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Cannabidiol inhibitory effect on marble-burying behaviour: involvement of CB1 receptors.
Casarotto, Plinio C; Gomes, Felipe V; Resstel, Leonardo B M; Guimarães, Francisco S.
Afiliação
  • Casarotto PC; Department of Pharmacology, School of Medicine, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, SP, Brazil. pcasarotto@usp.br
Behav Pharmacol ; 21(4): 353-8, 2010 Jul.
Article em En | MEDLINE | ID: mdl-20695034
Cannabidiol (CBD) is a major non-psychotomimetic component of Cannabis sativa that has been shown to have an anxiolytic effect in human and animal models. Earlier studies suggest that these effects involve facilitation of serotonin, a neurotransmitter that has also been related to obsessive-compulsive disorder. On the basis of this evidence, this study investigated the effects of CBD in C57BL/6J mice submitted to the marble-burying test (MBT), an animal model proposed to reflect compulsive behaviour. CBD (15, 30 and 60 mg/kg) induced a significant decrease in the number of buried marbles compared with controls (34, 41 and 48%, respectively). A similar, although larger, decrease was also found after the serotonin selective reuptake inhibitor paroxetine (10 mg/kg, 77% decrease) and the benzodiazepine diazepam (2.5 mg/kg, 84% decrease). The effect of CBD (30 mg/kg) was still significant after 7 days of daily repeated administration, whereas the effect of diazepam disappeared. Pretreatment with WAY100635 (3 mg/kg), a 5HT1A receptor antagonist, prevented the effects of paroxetine but failed to alter those of CBD. These latter effects, however, were prevented by pretreatment with the CB1 receptor antagonist AM251 (1 mg/kg). These results indicated that CBD and paroxetine decrease the number of buried marbles in the MBT through distinct pharmacological mechanisms. They also suggest a potential role of drugs acting on the cannabinoid system in modulating compulsive behaviour.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Comportamento Animal / Canabidiol / Receptor CB1 de Canabinoide Limite: Animals Idioma: En Revista: Behav Pharmacol Assunto da revista: CIENCIAS DO COMPORTAMENTO / FARMACOLOGIA Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Comportamento Animal / Canabidiol / Receptor CB1 de Canabinoide Limite: Animals Idioma: En Revista: Behav Pharmacol Assunto da revista: CIENCIAS DO COMPORTAMENTO / FARMACOLOGIA Ano de publicação: 2010 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido