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“An increase of CSF GABA levels was found after 30 days of treatment with sulpiride and during chronic treatment with different neuroleptics for many years in long-stay hospitalized schizophrenic patients.”
“ Sulpiride also increased [3H]GABA efflux during KCl-induced depolarization, an effect that was antagonized by SCH-23390 as in the case of electrical stimulation.”
“Lightening of skin color with dopamine was inhibited by a D2 receptor antagonist (sulpiride), and the effect of GABA was blocked by both sulpiride and a GABAA receptor antagonist (bicuculline).”
“Furthermore the stimulation of D1 receptors either by 2,3,4,5-tetrahydro,7,8-dihydroxy,1-phenyl,1-H,3-benzazepine or by D-amphetamine in the presence of S-sulpiride also enhanced the release of [3H]GABA.”
“Clozapine and particularly sulpiride were weak inhibitors of the GABA uptake process, whereas some of the butyrophenones examined exhibited rather potent effect.”