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Tytuł oryginału: Influence of several convulsants on the protective activity of a non-competitive AMPA/kainate antagonist, LY 300164, and lamotrigine against maximal electroshock in mice.
Autorzy: Borowicz K. K., Świąder M., Zgrajka W., Sawulski C., Turski W. A., Czuczwar S[tanisław] J.
Źródło: J. Physiol. Pharmacol. 2002: 53 (4 p. 2) s.859-869, tab., bibliogr. 32 poz.
Sygnatura GBL: 302,092

Hasła klasyfikacyjne GBL:
  • immunologia
  • farmacja
  • pulmonologia
  • neurologia

    Typ dokumentu:
  • praca doświadczalna
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • zwierzęta
  • myszy
  • płeć męska

    Streszczenie angielskie: Aminophyline (50-100 mg/kg) and strychnine (0.125-0.5 mg/kg) significantly raised the ED50 values of LY 300164 against maximal electroshock in mice, from 4 to 8 mg/kg (aminophylline 100 mg/kg) and from 3.6 to 11.5 mg/kg (strychnine 0.5 mg/kg). Also, aminophylline (25-50 mg/kg) and strychnine (O.125-0.25 mg/kg) increased the ED50 value of lamotrigine in this test, for instance from 5.5 to 8.0 mg/kg (aminophylline 50 mg/kg) and from 5.2 to 8.9 mg/kg (strychnine 0.25 mg/kg). Moreover, the ED50s values of aminophylline and strychnine for the reduction of the anticonvulsant effect of LY 300164 (7 mg/kg, the dose equal to its ED97 value against maximal electroshock) were 79.9 and 0.2 mg/kg, respectively. The respective ED50 values for the inhibition of the antiseizure action of lamotrigine were 40.9 and 0.2 mg/kg. Neither bicuculline nor picrotoxin affected the protective action of LY 300164 or lamotrigine. Strychnine significantly lowered the plasma concertrations of LY 300164 and this my point to a pharmacokinetic mechanism of the observed interaction. Aminophylline did not affect the plasma concentrations of the studied anticonvulsant drugs and strychnine - that of lamotrigine, so a pharmacokinetic interaction does not seem probable. The present results indicate that the potential of aminophylline and strychnine to attenuate the anticonvulsant activity of conventional antiepileptics is extended to LY 300164 and lamotrigine.

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