Van der Zee J, Dubbelman TM, van Steveninck J. The role of hydroxyl radicals in the degradation of DNA by ozone.
FREE RADICAL RESEARCH COMMUNICATIONS 1987;
2:279-84. [PMID:
2849585 DOI:
10.3109/10715768709065292]
[Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The degradation of the nucleotides dAMP, dGMP, dCMP and dTMP and of calf thymus DNA by ozone was studied. In all cases both base and sugar moiety were degraded. Furthermore, strand breaks were induced in calf thymus DNA. Hydroxyl radicals were probably involved in the oxidation of the base in dAMP and of the deoxyribose ring, but not in the degradation of the other bases. This indicates that ozone-induced DNA damage proceeds both directly via ozone molecules and indirectly via hydroxyl radicals.
Collapse