Background: Ethanol intake leads to cognitive deficits. Recent research demonstrated that a dysregulation of synaptic vesicle glycoprotein 2A (SV2A) expression seems to be linked to anxiety and memory disorders. Levetiracetam and brivaracetam are two antiseizure drugs that affect the SV2A protein. This study aimed to assess the impact of these drugs on associative learning and anxiety-like behaviors in ethanol-treated rats. Methods: Adult maleWistar rats (n = 64) were given brivaracetam or levetiracetam via i.g. for three weeks at doses of 300 mg/kg or 6 mg/kg, respectively. Ethanol was administered as a 20% solution twice a day, via i.g., at a morning dose of 1.5 g/kg b.w. and an afternoon dose of 3.5 g/kg b.w. Additionally, 5% ethanol was available ad libitum between 4:00 p.m. and 8:00 a.m. Associative learning was evaluated using the passive avoidance test during the alcohol administration period, as well as the contextual fear conditioning and cued fear conditioning tests during the withdrawal period. The level of anxiety was determined using the elevated plus maze test in withdrawal rats. Results: Ethanol consumption resulted in impaired associative memory, and its withdrawal was linked to increased anxiety levels. Levetiracetam enhanced memory performance in the passive avoidance test, but brivaracetam disturbed memory associated with unpleasant stimuli in the contextual fear conditioning. Additionally, withdrawal-induced disturbance of locomotor activity persisted, particularly in animals receiving levetiracetam in the elevated plus maze. Conclusions: Levetiracetam appears to provide certain beneficial effects, whereas brivaracetam may worsen memory disturbances in rats.
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