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Lipoxin A4 inhibits phosphoinositide hydrolysis in human neutrophils

  • Beatrice M. Grandordy
  • , Helene Lacroix
  • , Elie Mavoungou
  • , Steven Krilis
  • , Attilio E.G. Crea
  • , Bernd W. Spur
  • , Tak H. Lee

Research output: Contribution to journalArticlepeer-review

Abstract

Lipoxins (LX) are trihydroxytetraene metabolites derived from arachidonic acid via an interaction between the 5- and 15-lipoxygenases. Preincubation of [3H] myo-inositol labeled PMN with 10-7M and 10-5M LXA4 for 1 minute at 37°C resulted in a concentration dependent inhibition of the generation of [3H] IP3 and [3H] IP in cells subsequently stimulated by increasing doses of LTB4 or FMLP for 1 minute at 37°C. Preincubation of PMN with LXA4 did not inhibit specific binding of [3H] LTB4 to PMN. These results indicate that LXA4 inhibits chemotactic factor-induced phosphoinositide hydrolysis at a post-receptor level.

Original languageEnglish (US)
Pages (from-to)1022-1029
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume167
Issue number3
DOIs
StatePublished - Mar 30 1990
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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