Release of dopamine is reduced by diazepam more in the nucleus accumbens than in the caudate nucleus of conscious rats

R. Invernizzi, Laura Pozzi, R. Samanin

Research output: Contribution to journalArticlepeer-review

Abstract

The effects of 1-20 mg kg diazepam were studied on the extracellular concentrations of dopamine (DA), dihydroxyphenylacetic acid (DOPAC) and homovanillic acid (HVA) in the nucleus accumbens and striatum of conscious rats, using intracerebral microdialysis. Five, but not 1 mg kg diazepam significantly reduced extracellular DA, DOPAC and HVA in the nucleus accumbens. Twenty mg kg diazepam significantly reduced extracellular DA, DOPAC and HVA in the striatum. A significant effect on striatal DOPAC, but not on DA and HVA, was seen with 10 mg kg diazepam, while no changes were found with 5 mg kg diazepam. The results suggest that diazepam reduces the release and metabolism of DA in the nucleus accumbens more than in the striatum.

Original languageEnglish
Pages (from-to)575-578
Number of pages4
JournalNeuropharmacology
Volume30
Issue number6
DOIs
Publication statusPublished - 1991

Keywords

  • diazepam
  • dopamine metabolism
  • dopamine release
  • nucleus accumbens
  • striatum

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience
  • Drug Discovery
  • Pharmacology

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