Linked Life Data

15183195

Source:http://linkedlifedata.com/resource/pubmed/id/15183195

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2004-6-8
pubmed:abstractText
4-Hydroxy-2-nonenal (HNE), one of the main aldehydic compounds released during lipid peroxidation, has been proposed to react with DNA bases in cells. Several classes of DNA lesions involving addition of either HNE or its 2,3-epoxide (epox-HNE) have been identified. In the present work, HPLC associated with tandem mass spectrometry was used to determine the pattern of HNE-induced DNA lesions. First, adducts were quantified within isolated DNA treated with HNE under peroxidizing conditions. The 1,N2-propano-2'-deoxyguanosine adduct of HNE (HNE-dGuo) was found to be the major lesion under all conditions studied. 1,N6-Ethenoadenine and 1,N2-ethenoguanine together with their (1,2-dihydroxyheptyl)-substituted derivatives, which all arise from the reaction of epox-HNE with DNA, were produced in significantly lower yields, even in the presence of 20 mM H2O2. The pyrimidopurinone malondialdehyde-2'-deoxyguanosine adduct was also found to be produced, although in very low yield. Similar results were obtained in cultured human monocytes incubated with HNE, because the HNE-dGuo adduct represented more than 95% of the overall adducts to DNA. In addition, the former lesion was poorly repaired, in contrast to 1,N2-ethenoguanine and, to a lesser extent, 1,N6-ethenoadenine. Altogether, these results suggest than HNE-dGuo may represent the best biomarker of the genotoxic effects of HNE.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0891-5849
pubmed:author
pubmed:copyrightInfo
Copyright 2004 Elsevier Inc.
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
62-70
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Predominance of the 1,N2-propano 2'-deoxyguanosine adduct among 4-hydroxy-2-nonenal-induced DNA lesions.
pubmed:affiliation
Laboratoire "Lésions des Acides Nucléiques," Service de Chimie Inorganique et Biologique, CEA/DSM/Département de Recherche Fondamentale sur la Matière Condensée, CEA-Grenoble, 38054 Grenoble Cedex 9, France. tdouki@cea.fr
pubmed:publicationType
Journal Article