Journal Article

DZNE-2020-05563

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Extracellular matrix alterations in the ketamine model of schizophrenia.

Matuszko, G. (First author)DZNE* ; Curreli, S.DZNE* ; Kaushik, R.DZNE* ; Becker, A. ; Dityatev, A. (Last author)DZNE*

2017
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.neuroscience.2017.03.010

Abstract: The neural extracellular matrix (ECM) plays an important role in regulation of perisomatic GABAergic inhibition and synaptic plasticity in the hippocampus and cortex. Decreased labeling of perineuronal nets, a form of ECM predominantly associated with parvalbumin-expressing interneurons in the brain, has been observed in post-mortem studies of schizophrenia patients, specifically, in brain areas such as prefrontal cortex, entorhinal cortex, and amygdala. Moreover, glial ECM in the form of dandelion clock-like structures was reported to be altered in schizophrenia patients. Here, we verified whether similar abnormalities in neural ECM can be reproduced in a rat model of schizophrenia, in which animals received sub-chronic administration of ketamine to reproduce the aspects of disease related to disrupted signaling through N-methyl-D-aspartate receptors. Our study focused on two schizophrenia-related brain areas, namely the medial prefrontal cortex (mPFC) and hippocampus. Semi-quantitative immunohistochemistry was performed to evaluate investigate ECM expression using Wisteria floribunda agglutinin (WFA) and CS56 antibody, both labeling distinct chondroitin sulfate epitopes enriched in perineuronal nets and glial ECM, respectively. Our analysis revealed that ketamine-treated rats exhibit reduced number of WFA-labeled perineuronal nets, and a decreased intensity of parvalbumin fluorescence in mPFC interneurons somata. Moreover, we found an increased expression of CS56 immunoreactive form of ECM. Importantly, the loss of perineuronal nets was revealed in the mPFC, and was not detected in the hippocampus, suggesting regional specificity of ECM alterations. These data open an avenue for further investigations of functional importance of ECM abnormalities in schizophrenia as well as for search of treatments for their compensation.

Keyword(s): Amygdala: drug effects (MeSH) ; Amygdala: metabolism (MeSH) ; Animals (MeSH) ; Disease Models, Animal (MeSH) ; Extracellular Matrix: drug effects (MeSH) ; Extracellular Matrix: metabolism (MeSH) ; Hippocampus: drug effects (MeSH) ; Hippocampus: metabolism (MeSH) ; Immunohistochemistry: methods (MeSH) ; Ketamine: pharmacology (MeSH) ; Male (MeSH) ; Neuroglia: drug effects (MeSH) ; Neuroglia: metabolism (MeSH) ; Neurons: drug effects (MeSH) ; Neurons: metabolism (MeSH) ; Parvalbumins: metabolism (MeSH) ; Rats, Sprague-Dawley (MeSH) ; Schizophrenia: chemically induced (MeSH) ; Schizophrenia: metabolism (MeSH) ; Parvalbumins ; Ketamine

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Contributing Institute(s):

1. Molecular Neuroplasticity (AG Dityatev)
2. Core KAP (Kooperationseinheit Angewandte Präventionsforschung) (Core Technical Staff)

Research Program(s):

1. 342 - Disease Mechanisms and Model Systems (POF3-342) (POF3-342)

Appears in the scientific report 2017

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Database coverage:
; BIOSIS Previews ; Clarivate Analytics Master Journal List ; Current Contents - Life Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Web of Science Core Collection

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