Zhang, T. and Watson, D. (2016) Evaluation of the technical variations and the suitability of a hydrophilic interaction liquid chromatography-high resolution mass spectrometry (ZIC-pHILIC-Exactive orbitrap) for clinical urinary metabolomics study. Journal of Chromatography B, 1022, pp. 199-205. (doi: 10.1016/j.jchromb.2016.04.017) (PMID:27107246)
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120285.pdf - Accepted Version 1MB |
Abstract
Although many hydrophilic interaction liquid chromatography-high resolution mass spectrometry (HILIC-HRMS) methods have been developed and applied for untargeted metabolite profiling in clinical metabolomics, according to the literature, the suitability of these HILIC-HRMS methods has not been fully evaluated with respect to their performance when they are subjected to statistical analysis. In this study, using a series of human urine samples we investigated the effect of technical variations on multivariate and univariate analysis of the data collected using a previously developed HILIC-HRMS method for untargeted urinary metabolite profiling in clinical metabolomics. The technical variation introduced by sample preparation was more significant than that produced by the HILIC-HRMS method. By using an orthogonal partial least squares (OPLS) model, subtle fold-changes were accurately measured in the urine samples spiked with 13C and 15N isotope labelled amino acids at different concentrations. The robustness of this HILIC method was also evaluated by analysing the obtained data from a single urine sample following manipulation of several primary LC parameters. High reproducibility in the chromatographic performance of three ZIC-pHILIC columns with different batch numbers indicated the reliability of the polymer based zwitterionic stationary phase allowing column replacement without compromising the performance of the method.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Watson, Mr David and Zhang, Mr Tong |
| Authors: | Zhang, T., and Watson, D. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Cancer Sciences College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School |
| Journal Name: | Journal of Chromatography B |
| Publisher: | Elsevier |
| ISSN: | 1570-0232 |
| ISSN (Online): | 1570-0232 |
| Published Online: | 13 April 2016 |
| Copyright Holders: | Copyright © 2016 Elsevier |
| First Published: | First published in Journal of Chromatography B 1002:199-205 |
| Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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