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CSF α-synuclein correlates with CSF neurogranin in late-life depression.

Journal article
Authors Davide Bruno
Chelsea Reichert Plaska
Daniel P A Clark
Henrik Zetterberg
Kaj Blennow
Marcel M Verbeek
Nunzio Pomara
Published in The International journal of neuroscience
Pages 1-5
ISSN 1563-5279
Publication year 2020
Published at Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Pages 1-5
Language en
Links dx.doi.org/10.1080/00207454.2020.17...
www.ncbi.nlm.nih.gov/entrez/query.f...
Subject categories Neurochemistry

Abstract

Purpose/aim of the study: Major depressive disorder (MDD) in late life is linked to increased risk of subsequent dementia, but it is still unclear exactly what pathophysiological mechanisms underpin this link. A potential mechanism related to elevated risk of dementia in MDD is increased levels of α-synuclein (α-Syn), a protein found in presynaptic neuronal terminals.Materials and methods: In this study, we examined cerebrospinal fluid (CSF) levels of α-Syn in conjunction with biomarkers of neurodegeneration (amyloid-β 42, total and phospho tau) and synaptic dysfunction (neurogranin), and measures of memory ability, in 27 cognitively intact older individuals with MDD and 19 controls.Results: Our results show that CSF α-Syn levels did not significantly differ across depressed and control participants, but α-Syn was directly associated with neurogranin levels, and indirectly linked to poorer memory ability.Conclusions: All in all, we found that α-Syn may be implicated in the association between late life MDD and synaptic dysfunction, although further research is needed to confirm these results.

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