Evidence map›Paper›PMID 16374812›Full record

ArticleThe Journal of comparative neurology2006

Developmental period for N-methyl-D-aspartate (NMDA) receptor-dependent synapse elimination correlated with visuotopic map refinement.

Matthew T Colonnese, Martha Constantine-Paton

Open access · greenAbstract readComparative Study
In one paragraph

Article in The Journal of comparative neurology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 17% 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

25 citing papers in PubMed, 46 citations in OpenAlex.

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  7. Synaptic plasticity in the facial nucleus in rats following infraorbital nerve manipulation after facial nerve injury.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2016
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  17. Control of excitatory CNS synaptogenesis by astrocyte-secreted proteins Hevin and SPARC.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
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  20. "Slow activity transients" in infant rat visual cortex: a spreading synchronous oscillation patterned by retinal waves.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2010
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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 2 institutions in 1 country.

Matthew T ColonneseMcGovern Institute for Brain Research, Department of Biology, Cambridge, Massachusetts 02139-4307, USA. mcolonne@mit.edu
Martha Constantine-Paton
Massachusetts Institute of Technology · USMcGovern Institute for Brain Research · US

Funding

Developmental Regulation of Glutamate Receptor FunctionR01EY014074 · NEI · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI CONSTANTINE-PATON, MARTHA NA · 2003 to 2017
$5.2M
Experiments on the Development of Neural PathwaysR01EY006039 · NEI · YALE UNIVERSITY · PI CONSTANTINE-PATON, MARTHA NA · 1985 to 2010
$4.0M
EXPERIMENTS ON THE DEVELOPMENT OF NEURAL PATHWAYSR37EY006039 · NEI · YALE UNIVERSITY · PI CONSTANTINE-PATON, MARTHA C · 1991 to 2000
$309k
NEI NIH HHS EY06039NEI NIH HHS R01 EY006039NEI NIH HHS R01 EY014074NEI NIH HHS R37 EY006039
6 · The paper itself

Abstract

During a short perinatal interval, N-methyl-D-aspartate receptor (NMDAR) function is essential to a process in which spontaneous retinal waves focus retinal axon arbors in the superficial layers of the rodent superior colliculus (sSC). Here we provide evidence that this NMDAR-dependent axonal refinement occurs through elimination of uncorrelated retinal synapses arising from disparate loci, rather than stabilization of topographically appropriate inputs. The density of synaptic release sites within fluorescently labeled retinal terminals was counted in double-labeling experiments using confocal microscopy and antibodies against synaptophysin or synapsin-1. Chronic NMDAR blockade from birth increased retinal axon synapse density at postnatal days (P) 6, 8, and 10, suggesting that NMDAR currents reduce synapse density during the refinement period. With assay at P14, after focal arborization has been established, the effect disappeared. Conversely, chronic NMDA treatment, known to induce functional synaptic depression in the sSC, decreased retinocollicular synapse density at P14, but not earlier, during the refinement period (P8). Thus during the development of retinocollicular topographic order, there is a period when NMDAR activity predominantly eliminates retinal axon synapses. We were able to extend this period by using retinal lesions to reduce synaptic density in a defined zone. Synapse density on intact retinocollicular axons sprouting into this zone was increased by NMDAR blockade, even when examined at P14. Thus, the period of NMDAR-dependent synaptic destabilization is terminated by a factor related to the density and refinement of retinal arbors.

Indexed as

AnimalsAxonsNeuronal PlasticityRatsRats, Sprague-DawleyReceptors, N-Methyl-D-AspartateRetinaRetinal Ganglion CellsStatistics, NonparametricSuperior ColliculiSynapsesSynapsinsSynaptophysinVisual PathwaysReceptors, N-Methyl-D-AspartateSynapsinsSynaptophysin

Identifiers

PMID16374812
PMCPMC2605428
OpenAlexW2062923692

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.