title: PGE2 and PGF2alpha biosynthesis in stimulated and nonstimulated peritoneal preparations containing macrophages.
abstract: The biosynthesis of PGE2 and PGF2alpha was measured in intact peritoneal exudate preparations obtained from C. parvum-treated and control C3H mice. Although both the control and stimulated preparations biosynthesized PGF2alpha and PGE2 from [1-14C] arachidonic acid, the stimulated preparations generated more of both prostaglandins than did nonstimulated preparations, probably as a result of increased synthesis within macrophages. Increased transformation of PGE2 into PGF2alpha by PGE2 9-ketoreductase was noted in stimulated preparations when compared to that in control cells. The data suggest that stimulated macrophages are capable of generating increased quantities of PGF2alpha and therefore might function as one source of this substance in resolving inflammatory reactions.
mesh_terms: D000818:Animals; D001095:Arachidonic Acids / Q000378:metabolism; D001202:Ascitic Fluid / Q000166:cytology*; D008264:Macrophages / Q000378:metabolism*; D051379:Mice; D008809:Mice, Inbred C3H; D011458:Prostaglandins E / Q000096:biosynthesis* / Q000378:metabolism; D011460:Prostaglandins F / Q000096:biosynthesis* / Q000378:metabolism; D013997:Time Factors
chemical_list: D001095:Arachidonic Acids; D011458:Prostaglandins E; D011460:Prostaglandins F