alexa Regional differences in the effect of haloperidol and atypical neuroleptics on interstitial levels of DOPAC in the rat forebrain: an in vivo microdialysis study.


Journal of Addiction Research & Therapy

Author(s): FinkJensen A, Hansen L, Hansen JB, Nielsen EB

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Abstract The effect of 'typical' and 'atypical' neuroleptics on interstitial levels of the dopamine metabolite 3,4- dihydroxyphenylacetic acid ([DOPAC]e) in the dorsolateral striatum (DLSt), the nucleus accumbens (NAc) and the medial prefrontal cortex (PFC) was investigated in awake rats by use of the microdialysis technique. All neuroleptics increased [DOPAC]e in the DLSt, NAc and in PFC. However, the 'atypical' neuroleptics clozapine, risperidone, sertindole and NNC 22-0031 showed an apparent cortical selectivity by preferentially elevating [DOPAC]e in the PFC compared with the DLSt and NAc, a feature which was not observed with the 'typical' neuroleptic haloperidol. Our data suggest that 'atypical' neuroleptics can be differentiated from the 'typical' neuroleptic, haloperidol, with respect to their ability to increase [DOPAC]e in PFC relative to DLSt and NAc. This article was published in J Psychopharmacol and referenced in Journal of Addiction Research & Therapy

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