20-HEPE is a metabolite of eicosapentaenoic acid that is formed via ω-oxidation of EPA by cytochrome P450 (CYP) ω-oxidases, including human CYP4F3B. It activates peroxisome proliferator-activated receptor α (PPARα) in COS-7 cells expressing a luciferase reporter when used at a concentration of 10 μM. 20-HEPE also activates murine transient receptor potential vanilloid receptor 1 (mTRPV1) in vitro but lacks antinociceptive activity in rats.
PXS-4681A is a powerful, specific, and irreversible inhibitor of semicarbazide-sensitive amine oxidase (SSAO; VAP-1), with an oral activity and a Ki value of 37 nM. It exhibits exceptional selectivity towards related amine oxidases, ion channels, and seven-transmembrane domain receptors. Additionally, PXS-4681A demonstrates potent anti-inflammatory properties.