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- W1569494491 abstract "Nifurtimox and nitrofurantoin are reduced by intact rat liver mitochondria to nitro anion radicals whose autoxidation generates superoxide anion as detected by direct electron spin resonance spectroscopy and by spin-trapping experiments, respectively. Although nitroreduction occurred in the presence of respiratory substrates such as beta-hydroxybutyrate, malate-glutamate, succinate, or endogenous substrates, nitro anion radical formation activity was much greater on addition of exogenous reduced pyridine nucleotides. NAD(P)H generated from endogenous mitochondrial NAD(P)+ by intramitochondrial reactions could not be used for the NAD(P)H nitroreductase reactions unless the mitochondria were solubilized by detergent. In addition, NAD(P)H nitroreductase activity was detected in the crude mitochondrial outer membrane fraction, with a higher activity than in mitoplasts and intact mitochondria. These results provide direct evidence of a nitrofuran reductase activity associated with the mitochondrial outer membrane that is far more important than that of respiratory chain enzymes." @default.
- W1569494491 created "2016-06-24" @default.
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- W1569494491 date "1984-05-01" @default.
- W1569494491 modified "2023-09-27" @default.
- W1569494491 title "Reduction of nifurtimox and nitrofurantoin to free radical metabolites by rat liver mitochondria. Evidence of an outer membrane-located nitroreductase." @default.
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- W1569494491 doi "https://doi.org/10.1016/s0021-9258(20)82140-1" @default.
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