Stimulation of human eosinophil and neutrophil polymorphonuclear leukocyte chemotaxis and random migration by 12-L-hydroxy-5,8,10,14-eicosatetraenoic acid.
A human platelet lipoxygenase-generated product of arachidonic acid, identified by thin-layer chromatographic and mass spectrometric properties as 12-L-hydroxy-5,8,10,14-eicosatertraenoic acid (HETE), was selectively chemotactic in vitro for human polymorphonuclear leukocytes (PMN), as compared to mononuclear leukocytes, with a preference for eosinophils. Preincubation of PMN with partially-purified HETE at peak chemotactic concentrations of 8-24 mug/ml reduced their random and chemotactic migration and stimulated the activity of their hexose monophosphate shunt; minimally chemotactic concentrations of 0.03-1 mug/ml enhanced PMN random migration without influencing other functions. HETE may thus be capable of preferentially attracting eosinophils to foci of tissue reaction associated with platelet activation.
D001095:Arachidonic Acids / Q000494:pharmacology*; D002465:Cell Movement / Q000187:drug effects; D002633:Chemotaxis / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D004804:Eosinophils / Q000502:physiology*; D006801:Humans; D009504:Neutrophils / Q000502:physiology*
D001095:Arachidonic Acids