Evidence map›Paper›PMID 15384067›Full record

ArticleThe Journal of comparative neurology2004

Synaptic and extrasynaptic localization of brain-derived neurotrophic factor and the tyrosine kinase B receptor in cultured hippocampal neurons.

Catherine Croft Swanwick, Madaline B Harrison, Jaideep Kapur

Open access · greenAbstract read
In one paragraph

Article in The Journal of comparative neurology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
1.3field-weighted citation impact, top 24% 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

33 citing papers in PubMed, 54 citations in OpenAlex.

  1. Brain-derived neurotrophic factor scales presynaptic calcium transients to modulate excitatory neurotransmission.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  12. Cell type-dependent trafficking of neuropeptide Y-containing dense core granules in CNS neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2011
    Article
  13. TrkB signaling in parvalbumin-positive interneurons is critical for gamma-band network synchronization in hippocampus.Proceedings of the National Academy of Sciences of the United States of America · 2011
    Article
  14. Ethanol alters BDNF-induced Rho GTPase activation in axonal growth cones.Alcoholism, clinical and experimental research · 2011
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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

3 authors at 1 institution in 1 country.

Catherine Croft SwanwickNeuroscience Graduate Program, University of Virginia, Charlottesville, Virginia 22908, USA.
Madaline B Harrison
Jaideep Kapur
University of Virginia · US

Funding

TREATMENT OF STATUS EPILEPTICUSR01NS040337 · NINDS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI KAPUR, JAIDEEP · 2000 to 2021
$5.0M
Neurosteroid Regulation of SeizuresR01NS044370 · NINDS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI KAPUR, JAIDEEP · 2003 to 2017
$4.1M
BDNF and Synaptic Plasticity in Levodopa SensitizationF31NS043831 · NINDS · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI SWANWICK, CATHERINE CROFT · 2002 to 2004
$77k
NINDS NIH HHS F31 NS043831NINDS NIH HHS R01 NS040337NINDS NIH HHS R01 NS044370
6 · The paper itself

Abstract

Brain-derived neurotrophic factor (BDNF) regulates synapses, but the distribution of BDNF and its receptor TrkB relative to the location of glutamatergic and gamma-aminobutyric acidergic (GABAergic) synapses is presently unknown. Immunocytochemistry was performed in primary hippocampal neuron cultures to determine whether BDNF and TrkB are preferentially localized to excitatory or inhibitory markers at 7, 14, and 21 days in vitro (DIV). Glutamatergic sites were localized with vesicular glutamate transporter type 1 (VGLUT1) as presynaptic marker and the NR1 subunit of the NMDA receptor and the GluR1 subunit of the AMPA receptor as receptor markers. GABAergic sites were labeled with the 65-kDa isoform of glutamic acid decarboxylase (GAD-65) as presynaptic marker and the gamma2 subunit of the GABAA receptor as receptor marker. During development, <30% of BDNF punctae and TrkB clusters were localized to glutamatergic and GABAergic markers. Because their rates of colocalization did not change from 7 to 21 DIV, this study details the distribution of BDNF and TrkB at 14 DIV. BDNF was preferentially colocalized with glutamatergic markers VGLUT1 and NR1 ( approximately 30% each). TrkB was also relatively highly colocalized with VGLUT1 and NR1 ( approximately 20% each) but was additionally highly colocalized with GABAergic markers GAD-65 ( approximately 20%) and gamma2 ( approximately 30%). NR1 clusters colocalized with BDNF puncta and TrkB clusters were mostly extrasynaptic, as were gamma2 clusters colocalized with TrkB clusters. These results show that, whereas most BDNF and TrkB protein is extrasynaptic, BDNF is preferentially associated with excitatory markers and that TrkB is associated equally with excitatory and inhibitory markers.

Indexed as

AnimalsBrain-Derived Neurotrophic FactorCells, CulturedHippocampusNeuronsRatsRats, Sprague-DawleyReceptor, trkBSynapsesBrain-Derived Neurotrophic FactorReceptor, trkB

Identifiers

PMID15384067
PMCPMC2892721
OpenAlexW2082815510

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.