Cited by 617Neuroscience and Neuropharmacology ResearchMemory and Neural MechanismsGenetics and Neurodevelopmental Disorders

Reduced hippocampal long-term potentiation and context-specific deficit in associative learning in mGluR1 mutant mice.

Aiba, A·1994·Cell

Abstract

We generated a novel strain of mutant mouse with a deletion in the gene encoding metabotropic glutamate receptor 1 (mGluR1). Gross anatomy of the hippocampus, excitatory synaptic transmission, long-term depression, and short-term potentiation in the hippocampal CA1 region are all apparently normal in the mutant mice. In contrast, long-term potentiation (LTP) is substantially reduced, and a moderate level of impairment is observed in context-specific associative learning. We propose that mGluR1 is not "in line" in LTP production, but rather modulates the plasticity process, and hence affects context-specific associative learning.

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Crossref · 10.1016/0092-8674(94)90204-6

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  • The only exceptional case, the mGluR1 mutant mice, is complicated by the fact that two groups have generated and analyzed these mutants independently and have obtained opposing results.

    “It is important to point out that the only exceptional case, namely that of the mGluR1 mutant mice, is complicated by the fact that two groups have generated and analyzed these mutants independently and have obtained opposing results (Aiba et al., 1994; Conquet et al., 1994; Chen and Tonegawa, 1997).”
  • The hippocampus plays a crucial role in context-dependent fear conditioning.

    “Numerous studies, using lesioning (Kim and Fanselow, 1992;Phillips and LeDoux, 1992) and genetic (Aiba et al., 1994;Tsien et al., 1996) strategies, indicated that the hippocampus plays a crucial role in context-dependent fear conditioning.”

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Authors
Aiba, A.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Aiba, A
ORCID
Aiba, A
Venue
Cell
Publisher
Elsevier BV
Published
1994-10-21
Volume
79
Issue
2
Pages
365-375
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1983956991
Cited by
614
References
49
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 7 · 2022: 10 · 2021: 13 · 2020: 14 · 2019: 11 · 2018: 5 · 2017: 9 · 2016: 14 · 2015: 14 · 2014: 13 · 2013: 12 · 2012: 21
FWCI
16.15
Type
journal article
Language
en
Open access
closed
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Rare & Special e-Zone (The Hong Kong University of Science and Technology) (submittedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01 NS32925, R01NS020591, NS20591, R01NS032925)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
metabotropic glutamate receptor 1, hippocampal long-term potentiation, hippocampal CA1, synaptic plasticity, long-term depression, short-term potentiation, excitatory synaptic transmission, learning disabilities
MeSH terms
Animals, Base Sequence, Electric Stimulation, Female, Genes, Hippocampus, Male, Mice, Inbred C57BL, Molecular Sequence Data, Synaptic Transmission, Neuronal Plasticity, Restriction Mapping, Receptors, Glutamate, Long-Term Potentiation, DNA Primers, Mice, Knockout, Mice, In Vitro Techniques

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