Characterization of PAF receptors on human neutrophils using the specific antagonist, WEB 2086. Correlation between receptor binding and function

FEBS Lett. 1989 Feb 27;244(2):365-8. doi: 10.1016/0014-5793(89)80564-2.

Abstract

The antagonism of PAF effects by WEB 2086 and the receptor binding of [3H]WEB 2086 were investigated in isolated human neutrophils. WEB 2086 inhibited PAF-induced beta-glucuronidase release and [3H]WEB 2086 bound specifically to high-affinity sites on the cells. Close concordance between affinity constants for WEB 2086 from functional and radioligand-binding studies suggests that WEB 2086 interacts with the neutrophil PAF receptors and that [3H]WEB 2086 may be a useful ligand in investigation of these receptors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Azepines / metabolism*
  • Azepines / pharmacology
  • Glucuronidase / blood
  • Humans
  • In Vitro Techniques
  • Kinetics
  • Neutrophils / drug effects
  • Neutrophils / metabolism*
  • Platelet Activating Factor / antagonists & inhibitors
  • Platelet Activating Factor / metabolism*
  • Platelet Membrane Glycoproteins*
  • Receptors, Cell Surface / drug effects
  • Receptors, Cell Surface / metabolism*
  • Receptors, G-Protein-Coupled*
  • Triazines / metabolism*
  • Triazines / pharmacology
  • Triazoles*

Substances

  • Azepines
  • Platelet Activating Factor
  • Platelet Membrane Glycoproteins
  • Receptors, Cell Surface
  • Receptors, G-Protein-Coupled
  • Triazines
  • Triazoles
  • platelet activating factor receptor
  • WEB 2086
  • Glucuronidase