alexa High-throughput lipidomic analysis of fatty acid derived eicosanoids and N-acylethanolamines.
Chemistry

Chemistry

Modern Chemistry & Applications

Author(s): Dumlao DS, Buczynski MW, Norris PC, Harkewicz R, Dennis EA

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Abstract Fatty acid-derived eicosanoids and N-acylethanolamines (NAE) are important bioactive lipid mediators involved in numerous biological processes including cell signaling and disease progression. To facilitate research on these lipid mediators, we have developed a targeted high-throughput mass spectrometric based methodology to monitor and quantitate both eicosanoids and NAEs, and can be analyzed separately or together in series. Each methodology utilizes scheduled multiple reaction monitoring (sMRM) pairs in conjunction with a 25 min reverse-phase HPLC separation. The eicosanoid methodology monitors 141 unique metabolites and quantitative amounts can be determined for over 100 of these metabolites against standards. The analysis covers eicosanoids generated from cycloxygenase, lipoxygenase, cytochrome P450 enzymes, and those generated from non-enzymatic pathways. The NAE analysis monitors 36 metabolites and quantitative amounts can be determined for 33 of these metabolites against standards. The NAE method contains metabolites derived from saturated fatty acids, unsaturated fatty acids, and eicosanoids. The lower limit of detection for eicosanoids ranges from 0.1pg to 1pg, while NAEs ranges from 0.1pg to 1000pg. The rationale and design of the methodology is discussed. Copyright © 2011 Elsevier B.V. All rights reserved.
This article was published in Biochim Biophys Acta and referenced in Modern Chemistry & Applications

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