Linked Life Data

9287465

Source:http://linkedlifedata.com/resource/pubmed/id/9287465

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1997-10-3
pubmed:abstractText
The four 2'-deoxyribonucleosides were gamma-irradiated or were aerobically treated with Fenton-type-reagents, Fe(II)-EDTA or a renal carcinogen Fe(II)-nitrilotriacetic acid (NTA) under the neutral conditions. The reaction mixtures were immediately analyzed by reverse-phase HPLC. Major products detected were 2-hydroxydeoxyadenosine (2-OH-dA), 8,5'-cyclodeoxyadenosine (cyclo-dA), 8-hydroxydeoxyadenosine (8-OH-dA). 5-formyldeoxyuridine (5-CHO-dU), 5-hydroxydeoxycytidine (5-OH-dC), 8-hydroxydeoxyguanosine (8-OH-dG), 8,5'-cyclodeoxyguanosine (cyclo-dG), and glyoxal and its adduct with dG. Ratio of these oxidized products were dramatically changed depending upon the agents used. For example, 2-OH-dA was a modified nucleoside produced most efficiently by Fe(II)-EDTA, while 5-CHO-dU and 5-OH-dC were the major products by the Fe(II)-NTA treatment and gamma-irradiation, respectively. Glyoxal itself was estimated to be produced most frequently (13 folds of 8-OH-dG) when treated with Fe(II)-EDTA, but its formation was not detected by the treatment with Fe(II)-NTA or by gamma-irradiation. 8-OH-dA was not produced by Fe-EDTA or Fe-NTA but was produced by gamma-irradiation. In contrast, 2-OH-dA was not produced by gamma-irradiation. These results suggest that triphosphates of 2-OH-dA, cyclo-dA, 8-OH-dA, cyclo-dG, 5-CHO-dU, 5-OH-dC, and glyoxal-dG as well as 8-OH-dG may be produced in cells with different ratio by various types of oxidative stress and involved in mutagenesis and carcinogenesis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0449-3060
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
121-31
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Comparison of oxidation products from DNA components by gamma-irradiation and Fenton-type reactions.
pubmed:affiliation
Department of Health Policy and Management, University of Occupational and Environmental Health, Kitakyushu, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't