, Sawamoto, Nobukatsu, Takahashi, Ryosuke·2018·Journal of Neuropathology & Experimental Neurology

Abstract

Multiple system atrophy (MSA) is a neurodegenerative disease characterized by parkinsonism, ataxia, and autonomic dysfunction. Microglial infiltration is an important mediator in MSA. The nucleotide-binding domain, leucine-rich repeats-containing family, pyrin domain-containing-3 (NLRP3) inflammasome complex, comprising NLRP3, apoptotic speck protein containing a caspase recruitment domain (ASC), and cysteine aspartic acid protease 1 (Caspase 1), regulates microglial inflammation in several neurodegenerative diseases. However, its role in MSA remains unknown. This study aimed to investigate the role of the NLRP3 inflammasome in MSA. Immunohistochemical staining of postmortem brains from 11 cases of MSA, 5 of Parkinson disease, and 6 age-matched controls were assessed. The relationships among α-synuclein deposition, microglial infiltration, and NLRP3 inflammasome-related proteins (NLRP3, ASC, and Caspase 1) were quantitatively analyzed. Double-labeling immunofluorescence staining confirmed colocalization of NLRP3 inflammasome-related proteins and Cluster of Differentiation 68. We demonstrated that the density of microglia expressing NLRP3 inflammasome-related proteins was increased in the putamina of MSA cases and was significantly related to the deposition of phosphorylated α-synuclein-positive glial cytoplasmic inclusions, tyrosine hydroxylase-positive fiber loss, and gliosis of glial fibrillary acidic protein-positive astrocytes. Our study suggests that the NLRP3 inflammasome is significantly upregulated and correlates with the neurodegenerative process in MSA.

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  1. Gerhard A, Banati RB, Goerres GB, et al. [11C](R)-PK11195 PET imag- ing of microglial activation in multiple system atrophy. Neurology 2003; 61:686-9
  2. Tan M-S, Yu J-T, Jiang T, et al. The NLRP3 inflammasome in Alz- heimer's disease. Mol Neurobiol 2013;48:875-82
  3. Balasingam V, Dickson K, Brade A, et al. Astrocyte reactivity in neona- tal mice: Apparent dependence on the presence of reactive microglia/ macrophages. Glia 1996;18:11-26

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Authors
Li, F., Ayaki, T., Maki, T., Sawamoto, N., & Takahashi, R.
Affiliations
  • Department of Neurology
  • Kyoto University (JP)
Corresponding author
Ayaki, Takashi
Venue
Journal of Neuropathology & Experimental Neurology
Published
2018-10-05
Volume
77
Issue
11
Pages
1055-1065
ISSN
  • 0022-3069 (ISSN-L)
  • 1554-6578
OpenAlex
W2894767767
Cited by
44
References
36
Citations by year
2026: 8 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 6 · 2021: 4 · 2020: 7 · 2019: 4
FWCI
1.68
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuropathology & Experimental Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • Kyoto University Research Information Repository (Kyoto University) (submittedVersion)
Funders
MEXT KAKENHI (JP16K18383)
Topics
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
multiple system atrophy, NLRP3 inflammasome, microglial infiltration, putamen, glial cytoplasmic inclusions, caspase-1, ASC, neuroinflammation, neurodegeneration, Parkinson's disease, gliosis
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Correlation of Data, Aged, Aged, 80 and over, Cells, Cultured, Female, Glial Fibrillary Acidic Protein, Humans, Male, Neuroglia, Parkinson Disease, Putamen, Tyrosine 3-Monooxygenase, Up-Regulation, Case-Control Studies, Cytokines, Multiple System Atrophy, Caspase 1, alpha-Synuclein, Inflammasomes

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