Cannabinoid receptor 1/2 double-knockout mice develop epilepsy.
Epilepsia
; 58(12): e162-e166, 2017 12.
Article
em En
| MEDLINE
| ID: mdl-29105060
ABSTRACT
The endocannabinoid system has gained attention as an important modulator of activity in the central nervous system. Initial studies focused on cannabinoid receptor 1 (CB1), which is widely expressed in the brain, but recent work also implicates cannabinoid receptor 2 (CB2) in modulating neuronal activity. Both receptors are capable of reducing neuronal activity, generating interest in cannabinoid receptor agonists as potential anticonvulsants. CB1 (Cnr1) and CB2 (Cnr2) single-knockout mice have been generated, with the former showing heightened seizure sensitivity, but not overt seizures. Given overlapping and complementary functions of CB1 and CB2 receptors, we queried whether double-knockout mice would show an exacerbated neurological phenotype. Strikingly, 30% of double-knockout mice exhibited provoked behavioral seizures, and 80% were found to be epileptic following 24/7 video-electroencephalographic monitoring. Single-knockout animals did not exhibit seizures. These findings highlight the importance of the endocannabinoid system for maintaining network stability.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Receptor CB1 de Canabinoide
/
Receptor CB2 de Canabinoide
/
Epilepsia
Tipo de estudo:
Etiology_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article