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Research Library

A-Z Conditions  Participate in ORR

Cannabidivarin is anticonvulsant in mouse and rat

  • Journal : British Journal of Pharmacology
  • Publication Year : 2012
  • Authors : A. J. Hill, M. S. Mercier, T. D. M. Hill, S. E. Glyn, N. A. Jones, Y. Yamasaki, T. Futamura, M. Duncan, C. G. Stott, G. J. Stephens, C. M. Williams, & B. J. Whalley

BACKGROUND AND PURPOSE Phytocannabinoids in Cannabis sativa have diverse pharmacological targets extending beyond cannabinoid receptors and several exert notable anticonvulsant effects. For the first time, we investigated the anticonvulsant profile of the phytocannabinoid cannabidivarin (CBDV) in vitro and in in vivo seizure models.

EXPERIMENTAL APPROACH The effect of CBDV (1–100 mM) on epileptiform local field potentials (LFPs) induced in rat hippocampal brain slices by 4-aminopyridine (4-AP) application or Mg2+ -free conditions was assessed by in vitro multi-electrode array recordings. Additionally, the anticonvulsant profile of CBDV (50–200 mg·kg-1 ) in vivo was investigated in four rodent seizure models: maximal electroshock (mES) and audiogenic seizures in mice, and pentylenetetrazole (PTZ) and pilocarpine-induced seizures in rats. The effects of CBDV in combination with commonly used antiepileptic drugs on rat seizures were investigated. Finally, the motor side effect profile of CBDV was investigated using static beam and grip strength assays.

KEY RESULTS CBDV significantly attenuated status epilepticus-like epileptiform LFPs induced by 4-AP and Mg2+ -free conditions. CBDV had significant anticonvulsant effects on the mES (100 mg·kg-1 ), audiogenic (50 mg·kg-1 ) and PTZ-induced seizures (100 mg·kg-1 ). CBDV (200 mg·kg-1 ) alone had no effect against pilocarpine-induced seizures, but significantly attenuated these seizures when administered with valproate or phenobarbital at this dose. CBDV had no effect on motor function.

CONCLUSIONS AND IMPLICATIONS These results indicate that CBDV is an effective anticonvulsant in a broad range of seizure models. Also it did not significantly affect normal motor function and, therefore, merits further investigation as a novel anti-epileptic in chronic epilepsy models.

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Conditions:

  • Epilepsy

Research Information:

Research Keywords:

  • Cannabidivarin (CBDV), Cannabinoid/s, Epilepsy, hippocampus, seizure, side effects

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