Abstract:The action of kainic acid (KA), quisqualic acid (QA), and 1-(4-chlorobenzoyl)-piperazine-2,3-dicarboxylic acid (pCB-PzDA) was investigated in the central nervous system of male Sprague Dawley rats. Intracerebroventricularly injected KA and QA (100 nmol) induced spike discharges, and pCB-PzDA (100 nmol) suppressed electrocorticograms for one hour. pCB-PzDA enhanced the KA-induced spike discharges and inhibited those induced by QA. 2,3-Di-hydroxyphenylacetic acid(DOPAC) and homovanillic acid (HVA) levels were in… Show more
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