Objective: To investigate the effect of microinjection of saline into unilateral central piriform cortex (cPC) on the generalized seizures in amygdaloid-kindled rats.
Methods: Different volumes of saline were injected into the right or left cPC of amygdaloid-kindled rats, and its effect on generalized seizures was observed.
Result: Saline injection at different volumes 0.1 microl, 0.25 microl and 1 microl) significantly decreased the incidence and duration of generalized seizures (P<0.05), the anticonvulsant effect lasted for up to 10 d. In addition, 10 min after ipsilateral injection of saline the generalized seizure thresholds were significantly increased; while this effect was observed 30 min later when contralateral injection was used.
Conclusion: Unilateral saline injection into cPC has a significant anticonvulsant effect, which might be used for treatment of human temporal lobe epilepsy in the future.