Evidence map›Paper›PMID 26452489›Full record

ArticlePurinergic signalling2015

Adenosine A2A receptor activation is determinant for BDNF actions upon GABA and glutamate release from rat hippocampal synaptosomes.

Sandra Henriques Vaz, Sofia Rapaz Lérias, Sara Parreira, Maria José Diógenes, Ana Maria Sebastião

Abstract read
In one paragraph

Article in Purinergic signalling, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.8field-weighted citation impact, top 32% 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

17 citing papers in PubMed, 32 citations in OpenAlex.

  1. Article
  2. Upregulation of adenosine AMolecular psychiatry · 2025
    Article
  3. A small TAT-TrkB peptide prevents BDNF receptor cleavage and restores synaptic physiology in Alzheimer's disease.Molecular therapy : the journal of the American Society of Gene Therapy · 2024
    Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. A maestro role of adenosine APurinergic signalling · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Neuronal adenosine APurinergic signalling · 2018
    Article
  15. Article
  16. Article
  17. 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

5 authors at 1 institution in 1 country.

Sandra Henriques VazInstituto de Medicina Molecular, Faculty of Medicine and Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Av. Prof. Egas Moniz, Ed. Egas Moniz, Piso 1B, Lisbon, 1649-028, Portugal. svaz@medicina.ulisboa.pt.
Sofia Rapaz LériasInstituto de Medicina Molecular, Faculty of Medicine and Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Av. Prof. Egas Moniz, Ed. Egas Moniz, Piso 1B, Lisbon, 1649-028, Portugal.
Sara ParreiraInstituto de Medicina Molecular, Faculty of Medicine and Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Av. Prof. Egas Moniz, Ed. Egas Moniz, Piso 1B, Lisbon, 1649-028, Portugal.
Maria José DiógenesInstituto de Medicina Molecular, Faculty of Medicine and Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Av. Prof. Egas Moniz, Ed. Egas Moniz, Piso 1B, Lisbon, 1649-028, Portugal.
Ana Maria SebastiãoInstituto de Medicina Molecular, Faculty of Medicine and Institute of Pharmacology and Neurosciences, Faculty of Medicine, University of Lisbon, Av. Prof. Egas Moniz, Ed. Egas Moniz, Piso 1B, Lisbon, 1649-028, Portugal.
University of Lisbon · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Adenosine, through A(2A) receptor (A(2A)R) activation, can act as a metamodulator, controlling the actions of other modulators, as brain-derived neurotrophic factor (BDNF). Most of the metamodulatory actions of adenosine in the hippocampus have been evaluated in excitatory synapses. However, adenosine and BDNF can also influence GABAergic transmission. We thus evaluated the role of A(2A)R on the modulatory effect of BDNF upon glutamate and GABA release from isolated hippocampal nerve terminals (synaptosomes). BDNF (30 ng/ml) enhanced K(+)-evoked [(3)H]glutamate release and inhibited the K(+)-evoked [(3)H]GABA release from synaptosomes. The effect of BDNF on both glutamate and GABA release requires tonic activation of adenosine A(2A)R since for both neurotransmitters, the BDNF action was blocked by the A(2A)R antagonist SCH 58261 (50 nM). In the presence of the A(2A)R agonist, CGS21680 (30 nM), the effect of BDNF on either glutamate or GABA release was, however, not potentiated. It is concluded that both the inhibitory actions of BDNF on GABA release as well as the facilitatory action of the neurotrophin on glutamate release are dependent on the activation of adenosine A(2A)R by endogenous adenosine. However, these actions could not be further enhanced by exogenous activation of A(2A)R.

Indexed as

AdenosineAdenosine A2 Receptor AgonistsAdenosine A2 Receptor AntagonistsAnimalsBrain-Derived Neurotrophic Factorgamma-Aminobutyric AcidGlutamic AcidHippocampusIn Vitro TechniquesPhenethylaminesPotassiumPyrimidinesRatsRats, WistarReceptor, Adenosine A2ASynaptosomes2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine5-amino-7-(2-phenylethyl)-2-(2-furyl)pyrazolo(4,3-e)-1,2,4-triazolo(1,5-c)pyrimidineAdenosineAdenosine A2 Receptor AgonistsAdenosine A2 Receptor AntagonistsBrain-Derived Neurotrophic Factorgamma-Aminobutyric AcidGlutamic AcidPhenethylaminesPotassiumPyrimidinesReceptor, Adenosine A2ATriazolesAdenosine A2A receptorsBrain-derived neurotrophic factorGABA releaseGlutamate releaseHippocampusSynaptosomes

Identifiers

PMID26452489
PMCPMC4648793
OpenAlexW1839745439

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.