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Dormant 5-lipoxygenase in inflammatory macrophages is triggered by exogenous arachidonic acid.

Scientific reports (2017-09-10)
Carlos A Sorgi, Simona Zarini, Sarah A Martin, Raphael L Sanchez, Rodrigo F Scandiuzzi, Miguel A Gijón, Carlos Guijas, Nicolas Flamand, Robert C Murphy, Lucia H Faccioli
ZUSAMMENFASSUNG

The differentiation of resident tissue macrophages from embryonic precursors and that of inflammatory macrophages from bone marrow cells leads to macrophage heterogeneity. Further plasticity is displayed through their ability to be polarized as subtypes M1 and M2 in a cell culture microenvironment. However, the detailed regulation of eicosanoid production and its involvement in macrophage biology remains unclear. Using a lipidomics approach, we demonstrated that eicosanoid production profiles between bone marrow-derived (BMDM) and peritoneal macrophages differed drastically. In polarized BMDMs, M1 and M2 phenotypes were distinguished by thromboxane B

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