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Sökning: WFRF:(Robins R. J.) > (2020-2022)

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  • Chong, Joyce R, et al. (författare)
  • Plasma P-tau181 to Aβ42 ratio is associated with brain amyloid burden and hippocampal atrophy in an Asian cohort of Alzheimer's disease patients with concomitant cerebrovascular disease.
  • 2021
  • Ingår i: Alzheimer's & dementia : the journal of the Alzheimer's Association. - : Wiley. - 1552-5279. ; 17:10, s. 1649-1662
  • Tidskriftsartikel (refereegranskat)abstract
    • There is increasing evidence that phosphorylated tau (P-tau181) is a specific biomarker for Alzheimer's disease (AD) pathology, but its potential utility in non-White patient cohorts and patients with concomitant cerebrovascular disease (CeVD) is unknown.Single molecule array (Simoa) measurements of plasma P-tau181, total tau, amyloid beta (Aβ)40 and Aβ42, as well as derived ratios were correlated with neuroimaging modalities indicating brain amyloid (Aβ+), hippocampal atrophy, and CeVD in a Singapore-based cohort of non-cognitively impaired (NCI; n=43), cognitively impaired no dementia (CIND; n=91), AD (n=44), and vascular dementia (VaD; n=22) subjects.P-tau181/Aβ42 ratio showed the highest area under the curve (AUC) for Aβ+ (AUC=0.889) and for discriminating between AD Aβ+ and VaD Aβ- subjects (AUC=0.903). In addition, P-tau181/Aβ42 ratio was associated with hippocampal atrophy. None of the biomarkers was associated with CeVD.Plasma P-tau181/Aβ42 ratio may be a noninvasive means of identifying AD with elevated brain amyloid in populations with concomitant CeVD.
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