Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Mutat Res. 1999 Mar 8;424(1-2):9-21.

Hydroxyl radicals and DNA base damage.

Author information

  • 1Département de Recherche Fondamentale sur la Matière Condensée, SCIB/Laboratoire 'Lésions des Acides Nucléiques', CEA/Grenoble, F-38054, Grenoble Cedex 9, France. cadet@drfmc.ceng.cea.fr

Abstract

Modified purine and pyrimidine bases constitute one of the major classes of hydroxyl-radical-mediated DNA damage together with oligonucleotide strand breaks, DNA-protein cross-links and abasic sites. A comprehensive survey of the main available data on both structural and mechanistic aspects of.OH-induced decomposition pathways of both purine and pyrimidine bases of isolated DNA and model compounds is presented. In this respect, detailed information is provided on both thymine and guanine whereas data are not as complete for adenine and cytosine. The second part of the overview is dedicated to the formation of.OH-induced base lesions within cellular DNA and in vivo situations. Before addressing this major point, the main available methods aimed at singling out.OH-mediated base modifications are critically reviewed. Unfortunately, it is clear that the bulk of the chemical and biochemical assays with the exception of the high performance liquid chromatographic-electrochemical detection (HPLC/ECD) method have suffered from major drawbacks. This explains why there are only a few available accurate data concerning both the qualitative and quantitative aspects of the.OH-induced formation of base damage within cellular DNA. Therefore, major efforts should be devoted to the reassessment of the level of oxidative base damage in cellular DNA using appropriate assays including suitable conditions of DNA extraction.

Copyright 1999 Elsevier Science B.V.

PMID:
10064846
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk