Favorable adverse effect profile of brivaracetam vs levetiracetam in a preclinical model

Publication date: February 2018 Source:Epilepsy & Behavior, Volume 79 Author(s): Nathalie T. Sanon, Jonathan Gagné, Daniele C. Wolf, Soumia Aboulamer, Ciprian M. Bosoi, Alexe Simard, Estelle Messiet, Sébastien Desgent, Lionel Carmant Levetiracetam (LEV), and its newer selective analog brivaracetam (BRV), are two seizure medications that share an innovative mechanism of action targeting the Synaptic Vesicle Protein 2A (SV2A), altering neurotransmitter release and decreasing seizure frequency. Behavioral changes are the most significant adverse effects reported by patients taking LEV. We hypothesize that BRV, the more potent SV2A analog, could exert less behavioral side effects, as it requires lower doses than LEV. Using Kainic Acid (KA)-treated and control rats, we measured adverse behavioral effect profiles of LEV, BRV, or Saline, on social and nonsocial behaviors. Our data indicate that both tested drugs had no effect on locomotion, anxiety levels, fear learning, depression-like behavior, and memory retention in rats. However, when considering social interactions, we first confirmed the epilepsy-induced strong increase in aggressive behaviors and specific hippocampal neuronal loss. We furthermore observed, in Sham rats, that LEV-treated animals were 2 times faster to attack at first encounter, had 5 times more aggressive behaviors, and had significantly less social behaviors than control rats. In all circumstances, BRV rats behaved like Saline rats, sugg...
Source: Epilepsy and Behavior - Category: Neurology Source Type: research