Journal
JOURNAL OF ALZHEIMERS DISEASE
Volume 59, Issue 4, Pages 1327-1334Publisher
IOS PRESS
DOI: 10.3233/JAD-170368
Keywords
Alzheimer's disease; cerebrospinal fluid; cognitive aging; frontotemporal dementia; mild cognitive impairment; neurogranin
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Funding
- AXA Research Fund
- Fondation Universite Pierre et Marie Curie
- Fondation pour la Recherche sur Alzheimer, Paris, France
- program Investissements d'avenir (Agence Nationale de la Recherche-10-IA Agence Institut Hospitalo-Universitaire-6) [ANR-10-IAIHU-06]
- Investissements d'avenir [ANR-10-IAIHU-06]
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We investigated cerebrospinal fluid (CSF) concentrations of the postsynaptic biomarker neurogranin at baseline in cognitively healthy controls (HC) compared to individuals with mild cognitive impairment (MCI), patients with Alzheimer's disease (AD) dementia, and patients with frontotemporal dementia (FTD). CSF neurogranin was quantified using an in-house immunoassay in a cross-sectional multicenter study of 108 participants [AD dementia (n = 35), FTD (n = 9), MCI (n = 41), cognitively HC (n = 23)]. CSF neurogranin concentrations were significantly higher in AD patients compared with both HC subjects and FTD patients, suggesting that increased CSF neurogranin concentrations may indicate AD-related pathophysiology. CSF neurogranin was independently associated with both total tau and hyperphosphorylated tau proteins, whereas a non-significant correlation with the 42-amino acid-long amyloid-beta peptide was evident. CSF neurogranin, however, was not superior to core AD biomarkers in differentiating HC from the three diagnostic groups, and it did not improve their diagnostic accuracy. We conclude that further classification and longitudinal studies are required to shed more light into the potential role of neurogranin as a pathophysiological biomarker of neurodegenerative diseases.
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