Abstract
Previous reports suggest that brain white matter changes, a surrogate for small vessel disease, are related to cerebral amyloid angiopathy (CAA). However, this relationship has not been explored in population-based studies or in the oldest old (>85 years of age). We studied the relationships between white matter hyperintensities (WMH) determined by post-mortem magnetic resonance imaging (MRI) and neuropathologically assessed CAA in demented and nondemented subjects enrolled in the prospective community-based Finnish Vantaa 85+ Study. In this analysis, we evaluated scans and brain samples from 123 subjects (86% women) with a mean age of 90.6 years. We found CAA to be present in 63 % of the 123 subjects, whereas WMH was present in 74%, and dementia in 59 %. The presence of WMH of any severity did not relate to the presence or the degree of CAA severity, irrespective of the dementia status of the subjects. Furthermore, multivariate regression analysis showed a clear association between CAA and dementia but WMH was not related to dementia in this very old sample. We conclude that severe WMH may not be determined by CAA in this very elderly population.
Keywords: Cerebral amyloid angiopathy, magnetic resonance imaging, neuropathology, white matter hyperintensity.
Current Alzheimer Research
Title:Relationships Between White Matter Hyperintensities, Cerebral Amyloid Angiopathy and Dementia in a Population-based Sample of the Oldest Old
Volume: 10 Issue: 10
Author(s): M Tanskanen, RN Kalaria, I-L Notkola, M Mäkelä, T Polvikoski, L Myllykangas, R Sulkava, H Kalimo, A Paetau, P Scheltens, F Barkhof, van Straaten ECW and T Erkinjuntti
Affiliation:
Keywords: Cerebral amyloid angiopathy, magnetic resonance imaging, neuropathology, white matter hyperintensity.
Abstract: Previous reports suggest that brain white matter changes, a surrogate for small vessel disease, are related to cerebral amyloid angiopathy (CAA). However, this relationship has not been explored in population-based studies or in the oldest old (>85 years of age). We studied the relationships between white matter hyperintensities (WMH) determined by post-mortem magnetic resonance imaging (MRI) and neuropathologically assessed CAA in demented and nondemented subjects enrolled in the prospective community-based Finnish Vantaa 85+ Study. In this analysis, we evaluated scans and brain samples from 123 subjects (86% women) with a mean age of 90.6 years. We found CAA to be present in 63 % of the 123 subjects, whereas WMH was present in 74%, and dementia in 59 %. The presence of WMH of any severity did not relate to the presence or the degree of CAA severity, irrespective of the dementia status of the subjects. Furthermore, multivariate regression analysis showed a clear association between CAA and dementia but WMH was not related to dementia in this very old sample. We conclude that severe WMH may not be determined by CAA in this very elderly population.
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Tanskanen M, Kalaria RN, Notkola I-L, Mäkelä M, Polvikoski T, Myllykangas L, Sulkava R, Kalimo H, Paetau A, Scheltens P, Barkhof F, ECW Straaten van and Erkinjuntti T, Relationships Between White Matter Hyperintensities, Cerebral Amyloid Angiopathy and Dementia in a Population-based Sample of the Oldest Old, Current Alzheimer Research 2013; 10 (10) . https://dx.doi.org/10.2174/15672050113106660177
DOI https://dx.doi.org/10.2174/15672050113106660177 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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