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  • Title: Apomorphine-haloperidol interactions: different types of antagonism in cortical and subcortical brain regions.
    Author: Bacopoulos NG, Roth RH.
    Journal: Brain Res; 1981 Feb 02; 205(2):313-9. PubMed ID: 7470869.
    Abstract:
    Apomorphine, a dopamine (DA) receptor stimulant induced a dose-dependent decrease in the content of the dopamine metabolites 3,4-dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the olfactory tubercle and striatum of rats, but it was ineffective in the frontal cortex. Apomorphine also antagonized the haloperidol-induced accumulation of DOPAC and HAV in the olfactory tubercle and striatum, whereas in the frontal cortex it antagonized the effects of haloperidol on DOPAC but not on HVA. The total (free and conjugated) content of DA metabolites was measured in these experiments.
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