Cited by 22Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Neurogranin and neuronal pentraxin receptor as synaptic dysfunction biomarkers in Alzheimer’s disease

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Dulewicz, Maciej, Kulczyńska-Przybik, Agnieszka, Słowik, Agnieszka, Borawska, Renata, Mroczko, Barbara·2021·Journal of Clinical Medicine

Abstract

Synaptic loss and dysfunction are one of the earliest signs of neurodegeneration associated with cognitive decline in Alzheimer's disease (AD). It seems that by assessing proteins related to synapses, one may reflect their dysfunction and improve the understanding of neurobiological processes in the early stage of the disease. To our best knowledge, this is the first study that analyzes the CSF concentrations of two synaptic proteins together, such as neurogranin (Ng) and neuronal pentraxins receptor (NPTXR) in relation to neurochemical dementia biomarkers in Alzheimer's disease. METHODS: Ng, NPTXR and classical AD biomarkers concentrations were measured in the CSF of patients with AD and non-demented controls (CTRL) using an enzyme-linked immunosorbent assay (ELISA) and Luminex xMAP technology. RESULTS: The CSF level of Ng was significantly higher, whereas the NPTXR was significantly lower in the AD patients than in cognitively healthy controls. As a first, we calculated the NPTXR/Ng ratio as an indicator of synaptic disturbance. The patients with AD presented a significantly decreased NPTXR/Ng ratio. The correlation was observed between both proteins in the AD and the whole study group. Furthermore, the relationship between the Ng level and pTau181 was found in the AD group of patients. CONCLUSIONS: The Ng and NPTXR concentrations in CSF are promising synaptic dysfunction biomarkers reflecting pathological changes in AD.

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Authors
Dulewicz, M., Kulczyńska-Przybik, A., Słowik, A., Borawska, R., & Mroczko, B.
Affiliations
  • Medical University of Białystok (PL)
  • Department of Neurodegeneration Diagnostics, Medical University of Bialystok, 15-269 Bialystok, Poland
  • Jagiellonian University (PL)
Corresponding author
Dulewicz, Maciej
Venue
Journal of Clinical Medicine
Publisher
MDPI AG
Published
2021-10-02
Volume
10
Issue
19
Pages
4575
ISSN
2077-0383 (ISSN-L)
OpenAlex
W3203753656
Cited by
22
References
82
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 4 · 2022: 2
FWCI
2.51
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Medicine (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Homo Politicus (Academy of Humanities and Economics in Lodz) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Medical University of Białystok (Grant No. SUB/1/DN/21/005/1198)
  • Project No. POWR.03.02.00-00-I051/16 from the European Union funds, POWER 2014-2020 (Grant No. 04/IMSD/G/2019)
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, neurogranin, synaptic dysfunction, cerebrospinal fluid biomarkers, p-tau181, tau phosphorylation, synaptic proteins, early diagnosis

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