| Review: Sporadic cerebral amyloid angiopathy. | |
| | |
MedLine Citation:
|
PMID: 20946241 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
J. Attems, K. Jellinger, D. R. Thal and W. Van Nostrand (2011) Neuropathology and Applied Neurobiology37, 75-93 Sporadic cerebral amyloid angiopathy Cerebral amyloid angiopathy (CAA) may result from focal to widespread amyloid-β protein (Aβ) deposition within leptomeningeal and intracortical cerebral blood vessels. In addition, pericapillary Aβ refers to Aβ depositions in the glia limitans and adjacent neuropil, whereas in capillary CAA Aβ depositions are present in the capillary wall. CAA may cause lobar intracerebral haemorrhages and microbleeds. Hypoperfusion and reduced vascular autoregulation due to CAA might cause infarcts and white matter lesions. CAA thus causes vascular lesions that potentially lead to (vascular) dementia and may further contribute to dementia by impeding the clearance of solutes out of the brain and transport of nutrients across the blood brain barrier. Severe CAA is an independent risk factor for cognitive decline. The clinical diagnosis of CAA is based on the assessment of associated cerebrovascular lesions. In addition, perivascular spaces in the white matter and reduced concentrations of both Aβ(40) and Aβ(42) in cerebrospinal fluid may prove to be suggestive for CAA. Transgenic mouse models that overexpress human Aβ precursor protein show parenchymal Aβ and CAA, thus corroborating the current concept of CAA pathogenesis: neuronal Aβ enters the perivascular drainage pathway and may accumulate in vessel walls due to increased amounts and/or decreased clearance of Aβ, respectively. We suggest that pericapillary Aβ represents early impairment of the perivascular drainage pathway while capillary CAA is associated with decreased transendothelial clearance of Aβ. CAA plays an important role in the multimorbid condition of the ageing brain but its contribution to neurodegeneration remains to be elucidated. |
| | |
Authors:
|
J Attems; K Jellinger; D R Thal; W Van Nostrand |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Neuropathology and applied neurobiology Volume: 37 ISSN: 1365-2990 ISO Abbreviation: Neuropathol. Appl. Neurobiol. Publication Date: 2011 Feb |
Date Detail:
|
Created Date: 2011-01-12 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7609829 Medline TA: Neuropathol Appl Neurobiol Country: England |
Other Details:
|
Languages: eng Pagination: 75-93 Citation Subset: IM |
Copyright Information:
|
© 2011 The Authors. Neuropathology and Applied Neurobiology © 2011 British Neuropathological Society. |
Affiliation:
|
Institute for Ageing and Health, Newcastle University, Newcastle upon Tyne, UK Institute for Clinical Neurobiology, Vienna, Austria Laboratory for Neuropathology, University of Ulm, Ulm, Germany Department of Neurosurgery, Stony Brook University, Stony Brook, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Etiology of chronic leg ulcers in 31,619 patients in Germany analyzed by an expert survey.
Next Document: Review: Molecular pathogenesis of blood-brain barrier breakdown in acute brain injury.