1-Methyl-4-phenylpyridinium and 3-nitropropionic acid diminish cortical synthesis of kynurenic acid via interference with kynurenine aminotransferases in rats.


The aim of the present study was to evaluate the effect of mitochondrial inhibitors, 1-methyl-4-phenylpyridinium (MPP(+)) and 3-nitropropionic acid (3-NPA), on the brain production of endogenous glutamate antagonist, kynurenic acid (KYNA). MPP(+) and 3-NPA dose-dependently impaired the synthesis of KYNA in rat cortical slices. Enzymatic studies revealed… (More)


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