Abstract

Intracerebral injection of L-acetylcarnitine in rats induced interictal and ictal epileptic phenomena with immediate onset, lasting up to 4 h. Pretreatment with systemic atropine prevents all epileptiform phenomena. Local injection of muscimol and THIP abolish ictal events, but not single spikes. L-carnitine induced only ictal discharges with a latency of 40–90 min. Acetylcarnitine epileptogenic properties are probably related to muscarinic agonism. The transition from interictal to ictal events may involve failure of GABAergic mechanisms.

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