Effect of combined dopaminergic and GABA-ergic stimulation on ouabain-induced epileptiform activity.
Epilepsia, 1977/12;18(4):417-23.
PMID: 201458
Impact factor: 6.74
Abstract
In this study we tested a hypothesis that dopamine and GABA receptor-stimulating agents given together might mutually potentiate their anticonvulsant activities. To test this hypothesis, experiments were performed on free-moving rabbits with epileptiform activity evoked by cortical application of ouabain. After combined treatment with apomorphine and GHBA 3 out of 6 animals displayed no EEG epileptiform activity, and in the remaining 3 rabbits this activity was greatly reduced. A combined pretreatment with apomorphine and GHBA abolished epileptiform EEG activity during the first hour and shortened it during the second hour, but not significantly. Apomorphine given together with amino-oxyacetic acid before ouabain completely abolished the epileptiform activity in 4 out of 6 animals. In the remaining 2 rabbits the latency of ouabain affect was prolonged, the epileptiform activity during the first hour was abolished, and it was markedly decreased during the next 2 hr (significantly from controls or groups receiving apomorphine or amino-oxyacetic acid). Phenytoin was less potent than apomorphine with GHBA or apomorphine given together with AOAA. The animals' behavior was observed.
MeSH terms
Aminooxyacetic Acid; Animals; Apomorphine; Cerebral Cortex; Drug Combinations; Drug Synergism; Electroencephalography; Hydroxybutyrates; Male; Ouabain; Phenytoin; Rabbits; Receptors, Dopamine; Receptors, Neurotransmitter; Seizures; gamma-Aminobutyric Acid
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