ArticleThe European journal of neuroscience2008
Metabotropic glutamate receptor 1 (mGluR1) and 5 (mGluR5) regulate late phases of LTP and LTD in the hippocampal CA1 region in vitro.
Article in The European journal of neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
75 citing papers in PubMed, 139 citations in OpenAlex.
- GRASPing experience-dependent protein expression signatures enriched for hippocampal engram cell synapses.Science advances · 2026Article
- The how and why for multiple forms of hippocampal LTP.Frontiers in synaptic neuroscience · 2026Review
- Impairment of Group I Metabotropic Glutamate Receptors in the Dorsal Striatum of the R451C-Neuroligin 3 Mouse Model of Autism Spectrum Disorder.Journal of neurochemistry · 2025Article
- Human stem cell-based models to study synaptic dysfunction and cognition in schizophrenia: A narrative review.Schizophrenia research · 2024Review
- Loss of mGluMolecular psychiatry · 2024Article
- Brain mGlu5 Is Linked to Cognition and Cigarette Smoking but Does Not Differ From Control in Early Abstinence From Chronic Methamphetamine Use.The international journal of neuropsychopharmacology · 2024Article
- Metabotropic glutamate receptors (mGluRs) in epileptogenesis: an update on abnormal mGluRs signaling and its therapeutic implications.Neural regeneration research · 2024Review
- GluN2A or GluN2B subunits of the NMDA receptor contribute to changes in neuronal excitability and impairments in LTP in the hippocampus of aging mice but do not mediate detrimental effects of oligomeric Aβ (1-42).Frontiers in aging neuroscience · 2024Article
- ΔInternational journal of molecular sciences · 2023Article
- Article
- Article
- Role of mGlu5 in Persistent Forms of Hippocampal Synaptic Plasticity and the Encoding of Spatial Experience.Cells · 2022Review
- Allosteric Modulators of Metabotropic Glutamate Receptors as Novel Therapeutics for Neuropsychiatric Disease.Pharmacological reviews · 2022Review
- A multilayer network model of neuron-astrocyte populations in vitro reveals mGluRNetwork neuroscience (Cambridge, Mass.) · 2022Article
- mGluR5 ablation leads to age-related synaptic plasticity impairments and does not improve Huntington's disease phenotype.Scientific reports · 2022Article
- A computational model of dopaminergic modulation of hippocampal Schaffer collateral-CA1 long-term plasticity.Journal of computational neuroscience · 2022Article
- Selective Recruitment of Presynaptic and Postsynaptic Forms of mGluR-LTD.Frontiers in synaptic neuroscience · 2022Article
- BACE1 controls synaptic function through modulating release of synaptic vesicles.Molecular psychiatry · 2021Article
- Three's Company: Neuroimmune activation, sex, and memory at the tripartite synapse.Brain, behavior, & immunity - health · 2021Article
- Article
15 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The group I metabotropic glutamate receptors, mGluR1 and mGluR5, exhibit differences in their regulation of synaptic plasticity, suggesting that these receptors may subserve separate functional roles in information storage. In addition, although effects in vivo are consistently described, conflicting reports of the involvement of mGluRs in hippocampal synaptic plasticity in vitro exist. We therefore addressed the involvement of mGluR1 and mGluR5 in long-term potentiation (LTP) and long-term depression (LTD) in the hippocampal CA1 region of adult male rats in vitro. The mGluR1 antagonist (S)-(+)-alpha-amino-4-carboxy-2-methylbenzene-acetic acid (LY367385) impaired both induction and late phases of both LTP and LTD, when applied before high-frequency tetanization (HFT; 100 Hz) or low-frequency stimulation (LFS; 1 Hz), respectively. Application after either HFT or LFS had no effect. The mGluR5 antagonist 2-methyl-6-(phenylethynyl)pyridine (MPEP), when given before HFT, inhibited both the induction and late phases of LTP. When given after HFT, late LTP was inhibited. MPEP, given prior to LFS, impaired LTD induction, although stable LTD was still expressed. Application after LFS significantly impaired late phases of LTD. Activation of protein synthesis may comprise a key mechanism underlying the group I mGluR contribution to synaptic plasticity. The mGluR5 agonist (R,S)-2-chloro-5-hydroxyphenylglycine (CHPG) converted short-term depression into LTD. Effects were prevented by application of the protein synthesis inhibitor anisomycin, suggesting that protein synthesis is triggered by group I mGluR activation to enable persistency of synaptic plasticity. Taken together, these data support the notion that both mGluR1 and mGluR5 are critically involved in bidirectional synaptic plasticity in the CA1 region and may enable functional differences in information encoding through LTP and LTD.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.