Figure 1.
Lipidomic analysis of RvE1 in human plasma. (a) Representative MS/MS selected ion chromatogram at m/z 291 and (b) MS3 selected ion chromatogram at m/z 229. (c) Scheme of RvE1 generation from EPA. Human endothelial cells expressing COX-2 treated with aspirin transform EPA by abstracting hydrogen at C16 to give R insertion of molecular oxygen to yield 18R-H(p)EPE. Alternatively, cytochrome P450 monooxygenase can convert EPA to 18R-HEPE (reference 28). They are further converted via sequential actions of a leukocyte 5-LO–like reaction, which leads to formation of RvE1.