Title : Effects of typical and atypical antipsychotics on neuropeptide Y in rat brain tissue and microdialysates from ventral striatum.

Pub. Date : 2000 Aug 15

PMID : 10931533






6 Functional Relationships(s)
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1 The main goal of this study was to investigate effects of typical (haloperidol) and atypical (risperidone) antipsychotic drugs on brain regional neuropeptide Y (NPY)-like immunoreactivity (-LI) tissue concentrations and on release of NPY-LI in freely moving rats. Haloperidol neuropeptide Y Rattus norvegicus
2 The main goal of this study was to investigate effects of typical (haloperidol) and atypical (risperidone) antipsychotic drugs on brain regional neuropeptide Y (NPY)-like immunoreactivity (-LI) tissue concentrations and on release of NPY-LI in freely moving rats. Haloperidol neuropeptide Y Rattus norvegicus
3 Haloperidol significantly increased NPY-LI in hypothalamus and the occipital cortex. Haloperidol neuropeptide Y Rattus norvegicus
4 In contrast, haloperidol decreased tissue levels of NPY-LI in striatum. Haloperidol neuropeptide Y Rattus norvegicus
5 Moreover, haloperidol and risperidone also significantly decreased extracellular NPY-LI concentrations in the ventral striatum. Haloperidol neuropeptide Y Rattus norvegicus
6 The results show that d-amphetamine as well as haloperidol and risperidone selectively and specifically affect NPY-LI concentrations in brain tissue and microdialysates and that the effect of d-amphetamine is abolished by both typical and atypical antipsychotics. Haloperidol neuropeptide Y Rattus norvegicus