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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/24320

Title: Metabolic phenotyping of human plasma by H-1-NMR at high and medium magnetic field strengths: a case study for lung cancer
Authors: Louis, Evelyne
Cantrelle, Francois-Xavier
Mesotten, Liesbet
Reekmans, Gunter
Bervoets, Liene
Vanhove, Karolien
Thomeer, Michiel
Lippens, Guy
Adriaensens, Peter
Issue Date: 2017
Publisher: WILEY
Citation: MAGNETIC RESONANCE IN CHEMISTRY, 55(8), p. 706-713
Abstract: Accurate identification and quantification of human plasma metabolites can be challenging in crowded regions of the NMR spectrum with severe signal overlap. Therefore, this study describes metabolite spiking experiments on the basis of which the NMR spectrum can be rationally segmented into well-defined integration regions, and this for spectrometers having magnetic field strengths corresponding to H-1 resonance frequencies of 400 MHz and 900 MHz. Subsequently, the integration data of a case-control dataset of 69 lung cancer patients and 74 controls were used to train a multivariate statistical classification model for both field strengths. In this way, the advantages/disadvantages of high versus medium magnetic field strength were evaluated. The discriminative power obtained from the data collected at the two magnetic field strengths is rather similar, i.e. a sensitivity and specificity of respectively 90 and 97% for the 400 MHz data versus 88 and 96% for the 900 MHz data. This shows that a medium-field NMR spectrometer (400-600 MHz) is already sufficient to perform clinical metabolomics. However, the improved spectral resolution (reduced signal overlap) and signal-to-noise ratio of 900 MHz spectra yield more integration regions that represent a single metabolite. This will simplify the unraveling and understanding of the related, disease disturbed, biochemical pathways.
Notes: [Reekmans, Gunter; Adriaensens, Peter] Hasselt Univ, Inst Mat Res, Appl & Analyt Chem, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. [Louis, Evelyne; Mesotten, Liesbet; Bervoets, Liene; Vanhove, Karolien; Thomeer, Michiel] Hasselt Univ, Fac Med & Life Sci, Martelarenlaan 42, B-3500 Hasselt, Belgium. [Cantrelle, Francois-Xavier; Lippens, Guy] Univ Sci & Technol Lille 1, CNRS UMR 8576, Unite Glycobiol Struct & Fonct, F-59655 Villeneuve Dascq, France. [Mesotten, Liesbet] Ziekenhuis Oost Limburg, Dept Nucl Med, Schiepse Bos 6, B-3600 Genk, Belgium. [Vanhove, Karolien] Algemeen Ziekenhuis Vesalius, Dept Resp Med, Hazelereik 51, B-3700 Tongeren, Belgium. [Thomeer, Michiel] Ziekenhuis Oost Limburg, Dept Resp Med, Schiepse Bos 6, B-3600 Genk, Belgium. [Lippens, Guy] Univ Toulouse, CNRS, Lab Ingn Syst Biol & Proc, INSA,INRA, 135 Ave Rangueil, F-31400 Toulouse, France.
URI: http://hdl.handle.net/1942/24320
DOI: 10.1002/mrc.4577
ISI #: 000404915500003
ISSN: 0749-1581
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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