Evidence map›Paper›PMID 9712650›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience1998

Dendrodendritic inhibition in the olfactory bulb is driven by NMDA receptors.

N E Schoppa, J M Kinzie, Y Sahara, T P Segerson, G L Westbrook

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 163 papers.

0numbers the graph read from it
0cells of the map it votes in
163citing papers in PubMed
4.3field-weighted citation impact, top 4% 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

163 citing papers in PubMed, 342 citations in OpenAlex.

  1. Article
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  4. Review
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  8. Connectivity and dynamics in the olfactory bulb.PLoS computational biology · 2022
    Article
  9. αFrontiers in cellular neuroscience · 2022
    Article
  10. Article
  11. Article
  12. Long-Range GABAergic Inhibition Modulates Spatiotemporal Dynamics of the Output Neurons in the Olfactory Bulb.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  13. Article
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  15. Article
  16. Activation of Granule Cell Interneurons by Two Divergent Local Circuit Pathways in the Rat Olfactory Bulb.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  17. Article
  18. Article
  19. Review
  20. Paradoxically Sparse Chemosensory Tuning in Broadly Integrating External Granule Cells in the Mouse Accessory Olfactory Bulb.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article

103 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

N E SchoppaVollum Institute, Oregon Health Sciences University, Portland, Oregon 97201, USA.
J M Kinzie
Y Sahara
T P Segerson
G L Westbrook
Vollum Institute · USOregon Health & Science University · US

Funding

SYNAPTIC TRANSMISSION IN THE CNSR01NS026494 · NINDS · OREGON HEALTH & SCIENCE UNIVERSITY · PI WESTBROOK, GARY L · 1993 to 2009
$3.0M
DENDRODENDRITIC SYNAPTIC MECHANISMS IN THE OLFACTORY BULF32DC000270 · NIDCD · OREGON HEALTH AND SCIENCE UNIVERSITY · PI SCHOPPA, NATHAN E · 1997 to 1998
–
EXCITATORY SYNAPTIC MECHANISMS IN THE CNSR29NS026494 · NINDS · OREGON HEALTH AND SCIENCE UNIVERSITY · PI WESTBROOK, GARY L · 1988 to 1992
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NIDCD NIH HHS 5F32 DC00270-02NIDCD NIH HHS F32 DC000270NINDS NIH HHS NS26494NINDS NIH HHS R01 NS026494
6 · The paper itself

Abstract

At many central excitatory synapses, AMPA receptors relay the electrical signal, whereas activation of NMDA receptors is conditional and serves a modulatory function. We show here quite a different role for NMDA receptors at dendrodendritic synapses between mitral and granule cells in the rat olfactory bulb. In whole-cell patch-clamp recordings in bulb slices, stimulation of mitral cells elicited slowly decaying, GABAA receptor-mediated reciprocal IPSCs that reflected prolonged GABA release from granule cells. Although granule cells had a normal complement of AMPA and NMDA receptors, the IPSC was completely blocked by the NMDA receptor antagonist D,L-AP-5, suggesting that NMDA receptor activation is an absolute requirement for dendrodendritic inhibition. The AMPA receptor antagonist 1,2,3,4-tetrahydro-6-nitro-2, 3-dioxobenzo[f]quinoxaline-7-sulfonamide (NBQX) had no effect on IPSCs in the absence of extracellular magnesium but modestly reduced IPSCs in 1 mM magnesium, indicating that the primary effect of the AMPA receptor-mediated depolarization was to facilitate the unblocking of NMDA receptors. Granule cell voltage recordings indicated that effective spike stimulation in granule cells depended on the slow NMDA receptor kinetics. Granule cells also showed a pronounced delay between synaptic stimulation and action potential generation, suggesting that their intrinsic membrane properties underlie the ineffectiveness of brief AMPA receptor-mediated EPSPs. NMDA receptors also seem to have a central role in dendrodendritic inhibition in vivo, because intraperitoneal dizocilpine maleate (MK-801) injection in young adult rats resulted in disinhibition of mitral cells as measured by the generation of c-fos mRNA. The unique dependence of dendrodendritic inhibition on slow EPSPs generated by NMDA receptors suggests that olfactory information processing depends on long-lasting reciprocal and lateral inhibition.

Indexed as

2-Amino-5-phosphonovalerateAnimalsDendritesDizocilpine MaleateExcitatory Amino Acid AntagonistsExcitatory Postsynaptic PotentialsIn Vitro TechniquesMagnesiumMaleNeural InhibitionOlfactory BulbPatch-Clamp TechniquesQuinoxalinesRatsRats, Sprague-DawleyReceptors, N-Methyl-D-Aspartate2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline2-Amino-5-phosphonovalerateDizocilpine MaleateExcitatory Amino Acid AntagonistsMagnesiumQuinoxalinesReceptors, N-Methyl-D-Aspartate

Identifiers

PMID9712650
PMCPMC6792983
OpenAlexW2154138317

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.