maresin 2

Maresin 2 (3R,14S-diHDHA) is a specialized pro-ablative lipid mediator (SPM) with anti-inflammatory and analgesic activity, promotes mucosal repair, and reduces neutrophil recruitment in yeast polymerase peritonitis.

Maresin conjugates in tissue regeneration 2 (MCTR2) is a specialized pro-resolving mediator (SPM) synthesized from docosahexaenoic acid in macrophages at the site of inflammation. DHA is oxidized to maresin 1 , which is converted to MCTR1 by glutathione S-transferase Mu 4 or leukotriene C4 synthase then to MCTR2 by γ-glutamyl transferase. MCTR2 accelerates tissue regeneration in planaria (1 and 100 nM). Pretreatment with MCTR2 prior to E. coli administration reduces neutrophil infiltration, shortens the inflammatory resolution period, and increases phagocytosis of E. coli by macrophages. When administered at a dose of 100 ng 12h post E. coli infection in a mouse model of peritonitis, MCTR2 selectively reduced the amount of the eicosanoids PGD2 and PGF2α in the exudate.

Maresin 1 is a small molecule compound biosynthesized by macrophages (MΦ) with significant anti-inflammatory activity that attenuates LPS-induced lung injury in mice by inhibiting neutrophil adhesion and decreasing the levels of pro-inflammatory cytokines, and stimulates intracellular Ca2+ production and secretion.