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Published in: Alzheimer's Research & Therapy 3/2014

Open Access 01-06-2014 | Research

Levels of cerebrospinal fluid α-synuclein oligomers are increased in Parkinson’s disease with dementia and dementia with Lewy bodies compared to Alzheimer’s disease

Authors: Oskar Hansson, Sara Hall, Annika Öhrfelt, Henrik Zetterberg, Kaj Blennow, Lennart Minthon, Katarina Nägga, Elisabet Londos, Shiji Varghese, Nour K Majbour, Abdulmonem Al-Hayani, Omar MA El-Agnaf

Published in: Alzheimer's Research & Therapy | Issue 3/2014

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Abstract

Introduction

The objective was to study whether α-synuclein oligomers are altered in the cerebrospinal fluid (CSF) of patients with dementia, including Parkinson disease with dementia (PDD), dementia with Lewy bodies (DLB), and Alzheimer disease (AD), compared with age-matched controls.

Methods

In total, 247 CSF samples were assessed in this study, including 71 patients with DLB, 30 patients with PDD, 48 patients with AD, and 98 healthy age-matched controls. Both total and oligomeric α-synuclein levels were evaluated by using well-established immunoassays.

Results

The levels of α-synuclein oligomers in the CSF were increased in patients with PDD compared with the controls (P < 0.05), but not in patients with DLB compared with controls. Interestingly, the levels of α-synuclein oligomers in the CSF were also significantly higher in patients with PDD (P < 0.01) and DLB (P < 0.05) compared with patients with AD. The levels of CSF α-synuclein oligomers and the ratio of oligomeric/total-α-synuclein could distinguish DLB or PDD patients from AD patients, with areas under the curves (AUCs) of 0.64 and 0.75, respectively. In addition, total-α-synuclein alone could distinguish DLB or PDD patients from AD patients, with an AUC of 0.80.

Conclusions

The levels of α-synuclein oligomers were increased in the CSF from α-synucleinopathy patients with dementia compared with AD cases.
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Metadata
Title
Levels of cerebrospinal fluid α-synuclein oligomers are increased in Parkinson’s disease with dementia and dementia with Lewy bodies compared to Alzheimer’s disease
Authors
Oskar Hansson
Sara Hall
Annika Öhrfelt
Henrik Zetterberg
Kaj Blennow
Lennart Minthon
Katarina Nägga
Elisabet Londos
Shiji Varghese
Nour K Majbour
Abdulmonem Al-Hayani
Omar MA El-Agnaf
Publication date
01-06-2014
Publisher
BioMed Central
Published in
Alzheimer's Research & Therapy / Issue 3/2014
Electronic ISSN: 1758-9193
DOI
https://doi.org/10.1186/alzrt255

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