Abstract
Exogenous arachidonic acid was trapped in human leukocytes with ethanol at 0°C and 16°C. Leukotriene B4 and its isomers were produced from the trapped substrate, and this production continued for at least 24 h at 0°C. Synthesis from trapped substrate of these eicosanoids increased as a function of the incubation temperature. The ability to study leukotriene synthesis and intercellular transfer from exogenous but intracellularly trapped substrate without the multiple effects of cell activators may be of value in elucidating the metabolism and regulatory properties of these lipoxygenase products.
Similar content being viewed by others
References
Borgeat, P., andB. Samuelsson. 1979. Metabolism of arachidonic acid in polymorphonuclear leukocytes: Structural analysis of novel hydroxylated compounds.J. Biol. Chem. 254:7865–7869.
Borgeat, P., andB. Samuelsson. 1979. Arachidonic acid metabolism in polymorphonuclear leukocytes: Effects of ionophore A23187.Biochemistry 76:2148–2152.
Serhan, C. H., M. Hamberg, andB. Samuelsson. 1984. Lipoxins: Novel series of biologically active compounds formed from arachidonic acid in human leukocytes.Proc. Natl. Acad. Sci. U.S.A. 81:5335–5339.
Lewis, R. A., andK. F. Austen. 1986. Regulation of the generation and release of leukotrienes.In The Leukotrienes: Their Biological Significance. P. J. Piper, editor. Raven Press, New York. 127–133.
Green, F. A., andH. E. Claesson. 1986. Ethanol-enhanced transmembrane penetration of arachidonic acid and activation of the 5-lipoxygenase pathway in human leukocytes.Biochem. Biophys. Res. Commun. 140:782–788.
Hjorth, R., A.-K. Jonsson, andP. Vretblad. 1981. A rapid method for purification of human granulocytes using Percoll. A comparison with dextran sedimentation.J. Immunol. Methods 43:95–101.
Claesson, H. E., J. A. Lindgren, andB. Gustafsson. 1985. Opsonized bacteria stimulate leukotriene synthesis in human leukocytes.Biochim. Biophys. Acta 836:361–367.
Hansson, G., C. Malmsten, andO. Radmark. 1983. The leukotrienes and other lipoxygenase products.In Prostaglandins and Related Substances. C. Pace-Asciak and E. Granstrom, editors. Elsevier, Amsterdam. 127–169.
Westcott, J. R.., andR. C. Murphy. 1983. The interaction of ethanol and exogenous arachidonic acid in the formation of leukotrienes and prostaglandin D2 in mastocytoma cells.Prostaglandins 26:223–239.
Green, F. A., C. A. Herman, andR. P. Herman. 1987. Leukotrienes and related eicosanoids are produced by frog leukocytes.Biochem. Biophys. Res. Commun. 142:309–314.
Manara, F. S., andD. L. Schneider. 1985. Evidence that activation requires membrane fusion.Biochem. Biophys. Res. Commun. 132:696–701.
Smith, W. L., andW. E. M. Lands. 1972. Oxygenation of unsaturated fatty acids by soybean lipoxygenase.J. Biol. Chem. 247:1038–1047.
Movat, H. Z. 1985. Cells of the inflammatory exudate.In The Inflammatory Reaction. H. Z. Movat, editor. Elsevier, Amsterdam. 262–268.
Author information
Authors and Affiliations
Additional information
Supported by the Swedish Medical Research Council grant 03X-07135.
On leave from the Department of Medicine, State University of New York at Buffalo and the Veterans Administration Medical Center, Buffalo, New York.
Rights and permissions
About this article
Cite this article
Green, F.A. Intracellular cold trapping of exogenous arachidonic acid and activation of the 5-lipoxygenase pathway of human neutrophils. Inflammation 12, 45–50 (1988). https://doi.org/10.1007/BF00915891
Issue Date:
DOI: https://doi.org/10.1007/BF00915891