Evidence map›Paper›PMID 10704494›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2000

Organization of ionotropic glutamate receptors at dendrodendritic synapses in the rat olfactory bulb.

M Sassoè-Pognetto, O P Ottersen

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

34 citing papers in PubMed, 88 citations in OpenAlex.

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  12. Biophysical model for gamma rhythms in the olfactory bulb via subthreshold oscillations.Proceedings of the National Academy of Sciences of the United States of America · 2009
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  13. Subunit- and pathway-specific localization of NMDA receptors and scaffolding proteins at ganglion cell synapses in rat retina.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2009
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  19. Multiple modes of synaptic excitation of olfactory bulb granule cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2007
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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

2 authors at 1 institution in 2 countries.

M Sassoè-PognettoDepartment of Anatomy, University of Turin, I-10126 Turin, Italy. marco.sassoe@unito.it
O P Ottersen
University of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dendrodendritic synapses between mitral (or tufted) and granule cells of the olfactory bulb play a major role in the processes of odor discrimination and olfactory learning. Release of glutamate at these synapses activates postsynaptic receptors on the dendritic spines of granule cells, as well as presynaptic NMDA receptors in the mitral cell membrane. However, immunocytochemical studies have failed to demonstrate the presence of ionotropic glutamate receptors in granule cell dendrites. By using a postembedding immunogold procedure, we describe here the precise organization of neurotransmitter receptors at dendrodendritic synapses. We show that there is a selective localization of glutamate and GABA receptors at asymmetric and symmetric synaptic junctions, respectively. In addition, we demonstrate that NMDA and AMPA receptors are clustered at postsynaptic specializations on granule cell spines and that they are extensively colocalized. Conversely, glutamate receptors do not appear to be concentrated in clusters on mitral cell dendrites, suggesting that the presynaptic effects of glutamate are mediated by a small complement of extrasynaptic receptors. By analyzing the subsynaptic distribution of the NR1 and GluR2/3 subunits, we show that they are distributed along the entire extent of the postsynaptic specialization, indicating that both NMDA and AMPA receptors are available for dendrodendritic signaling between mitral and granule cells. These results indicate that the principles recently found to underlie the organization of glutamate receptors at axospinous synapses also apply to dendrodendritic synapses.

Indexed as

AnimalsDendritesImmunohistochemistryMicroscopy, ImmunoelectronOlfactory BulbRatsRats, WistarReceptors, AMPAReceptors, GABAReceptors, N-Methyl-D-AspartateSynapsesglutamate receptor ionotropic, AMPA 2glutamate receptor ionotropic, AMPA 3Receptors, AMPAReceptors, GABAReceptors, N-Methyl-D-Aspartate

Identifiers

PMID10704494
PMCPMC6772496
OpenAlexW1535585371

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.