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- W1565034934 abstract "This work was prompted by the finding that Aβ1-17 (Aβ17) appeared to be the second-most abundant cerebrospinal fluid (CSF) Aβ fragment, after Aβ40. We developed an ELISA to quantify levels of Aβ17 directly accessible in plasma (DA17), recovered from the proteomic plasma matrix (RP17) and associated with the cellular pellet (CP17) that remained after plasma collection. Then, we used a sample of 19 healthy control (HC), 27 mild cognitive impairment (MCI), and 17 mild Alzheimer's disease (AD) patients to explore the association of the diagnostic groups with those direct markers, their ratios or the ratios with their Aβ40 or Aβ42 counterparts. After dichotomization (d) for the median of the sample population, logistic regression analysis showed that in the AD versus HC subgroup, subjects with a dDA/CP17 higher than the median had a significantly greater risk of being AD than those with marker levels equal to or below the median (odds ratio OR; 95% confidence interval; 17.21; 1.42-208.81). Subjects with dRP17/42 below the median had an increased likelihood of being MCI (20.00; 1.17-333.33) or AD (40.00; 1.87-1000) versus being HC, than those with dRP17/42 higher than the median. Although the confidence intervals are wide, these findings suggest that assessment of Aβ17 may increase the diagnostic performance of blood-based Aβ tests which might be developed into minimally invasive first-step screening tests for people with increased risk for AD." @default.
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- W1565034934 date "2014-10-30" @default.
- W1565034934 modified "2023-10-16" @default.
- W1565034934 title "Aβ1-17 is a Major Amyloid-β Fragment Isoform in Cerebrospinal Fluid and Blood with Possible Diagnostic Value in Alzheimer's Disease" @default.
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- W1565034934 doi "https://doi.org/10.3233/jad-140156" @default.
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