Urinary Metabolite Quantification Employing 2D NMR Spectroscopy

被引：108

作者：

Gronwald, Wolfram ^{[1
]}

Klein, Matthias S. ^{[1
]}

Kaspar, Hannelore ^{[1
]}

Fagerer, Stephan R. ^{[1
]}

Nuernberger, Nadine ^{[1
]}

Dettmer, Katja ^{[1
]}

Bertsch, Thomas ^{[2
]}

Oefner, Peter J. ^{[1
]}

机构：

[1] Univ Regensburg, Inst Funct Gen, D-93053 Regensburg, Germany

[2] Klinikum Nuernberg, Inst Clin Chem Lab Med & Transfus Med, D-90419 Nurnberg, Germany

来源：

ANALYTICAL CHEMISTRY | 2008年 / 80卷 / 23期

关键词：

D O I：

10.1021/ac801627c

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Two-dimensional (2D) nuclear magnetic resonance (NMR) spectroscopy is a fairly novel method for the quantification of metabolites in biological fluids and tissue extracts. We show in this contribution that, compared to 1D H-1 spectra, superior quantification of human urinary metabolites is obtained from 2D H-1-C-13 heteronuclear single-quantum correlation (HSQC) spectra measured at natural abundance. This was accomplished by the generation of separate calibration curves for the different 2D HSQC signals of each metabolite. Lower limits of detection were in the low to mid micromolar range and were generally the lower the greater the number of methyl groups contained in an analyte. The quantitative 2D NMR data obtained for a selected set of 17 urinary metabolites were compared to those obtained independently by means of gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry of amino acids and hippurate as well as enzymatic and colorimetric measurements of creatinine. As a typical application, 2D-NMR was used for the investigation of urine from patients with inborn errors of metabolism.

引用

页码：9288 / 9297

页数：10

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