1887

Abstract

Summary: When sucrose or acetate was added to washed suspensions of a number of aerobic bacteria, exogenous ferricytochrome was reduced, luminol chemiluminescence was enhanced and the rate of adrenaline auto-oxidation was increased. Superoxide dismutase from bovine erythrocytes inhibited all of there reactions, suggesting that superoxide radicals (O ) are formed during aerobic bacterial metabolism. Superoxide radicals were probably generated during respiratory chain activity because O production by intact bacteria was stimulated by antimycin A and the highest O -producing activity was observed with membrane fractions with a high concentration of cytochromes. Exogenous superoxide dismutase partially inhibited NADH-dependent oxgyen consumption by membrane particles of 22LD.

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1979-08-01
2022-01-28
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