Cited by 179Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsCerebrospinal fluid and hydrocephalus

Cerebrospinal fluid neurogranin and YKL ‐40 as biomarkers of Alzheimer's disease

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Janelidze, Shorena, Hertze, Joakim, Zetterberg, Henrik, Landqvist Waldö, Maria, Santillo, Alexander, Blennow, Kaj, Hansson, Oskar·2016·Annals of Clinical and Translational Neurology

Abstract

OBJECTIVE: Widespread implementation of cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease (AD) in clinical settings requires improved accuracy for diagnosis of prodromal disease and for distinguishing AD from non-AD dementias. Novel and promising CSF biomarkers include neurogranin, a marker of synaptic degeneration, and YKL-40, a marker of neuroinflammation. METHODS: CSF neurogranin and YKL-40 were measured in a cohort of 338 individuals including cognitively healthy controls and patients with stable mild cognitive impairment (sMCI), MCI who later developed AD (MCI-AD), AD dementia, Parkinson's disease dementia (PDD), dementia with Lewy bodies (DLB), vascular dementia (VaD), and frontotemporal dementia (FTD). The diagnostic accuracy of neurogranin and YKL-40 were compared with the core AD biomarkers, β-amyloid (Aβ42 and Aβ40) and tau. RESULTS: Neurogranin levels were increased in AD and decreased in non-AD dementia compared with healthy controls. As a result, AD patients showed considerably higher CSF levels of neurogranin than DLB/PDD, VaD and FTD patients. CSF YKL-40 levels were increased in AD compared with DLB/PDD but not with VaD or FTD. Neither CSF neurogranin nor YKL-40 levels differed significantly between sMCI patients and MCI-AD patients. Both biomarkers correlated positively with CSF Aβ40 and tau. CSF neurogranin and YKL-40 could separate AD dementia from non-AD dementias (neurogranin, area under the curve [AUC] = 0.761; YKL-40, AUC = 0.604; Aβ42/neurogranin, AUC = 0.849; Aβ42/YKL-40, AUC = 0.785), but the diagnostic accuracy was not better compared to CSF Aβ and tau (Aβ42, AUC = 0.755; tau AUC = 0.858; Aβ42/tau, AUC = 0.895; Aβ42/Aβ40, AUC = 0.881). Similar results were obtained when separating sMCI from MCI-AD cases. INTERPRETATION: CSF neurogranin and YKL-40 do not improve the diagnostic accuracy of either prodromal AD or AD dementia when compared to the core CSF AD biomarkers. Nevertheless, the CSF level of neurogranin is selectively increased in AD dementia, whereas YKL-40 is increased in both AD and FTD suggesting that synaptic degeneration and glial activation may be important in these neurodegenerative conditions.

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Authors
Janelidze, S., Hertze, J., Zetterberg, H., Landqvist Waldö, M., Santillo, A., Blennow, K., & Hansson, O.
Affiliations
  • Lund University (SE)
  • National Hospital for Neurology and Neurosurgery (GB)
  • Memory Clinic Skåne University Hospital Malmö Sweden
  • University of Gothenburg (SE)
Corresponding author
  • Janelidze, Shorena
  • Hansson, Oskar
Venue
Annals of Clinical and Translational Neurology
Publisher
Wiley
Published
2015-11-20
Volume
3
Issue
1
Pages
12-20
ISSN
2328-9503 (ISSN-L)
OpenAlex
W2257675936
Cited by
179
References
47
Citations by year
2026: 7 · 2025: 17 · 2024: 11 · 2023: 13 · 2022: 20 · 2021: 17 · 2020: 21 · 2019: 20 · 2018: 22 · 2017: 24 · 2016: 7
FWCI
14.32
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)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
  • European Research Council
  • Vetenskapsrådet
  • Crafoordska Stiftelsen
  • Hjärnfonden
  • Torsten Söderbergs Stiftelse
  • Knut och Alice Wallenbergs Stiftelse
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
neurogranin, YKL-40, Alzheimer's disease, cerebrospinal fluid biomarkers, prodromal Alzheimer's disease, mild cognitive impairment, differential diagnosis of dementia, neuroinflammation, synaptic degeneration, amyloid-beta, tau protein, Parkinson's disease dementia, dementia with Lewy bodies, vascular dementia, frontotemporal dementia, diagnostic accuracy, combined biomarker detection

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