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Resolvin D1-d5 (RvD1-d5) is intended for use as an internal standard for the quantification of RvD1 by GC- or LC-mass spectrometry. Resolvins are a family of potent lipid mediators derived from both eicosapentaenoic acid and docosahexaenoic acid .1 In addition to being anti-inflammatory, resolvins promote the resolution of the inflammatory response back to a non-inflamed state.2 RvD1 is produced physiologically from the sequential oxygenation of DHA by 15- and 5-lipoxygenase.1 A 17(R)-epimer of RvD1 can also be generated in aspirin-treated samples.3 Both RvD1 and its 17(R) configuration reduce human polymorphonuclear leukocyte (PMNL) transendothelial migration, the earliest event in acute inflammation, with EC50 values of ~30 nM.4 RvD1 and its aspirin-triggered form also exhibit a dose-dependent reduction in leukocyte infiltration in a mouse model of peritonitis with a maximal inhibition of ~35% at a 10-100 ng dose.4

1.Hong, S., Gronert, K., Devchand, P.R., et al.Novel docosatrienes and 17S-resolvins generated from docosahexaenoic acid in murine brain, human blood, and glial cells. Autacoids in anti-inflammationJ. Biol. Chem.278(17)14677-14687(2003) 2.Ariel, A., and Serhan, C.N.Resolvins and protectins in the termination program of acute inflammationTRENDS in Immunology28(4)176-183(2007) 3.Serhan, C.N., Hong, S., Gronert, K., et al.Resolvins: A family of bioactive products of ω-3 fatty acid transformation circuits by aspirin treatment that counter proinflammation signalsJ. Exp. Med.196(8)1025-1037(2002) 4.Sun, Y.P., Oh, S.F., Uddin, J., et al.Resolvin D1 and its aspirin-triggered 17R epimer stereochemical assignments, anti-inflammatory properties, and enzymatic inactivationThe Journal of Biological Chemisty282(13)9323-9334(2007)

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