Abstract

A simple and sensitive method for the concurrent determination of the monoamine metabolites MHPG, DOPAC, HVA and 5HIAA in brain samples is described. After solvent extraction at acid pH, the metabolites are separated by HPLC on a C 18 reversed phase column using phosphate buffers. Detection and quantification are achieved using fluorescence and electrochemical detection in series. The method is applied to control samples of divers areas of human and non-human primate brain, and the distribution of results agrees well with those obtained by existing methods. The concentrations found also agreed well with literature values, and, for 5HIAA and DOPAC, with results obtained on parallel samples analysed by fluorimetry and by GC. Results for HVA however are higher than those obtained by GC, but agree well with literature values obtained by fluorimetry and by GCMS.

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