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Amyloid plaques of Creutzfeldt-Jakob disease. Kohtaro HIKITA 1 , Tetsuyuki KITAMOTO 1 1Department of Neuropathology, Neurological Institute, Faculty of Medicine, Kyushu University pp.65-76
Published Date 1987/2/10
DOI https://doi.org/10.11477/mf.1431905863

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  • Abstract
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1) Morphological aspects

Amyloid plaques were experimentally produced in the brains of mice inoculated with human Creutzfeldt-Jakob disease (CJD) brain homogenate. Light-microscopically, these plaques were mostly round and oval and were surrounded by macrophages and astrocytes. Ultramicroscopically, amyloid plaques were present in the cytoplasm of macrophages or were surrounded by these cells. The macrophages had numerous Golgi apparatus, endoplasmic reticula(ER), ribosomes, polysomesandlysosomes with inoculated materials or degenerating products. The bundles of amyloid fibrilswere intermingled with the cytoplasm of macro-absent. Some bundles of amyloid fibrils projected from the Golgi apparatus or rough ER and were partly exposed to the extracellular spaces, but there were no amyloid fibrils in the lysosomes. These findings confirmed that amyloid fibrils in the brains of CJD infected mice were produced by macrophages. Ultramicroscopical observation of human CJD and Gerstmann-Strdussler-Scheinker disease also revealed close relationship between amyloid plaques and macrophage.


Copyright © 1987, 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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