Liquid-chromatographic study of purine metabolism abnormalities in purine nucleoside phosphorylase deficiency

Author:

Chantin C1,Bonin B1,Boulieu R1,Bory C1

Affiliation:

1. Laboratoire d'Etude des Maladies Métaboliques, Hôpital Debrousse, Lyon, France

Abstract

Abstract Using HPLC methods, we measured the concentrations of nucleosides and nucleotides for a patient with no purine nucleoside phosphorylase (PNP; EC 2.4.2.1) enzymatic activity. Concentrations of inosine and guanosine were abnormally high in urine and plasma, whereas guanosine diphosphate (GDP) and guanosine triphosphate (GTP) concentrations in erythrocytes were depleted. The unusual presence of deoxyribonucleosides (deoxyinosine and deoxyguanosine) and deoxyribonucleotides (dGDP and dGTP) was also notable. Thus, HPLC represents an accurate and useful tool for the study of purine metabolic disorders.

Publisher

Oxford University Press (OUP)

Subject

Biochemistry, medical,Clinical Biochemistry

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