Abstract
Our present research aimed to perform a detailed behavioral characterization of caffeine-induced seizure activity in zebrafish. Epileptic activity was observed by immersing individuals in different concentrations of caffeine solution at 250, 350, and 500 mg/l, respectively. Higher concentrations of caffeine rapidly induced intense behavioral activity resembling tonic seizures. Lower concentrations resulted in behavior that was less intense but sustained for longer periods. Significant attenuation of seizure severity was observed in zebrafish pretreated with the barbiturate phenobarbitone. Finally, brain caffeine levels were measured using HPLC-UV methodology in fish immersed in different concentrations of caffeine. Brain caffeine levels increased with higher concentrations of caffeine treatment; however, they were not significantly altered by pretreatment with phenobarbitone.
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