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Updated: Jul 12, 2026

Electroconvulsive Seizures in Rats and Fractionation of Their Hippocampi to Examine Seizure-induced Changes in Postsynaptic Density Proteins
Published on: August 15, 2017
[The effect of ethosuximide on epileptic after-discharges induced by thalamic stimulation in young laboratory rats]
D Maresová1, P Mares, M Langmeier
1Fyziologický ústav fakulty vseobecného lékarství Univerzity Karlovy, Praha.
Abstract:
An influence of ethosuximide on thalamically induced epileptic afterdischarges was studied in 47 rats aged 12 and 18 days. An afterdischarge formed by spike-and-wave rhythm was induced only in 18-day-old rats. It exhibited a tendency to progressive prolongation with repeated stimulations (with 15 min intervals). Ethosuximide in a dose of 125 mg/kg i.p. immediately after the first afterdischarge did not change the duration of subsequent afterdischarges. The second type of epileptic afterdischarge formed by spikes and/or serrated waves could be induced in both age groups studied. Ethosuximide even worsened the tendency to progression of epileptic afterdischarges in 12- as well as 18-day-old animals. Ethosuximide did not exhibit an anticonvulsant action against the spike-and-wave afterdischarge in 18-day-old rats. On the contrary, it aggravated the course of progressive changes with repeated stimulations in both age groups.
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