ArticleMethods in molecular biology (Clifton, N.J.)2022
Quantitation of Purine in Urine by Ultra-Performance Liquid Chromatography-Tandem Mass Spectrometry.
Article in Methods in molecular biology (Clifton, N.J.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Inborn errors of purine metabolism, either deficiencies of synthesis or catabolism pathways, lead to a wide spectrum of clinical presentations: urolithiasis (adenine phosphoribosyltransferase), primary immune deficiency (adenosine deaminase deficiency and purine nucleoside phosphorylase deficiency), severe intellectual disability, and other neurological symptoms (Lesch-Nyhan disease, adenylosuccinase deficiency, and molybdenum cofactor deficiency). A rapid quantitative purine assay was developed using UPLC-MS/MS to determine purine nucleoside and base concentrations in urine. Taking advantages of ultra-performance liquid chromatography, we achieved satisfactory analyte separation and recovery with a polar T3 column in a short run time with no requirement of time-consuming sample preparation or derivatization. This targeted assay is intended for diagnosis and management of purine diseases, newborn screening follow-up of SCID, and evaluation of autism spectrum disorders.
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