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Considering the putative participation of N-methyl-D-aspartate (NMDA) receptors and the Na(+), K(+)-ATPase enzymes in the susceptibility to convulsions induced by the benzodiazepine inverse agonist methyl 6,7-dimethoxy-4-ethyl-β-carboline-3-carboxylate (DMCM), the present study sought to determine
The effects of the intraventricularly administered cations (Mn2+, Ca2+, Mg2+ and Li+) against the seizure induced by ouabain (3 microgram) were investigated. Mn2+, Ca2+ and Mg2+ caused definite sedation and decreased locomotor activity. But Li+ was without significant behavioral effect at the doses
The gross behavioural, electrocortical and neuropathological effects of kainate (10 mg/kg i.p,) and ouabain (1 micrograms, given into one dorsal hippocampus) were studied in rats. The effects of these treatments on nitric oxide synthase (NOS) activity in homogenates of hippocampus and cortex were
Epilepsy is one of the most prevalent neurological disorders worldwide, but its underlying mechanisms have not yet been clarified. Among the possible molecular mechanisms that underlie its occurrence are those that are responsible for the neuronal ionic gradient, including the transmembrane enzyme
Ouabain, an inhibitor of Na+ -K" -ATP'ase, has been administered intraventricularly to rats to study the effect of impairment of membrane transport mechanisms on the genesis of seizures. Running and leaping seizures occur rapidly after injection of ouabain in a low volume (10 microliter) when the
Phenytoin potentiated the convulsive actions of bicuculline and picrotoxin in mice, whereas the action of bemegride was neither potentiated nor antagonized. Seizures induced by intracerebral injection of ouabain were antagonized by phenytoin, as well as by phenobarbital, chlordiazepoxide and
Intrahippocampal injection of 1 nmol ouabain, a sodium/potassium (Na+,K(+)-)ATPase inhibitor, produced a necrotic lesion within 4 days, characterised by a massive invasion by foaming macrophages. A lower dose of ouabain (0.1 nmol) produced a more discrete lesion of all groups of neuronal perikarya
Convulsions induced in mice by intracerebral injection of L-glutamate were antagonized by phenytoin, phenobarbital, chlordiazepoxide and valproic acid. Trimethadione had only a small effect at the dose used, and ethosuximide was ineffective. The profile of interaction of glutamate with these