a1777

Description: A1777 is a novel, potent and selective 5-lipoxygenase inhibitor that can reduce proliferation of leukocytes without affecting the eosinophils of mast cells. 5-Lipoxygenase (5-LO) catalyzes two steps in biosynthesis of leukotrienes (LTs), a group of lipid mediators of inflammation derived from arachidonic acid (AA). LT antagonists are used in treatment of asthma; more recently a potential role also in atherosclerosis has raised considerable interest. In IgG-BSA complex pleurisy, 90% of the pleural exudate for the first 20 minutes was inhibited by the same treatment, and the rest was completely suppressed by simultaneous treatment with an intrapleural injection of AA-1777. AA-1777 was also very effective in reducing the migrating numbers of polymorphonuclear and mononuclear leukocytes to half.

References: Prostaglandins. 1986 Jun; 31(6):1099-116.