Cited by 79Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchCerebrospinal fluid and hydrocephalus

Tau oligomers in cerebrospinal fluid in Alzheimer's disease

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Sengupta, Urmi, Portelius, Erik, Hansson, Oskar, Farmer, Kathleen, Castillo‐Carranza, Diana, Woltjer, Randall, Zetterberg, Henrik, Galasko, Douglas +2 more·2017·Annals of Clinical and Translational Neurology

Abstract

Objective: With an increasing incidence of Alzheimer's disease (AD) and neurodegenerative tauopathies, there is an urgent need to develop reliable biomarkers for the diagnosis and monitoring of the disease, such as the recently discovered toxic tau oligomers. Here, we aimed to demonstrate the presence of tau oligomers in the cerebrospinal fluid (CSF) of patients with cognitive deficits, and to determine whether tau oligomers could serve as a potential biomarker for AD. Methods: A multicentric collaborative study involving a double‐blinded analysis with a total of 98 subjects with moderate to severe AD (N = 41), mild AD (N = 31), and nondemented control subjects (N = 26), and two pilot studies of 33 total patients with AD (N = 19) and control (N = 14) subjects were performed. We carried out biochemical assays to measure oligomeric tau from CSF of these patients with various degrees of cognitive impairment as well as cognitively normal controls. Results: Using a highly reproducible indirect ELISA method, we found elevated levels of tau oligomers in AD patients compared to age‐matched controls. Western blot analysis confirmed the presence of oligomeric forms of tau in CSF. In addition, the ratio of oligomeric to total tau increased in the order: moderate to severe AD, mild AD, and controls. Conclusion: These assays are suitable for the analysis of human CSF samples. These results here suggest that CSF tau oligomer measurements could be optimized and added to the panel of CSF biomarkers for the accurate and early detection of AD.

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Authors
Sengupta, U., Portelius, E., Hansson, O., Farmer, K., Castillo‐Carranza, D., Woltjer, R., Zetterberg, H., Galasko, D., Blennow, K., & Kayed, R.
Affiliations
  • The University of Texas Medical Branch at Galveston (US)
  • University of Gothenburg (SE)
  • Lund University (SE)
  • Oregon Health & Science University (US)
  • National Hospital for Neurology and Neurosurgery (GB)
  • University of California San Diego (US)
Corresponding author
Kayed, Rakez
Venue
Annals of Clinical and Translational Neurology
Publisher
Wiley
Published
2017-03
Volume
4
Issue
4
Pages
226-235
ISSN
2328-9503 (ISSN-L)
OpenAlex
W2594587078
Cited by
77
References
45
Citations by year
2026: 5 · 2025: 5 · 2024: 8 · 2023: 11 · 2022: 8 · 2021: 8 · 2020: 5 · 2019: 12 · 2018: 8 · 2017: 7
FWCI
6.47
Type
journal article
Language
en
Open access
Locations
  • Annals of Clinical and Translational Neurology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
Funders
National Institutes of Health (RO1AG054025)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
Keywords
tau oligomers, Alzheimer's disease, cerebrospinal fluid biomarkers, indirect ELISA, early detection of Alzheimer's disease, cognitive impairment, tauopathy

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