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J Chromatogr B Analyt Technol Biomed Life Sci. 2009 May 1;877(13):1366-74. doi: 10.1016/j.jchromb.2008.09.041. Epub 2008 Oct 17.

Analysis of oxidized phosphatidylcholines as markers for oxidative stress, using multiple reaction monitoring with theoretically expanded data sets with reversed-phase liquid chromatography/tandem mass spectrometry.

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Department of Metabolome, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.


Recently, it was reported that oxidized phosphatidylcholine shows biological activities via scavenger receptor CD36 or Toll-like receptor 4 (TLR4)-TRIF. Thus, the analysis of oxidized phospholipids is essential in understanding these biological roles. Here, we report an analytical method for oxidized phosphatidylcholines using multiple reaction monitoring (MRM) with theoretically expanded data sets. This analytical method was performed by a quadrupole linear ion trap mass spectrometer with ultra performance LC (UPLC). To investigate whether this established analytical method was applicable to biological samples, we performed variation analysis of oxidized PCs using a myocardial ischemia-reperfusion model. Most oxidized PCs were detected in higher amounts in the ischemic myocardium than in the non-ischemic myocardium. From these application results, this established method is a valuable tool for the global analysis of oxidized PCs. In the future, our study can provide further understanding of how oxidized phospholipids are produced and are correlated to various diseases.

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