Cited by 137Neurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental Disorders

Structural and Functional Aberrations in the Cerebral Cortex of Tenascin-C Deficient Mice

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Irintchev, Andrey, Rollenhagen, Astrid, Troncoso, Edgardo, Kiss, Jozsef Z., Schachner, Melitta·2005·Cerebral Cortex

Abstract

The extracellular matrix glycoprotein tenascin-C (TNC) has been implicated in neural development and plasticity but many of its functions in vivo remain obscure. Here we addressed the question as to whether the constitutive absence of TNC in mice affects cortical physiology and structure. Defined major cell populations (neurons and inhibitory neuronal subpopulations, astrocytes, oligodendrocytes and microglia) were quantified in the somatosensory and motor cortices of adult TNC deficient (TNC-/-) and wild-type (TNC+/+) mice by immunofluorescence labelling and stereology. In both areas studied we found abnormally high neuronal density, astrogliosis, low density of parvalbumin-positive interneurons and reduced ratios of oligodendrocytes to neurons and of inhibitory to excitatory neurons in the TNC deficient as opposed to the non-deficient animals. Analysis of Golgi-impregnated layer V pyramidal neurons in TNC-/- animals showed aberrant dendrite tortuosity and redistribution of stubby spines within first- to third-order dendritic arbors. Significantly enhanced responses upon whisker stimulation were recorded epicranially over the barrel and the motor cortices of TNC-/- as compared to TNC+/+ animals, and this effect might be associated with the diminished inhibitory circuitry. These results indicate that TNC is essential for normal cortical development and function.

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Crossref · 10.1093/cercor/bhh195

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Authors
Irintchev, A., Rollenhagen, A., Troncoso, E., Kiss, J. Z., & Schachner, M.
Affiliations
  • Universität Hamburg (DE)
  • University of Freiburg (DE)
  • University of Geneva (CH)
  • University Medical Center Hamburg-Eppendorf (DE)
Corresponding author
Irintchev, Andrey
Venue
Cerebral Cortex
Published
2004-11-10
Volume
15
Issue
7
Pages
950-962
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W1988532274
Cited by
137
References
80
Citations by year
2026: 1 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 7 · 2021: 4 · 2020: 6 · 2019: 3 · 2018: 7 · 2017: 7 · 2016: 6 · 2015: 3 · 2014: 7 · 2013: 11 · 2012: 9
FWCI
1.60
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed (publishedVersion)
  • reroDoc Digital Library (submittedVersion)
  • Rutgers University Community Repository (Rutgers University) (submittedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
  • Archive ouverte UNIGE (University of Geneva) (submittedVersion, cc-by)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
tenascin-C, cortical development, extracellular matrix, neuronal density, astrocyte activation, parvalbumin interneurons, oligodendrocytes, microglia, dendritic spine morphology, layer 5 pyramidal neurons, whisker stimulation, barrel cortex, motor cortex, cortical inhibition
MeSH terms
Animals, Cell Count, Evoked Potentials, Somatosensory, Female, Interneurons, Male, Mice, Inbred C57BL, Mice, Mutant Strains, Motor Cortex, Neural Inhibition, Neuroglia, Somatosensory Cortex, Vibrissae, Pyramidal Cells, Tenascin, Dendritic Spines, Mice

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