Gamma interferon is able to enhance the oxidative metabolism of human neutrophils.
The oxidative metabolism of human neutrophils has been studied after incubation of the cells with recombinant interferon-y. Neutrophils incubated for 2-4 hours with 2-50 U/ml recombinant interferon-y undergo a higher respiratory burst measured both as Oz consumption and Oz- production when stimulated with formyl-methionyl-leucyl-phenylalanine, Concanavalin A or phorbol myristate acetate. The potentiating effect of interferon-y requires more than one hour of incubation, is optimal at 20-50 U/ml and depends on the presence of serum in the incubation medium. The interferon effect depends on new protein synthesis. Cycloheximide at doses which do not alter the respiratory response of normal cells completely prevents the potentiating effect of interferon.
D003208:Concanavalin A / Q000494:pharmacology; D003513:Cycloheximide / Q000494:pharmacology; D004357:Drug Synergism; D006801:Humans; D066298:In Vitro Techniques; D007371:Interferon-gamma / Q000494:pharmacology*; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D009504:Neutrophils / Q000187:drug effects* / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects; D011994:Recombinant Proteins / Q000494:pharmacology; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
D011994:Recombinant Proteins; D003208:Concanavalin A; D009240:N-Formylmethionine Leucyl-Phenylalanine; D007371:Interferon-gamma; D003513:Cycloheximide; D013755:Tetradecanoylphorbol Acetate