Oxygen-dependent killing of Staphylococcus aureus by human neutrophils

Abstract

Luminol-dependent chemiluminescence was used as a monitor of reactive oxidant generation during phagocytosis of Staphylococcus aureus by human neutrophils. Reactive oxidants play a crucial role in the killing of this organism because: (a) S. aureus was killed most rapidly when the rate of increase of chemiluminescence was greatest; (b) neutrophils which had been activated to generate reactive oxidants by re-aeration of anaerobic suspensions killed this bacterium more efficiently than control suspensions; and (c) neutrophils from a patient with chronic granulomatous disease could neither generate reactive oxidants nor kill S. aureus.