Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/60459
標題: Rapid screening assay of trimethylaminuria in urine with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry
作者: Hsu, W.Y.
賴建成
Lo, W.Y.
Lai, C.C.
Tsai, F.J.
Tsai, C.H.
Tsai, Y.
Lin, W.D.
Chao, M.C.
關鍵字: amino-acid-analysis;fish-odor syndrome;gas-chromatography;quantitative-determination;diagnosis
Project: Rapid Communications in Mass Spectrometry
期刊/報告no:: Rapid Communications in Mass Spectrometry, Volume 21, Issue 12, Page(s) 1915-1919.
摘要: 
Trimethyamine (TMA) and trimethylamine N-oxide (TMAO) are the most important urine parameters for diagnosing and monitoring trimethylaminuria. A rapid, simple, and specific method based on matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) was developed to determine the presence of TMA and TMAO in urine samples from patients with trimethylaminuria. Formation of the quaternary tetramethylamino iodide by derivatization of TMA with methyl iodide allows measurement of TMA by MALDI-TOFMS. The method is repeatable and reproducible, with coefficients of variance (CVs) <3%. This new method was used for direct determination of TMA and TMAO in urine specimens obtained from normal children and patients. The proposed method allows for rapid and reliable measurements of TMA and TMAO in urine specimens from patients affected by trimethylaminuria. Copyright (C) 2007 John Wiley & Sons, Ltd.
URI: http://hdl.handle.net/11455/60459
ISSN: 0951-4198
DOI: 10.1002/rcm.3043
Appears in Collections:分子生物學研究所

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