Evidence map›Paper›PMID 17215590›Full record

ArticleNeuro-Signals

Depression of glutamate and GABA release by presynaptic GABAB receptors in the entorhinal cortex in normal and chronically epileptic rats.

Sarah E Thompson, Goher Ayman, Gavin L Woodhall, Roland S G Jones

Open access · bronzeAbstract read
In one paragraph

Article in Neuro-Signals. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.9field-weighted citation impact, top 33% 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

16 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. CaInternational journal of molecular sciences · 2022
    Review
  3. Article
  4. Review
  5. Complex formation of APP with GABANature communications · 2019
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. The pilocarpine model of temporal lobe epilepsy.Journal of neuroscience methods · 2008
    Review
  16. Article
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

4 authors at 2 institutions in 1 country.

Sarah E ThompsonDepartment of Pharmacy and Pharmacology, University of Bath, Bath, UK.
Goher Ayman
Gavin L Woodhall
Roland S G Jones
University of Bath · GBAston University · GB

Funding

Wellcome Trust 067472
6 · The paper itself

Abstract

Presynaptic GABA(B) receptors (GABA(B)R) control glutamate and GABA release at many synapses in the nervous system. In the present study we used whole-cell patch-clamp recordings of spontaneous excitatory and inhibitory synaptic currents in the presence of TTX to monitor glutamate and GABA release from synapses in layer II and V of the rat entorhinal cortex (EC)in vitro. In both layers the release of both transmitters was reduced by application of GABA(B)R agonists. Quantitatively, the depression of GABA release in layer II and layer V, and of glutamate release in layer V was similar, but glutamate release in layer II was depressed to a greater extent. The data suggest that the same GABA(B)R may be present on both GABA and glutamate terminals in the EC, but that the heteroreceptor may show a greater level of expression in layer II. Studies with GABA(B)R antagonists suggested that neither the auto- nor the heteroreceptor was consistently tonically activated by ambient GABA in the presence of TTX. Studies in EC slices from rats made chronically epileptic using a pilocarpine model of temporal lobe epilepsy revealed a reduced effectiveness of both auto- and heteroreceptor function in both layers. This could suggest that enhanced glutamate and GABA release in the EC may be associated with the development of the epileptic condition.

Indexed as

AnimalsAutoreceptorsChronic DiseaseConvulsantsDisease Models, AnimalEntorhinal CortexEpilepsy, Temporal LobeExcitatory Postsynaptic PotentialsGABA AgonistsGABA-B Receptor Agonistsgamma-Aminobutyric AcidGlutamic AcidInhibitory Postsynaptic PotentialsLong-Term Synaptic DepressionMaleNeural InhibitionAutoreceptorsConvulsantsGABA AgonistsGABA-B Receptor Agonistsgamma-Aminobutyric AcidGlutamic AcidReceptors, GABA-BSodium Channel Blockers

Identifiers

PMID17215590
PMCPMC2504722
OpenAlexW1975817203

What OpenQuestion 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 OpenQuestion graph.