thumb|right|The structural formulae of selected oxylipins Oxylipins constitute a family of oxygenated natural products which are formed from fatty acids by pathways involving at least one step of dioxygen-dependent oxidation. These small polar lipid compounds are metabolites of polyunsaturated fatty acids (PUFAs) including omega-3 fatty acids and omega-6 fatty acids. Oxylipins are formed by enzymatic or non-enzymatic oxidation of PUFAs.
thumb|right|The structural formulae of selected oxylipins Oxylipins constitute a family of oxygenated natural products which are formed from fatty acids by pathways involving at least one step of dioxygen-dependent oxidation. These small polar lipid compounds are metabolites of polyunsaturated fatty acids (PUFAs) including omega-3 fatty acids and omega-6 fatty acids. Oxylipins are formed by enzymatic or non-enzymatic oxidation of PUFAs.
In animal species, four main pathways of oxylipin production prevail: lipoxygenases (LOXs) pathway, cyklooxygenases (COXs) route, cytochrome P450 (CYPs) pathway, and reactive oxygen species (ROS) route. These pathways result in formation of many different oxylipin molecules which are important for number of processes in living organisms. The processes include inflammation, blood flow, energy metabolism, cellular life, cell signaling, or muscle contractions. Oxylipins have both pro- and anti-inflammatory roles.
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