Cited by 137Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsAdvanced Proteomics Techniques and Applications

Synaptic proteins in CSF as potential novel biomarkers for prognosis in prodromal Alzheimer’s disease

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Duits, Flora H., Brinkmalm, Gunnar, Teunissen, Charlotte E., Brinkmalm, Ann, Scheltens, Philip, Van der Flier, Wiesje M., Zetterberg, Henrik, Blennow, Kaj·2018·Alzheimer's Research & Therapy

Abstract

BACKGROUND: We investigated whether a panel of 12 potential novel biomarkers consisting of proteins involved in synapse functioning and immunity would be able to distinguish patients with Alzheimer's disease (AD) and patients with mild cognitive impairment (MCI) from control subjects. METHODS: We included 40 control subjects, 40 subjects with MCI, and 40 subjects with AD from the Amsterdam Dementia Cohort who were matched for age and sex (age 65 ± 5 years, 19 [48%] women). The mean follow-up of patients with MCI was 3 years. Two or three tryptic peptides per protein were analyzed in cerebrospinal fluid using parallel reaction monitoring mass spectrometry. Corresponding stable isotope-labeled peptides were added and used as reference peptides. Multilevel generalized estimating equations (GEEs) with peptides clustered per subject and per protein (as within-subject variables) were used to assess differences between diagnostic groups. To assess differential effects of individual proteins, we included the diagnosis × protein interaction in the model. Separate GEE analyses were performed to assess differences between stable patients and patients with progressive MCI (MCI-AD). RESULTS: There was a main effect for diagnosis (p < 0.01) and an interaction between diagnosis and protein (p < 0.01). Analysis stratified according to protein showed higher levels in patients with MCI for most proteins, especially in patients with MCI-AD. Chromogranin A, secretogranin II, neurexin 3, and neuropentraxin 1 showed the largest effect sizes; β values ranged from 0.53 to 0.78 for patients with MCI versus control subjects or patients with AD, and from 0.67 to 0.98 for patients with MCI-AD versus patients with stable MCI. In contrast, neurosecretory protein VGF was lower in patients with AD than in patients with MCI (ß = -0.93 [SE 0.22]) and control subjects (ß = 0.46 [SE 0.19]). CONCLUSIONS: Our results suggest that several proteins involved in vesicular transport and synaptic stability are elevated in patients with MCI, especially in patients with MCI progressing to AD dementia. This may reflect early events in the AD pathophysiological cascade. These proteins may be valuable as disease stage or prognostic markers in an early symptomatic stage of the disease.

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Authors
Duits, F. H., Brinkmalm, G., Teunissen, C. E., Brinkmalm, A., Scheltens, P., Van der Flier, W. M., Zetterberg, H., & Blennow, K.
Affiliations
  • Amsterdam Neuroscience (NL)
  • Sahlgrenska University Hospital (SE)
Corresponding author
Duits, Flora H.
Venue
Alzheimer's Research & Therapy
Published
2018-01-15
Volume
10
Issue
1
Pages
5-5
ISSN
1758-9193 (ISSN-L)
OpenAlex
W2796923525
Cited by
137
References
50
Citations by year
2026: 7 · 2025: 8 · 2024: 22 · 2023: 12 · 2022: 15 · 2021: 30 · 2020: 19 · 2019: 18 · 2018: 6
FWCI
14.56
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Alzheimer s Research & Therapy (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion, other-oa)
  • Pure Amsterdam UMC (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • UCL Discovery (University College London) (submittedVersion)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • Alzheimer Nederland (WE.15-2013-08)
  • Swedish research council
  • European Research Council
  • Åhlén-stiftelsen
  • Swedish state support for clinical research
  • Hjärnfonden
  • Swedish alzheimer foundation
  • Knut och Alice Wallenbergs Stiftelse
  • Torsten Söderbergs Stiftelse
  • Frimurarestiftelsen
  • Stiftelsen för Gamla Tjänarinnor
  • Gun och Bertil Stohnes Stiftelse
  • Magnus Bergvalls Stiftelse
  • Stichting Dioraphte
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
Keywords
prodromal Alzheimer's disease, mild cognitive impairment, cerebrospinal fluid biomarkers, synaptic proteins, chromogranin A, secretogranin II, NRXN3, VGF, vesicle trafficking, synapse stability, disease progression, prognosis
MeSH terms
Mental Status and Dementia Tests, Aged, Alzheimer Disease, Apolipoproteins E, Female, Follow-Up Studies, Humans, Male, Middle Aged, Nerve Tissue Proteins, Peptide Fragments, Phosphorylation, Prognosis, Mass Spectrometry, Synapses, Biomarkers, Amyloid beta-Peptides, tau Proteins, Cognitive Dysfunction, Prodromal Symptoms

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