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. 1981 Oct 1;199(1):263-5.
doi: 10.1042/bj1990263.

Superoxide-dependent formation of hydroxyl radicals in the presence of iron salts. Detection of 'free' iron in biological systems by using bleomycin-dependent degradation of DNA

J M Gutteridge, D A Rowley, B Halliwell

Superoxide-dependent formation of hydroxyl radicals in the presence of iron salts. Detection of 'free' iron in biological systems by using bleomycin-dependent degradation of DNA

J M Gutteridge et al. Biochem J. .

Abstract

Bleomycin in the presence of iron(II) degrades DNA to form a thiobarbituric acid-reactive product. This has been made the basis of a specific assay method for 'free' iron in biological fluids. Human synovial fluid, human cerebrospinal fluid and rat pleural-exudate fluid were found to contain micromolar concentrations of 'free' iron, which would be sufficient to allow formation of the hydroxyl radical from superoxide and hydrogen peroxide generated in vivo. This assay method does not detect iron bound to transport proteins or to enzymes.

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References

    1. Physiol Rev. 1968 Apr;48(2):311-73 - PubMed
    1. Science. 1974 Aug 9;185(4150):529-31 - PubMed
    1. FEBS Lett. 1978 Feb 1;86(1):139-42 - PubMed
    1. Cell Biol Int Rep. 1978 Mar;2(2):113-28 - PubMed
    1. Science. 1978 Sep 8;201(4359):875-80 - PubMed

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