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Mk 801 prevents the decrease in sulfur 35 tbps binding in the rat cerebral cortex induced by pentylenetetrazole kindling


, : Mk 801 prevents the decrease in sulfur 35 tbps binding in the rat cerebral cortex induced by pentylenetetrazole kindling. Brain Research Bulletin 27(6): 835-838

Chemical kindling was induced in the rat by chronic treatment with pentylenetetrazol (PTZ, 30 mg/kg, IP, three times a week for eight weeks). PTZ kindling was associated with a reduction in central GABAergic function, as reflected by a significant decrease in the density of 35S-t-butylbicyclophosphorothionate (35S-TBPS) binding sites in the cerebral cortex. The pretreatment with the noncompetitive N-methyl-D-aspartate (NMDA) receptor antagonist MK-801 (1 mg/kg, IP, 40 min before each PTZ injection) prevented the development of kindling as well as the reduction in 35S-TBPS binding. The results suggest that NMDA receptors may play a role in the alterations of GABAergic function observed in PTZ-kindled rats.

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