Abstract
Neutrophils stimulated with formylmethionyl-leucylphenylalanine (fMet-Leu-Phe) in the presence of butanol and ethanol formed phosphatidyl alcohols through a phospholipase D mechanism. The alcohols inhibited phosphatidic acid and diradylglycerol (DRG) formation, but did not block inositol 1, 4, 5-trisphosphate release. fMet-Leu-Phe-stimulated superoxide production was inhibited by alcohol concentrations which blocked DRG formation, whereas opsonized-zymosan-stimulated superoxide production was only partially decreased. These results suggest that phospholipase D activation is functionally linked to superoxide production in the human neutrophil.
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