Evidence map›Paper›PMID 19665523›Full record

ArticleNeuroscience2009

Slow intracellular accumulation of GABA(A) receptor delta subunit is modulated by brain-derived neurotrophic factor.

S Joshi, J Kapur

Open access · greenAbstract read
In one paragraph

Article in Neuroscience, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
2.3field-weighted citation impact, top 13% 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

26 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
  2. Salicylate Induced GABAAR Internalization by Dopamine D1-Like Receptors Involving Protein Kinase C (PKC) in Spiral Ganglion Neurons.Medical science monitor : international medical journal of experimental and clinical research · 2021
    Article
  3. Article
  4. Neurosteroid regulation of GABABrain research · 2019
    Review
  5. α4βδ-GABAJournal of neuroscience research · 2018
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Regulation of GABAARs by phosphorylation.Advances in pharmacology (San Diego, Calif.) · 2015
    Review
  11. Pro-brain-derived neurotrophic factor inhibits GABAergic neurotransmission by activating endocytosis and repression of GABAA receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review
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 1 country.

S JoshiDepartment of Neurology, Box 800394, University of Virginia, Health Sciences Center, Charlottesville, VA 22908, USA.
J 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
Mechanism and Treatment of nerve agent-induced seizuresU01NS058204 · NINDS · UNIVERSITY OF VIRGINIA · PI KAPUR, JAIDEEP · 2006 to 2010
$2.3M
Progesterone receptor regulation of seizuresR01NS110863 · NINDS · UNIVERSITY OF VIRGINIA · PI JOSHI, SUCHITRA · 2019 to 2023
$1.8M
NINDS NIH HHS R01 NS 040337NINDS NIH HHS R01 NS040337NINDS NIH HHS R01 NS 044370NINDS NIH HHS R01 NS044370NINDS NIH HHS R01 NS110863NINDS NIH HHS U01 NS058204NINDS NIH HHS U01NS58204
6 · The paper itself

Abstract

GABA(A) receptors composed of the gamma2 and delta subunits have distinct properties, functions and subcellular localization, and pathological conditions differentially modulate their surface expression. Recent studies demonstrate that acute seizure activity accelerated trafficking of the gamma2 and beta2/3 subunits but not that of the delta subunit. The trafficking of the gamma2 and beta2/3 subunits is relatively well understood but that of the delta subunit has not been studied. We compared intracellular accumulation of the delta and gamma2 subunits in cultured hippocampal neurons using an antibody feeding technique. Intracellular accumulation of the delta subunit peaked between 3 and 6 h, whereas, maximum internalization of the gamma2 subunit took 30 min. In the organotypic hippocampal slice cultures internalization of the delta subunit studied using a biotinylation assay revealed highest accumulation between 3 and 5 h and that of the gamma2 subunit between 15 and 45 min. The surface half-life of the delta subunit was 171 min in cultured hippocampal neurons and 102 min in the organotypic hippocampal slice cultures. In the subsequent studies, internalization of the delta subunit was found to be dependent on network activity but independent of ligand-binding. Brain-derived neurotrophic factor (BDNF) reduced buildup of the delta subunit in the cytoplasmic compartments and increased its surface expression, and this BDNF effect was independent of network activity. BDNF effect was mediated by activation of TrkB receptors, PLCgamma and PKC. Increase in the basal PKC activity augmented cell surface stability of the delta subunit. These results suggest that rate of intracellular accumulation of the delta subunit was distinct and modulated by BDNF.

Indexed as

AnimalsBiotinylationBrain-Derived Neurotrophic FactorCell MembraneCells, CulturedCytoplasmHippocampusIntracellular SpaceIn Vitro TechniquesNeuronsPhospholipase C gammaProtein Kinase CRatsReceptors, GABA-AReceptor, trkBTime FactorsBrain-Derived Neurotrophic FactorPhospholipase C gammaProtein Kinase CReceptors, GABA-AReceptor, trkB

Identifiers

PMID19665523
PMCPMC2761981
OpenAlexW1969088566

What Socratic holds

Textmetadata
LicenceTDM
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 Socratic graph.