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Sökning: WFRF:(Gaya A. C. A.) > (2022)

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  • Mila-Aloma, M., et al. (författare)
  • Plasma p-tau231 and p-tau217 as state markers of amyloid-beta pathology in preclinical Alzheimer's disease
  • 2022
  • Ingår i: Nature Medicine. - : Springer Science and Business Media LLC. - 1078-8956 .- 1546-170X. ; 28, s. 1797-1801
  • Tidskriftsartikel (refereegranskat)abstract
    • A comprehensive comparison of Alzheimer's disease blood biomarkers in cognitively unimpaired individuals reveals that plasma p-tau231 and p-tau217 capture very early A beta changes, showing promise as markers to enrich a preclinical population for Alzheimer's disease clinical trials Blood biomarkers indicating elevated amyloid-beta (A beta) pathology in preclinical Alzheimer's disease are needed to facilitate the initial screening process of participants in disease-modifying trials. Previous biofluid data suggest that phosphorylated tau231 (p-tau231) could indicate incipient A beta pathology, but a comprehensive comparison with other putative blood biomarkers is lacking. In the ALFA+ cohort, all tested plasma biomarkers (p-tau181, p-tau217, p-tau231, GFAP, NfL and A beta 42/40) were significantly changed in preclinical Alzheimer's disease. However, plasma p-tau231 reached abnormal levels with the lowest A beta burden. Plasma p-tau231 and p-tau217 had the strongest association with A beta positron emission tomography (PET) retention in early accumulating regions and associated with longitudinal increases in A beta PET uptake in individuals without overt A beta pathology at baseline. In summary, plasma p-tau231 and p-tau217 better capture the earliest cerebral A beta changes, before overt A beta plaque pathology is present, and are promising blood biomarkers to enrich a preclinical population for Alzheimer's disease clinical trials.
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