Identification of microRNAs involved in Alzheimer's progression using a rabbit model of the disease

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TypeArticle
Journal titleAmerican Journal of Neurodegenerative Disease
ISSN2165-591X
Volume3
Issue1
Pages3344
Subjectangiopathy; amyloid; dementia; Delphi; validation; APOE; CAA; consensus; parenchymal; meningeal
AbstractIn a collaboration involving 11 groups with research interests in cerebral amyloid angiopathy (CAA), we used a two-stage process to develop and in turn validate a new consensus protocol and scoring scheme for the assessment of CAA and associated vasculopathic abnormalities in post-mortem brain tissue. Stage one used an iterative Delphi-style survey to develop the consensus protocol. The resultant scoring scheme was tested on a series of digital images and paraffin sections that were circulated blind to a number of scorers. The scoring scheme and choice of staining methods were refined by open-forum discussion. The agreed protocol scored parenchymal and meningeal CAA on a 0-3 scale, capillary CAA as present/absent and vasculopathy on 0-2 scale, in the 4 cortical lobes that were scored separately. A further assessment involving three centres was then undertaken. Neuropathologists in three centres (Bristol, Oxford and Sheffield) independently scored sections from 75 cases (25 from each centre) and high inter-rater reliability was demonstrated. Stage two used the results of the three-centre assessment to validate the protocol by investigating previously described associations between APOE genotype (previously determined), and both CAA and vasculopathy. Association of capillary CAA with or without arteriolar CAA with APOE ε4 was confirmed. However APOE ε2 was also found to be a strong risk factor for the development of CAA, not only in AD but also in elderly non-demented controls. Further validation of this protocol and scoring scheme is encouraged, to aid its wider adoption to facilitate collaborative and replication studies of CAA.
Publication date
Publishere-Century Publishing
LanguageEnglish
AffiliationNational Research Council Canada; Human Health Therapeutics
Peer reviewedYes
NPARC number23001339
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Record identifier42b12f5c-ac1d-4844-ba1b-7fa9811a23c6
Record created2017-01-20
Record modified2017-01-20
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