Abstract

Sprague-Dawley rats with interictal and ictal spike activity induced by intraperitoneally injected isoniazid (INH) were treated, 5 min before or 30 min later, with liposome-entrapped gamma-aminobutyric acid (GABA) (LEG) or GABA or phosphatidylserine. Crossover injections were given in random sequence and INH alone ws also injected in every animal as a control. LEG inhibited either seizures or interictal spikes in both groups. No decrease of epileptogenic activity was seen after GABA or phosphatidylserine treatment alone. It is suggested that LEG could contribute to the reconstitution of the GABA pool decreased by INH.

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