title: [Pharmacological studies on Y-8894. (III). Its effect on the abnormal electrocorticogram induced by destruction of the internal capsule].
abstract: The effect of Y-8894 on the abnormal electrocorticogram (ECoG) of alcuronium-immobilized rats, induced by destruction of the internal capsule with heat, was compared with that produced by imipramine, amantadine and Ca-hopantenate. ECoG power in the delta + theta (1-7 Hz), alpha (7.5-12.5 Hz) and beta (13-30 Hz) bands was used as an index. Delta + theta power increased following destruction of the internal capsule with heat. The increased delta + theta power (abnormal ECoG) lasted for 60 min following the injection of saline at 60 degrees C for 3 min. Y-8894 (0.1-1 mg/kg, i.v.) apparently improved the abnormal ECoG dose-dependently by significantly reducing the increased delta + theta power. Similar results were obtained with amantadine (10 mg/kg, i.v.), but its potency was weaker than that of Y-8894. Imipramine (1 mg/kg, i.v.) and Ca-hopantenate (30 mg/kg, i.v.), however, both failed to modify the abnormal ECoG. All drugs, except Ca-hopantenate, decreased the magnitudes of the alpha and beta bands. The above results suggest that Y-8894 may be effective in ameliorating cerebral dysfunction induced experimentally by the lesion of the internal capsule.
mesh_terms: D000547:Amantadine / Q000494:pharmacology; D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology; D003700:Delta Rhythm; D004569:Electroencephalography; D007099:Imipramine / Q000494:pharmacology; D008297:Male; D009025:Morpholines / Q000494:pharmacology*; D010205:Pantothenic Acid / Q000031:analogs & derivatives / Q000494:pharmacology; D051381:Rats; D011917:Rats, Inbred Lew; D013826:Theta Rhythm; D005680:gamma-Aminobutyric Acid / Q000031:analogs & derivatives / Q000494:pharmacology
chemical_list: D009025:Morpholines; C016030:pantogab; D010205:Pantothenic Acid; D005680:gamma-Aminobutyric Acid; C045330:sufoxazine; D000547:Amantadine; D007099:Imipramine