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- W2002131296 abstract "Exposure to zinc fume may cause metal fume fever, an acute reaction characterized by an invasion of neutrophils into the airways. This investigation was conducted to examine the possibility that Zn2+ and ZnO might stimulate the formation of oxygen radicals by human neutrophils. Luminol-amplified chemiluminescence (CL) was monitored during 2 h from human neutrophils exposed to Zn2+ or ZnO. The response was compared to that of other metal ions and to that of endotoxin and phorbol myristate acetate (PMA). Zn2+ (6-50 microM) gradually caused a 2-6-fold increase of CL that reached an optimum after 70- 80 min. By contrast, Cd2+, Cr2+, Cr3+, Fe2+, Fe3+, Ni2+ or Co2+ in corresponding concentrations did not increase the CL. Similar to Zn2+, endotoxin (40-640 micrograms/ml) caused a 2-5-fold increase of CL with an optimum after 70 min, and endotoxin (40 micrograms/ml) together with Zn2+ (50 microM) synergistically increased the CL. ZnO (12-100 micrograms/ml) also augmented CL, with a 1.5-5-fold increase at 25-100 micrograms/ml ZnO but with a time response similar to that found after PMA stimulation, in which CL peaked after 20-40 min incubation. Both Zn(2+)- and ZnO-induced CL was inhibited by manoalide, a phospholipase A2 inhibitor, with IC50 of 0.25 microM and 0.66 microM respectively. These results indicate that Zn2+ and ZnO both stimulates oxygen radical formation in human neutrophils and that this might contribute to the pathogenesis of zinc fume fever." @default.
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- W2002131296 date "1998-02-01" @default.
- W2002131296 modified "2023-10-18" @default.
- W2002131296 title "Novel aspect on metal fume fever: zinc stimulates oxygen radical formation in human neutrophils" @default.
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- W2002131296 doi "https://doi.org/10.1177/096032719801700205" @default.
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