This study describes a method for simultaneously quantifying 163 polyunsaturated fatty acids (PUFAs) and their oxidized products (oxylipins) using liquid chromatography-mass spectrometry (LC-MS). The protocol provides details on PUFA purification, LC-MS analysis, and quantitative approaches for data evaluation. An example of PUFA quantification in animal tissue, along with a bioinformatic protocol, is provided for inter-sample comparison and statistical analysis.
Polyunsaturated fatty acids (PUFAs) and their oxidized products (oxylipins) are important mediators in intra-and extra-cellular signaling. We describe here the simultaneous quantification of 163 PUFAs and oxylipins using liquid chromatography-mass spectrometry (LC-MS). The protocol details steps for PUFA purification from various biological materials, the conditions for LC-MS analysis, as well as quantitative approaches for data evaluation. We provide an example of PUFA quantification in animal tissue along with the bioinformatic protocol, enabling efficient inter-sample comparison and statistical analysis.For complete details on the use and execution of this protocol, please refer to Vila et al.,1 Costanza et al.,2 Blomme et al.,3 and Blomme et al.4
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