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Cerebral amyloid angiopathy. Masanori TOMONAGA 1 1Department of Neuropathology, Institute of Brain Research, Faculty of Medicine, University of Tokyo pp.296-307
Published Date 1988/4/10
DOI https://doi.org/10.11477/mf.1431906187
  • Abstract
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 Cerebral amyloid angiopathy (CAA) is observed in the aged brain increasingly in its incidence in high age e.g. in 60% in age 90s. CAA appears inconstantly in relating with senile plaques. Recent biochemical analysis of vascular amyloid and plaque amyloid reveals that these amyloid consist of beta protein, which may be coded by an abnormal gene locating on the chromosome 21. On the other hand, Icelandic familial cerebral amyloid angiopathy (hereditary cerebral bleeding with amyloidosis) shows a deposition of abnormal gammatrace (cyctatin C) in the vascular wall.

 Some cases of CAA show massive cerebral bleeding (lobar type), not infrequently multiple, and in such cases various vascular changes are observed in the meningeal and cortical arterioles, such as hyalinosis, double barreled change, microaneurysm formation and fibrous occlusion. Rarely, granulomatous angiitis is also complicated. These changes cause multiple cortical infarctions in the same time. Among them, there are a few cases of diffuse white matter degeneration similar to Binswanger' disease.


Copyright © 1988, 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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