Cited by 38Neuroscience and Neuropharmacology ResearchGenetics and Neurodevelopmental DisordersNicotinic Acetylcholine Receptors Study

Intra-synapse-type and inter-synapse-type relationships between synaptic size and AMPAR expression

Fukazawa, Yugo, Shigemoto, Ryuichi·2012·Current Opinion in Neurobiology

Abstract

To gain insights into structure-function relationship of excitatory synapses, we revisit our quantitative analysis of synaptic AMPAR by highly sensitive freeze-fracture replica labeling in eight different connections. All of these connections showed linear correlation between synapse size and AMPAR number indicating a common intra-synapse-type relationship in CNS synapses. On the contrary, inter-synapse-type relationship is unexpected indicating no correlation between averages of synapse size and AMPAR number. Interestingly, connections with large average synapse size and low AMPAR density showed high variability of AMPAR number and mosaic distribution within the postsynaptic membrane. We propose an idea that these connections may quickly exhibit synaptic plasticity by modifying AMPAR density/number whereas those with high AMPAR density change their efficacy by modifying synapse size.

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Crossref · 10.1016/j.conb.2012.01.006

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36 of 36 references verified0 citation errors · 0 not checkable

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  • The number of AMPARs at dendritic spine synapses is highly variable but averages roughly 50, and this number strongly correlates with the size of the PSD.

    “The number of AMPARs at dendritic spine synapses is highly variable but averages roughly 50 (143, 438, 439), and this number strongly correlates with the size of the PSD.”

    From Synaptic memory and CaMKII (2023) · cites this paper as [438]

  • The number of NMDARs at spine synapses and perhaps filopodia synapses is much less variable, averaging roughly 20, and this number is largely independent of PSD size.

    “The number of NMDARs at spine synapses and perhaps filopodia synapses is much less variable, averaging roughly 20, and this number is largely independent of PSD size (143, 438, 439).”

    From Synaptic memory and CaMKII (2023) · cites this paper as [438]

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Authors
Fukazawa, Y., & Shigemoto, R.
Affiliations
The Graduate University for Advanced Studies, SOKENDAI (JP)
Corresponding author
Shigemoto, Ryuichi
Venue
Current Opinion in Neurobiology
Publisher
Elsevier BV
Published
2012-06
Volume
22
Issue
3
Pages
446-452
ISSN
0959-4388 (ISSN-L)
OpenAlex
W2030664089
Cited by
38
References
36
Citations by year
2025: 3 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 8 · 2020: 2 · 2019: 1 · 2018: 3 · 2017: 4 · 2016: 3 · 2015: 2 · 2014: 3 · 2013: 2
FWCI
0.24
Type
journal article
Language
en
Open access
closed
Locations
  • Current Opinion in Neurobiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • SORST
  • CREST
  • Japan Science and Technology Agency (JST)
  • Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT) (20019031, 18022043)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
Keywords
excitatory synapses, structure-function relationship, postsynaptic membrane, synaptic plasticity, synaptic efficacy
MeSH terms
Animals, Central Nervous System, Freeze Fracturing, Synaptic Transmission, Neuronal Plasticity, Synapses, Receptors, AMPA

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