Cited by 97Cannabis and Cannabinoid ResearchMemory and Neural MechanismsNeurotransmitter Receptor Influence on Behavior

Cannabidiol injected into the bed nucleus of the stria terminalis reduces the expression of contextual fear conditioning via 5-HT 1A receptors

Gomes, Felipe V, Reis, Daniel G, Alves, Fernando HF, Corrêa, Fernando MA, Guimarães, Francisco S, Resstel, Leonardo BM·2012·Journal of Psychopharmacology

Abstract

Systemic administration of cannabidiol (CBD) attenuates cardiovascular and behavioral changes induced by re-exposure to a context that had been previously paired with footshocks. Previous results from our group using cFos immunohistochemistry suggested that the bed nucleus of the stria terminalis (BNST) is involved in this effect. The mechanisms of CBD effects are still poorly understood, but could involve 5-HT(1A) receptor activation. Thus, the present work investigated if CBD administration into the BNST would attenuate the expression of contextual fear conditioning and if this effect would involve the activation of 5-HT(1A) receptors. Male Wistar rats with cannulae bilaterally implanted into the BNST were submitted to a 10 min conditioning session (six footshocks, 1.5 mA/3 s). Twenty-four hours later freezing and cardiovascular responses (mean arterial pressure and heart rate) to the conditioning box were measured for 10 min. CBD (15, 30 or 60 nmol) or vehicle was administered 10 min before the re-exposure to the aversive context. The second experiment was similar to the first one except that animals received microinjections of the 5-HT(1A) receptor antagonist WAY100635 (0.37 nmol) 5 min before CBD (30 nmol) treatment. The results showed that CBD (30 and 60 nmol) treatment significantly reduced the freezing and attenuated the cardiovascular responses induced by re-exposure to the aversive context. Moreover, WAY100635 by itself did not change the cardiovascular and behavioral response to context, but blocked the CBD effects. These results suggest that CBD can act in the BNST to attenuate aversive conditioning responses and this effect seems to involve 5-HT(1A) receptor-mediated neurotransmission.

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Crossref · 10.1177/0269881110389095

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Authors
Gomes, F. V., Reis, D. G., Alves, F. H., Corrêa, F. M., Guimarães, F. S., & Resstel, L. B.
Affiliations
  • Universidade de São Paulo (BR)
  • Department of Pharmacology, School of Medicine, University of São Paulo, Ribeirão Preto, SP, Brazil
Venue
Journal of Psychopharmacology
Published
2010-12-08
Volume
26
Issue
1
Pages
104-113
ISSN
  • 0269-8811 (ISSN-L)
  • 1461-7285
OpenAlex
W1999133841
Cited by
97
References
90
Citations by year
2026: 3 · 2025: 4 · 2024: 7 · 2023: 9 · 2022: 2 · 2021: 10 · 2020: 9 · 2019: 7 · 2018: 4 · 2017: 9 · 2016: 10 · 2015: 6 · 2014: 1 · 2013: 7 · 2012: 7
FWCI
3.78
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Psychopharmacology (publishedVersion)
  • PubMed (publishedVersion)
  • Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico) (publishedVersion)
Funders
  • Fundação de Amparo à Pesquisa do Estado de São Paulo
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
cannabidiol, bed nucleus of the stria terminalis, contextual fear conditioning, 5-HT1A receptor, WAY-100635, freezing behavior, cardiovascular response, mean arterial pressure, heart rate, aversive conditioning, microinjection
MeSH terms
Animals, Behavior, Animal, Cannabidiol, Cardiovascular Physiological Phenomena, Conditioning, Psychological, Fear, Male, Synaptic Transmission, Piperazines, Pyridines, Septal Nuclei, Rats, Wistar, Receptor, Serotonin, 5-HT1A, Rats, Serotonin 5-HT1 Receptor Antagonists

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