Development of an on-line SPE-LC-ESI-MS method for urinary nucleosides: hyphenation of aprotic boronic acid chromatography with hydrophilic interaction LC-ESI-MS

Analytical Chemistry
Robin TuyttenEd Dudley

Abstract

The development of an on-line automated SPE-HPLC--ESI-MS method is described for targeted metabolomic analysis of urinary modified nucleoside levels. The setup comprises a boronate affinity column as a trapping device, a hydrophilic interaction chromatography (HILIC) separation and information-dependent MS detection modes. The system was optimized using standards and tested on biological samples, detecting a number of modified nucleosides. Other urinary biomarkers could also be analyzed by the system developed: for example, the urinary nucleobases were also available for analysis. A simultaneous creatinine-monitoring experiment was also demonstrated to be viable when utilizing the method, which is of benefit as creatinine is a urinary normalizing factor.

References

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Aug 4, 2007·Analytical Chemistry·Robin TuyttenEd Dudley

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Citations

Jul 4, 2012·Analytical and Bioanalytical Chemistry·Stefan NeubauerGunda Koellensperger
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