Evidence map›Paper›PMID 22652057›Full record

ArticleNeuropharmacology2012

Gating of NMDA receptor-mediated hippocampal spike timing-dependent potentiation by mGluR5.

Jeehyun Kwag, Ole Paulsen

Open access · hybridAbstract read
In one paragraph

Article in Neuropharmacology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 43% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. The how and why for multiple forms of hippocampal LTP.Frontiers in synaptic neuroscience · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Shank mutant mice as an animal model of autism.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2014
    Review
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 3 countries.

Jeehyun KwagDepartment of Brain and Cognitive Engineering, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 136-701, Republic of Korea. jkwag@korea.ac.kr
Ole Paulsen
Korea University · JPUniversity of Cambridge · GB

Funding

Biotechnology and Biological Sciences Research Council BB/D015758/1Biotechnology and Biological Sciences Research Council BB/H002383/2Medical Research Council G0001354Wellcome Trust 093875
6 · The paper itself

Abstract

Hippocampal long-term potentiation (LTP) is believed to be important for learning and memory. Experimentally, the pairing of precisely timed pre- and postsynaptic spikes within a time window of ∼10 ms can induce timing-dependent LTP (tLTP), but the requirements for induction of tLTP change with development: in young rodents single postsynaptic spikes are sufficient to induce tLTP, whereas postsynaptic burst firing appears to be required in the adult. However, hippocampal neurons in vivo show theta-modulated single spike activities also in older hippocampus. Here we investigated the conditions for single spike pairing to induce tLTP at older CA3-CA1 synapses. We found that the pairing of single pre- and postsynaptic spikes could induce tLTP in older hippocampus when the postsynaptic neuronal membrane was depolarized and the pairing frequency exceeded ∼4 Hz. The spike frequency requirement is postsynaptic, as tLTP could still be induced with presynaptic stimulation at 1 Hz as long as the postsynaptic spike frequency exceeded ∼4 Hz, suggesting that postsynaptic theta-frequency activity is required for the successful induction of tLTP at older CA3-CA1 synapses. The induction of tLTP was blocked by an NMDA receptor antagonist and by the selective mGluR5 blockers, MPEP and MTEP, whereas activation of mGluR1 and mGluR5 by DHPG relieved the postsynaptic spike frequency requirement for tLTP induction. These results suggest that activation of mGluR5 during single-spike pairing at older CA3-CA1 synapses gates NMDA receptor-dependent tLTP.

Indexed as

Long-Term PotentiationSynaptic TransmissionAgingAnimalsElectric StimulationExcitatory Amino Acid AgonistsExcitatory Amino Acid AntagonistsHippocampusIn Vitro TechniquesMembrane Transport ModulatorsNerve Tissue ProteinsNeuronsRatsRats, WistarReceptor, Metabotropic Glutamate 5Receptors, Metabotropic GlutamateExcitatory Amino Acid AgonistsExcitatory Amino Acid AntagonistsGrm5 protein, ratMembrane Transport Modulatorsmetabotropic glutamate receptor type 1Nerve Tissue ProteinsReceptor, Metabotropic Glutamate 5Receptors, Metabotropic GlutamateReceptors, N-Methyl-D-Aspartate

Identifiers

PMID22652057
PMCPMC3396853
OpenAlexW1990372425

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.