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Home > Assay of Plasma Phosphorylated Tau Protein (Threonine 181) and Total Tau Protein in Early-Stage Alzheimer's Disease.

TitleAssay of Plasma Phosphorylated Tau Protein (Threonine 181) and Total Tau Protein in Early-Stage Alzheimer's Disease.
Publication TypeJournal Article
Year of Publication2018
AuthorsYang, C-C, Chiu, M-J, Chen, T-F, Chang, H-L, Liu, B-H, Yang, S-Y
JournalJ Alzheimers Dis
Volume61
Issue4
Pagination1323-1332
Date Published2018
ISSN1875-8908
KeywordsAged, Aged, 80 and over, Alzheimer Disease, Amyloid beta-Peptides, Biomarkers, Case-Control Studies, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Neuropsychological Tests, Phosphorylation, tau Proteins
Abstract

The feasibility of assaying plasma phosphorylated tau protein (threonine 181), denoted p-tau181, using immunomagnetic reduction (IMR) is explored. The reagent for assaying p-tau181 with IMR was synthesized, and its analytic performances were characterized. Seventy-three subjects were recruited. Each participant was examined with neuropsychological tests, magnetic resonance imaging, and IMR assay for plasma p-tau181. Using commercially available IMR kits, the plasma total tau protein (T-tau) of each subject was assayed. The dynamic range for assaying p-tau181 using IMR was 1.96×10-2 pg/ml to 104 pg/ml. There was no significant interference from total tau protein in the assay of p-tau181. The measured concentrations of plasma p-tau181 were 2.46±1.09 pg/ml for healthy controls, 4.41±1.85 pg/ml for MCI due to AD, and 6.14±1.59 pg/ml for very mild AD. Meanwhile, the measured concentrations of plasma T-tau were 18.85±10.16 pg/ml for healthy controls, 32.98±10.18 pg/ml for MCI due to AD, and 37.54±12.29 pg/ml for very mild AD. A significant difference in plasma p-tau181 was observed between healthy controls and MCI due to AD (p 

DOI10.3233/JAD-170810
Alternate JournalJ. Alzheimers Dis.
PubMed ID29376870
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Source URL: https://www.j-alz.com/content/assay-plasma-phosphorylated-tau-protein-threonine-181-and-total-tau-protein-early-stage