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Neuropathological spectrum ofα-synucleinopathies Koichi Wakabayashi 1 , Makoto Nishie 1 , Kunikazu Tanji 1 , Fumiaki Mori 1 , Hitoshi Takahashi 2 1Department of Neuropathology, Institute of Brain Science, Hirosaki University School of Medicine 2Department of Pathology, Brain Research Institute, Niigata University Keyword: αシヌクレイン , Lewy小体 , 多系統萎縮症 , タウ , グリア細胞 pp.385-397
Published Date 2004/6/10
DOI https://doi.org/10.11477/mf.1431100268
  • Abstract
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 α-Synucleinopathies comprise a diverse group of neurodegenerative disorders that share common abnormal inclusions containingα-synuclein in selected vulnerable neurons and glia. Primaryα-synucleinopathies include Parkinson's disease, dementia with Lewy bodies, multiple system atrophy, and neurodegeneration with brain iron accumulation type 1. Lewy bodies and/or intracytoplasmicα-synuclein aggregates also occur in various tauopathies(secondaryα-synucleinopathies);Neuronalα-synuclein inclusions are frequently found in the amygdala of patients with Alzheimer's disease, Down's syndrome with Alzheimer pathology, parkinsonism-dementia complex of Guam, diffuse neurofibrillary tangle with calcification, and neuroaxonal dystrophy with neurofibrillary alteration. Recently, it was demonstrated thatα-synuclein and tau can synergize the polymerization of each other. It seems likely that posttranslational modifications ofα-synuclein cause fibrillization ofα-synuclein. However, it is uncertain whether inclusion body formation is a pathological process leading to cell death or a cytoprotective reaction in response to neurodegeneration.


Copyright © 2004, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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