Combined CSF tau, p-tau181 and amyloid-β 38/40/42 for diagnosing Alzheimer’s disease
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Cerebrospinal fluid (CSF) concentrations of amyloid-beta (Abeta) 1-38, 1-40, 1-42, total-tau and phospho-tau in samples from 156 patients with Alzheimer's disease (AD) (n = 44), depressive cognitive complainers (DCC, n = 25) and various other forms of non-Alzheimer dementias (NAD, n = 87) were analyzed by electrochemiluminescence and enzyme linked immunosorbent assay, respectively. A significant decrease of CSF Abeta1-42 was the most powerful single marker for differentiation of AD from DCC, yielding accuracies of beyond 85%. Increased p-tau and the ratio Abeta1-42/Abeta1-38 yielded accuracies of beyond 80 and 85%, respectively, to discriminate AD versus NAD. Combining p-tau with Abeta1-42/Abeta1-38 resulted in a sensitivity of 94% for detection of AD and 85% specificity for excluding NAD. Decreased CSF Abeta1-42 represents a core biomarker for AD. The lack of specificity for exclusion of NAD can be most effectively compensated by the ratio Abeta1-42/Abeta1-38. The ratio Abeta1-42/Abeta1-38/p-tau powerfully discriminates AD versus NAD and fulfils the accuracy requirements for an applicable screening and differential diagnostic AD biomarker.
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CSF levels of Aβ38, Aβ42, and the Aβ42/Aβ38 ratio can distinguish AD from other dementias.
“In addition, it has been shown that the levels of Aβ38, Aβ42 and the Aβ42/Aβ38 ratio in cerebral spinal fluid (CSF) can be used to distinguish AD from other dementias [32–34].”
From Molecular and cellular mechanisms underlying the pathogenesis of Alzheimer’s disease (2020) · cites this paper as [32]
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- Authors
- Welge, V., Fiege, O., Lewczuk, P., Mollenhauer, B., Esselmann, H., Klafki, H.-W., Wolf, S., Trenkwalder, C., Otto, M., Kornhuber, J., Wiltfang, J., & Bibl, M.
- Affiliations
- University of Duisburg-Essen (DE)
- Friedrich-Alexander-Universität Erlangen-Nürnberg (DE)
- University of Göttingen (DE)
- Paracelsus Elena Klinik Kassel (DE)
- Universität Ulm (DE)
- Corresponding author
- Bibl, Mirko
- ORCID
- Venue
- Journal of Neural Transmission
- Published
- 2009-01-14
- Volume
- 116
- Issue
- 2
- Pages
- 203-212
- ISSN
- 0300-9564 (ISSN-L)
- 1435-1463
- OpenAlex
- W2041245991
- Cited by
- 152
- References
- 42
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 10 · 2023: 7 · 2022: 6 · 2021: 10 · 2020: 17 · 2019: 2 · 2018: 3 · 2017: 8 · 2016: 5 · 2015: 13 · 2014: 14 · 2013: 13 · 2012: 10
- FWCI
- 7.63
- Type
- journal article
- Language
- en
- Open access
- Licence
- Locations
- Journal of Neural Transmission (publishedVersion)
- PubMed (publishedVersion)
- GRO (submittedVersion, cc-by)
- Funders
- Baden-Württemberg Stiftung
- Bundesministerium für Bildung und Forschung
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
- Keywords
- Alzheimer's disease, cerebrospinal fluid biomarkers, amyloid-beta 42, phosphorylated tau, total tau, differential diagnosis of dementia, non-Alzheimer's dementia, diagnostic accuracy, screening biomarkers
- MeSH terms
- Aged, Alzheimer Disease, Enzyme-Linked Immunosorbent Assay, Female, Humans, Luminescent Measurements, Male, Middle Aged, Phosphorylation, ROC Curve, Biomarkers, Amyloid beta-Peptides, tau Proteins
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