Cited by 45Adenosine and Purinergic SignalingTreatment of Major DepressionNeurotransmitter Receptor Influence on Behavior

Antidepressant-like effect induced by P2X7 receptor blockade in FSL rats is associated with BDNF signalling activation

Ribeiro, Deidiane E, Müller, Heidi K, Elfving, Betina, Eskelund, Amanda, Joca, Samia RL, Wegener, Gregers·2019·Journal of Psychopharmacology

Abstract

Background: P2X7 receptors (P2X7R) are ligand-gated ion channels activated by adenosine 5’-triphosphate (ATP), which are involved in processes that are dysfunctional in stress response and depression, such as neurotransmitter release, and neuroimmune response. Genetic and pharmacological inhibition of the P2X7R induce antidepressant-like effects in animals exposed to stress. However, the effect of P2X7R antagonism in an animal model of depression based on selective breeding has not previously been studied, and the mechanism underling the antidepressant-like effect induced by the P2X7R blockade remains unknown. Aims: The present study aimed to: (1) determine whether P2X7R blockade induces antidepressant-like effects in the Flinders Sensitive Line (FSL) rats and, (2) investigate whether brain-derived neurotrophic factor (BDNF) signalling in the frontal cortex and hippocampus is involved in this effect. Methods: FSL and the control Flinders Resistant Line (FRL) rats were treated with vehicle or the P2X7R antagonist A-804598 (3, 10 or 30 mg/Kg/day) for 1 or 7 days before being exposed to the forced swim test (FST). After the behavioural test, animals were decapitated, their brains were removed and the frontal cortex, ventral and dorsal hippocampus were dissected for BDNF signalling analysis. Results: We found that repeated treatment with A-804598 (30 mg/Kg) reduced the immobility time in the FST and activated the BDNF signalling in the ventral hippocampus of FSL rats. Conclusions: P2X7R blockade induces an antidepressant-like effect associated with increased levels of BDNF-AKT-p70 S6 kinase in the ventral hippocampus, which may be mediated by tropomyosin-related kinase B (TRKB) receptor activation supporting the notion of P2X7R antagonism as a potential new antidepressant strategy.

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Crossref · 10.1177/0269881119872173

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  • Treatment with a selective P2X7 receptor antagonist (A-804598) induced antidepressant-like effect associated with inflammasome stimulation and BDNF signaling activation in rodent hippocampus.

    “Moreover, the treatment with a selective P2X7 receptor antagonist (A-804598) induced antidepressant-like effect associated with inflammasome stimulation [147] and BDNF signaling activation [148] in rodent hippocampus.”

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Authors
Ribeiro, D. E., Müller, H. K., Elfving, B., Eskelund, A., Joca, S. R., & Wegener, G.
Affiliations
  • Universidade de São Paulo (BR)
  • Aarhus University (DK)
  • Department of Physics and Chemistry, School of Pharmaceutical Sciences of Ribeirão Preto - University of São Paulo, Ribeirão Preto, Brazil
Venue
Journal of Psychopharmacology
Published
2019-09-17
Volume
33
Issue
11
Pages
1436-1446
ISSN
  • 0269-8811 (ISSN-L)
  • 1461-7285
OpenAlex
W2974247326
Cited by
45
References
77
Citations by year
2026: 5 · 2025: 8 · 2024: 7 · 2023: 6 · 2022: 8 · 2021: 7 · 2020: 3 · 2019: 1
FWCI
3.16
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • fundação de amparo à pesquisa do estado de são paulo (2013/01737-7)
  • aarhus universitets forskningsfond (eMOOD)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
P2X7 receptor, antidepressant-like effects, depression, Flinders Sensitive Line rats, BDNF signalling, TrkB receptor, ventral hippocampus, frontal cortex, forced swim test, neuroimmune response, stress response
MeSH terms
Animals, Antidepressive Agents, Behavior, Animal, Depression, Disease Models, Animal, Guanidines, Male, Quinolines, Stress, Psychological, Swimming, Time Factors, Brain-Derived Neurotrophic Factor, Maximum Tolerated Dose, Receptor, trkB, Rats, Receptors, Purinergic P2X7, Purinergic P2X Receptor Antagonists

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