Kantar A, Giorgi PL, Fiorini R. Effect of PAF on human lymphocyte membranes: a fluorescence study.
AGENTS AND ACTIONS 1993;
38 Spec No:C115-7. [PMID:
8317302 DOI:
10.1007/bf01991155]
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Abstract
We have studied the effect of platelet-activating factor (PAF) on the physico-chemical organization of human lymphocyte plasma membranes by measuring the steady-state fluorescence anisotropy and the fluorescence decay of 1-(4-trimethylammoniumphenyl)-6-phenyl-1,3,5-hexatriene (TMA-DPH) incorporated in lymphocyte plasma membranes. PAF induced a time-limited and significant increase of the lipid order in the exterior part of the membrane and a decrease in membrane heterogeneity. These changes were blocked in the presence of PAF antagonist L-659,989. The results indicate that the observed changes in the physico-chemical properties of the lymphocyte plasma membranes may be attributed to a PAF-receptor interaction.
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