Chromatographic analysis of dopamine metabolism in a Parkinsonian model

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32 Citations (Scopus)

Abstract

The present study examined the metabolism of released dopamine from rat striatum upon chronic rotenone exposure. The sample separation was carried out by two-dimensional, reversed-phase and ion pair reversed-phase chromatography using on-line solid phase extraction enrichment. Reduced dopamine content and decreased extracellular level of [3H] and endogenous dopamine evoked by electrical stimulation indicated the injury of dopaminergic pathway. Sensitivity of dopaminergic neurons were increased to oxidative stress with enhanced release of dopamine and formation of oxidized metabolite dopamine quinone (DAQ). Utilizing multidimensional detection, EC at -100 mV reduction potential, the method has been applied for identification of DAQ and aminochrome (DAC).

Original languageEnglish
Pages (from-to)13-20
Number of pages8
JournalJournal of Chromatography A
Volume1120
Issue number1-2
DOIs
Publication statusPublished - Jul 7 2006

Keywords

  • Dopamine metabolism
  • Dopamine quinone
  • Endogenous
  • Multi dimensional analysis
  • Neurotransmitter release

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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