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. 1988 Jun 15;252(3):649–653. doi: 10.1042/bj2520649

Hydroxyl-radical-induced iron-catalysed degradation of 2-deoxyribose. Quantitative determination of malondialdehyde.

K H Cheeseman 1, A Beavis 1, H Esterbauer 1
PMCID: PMC1149197  PMID: 3421915

Abstract

The degradation of 2-deoxyribose to thiobarbituric acid-reactive material was investigated with two hydroxyl-radical-generating systems: (i) a defined gamma-radiolysis method and (ii) incubation with FeSO4 in phosphate buffer. In each case the thiobarbituric acid-reactive material can be accounted for by malondialdehyde, as measured by an h.p.l.c. method for free malondialdehyde. In the radiolysis system there is a large post-irradiation increase in free malondialdehyde if iron ions are added to the samples. It is proposed that this is due to iron ions catalysing the formation of hydroxyl radicals from radiolytically generated H2O2 as well as stimulating the breakdown of an intermediate deoxyribose degradation product. A mechanism for the formation of malondialdehyde during deoxyribose degradation is proposed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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