Abstract | BACKGROUND: METHODS: Purification of urinary nucleosides was performed using a 96-well solid phase extraction (SPE, cation-exchange column) procedure to decrease the variation between the single column preparations and to shorten the pretreatment time. Cation-exchange allows for the comprehensive purification of modified nucleosides, such as 2-deoxynucleosides, that are not purifiable by phenylboronic acid-based SPE. High-performance liquid chromatography (HPLC) coupled with mass spectrometry (MS) in selected reaction monitoring (SRM) mode was used to quantify multiple nucleosides. Tubercidin was used as an internal standard. The qualitative parameters, retention time, and the parent and daughter ions used revealed that the method was more specific and sensitive than traditional UV detection. RESULTS: CONCLUSIONS:
|
Authors | Wei-Yi Hsu, Wei-De Lin, Yuhsin Tsai, Chiung-Tsung Lin, Hwei-Chung Wang, Long-Bin Jeng, Ching-Chih Lee, Yu-Chiang Lin, Chien-Chen Lai, Fuu-Jen Tsai |
Journal | Clinica chimica acta; international journal of clinical chemistry
(Clin Chim Acta)
Vol. 412
Issue 19-20
Pg. 1861-6
(Sep 18 2011)
ISSN: 1873-3492 [Electronic] Netherlands |
PMID | 21740897
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
|
Copyright | Copyright © 2011 Elsevier B.V. All rights reserved. |
Chemical References |
- Biomarkers, Tumor
- Nucleosides
|
Topics |
- Biomarkers, Tumor
(urine)
- Case-Control Studies
- Chromatography, High Pressure Liquid
(methods)
- Female
- Humans
- Nucleosides
(urine)
- Reference Standards
- Spectrometry, Mass, Electrospray Ionization
(methods)
|