Evidence map›Paper›PMID 24554729›Full record

ArticleCerebral cortex (New York, N.Y. : 1991)2015

GluN2A-/- Mice Lack Bidirectional Synaptic Plasticity in the Dentate Gyrus and Perform Poorly on Spatial Pattern Separation Tasks.

Timal S Kannangara, Brennan D Eadie, Crystal A Bostrom, Kristin Morch, Patricia S Brocardo, Brian R Christie

Abstract read
In one paragraph

Article in Cerebral cortex (New York, N.Y. : 1991), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

38 citing papers in PubMed, 60 citations in OpenAlex.

  1. Article
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  4. Biological psychiatry global open science · 2025
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  11. Adiponectin rescues synaptic plasticity in the dentate gyrus of a mouse model of Fragile X Syndrome.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
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  15. Locus coeruleus input-modulated reactivation of dentate gyrus opioid-withdrawal engrams promotes extinction.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
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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

6 authors at 1 institution in 1 country.

Timal S KannangaraDivision of Medical Sciences Department of Cellular and Physiological Sciences Graduate Programs of Neuroscience and the Brain Research Centre, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3.
Brennan D EadieDivision of Medical Sciences Department of Cellular and Physiological Sciences Graduate Programs of Neuroscience and the Brain Research Centre, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3.
Crystal A BostromDivision of Medical Sciences Department of Biology, University of Victoria, BC, Canada, V8P 5C2 and.
Kristin MorchDivision of Medical Sciences.
Patricia S BrocardoDivision of Medical Sciences.
Brian R ChristieDivision of Medical Sciences Department of Biology, University of Victoria, BC, Canada, V8P 5C2 and Department of Cellular and Physiological Sciences Graduate Programs of Neuroscience and the Brain Research Centre, University of British Columbia, Vancouver, BC, Canada, V6T 1Z3.
University of British Columbia · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

The different secondary subunits of the N-methyl-d-aspartate (NMDA) receptor each convey unique biophysical properties to the receptor complex, and may be key in determining the functional role played by NMDA receptors. In the hippocampus, the GluN2A and GluN2B subunits are particularly abundant; however, their exact roles in synaptic plasticity and behavior remain controversial. Here, we show that mice carrying a deletion for the GluN2A subunit (GluN2A(-/-)) demonstrate a severely compromised NMDA to AMPA receptor current ratio in granule cells from the dentate gyrus (DG), while granule cell morphology is unaltered. This deficit is accompanied by significant impairments in both LTP and LTD in the DG, whereas only minor impairments are observed in the CA1. In accordance with these hippocampal region-specific deficits, GluN2A(-/-) mice show impaired performance on the DG-associated task of spatial pattern separation. In contrast, GluN2A(-/-) mice show no deficit in temporal pattern separation, a process associated with CA1 functioning. Thus, our results establish the GluN2A subunit as a significant contributor to both bidirectional synaptic plasticity and spatial pattern separation in the DG.

Indexed as

AnimalsCA1 Region, HippocampalDendritesDentate GyrusLong-Term PotentiationMaleMice, Inbred C57BLMice, KnockoutNeuropsychological TestsPatch-Clamp TechniquesPresynaptic TerminalsReceptors, AMPAReceptors, N-Methyl-D-AspartateSpace PerceptionSynaptic TransmissionTime PerceptionReceptors, AMPAReceptors, N-Methyl-D-Aspartatedentate gyruslong-term depressionlong-term potentiationN-methyl-d-aspartateNR2A

Identifiers

PMID24554729
PMCPMC4494024
OpenAlexW2118904060

What OpenQuestion holds

Textmetadata
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.