Determination of 3-hydroxykynurenine in human brain and plasma by high-performance liquid chromatography with electrochemical detection. Increased concentrations in hepatic encephalopathy - PubMed (original) (raw)

Determination of 3-hydroxykynurenine in human brain and plasma by high-performance liquid chromatography with electrochemical detection. Increased concentrations in hepatic encephalopathy

S J Pearson et al. J Chromatogr. 1991.

Abstract

A simple and specific method was developed for the determination of 3-hydroxykynurenine in brain tissue and blood plasma using high-performance liquid chromatography with electrochemical detection. This involved an extraction procedure using strong cation-exchange columns and also permitted the determination of 3-hydroxyanthranilic acid in brain tissue. The method was applied to the investigation of post mortem brain tissue from patients with hepatic encephalopathy. Cortical 3-hydroxykynurenine concentrations were substantially increased in such patients above control values, providing evidence for a dysfunction of tryptophan metabolism in this disease.

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