2007
DOI: 10.1002/elps.200600417
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Evaluation of different warping methods for the analysis of CE profiles of urinary nucleosides

Abstract: Nowadays, numerous metabolite concentrations can readily be determined in a given biological sample by high-throughput analytical methods. However, such raw analytical data comprise noninformative components due to many disturbances normally occurring in the analyses of biological material. To eliminate those unwanted original analytical data components, advanced chemometric data preprocessing methods might be of help. Here, such methods are applied to electrophoretic nucleoside profiles in urine samples of ca… Show more

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Cited by 34 publications
(43 citation statements)
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“…For our data, the application of the trilinearity constraint was also advantageous to the bilinear model because it helped to preserve unimodal peak shapes and, by that, more accurate resolution and quantification estimates (unpublished data, available on request). Because in the CE data shifts of peaks were present (similar to shifts observed in [26], but not corrected during the current data preprocessing, see Fig. 2), the application of the trilinearity constraint without synchronization has been the best choice.…”
Section: Resolution Of Nucleosides In Biological Samples By Mcr-alsmentioning
confidence: 94%
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“…For our data, the application of the trilinearity constraint was also advantageous to the bilinear model because it helped to preserve unimodal peak shapes and, by that, more accurate resolution and quantification estimates (unpublished data, available on request). Because in the CE data shifts of peaks were present (similar to shifts observed in [26], but not corrected during the current data preprocessing, see Fig. 2), the application of the trilinearity constraint without synchronization has been the best choice.…”
Section: Resolution Of Nucleosides In Biological Samples By Mcr-alsmentioning
confidence: 94%
“…1) in the spectral range of 190-210 nm, where the original S/N ratio was inappropriate for peak deconvolution. More details about the applied baseline correction and denoising tools and their efficiency in the case of similar electrophoretic data are described in an earlier study [25].…”
Section: Chemometric Methodsmentioning
confidence: 99%
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“…Compostos heteromonocíclicos aromáticos 67 Diversos trabalhos em metabolômica têm se dedicado à busca de biomarcadores para o câncer de bexiga utilizando tanto abordagem target [160][161][162][163] quanto untarget. 1,[164][165][166][167][168][169] A urina é utilizada como matriz alvo em alguns estudos de busca de biomarcadores para o diagnóstico da doença.…”
Section: Compostos Heteropolicíclicos Alifáticos 40unclassified