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Anal Chem

Title:		Analysis of a Broad Range of Carbonyl Metabolites in Exhaled Breath by UHPLC-MS
Author(s):		Xie Z; Morris JD; Mattingly SJ; Sutaria SR; Huang J; Nantz MH; Fu XA;
Address:
Journal Title:		Anal Chem
Year:		2023
Volume:		20230223
Issue:		9
Page Number:		4344 - 4352
DOI:		10.1021/acs.analchem.2c04604
ISSN/ISBN:		1520-6882 (Electronic) 0003-2700 (Print) 0003-2700 (Linking)
Abstract:		"Analysis of volatile organic compounds (VOCs) in exhaled breath (EB) has shown great potential for disease detection including lung cancer, infectious respiratory diseases, and chronic obstructive pulmonary disease. Although many breath sample collection and analytical methods have been developed for breath analysis, analysis of metabolic VOCs in exhaled breath is still a challenge for clinical application. Many carbonyl compounds in exhaled breath are related to the metabolic processes of diseases. This work reports a method of ultrahigh-performance liquid chromatography coupled with high-resolution mass spectrometry (UHPLC-MS) for the analysis of a broad range of carbonyl metabolites in exhaled breath. Carbonyl compounds in the exhaled breath were captured by a fabricated silicon microreactor with a micropillar array coated with 2-(aminooxy)ethyl-N,N,N-trimethylammonium (ATM) triflate. A total of six subgroups consisting of saturated aldehydes and ketones, hydroxy-aldehydes, and hydroxy-ketones, unsaturated 2-alkenals, and 4-hydroxy-2-alkenals were identified in the exhaled breath. The combination of a silicon microreactor for the selective capture of carbonyl compounds with UHPLC-MS analysis may provide a quantitative method for the analysis of carbonyls to identify disease markers in exhaled breath"
Keywords:		"Chromatography, High Pressure Liquid *Silicon *Volatile Organic Compounds/analysis Aldehydes/analysis Ketones/analysis Breath Tests/methods;"
Notes:		"MedlineXie, Zhenzhen Morris, James D Mattingly, Stephanie J Sutaria, Saurin R Huang, Jiapeng Nantz, Michael H Fu, Xiao-An eng R21 CA229057/CA/NCI NIH HHS/ U18 TR003787/TR/NCATS NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't 2023/02/24 Anal Chem. 2023 Mar 7; 95(9):4344-4352. doi: 10.1021/acs.analchem.2c04604. Epub 2023 Feb 23"