Cited by 62Neuroscience and Neuropharmacology ResearchHearing, Cochlea, Tinnitus, GeneticsProteoglycans and glycosaminoglycans research

Perineuronal nets in the rat medial nucleus of the trapezoid body surround neurons immunoreactive for various amino acids, calcium-binding proteins and the potassium channel subunit Kv3.1b

Härtig, Wolfgang, Singer, Andrea, Grosche, Jens, Brauer, Kurt, Ottersen, Ole Petter, Brückner, Gert·2001·Brain Research

Abstract

Perineuronal nets (PNs) are known as chondroitin sulfate-rich, lattice-like coatings of the extracellular matrix ensheathing mainly GABAergic, parvalbumin-containing neurons especially in the cerebral cortex. PNs have also been detected around GABA-immunonegative cells which were shown to be not aminergic, cholinergic, nitrinergic or peptidergic in various brain regions of some mammalian species. To find out whether glycine and aspartate may occur in net-bearing neurons the present study was focused on the rat medial nucleus of the trapezoid body (MNTB) which contains a large portion of cells immunoreactive for these amino acids, but appears to be devoid of GABA-immunoreactive cell bodies. PNs were detected around many glycine- and aspartate-immunopositive neurons in the MNTB by carbocyanine double labeling and confocal laser scanning microscopy. An additional finding was that the lectin-cytochemically stained extracellular matrix surrounds the calretinin-immunoreactive calyces of Held known as giant glutamatergic endbulbs which cover glycinergic principal cells in the MNTB. As elucidated by triple fluorescence labeling, the vast majority of somata co-expressed the calcium-binding proteins parvalbumin and calbindin, but not calretinin. The observed co-localization of PNs and immunoreactivity for the voltage-dependent potassium channel Kv3.1b - as an established marker of fast-firing parvalbumin-containing neurons - supports the assumed function of PNs as a cation exchanger ensuring rapid ion transport as required by highly active nerve cells.

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Crossref · 10.1016/s0006-8993(01)02211-9

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Authors
Härtig, W., Singer, A., Grosche, J., Brauer, K., Ottersen, O. P., & Brückner, G.
Affiliations
  • Leipzig University (DE)
  • University of Oslo (NO)
Corresponding author
Härtig, Wolfgang
Venue
Brain Research
Publisher
Elsevier BV
Published
2001-04
Volume
899
Issue
1-2
Pages
123-133
ISSN
0006-8993 (ISSN-L)
OpenAlex
W1985604909
Cited by
62
References
81
Citations by year
2024: 3 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 4 · 2016: 5 · 2015: 5 · 2014: 4 · 2013: 2 · 2012: 6
FWCI
0.74
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Sensory Systems › Hearing, Cochlea, Tinnitus, Genetics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
Keywords
perineuronal nets, medial nucleus of the trapezoid body, parvalbumin, calbindin, calretinin, calcium-binding proteins, extracellular matrix, chondroitin sulfate, ion transport, rats
MeSH terms
Amino Acids, Animals, Calcium-Binding Proteins, Extracellular Matrix, Female, Immunohistochemistry, Male, Nerve Net, Nerve Tissue Proteins, Neurons, Pons, Potassium Channels, Rats, Wistar, Potassium Channels, Voltage-Gated, Rats, Shaw Potassium Channels

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