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Aminophylline and CGS 8216 Reverse the Protective Action of Diazepam Against Electroconvulsions in Mice

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RÉSUMÉL'aminophylline (50 et 100 mg/kg) et le CGS 8216 (20 et 40 mg/kg) diminuaient le pouvoir anticonvulsif du diazepam (5 et 10 mg/kg) contre les crises induites par électrochoc. On doit souligner que l'aminophylline affectait peu l'action protectrice de 5 mg/kg de benzodiazépine alors qu'elle avait le même effet que le CGS 8216 sur une dose de 10 mg/kg de diazépam. Ceci suggère la participation d'une composante purinergique dans l'action anticonvulsive du diazépam. D'autre part l'utilisation de l'aminophylline chez les patients épileptiques souffrant d'asthme ne paraît pas justifiée.RESUMENLa aminofilina (50 y 100 mg/kg) y la CGS 8216 (20 y 40 mg/kg) disminuyeron la potencia anticonvulsiva del diazepán (5 y 10 mg/kg) contra los ataques inducidos por electroshock. Se debe hacer énfasis en el hecho de que la aminofilina afectó moderadamente la acción protectora de la benzodiazepina en la dosis de 5 mg/kg mientras que su potencia era equivalente a la CGS 8216 con respecto al diazepán en dosis de 10 mg/kg. Consecuentemente se sugiere la participación de un componente purinérgico en la acción anticonvulsiva del diazepán. Por otro lado, la utilización de aminofilina en pacientes epilépticos que sufren de asma no está justificada.ZUSAMMENFASSUNGAminophyllin (50 und 100 mg/kg) und CGS 8216 (20 und 40 mg/kg) vernindern die antikonvulsive Wirkung von Diazepam (5 und 10 mg/kg) gegenüber durch Elektroschock ausgelöste Krämpfe. Es sollte betont werden, daß Aminophyllin die Schutzwirkung von Benzodiazepin in einer Dosis von 5 mg/kg nur mäßig beeinflußt, während es gleichermaßen wirksam mit CGS 8216 hinsichtlich einer Diazepam‐Dosierung von 10 mg/kg Körpergewicht war. Somit wird eine Beteiligung purinergischer Komponenten bei der antikonvulsiven Wirkung des Diazepam vermutet. Andererseits scheînt die Verwendung von Aminophyllin bei epileptischen Patienten, die an Asthma leiden, nicht gerechtfertigt.Summary: Aminophylline (50 and 100 mg/kg) and CGS 8216 (20 and 40 mg/kg) decreased the anticonvulsant potency of diazepam (5 and 10 mg/kg) against electroshock‐induced seizures. It should be emphasized that aminophylline moderately affected the protective action of the benzodiazepine at a dose of 5 mg/kg, whereas it was equipotent with CGS 8216 with regard to diazepam at a dose of 10 mg/kg. Consequently, participation of a purinergic component in the anticonvulsant action of diazepam is suggested. On the other hand, the use of aminophylline in epileptic patients suffering from asthma seems unjustified.
Title: Aminophylline and CGS 8216 Reverse the Protective Action of Diazepam Against Electroconvulsions in Mice
Description:
RÉSUMÉL'aminophylline (50 et 100 mg/kg) et le CGS 8216 (20 et 40 mg/kg) diminuaient le pouvoir anticonvulsif du diazepam (5 et 10 mg/kg) contre les crises induites par électrochoc.
On doit souligner que l'aminophylline affectait peu l'action protectrice de 5 mg/kg de benzodiazépine alors qu'elle avait le même effet que le CGS 8216 sur une dose de 10 mg/kg de diazépam.
Ceci suggère la participation d'une composante purinergique dans l'action anticonvulsive du diazépam.
D'autre part l'utilisation de l'aminophylline chez les patients épileptiques souffrant d'asthme ne paraît pas justifiée.
RESUMENLa aminofilina (50 y 100 mg/kg) y la CGS 8216 (20 y 40 mg/kg) disminuyeron la potencia anticonvulsiva del diazepán (5 y 10 mg/kg) contra los ataques inducidos por electroshock.
Se debe hacer énfasis en el hecho de que la aminofilina afectó moderadamente la acción protectora de la benzodiazepina en la dosis de 5 mg/kg mientras que su potencia era equivalente a la CGS 8216 con respecto al diazepán en dosis de 10 mg/kg.
Consecuentemente se sugiere la participación de un componente purinérgico en la acción anticonvulsiva del diazepán.
Por otro lado, la utilización de aminofilina en pacientes epilépticos que sufren de asma no está justificada.
ZUSAMMENFASSUNGAminophyllin (50 und 100 mg/kg) und CGS 8216 (20 und 40 mg/kg) vernindern die antikonvulsive Wirkung von Diazepam (5 und 10 mg/kg) gegenüber durch Elektroschock ausgelöste Krämpfe.
Es sollte betont werden, daß Aminophyllin die Schutzwirkung von Benzodiazepin in einer Dosis von 5 mg/kg nur mäßig beeinflußt, während es gleichermaßen wirksam mit CGS 8216 hinsichtlich einer Diazepam‐Dosierung von 10 mg/kg Körpergewicht war.
Somit wird eine Beteiligung purinergischer Komponenten bei der antikonvulsiven Wirkung des Diazepam vermutet.
Andererseits scheînt die Verwendung von Aminophyllin bei epileptischen Patienten, die an Asthma leiden, nicht gerechtfertigt.
Summary: Aminophylline (50 and 100 mg/kg) and CGS 8216 (20 and 40 mg/kg) decreased the anticonvulsant potency of diazepam (5 and 10 mg/kg) against electroshock‐induced seizures.
It should be emphasized that aminophylline moderately affected the protective action of the benzodiazepine at a dose of 5 mg/kg, whereas it was equipotent with CGS 8216 with regard to diazepam at a dose of 10 mg/kg.
Consequently, participation of a purinergic component in the anticonvulsant action of diazepam is suggested.
On the other hand, the use of aminophylline in epileptic patients suffering from asthma seems unjustified.

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