Abstract
Background: Cerebrospinal fluid (CSF) measures of tau and amyloid proteins have now been largely accepted to be a diagnostic tool to aid the clinical diagnosis of Alzheimer's disease (AD), but CSF is not routinely obtained in most clinical settings. There is a need, therefore, to uncover additional readily accessible peripheral biomarkers that will enable comprehensive detection of AD-specific proteins in blood and blood derivates.
Objectives: Blood platelets contain proteins found in neuronal cell lines, including tau protein. Since tau protein is a characteristic of AD-neuropathology, platelet tau protein may be closely related to the central nervous process occurring in neurodegeneration.
Method: Platelets from 25 AD and 26 control subjects were analysed for the microtubule-binding and C-terminal region, as well as two tau phosphorylation sites (Ser202/Thr205 and Thr181).
Results: Tau protein measures did not discriminate between AD and control individuals. However, subjects with MMSE 24-27 had elevated C-terminal end tau protein (p=0.049) compared to those with MMSE >27, whereas older AD subjects (>80 years) showed higher t-tau protein in comparison to younger AD (<80 years; p=0.009) and control (<80 years; p=0.011) participants.
Conclusions: These initial findings not only confirm that platelet tau protein can be measured, but also indicate that platelet tau measures merit further study as they may be useful in indicating early stages of cognitive impairment. Further studies on larger number of participants are needed to confirm our findings.
Keywords: Alzheimer's disease, blood, older adults, platelets, tau protein, neuropathology.
Current Alzheimer Research
Title:Platelet Tau Protein as a Potential Peripheral Biomarker in Alzheimer’s Disease: An Explorative Study
Volume: 15 Issue: 9
Author(s): Elizabeta B. Mukaetova-Ladinska*, Zeinab Abdell-All, Joana Andrade, Joaquim Alves da Silva, Irina Boksha, Gulnur Burbaeva, Raj N. Kalaria and John T.O`Brien
Affiliation:
- Institute of Neuroscience, Psychology and Behaviour, University of Leicester, Leicester, LE1 7RH,United Kingdom
Keywords: Alzheimer's disease, blood, older adults, platelets, tau protein, neuropathology.
Abstract: Background: Cerebrospinal fluid (CSF) measures of tau and amyloid proteins have now been largely accepted to be a diagnostic tool to aid the clinical diagnosis of Alzheimer's disease (AD), but CSF is not routinely obtained in most clinical settings. There is a need, therefore, to uncover additional readily accessible peripheral biomarkers that will enable comprehensive detection of AD-specific proteins in blood and blood derivates.
Objectives: Blood platelets contain proteins found in neuronal cell lines, including tau protein. Since tau protein is a characteristic of AD-neuropathology, platelet tau protein may be closely related to the central nervous process occurring in neurodegeneration.
Method: Platelets from 25 AD and 26 control subjects were analysed for the microtubule-binding and C-terminal region, as well as two tau phosphorylation sites (Ser202/Thr205 and Thr181).
Results: Tau protein measures did not discriminate between AD and control individuals. However, subjects with MMSE 24-27 had elevated C-terminal end tau protein (p=0.049) compared to those with MMSE >27, whereas older AD subjects (>80 years) showed higher t-tau protein in comparison to younger AD (<80 years; p=0.009) and control (<80 years; p=0.011) participants.
Conclusions: These initial findings not only confirm that platelet tau protein can be measured, but also indicate that platelet tau measures merit further study as they may be useful in indicating early stages of cognitive impairment. Further studies on larger number of participants are needed to confirm our findings.
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Cite this article as:
Mukaetova-Ladinska B. Elizabeta *, Abdell-All Zeinab , Andrade Joana , da Silva Alves Joaquim, Boksha Irina, Burbaeva Gulnur , Kalaria N. Raj and T.O`Brien John , Platelet Tau Protein as a Potential Peripheral Biomarker in Alzheimer’s Disease: An Explorative Study, Current Alzheimer Research 2018; 15 (9) . https://dx.doi.org/10.2174/1567205015666180404165915
DOI https://dx.doi.org/10.2174/1567205015666180404165915 |
Print ISSN 1567-2050 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5828 |
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