|Titolo:||Evidence for an involvement of GABA receptors in the mediation of the proconvulsant action of ethyl-beta-carboline-3-carboxylate|
|Data di pubblicazione:||1984|
|Citazione:||Evidence for an involvement of GABA receptors in the mediation of the proconvulsant action of ethyl-beta-carboline-3-carboxylate / Concas A; Serra M; Salis M; Nurchi V; Crisponi G; Biggio G. - 23:3(1984), pp. 323-326.|
|Abstract:||The kinetic characteristics of binding of [3H]-GABA and the pattern of isoniazid-induced convulsions were studied in rats treated with repeated intraventricular injections of ethyl-beta-carboline-3-carboxylate (beta-CCE) (10 micrograms/rat, twice daily for 8 days). Thirty-six hours after the last injection, the total number of binding sites for [3H]-GABA was decreased (25%) in the cerebral cortex and hippocampus. On the other hand, there was no significant difference in the dissociation constant (KD) between beta-CCE and solvent-treated rats. The decrease in binding sites for [3H]-GABA was paralleled by a strong potentiation of the convulsant pattern elicited by isoniazid. The results suggest that the proconvulsant effect elicited by beta-CCE is mediated by the decrease in the total number of binding sites for GABA, secondary to the interaction between beta-CCE and the benzodiazepine receptor coupled to the GABA receptor.|
|Tipologia:||1.1 Articolo in rivista|
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