Cited by 371Neuroscience and Neuropharmacology ResearchVisual perception and processing mechanismsNeurogenesis and neuroplasticity mechanisms

Experience-dependent pruning of dendritic spines in visual cortex by tissue plasminogen activator

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Mataga, Nobuko, Mizuguchi, Yoko, Hensch, Takao K.·2004·Neuron

Abstract

Sensory experience physically rewires the brain in early postnatal life through unknown processes. Here, we identify a robust anatomical consequence of monocular deprivation (MD) in layer II/III of visual cortex that corresponds to the rapid, functional loss of responsiveness preceding any changes in axonal input. Protrusions on pyramidal cell apical dendrites increased steadily after eye opening, but were transiently lost through competitive mechanisms after brief MD only during the physiological critical period. Proteolysis by tissue-type plasminogen activator (tPA) conversely declined with age and increased with MD only in young mice. Targeted disruption of tPA release or its upstream regulation by glutamic acid decarboxylase (GAD65) prevented MD-induced spine loss that was pharmacologically rescued concomitant with critical period plasticity. An extracellular mechanism for structural remodeling that is limited to the binocular zone upon proper detection of competing inputs thus links early sensory experience to visual function.

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Crossref · 10.1016/j.neuron.2004.11.028

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  • During the critical period, monocular deprivation induces a significant decrease in the density of dendritic spines on pyramidal neurons in deprived V1b, but this plasticity is lost with age.

    “During the critical period for ocular dominance plasticity, MD induces a significant decrease in the density of dendritic spines on pyramidal neurons in deprived V1b (contralateral to the occlusion), but this plasticity is lost with age (Mataga et al., 2004).”

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Authors
Mataga, N., Mizuguchi, Y., & Hensch, T. K.
Affiliations
RIKEN Center for Brain Science (JP)
Corresponding author
Hensch, Takao K.
Venue
Neuron
Publisher
Elsevier BV
Published
2004-12
Volume
44
Issue
6
Pages
1031-1041
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2030192664
Cited by
371
References
92
Citations by year
2026: 5 · 2025: 7 · 2024: 5 · 2023: 9 · 2022: 8 · 2021: 12 · 2020: 25 · 2019: 10 · 2018: 10 · 2017: 17 · 2016: 18 · 2015: 13 · 2014: 20 · 2013: 29 · 2012: 20
FWCI
6.80
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • RIKEN Brain Science Institute
  • Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
monocular deprivation, visual cortex, critical period plasticity, tissue plasminogen activator, glutamic acid decarboxylase, layer II/III pyramidal neurons, extracellular proteolysis
MeSH terms
Animals, Glutamate Decarboxylase, Humans, Isoenzymes, Tissue Plasminogen Activator, Sensory Deprivation, Visual Cortex, Vision, Monocular, Mice, Knockout, Dendritic Spines, Mice

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