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The overlap between vascular disease and Alzheimer's disease - lessons from pathology

Lookup NU author(s): Professor Johannes Attems

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Abstract

© 2014 Attems and Jellinger.Recent epidemiological and clinico-pathological data indicate considerable overlap between cerebrovascular disease (CVD) and Alzheimer's disease (AD) and suggest additive or synergistic effects of both pathologies on cognitive decline. The most frequent vascular pathologies in the aging brain and in AD are cerebral amyloid angiopathy and small vessel disease. Up to 84% of aged subjects show morphological substrates of CVD in addition to AD pathology. AD brains with minor CVD, similar to pure vascular dementia, show subcortical vascular lesions in about two-thirds, while in mixed type dementia (AD plus vascular dementia), multiple larger infarcts are more frequent. Small infarcts in patients with full-blown AD have no impact on cognitive decline but are overwhelmed by the severity of Alzheimer pathology, while in early stages of AD, cerebrovascular lesions may influence and promote cognitive impairment, lowering the threshold for clinically overt dementia. Further studies are warranted to elucidate the many hitherto unanswered questions regarding the overlap between CVD and AD as well as the impact of both CVD and AD pathologies on the development and progression of dementia.

Publication metadata

Author(s): Attems J, Jellinger KA

Publication type: Article

Publication status: Published

Journal: BMC Medicine

Year: 2014

Volume: 12

Issue: 1

Online publication date: 11/11/2014

Acceptance date: 07/10/2014

Date deposited: 29/08/2017

ISSN (electronic): 1741-7015

Publisher: BioMed Central Ltd

URL: https://doi.org/10.1186/s12916-014-0206-2

DOI: 10.1186/s12916-014-0206-2

PubMed id: 25385447

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