[Histotopography of changes in the enzyme activity of rat brain exposed to fluorophenazine]

The influence of fluorophenazine on succinic-, citric acid-, NAD-H2-and NADP-H2-dehydrogenases in different structures of rat brain was investigated by histochemical methods. Three hours after a single subcutaneous injection of fluorophenazine (1 and 5 mg/kg) the enzymatic activity was the greatest in the limbic and the frontal regions of the cortex. The inhibitory effects of fluorophenazine in these structures were greater than those of the neuroleptics trifluoroperazine, chlorpromazine.