Influence of LY 300164, an AMPA/kainate receptor antagonist upon the anticonvulsant action of antiepileptic drugs against aminophylline-induced seizures in mice.
LY 300164 [7-acetyl-3-(4-aminophenyl)-8,9-dihydro-8-methyl-7H-1,3-dioxazolo[4,5-h][2,3]-benzodiazepine], a novel AMPA/kainate receptor antagonist, administered intraperitoneally protected mice against aminophylline-induced seizures. At doses up to 0.5 mg/kg, which did not significantly affect the convulsant activity of aminophylline, it potentiated the protective activity of diazepam. On the other hand, LY 300164 used at the lowest protective dose of 1.0 mg/kg enhanced anticonvulsant activity of all antiepileptic drugs tested in this seizure model. However, LY 300164 neither alone nor combined with antiepileptic drugs, reduced aminophylline-induced mortality.
Swiader
Mariusz
M
Department of Pharmacology and Toxicology, Medical University, Jaczewskiego 8, PL 20-090 Lublin, Poland.
Kuźniar
Hubert
H
Kleinrok
Zdzisław
Z
Czuczwar
Stanisław J
SJ
D000628:Aminophylline / Q000633:toxicity*; D000818:Animals; D000927:Anticonvulsants / Q000494:pharmacology / Q000627:therapeutic use*; D001569:Benzodiazepines / Q000494:pharmacology / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004357:Drug Synergism; D018691:Excitatory Amino Acid Antagonists / Q000494:pharmacology / Q000627:therapeutic use*; D005260:Female; D051379:Mice; D018091:Receptors, AMPA / Q000037:antagonists & inhibitors; D018092:Kainic Acid Receptors / Q000037:antagonists & inhibitors; D012640:Seizures / Q000139:chemically induced / Q000517:prevention & control*
D000628:Aminophylline; D000927:Anticonvulsants; D001569:Benzodiazepines; D018691:Excitatory Amino Acid Antagonists; D018091:Receptors, AMPA; D018092:Kainic Acid Receptors; C085266:talampanel