Inhibition of leukotriene formation in human leukocytes by halothane

Yamaoka Atsushi, Sumimoto Hideki, Takeshige Koichiro, Itoh Takeo, Isobe Ryuichi, Yoshitake Junichi, Minakami Shigeki

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7 Citations (Scopus)

Abstract

The effects of an inhalation anesthetic, halothane (2-bromo-2-chloro-1,1,1-trifluoroethane) on the formation of 5-lipoxygenase metabolites such as leukotriene B4, 5(S)-hydroxyeicosatetraenoic acid (5-HETE), 6-trans-isomers of leukotriene B4 and leukotriene C4 were studied in human leukocytes stimulated with calcium ionophore A23187. Halothane inhibited the formation of all these metabolites dose dependently and the formation was restored by removal of the drug. The anesthetic also reversibly inhibited the release of [3H]arachidonic acid from neutrophils with a half-inhibition concentration of less than 0.19 mM. The formation of 5-lipoxygenase metabolites was not inhibited by the anesthetic when leukocytes were stimulated with the ionophore in the presence of exogenous arachidonic acid. These observations indicate that the inhibitory effect of halothane on the formation of 5-lipoxygenase metabolites in leukocytes is mainly due to the inhibition of arachidonic acid release.

Original languageEnglish
Pages (from-to)284-292
Number of pages9
JournalBiochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism
Volume918
Issue number3
DOIs
Publication statusPublished - Apr 24 1987

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Endocrinology

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