Determination of 5-hydroxytryptophan, serotonin and 5-hydroxyindoleacetic acid in rat and human brain and biological fluids by reversed-phase high-performance liquid chromatography with electrochemical detection

Journal of Chromatography
L Semerdjian-RouquierB Scatton

Abstract

A rapid and sensitive method for the concurrent determination of 5-hydroxytryptophan, serotonin and 5-hydroxyindole acetic acid by reversed-phase high-performance liquid chromatography with electrochemical detection has been developed. The separation of the indolic compounds was achieved using a phosphate-citric acid eluent containing 5% methanol. Detection limits in the low picogram range were found. The method has been applied to the determination of the indolic compounds in rat and human brain tissues, as well as in human plasma and cerebrospinal fluid. Tissue and plasma preparation required only deproteinization before chromatography, while cerebrospinal fluid was directly applied to the column.

Citations

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