| Literature DB >> 21494240 |
Abstract
Exposure of cells and human skin to UVA radiation oxidatively induces damage to DNA that consists mostly of 8-oxo-7,8-dihydroguanine (8-oxoGua), together with relatively minor amounts of oxidized pyrimidine bases and oligonucleotide strand breaks. Singlet oxygen generated by the type II photosensitization mechanism forms 8-oxoGua, with a small contribution by hydroxyl radicals. The mechanisms of UVA-mediated formation of DNA oxidation products indicate the absence of induction of double-strand breaks.Entities:
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Year: 2011 PMID: 21494240 DOI: 10.1038/jid.2011.51
Source DB: PubMed Journal: J Invest Dermatol ISSN: 0022-202X Impact factor: 8.551