Effects of cannabidiol and diazepam on behavioral and cardiovascular responses induced by contextual conditioned fear in rats
Abstract
Cannabidiol (CBD) is a non-psychotomimetic compound from Cannabis sativa that induces anxiolytic-like effects similar to diazepam in animal models of innate aversive behavior. However, the effects of CBD contextual conditioned fear have not been studied. Therefore, the aim of this work was to compare the behavioral and cardiovascular effects of CBD and diazepam, a prototype anxiolytic, in animals submitted to a contextual conditioned fear paradigm. Male Wistar rats were submitted to a 10min conditioning session (six footshocks, 2.5 mA, 3s, delivered at pseudo-random intervals). The behavioral and cardiovascular responses to the context were measured 24h later in a 10 min test session. Diazepam (2.5 mg/kg), FG-7142 (8 mg/kg), a benzodiazepine inverse agonist, or CBD (10 mg/kg) were administered i.p. before the test session. Conditioned rats submitted to the aversive context exhibited more freezing behavior and a larger increase in blood pressure and heart rate as compared to non-conditioned animals. These effects were attenuated by CBD and diazepam in the conditioned animals. These drugs did not have any effect in non-conditioned rats. FG-7142 treatment failed to change the behavioral and cardiovascular responses to the aversive context. In conclusion, the results suggest that CBD has anxiolytic-like properties similar to those of diazepam in a rat model of conditioned fear to context.
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Systemic administration of CBD reduces conditioned contextual fear.
“reduces conditioned contextual fear (Resstel et al., 2006).”
From The endocannabinoid system as a target for novel anxiolytic drugs (2017) · cites this paper as Resstel et al., 2006
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- Authors
- Resstel, L. B. M., Joca, S. R. L., Moreira, F. A., Corrêa, F. M. A., & Guimarães, F. S.
- Affiliations
- Universidade de São Paulo (BR)
- Corresponding author
- Guimarães, Francisco S.
- Venue
- Behavioural Brain Research
- Publisher
- Elsevier BV
- Published
- 2006-09
- Volume
- 172
- Issue
- 2
- Pages
- 294-298
- ISSN
- 0166-4328 (ISSN-L)
- OpenAlex
- W2068728468
- Cited by
- 182
- References
- 53
- Citations by year
- 2026: 4 · 2025: 6 · 2024: 9 · 2023: 12 · 2022: 13 · 2021: 16 · 2020: 12 · 2019: 7 · 2018: 12 · 2017: 9 · 2016: 5 · 2015: 8 · 2014: 4 · 2013: 4 · 2012: 15
- FWCI
- 5.02
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Behavioural Brain Research (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
- Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plant Extracts Effects
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Keywords
- cannabidiol, diazepam, anxiolytic effects, cardiovascular response, blood pressure, heart rate, freezing behavior, benzodiazepine inverse agonist, FG 7142, cannabis
- MeSH terms
- Analysis of Variance, Animals, Association Learning, Blood Pressure, Cannabidiol, Carbolines, Conditioning, Classical, Diazepam, Environment, Fear, Heart Rate, Male, Anti-Anxiety Agents, Rats, Wistar, Freezing Reaction, Cataleptic, Rats
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