Journal
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
Volume 21, Issue 7, Pages 1129-1132Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jasms.2010.02.021
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Funding
- European Community [FP7/2007-2013, PIEF-GA-2008-220511]
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Sarcosine, an isomer of L-alanine, has been proposed as a prostate cancer progression biomarker [1]. Both compounds are detected in urine, where the measured sarcosine/alanine ratio has been found to be higher in prostate biopsy-positive group versus controls. We present here preliminary evidence showing that urine samples spiked with sarcosine/alanine can be partially resolved in 3 min via tandem differential mobility analysis-mass spectrometry (DMA-MS). Based on the calibration curves obtained for two mobility peaks, we finally estimate their concentration ratio in urine. (J Am Soc Mass Spectrom 2010, 21, 1129-1132) (C) 2010 American Society for Mass Spectrometry
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