Cited by 136Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Markers of neuroinflammation associated with Alzheimer’s disease pathology in older adults

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Popp, Julius, Oikonomidi, Aikaterini, Tautvydaitė, Domilė, Dayon, Loïc, Bacher, Michael, Migliavacca, Eugenia, Henry, Hugues, Kirkland, Richard +3 more·2017·Brain, Behavior, and Immunity

Abstract

Background In vitro and animal studies have linked neuroinflammation to Alzheimer's disease (AD) pathology. Studies on markers of inflammation in subjects with mild cognitive impairment or AD dementia provided inconsistent results. We hypothesized that distinct blood and cerebrospinal fluid (CSF) inflammatory markers are associated with biomarkers of amyloid and tau pathology in older adults without cognitive impairment or with beginning cognitive decline.Objective To identify blood-based and CSF neuroinflammation marker signatures associated with AD pathology (i.e. an AD CSF biomarker profile) and to investigate associations of inflammation markers with CSF biomarkers of amyloid, tau pathology, and neuronal injury.Design/methods Cross-sectional analysis was performed on data from 120 older community-dwelling adults with normal cognition (n=48) or with cognitive impairment (n=72). CSF Aβ1-42, tau and p-tau181, and a panel of 37 neuroinflammatory markers in both CSF and serum were quantified. Least absolute shrinkage and selection operator (LASSO) regression was applied to determine a reference model that best predicts an AD CSF biomarker profile defined a priori as p-tau181/Aβ1-42 ratio >0.0779. It was then compared to a second model that included the inflammatory markers from either serum or CSF. In addition, the correlations between inflammatory markers and CSF Aβ1-42, tau and p-tau181 levels were assessed.Results Forty-two subjects met criteria for having an AD CSF biomarker profile. The best predictive models included 8 serum or 3 CSF neuroinflammatory markers related to cytokine mediated inflammation, vascular injury, and angiogenesis. Both models improved the accuracy to predict an AD biomarker profile when compared to the reference model. In analyses separately performed in the subgroup of participants with cognitive impairment, adding the serum or the CSF neuroinflammation markers also improved the accuracy of the diagnosis of AD pathology. None of the inflammatory markers correlated with the CSF Aβ1-42 levels. Six CSF markers (IL-15, MCP-1, VEGFR-1, sICAM1, sVCAM-1, and VEGF-D) correlated with the CSF tau and p-tau181 levels, and these associations remained significant after controlling for age, sex, cognitive impairment, and APOEε4 status.Conclusions The identified serum and CSF neuroinflammation biomarker signatures improve the accuracy of classification for AD pathology in older adults. Our results suggest that inflammation, vascular injury, and angiogenesis as reflected by CSF markers are closely related to cerebral tau pathology.

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Crossref · 10.1016/j.bbi.2017.01.020

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  • These findings are in keeping with a recent report demonstrating that serum and CSF neuroinflammation biomarker signatures that included ICAM-1, VCAM-1, IL-15, and Flt-1 could identify individuals who had AD CSF profile (abnormal p-tau/Aβ42 ratio) in a group of patients with MCI.

    “These findings are in keeping with a recent report demonstrating that serum and CSF neuroinflammation biomarker signatures that included ICAM-1, VCAM-1, IL-15, and Flt-1 could identify individuals who had AD CSF profile (abnormal p-tau/Aβ42 ratio) in a group of patients with MCI.43”
  • Neuroinflammation markers in the CSF are strongly associated with cerebral tau pathology in older adults.

    “Indeed, neuroinflammation markers in the CSF are strongly associated with cerebral tau pathology in older adults [127].”

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Authors
Popp, J., Oikonomidi, A., Tautvydaitė, D., Dayon, L., Bacher, M., Migliavacca, E., Henry, H., Kirkland, R., Severin, I., Wojcik, J., & Bowman, G. L.
Affiliations
  • Centre Hospitalier Universitaire Vaudois (CH)
  • Philipps University of Marburg (DE)
  • École Polytechnique Fédérale de Lausanne (CH)
  • Prometheus Biosciences (United States) (US)
Corresponding author
Popp, Julius
Venue
Brain, Behavior, and Immunity
Publisher
Elsevier BV
Published
2017-05
Volume
62
Pages
203-211
ISSN
0889-1591 (ISSN-L)
OpenAlex
W2585474145
Cited by
136
References
66
Citations by year
2026: 8 · 2025: 12 · 2024: 15 · 2023: 9 · 2022: 24 · 2021: 17 · 2020: 20 · 2019: 8 · 2018: 14 · 2017: 8
FWCI
11.29
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior and Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • Archive ouverte UNIGE (University of Geneva) (publishedVersion)
  • SERVAL (Université de Lausanne) (acceptedVersion, other-oa)
  • IRIS (submittedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Funders
  • Swiss National Research Foundation (320030_141179)
  • Deutsche Forschungsgemeinschaft (BA 1869/3-1)
  • Nestlé Institute of Health Sciences
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 › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, neuroinflammation, cerebrospinal fluid biomarkers, serum inflammatory markers, amyloid-beta 42, tau protein, phosphorylated tau, cognitive impairment, early diagnosis, cytokines, angiogenesis, vascular injury, IL-15, MCP-1, VEGFR1
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Cognition, Encephalitis, Female, Humans, Male, Middle Aged, Neuropsychological Tests, Peptide Fragments, Biomarkers, Amyloid beta-Peptides, tau Proteins

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