Linked Life Data

3697953

Source:http://linkedlifedata.com/resource/pubmed/id/3697953

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1986-6-24
pubmed:abstractText
The effects of pregnancy on the covalent binding of several carcinogens to DNA were investigated in mice. Non-pregnant or timed-pregnant (18th day of gestation) ICR mice of similar age were treated with benzo[a]pyrene (BP, 200 mumol/kg), safrole (600 mumol/kg), 1'-hydroxysafrole (400 mumol/kg), 4-aminobiphenyl (4-ABP, 800 mumol/kg), or trioctanoin (4 ml/kg) per os. Tissue DNA adduct levels at 24 h after carcinogen treatment were analyzed via a 32P-postlabeling assay. Pregnancy lowered the binding of the ultimate carcinogenic metabolite of BP, 7 beta, 8 alpha-dihydroxy-9 alpha, 10 alpha-epoxy-7,8,9,10-tetrahydrobenzo[a]pyrene (BPDE I), to liver and lung DNA by 29-41%, but not the binding of other metabolites. The binding of safrole and its proximate carcinogen, 1'-hydroxysafrole, to liver and kidney DNA was increased 2.3-3.5 fold. Pregnancy decreased the binding of 4-ABP to liver DNA by approximately 18% but increased its binding to kidney DNA by 67%. The results suggest that exposure to some genotoxic compounds, especially those requiring conjugation reactions for metabolic activation, may be more hazardous during pregnancy than in the non-pregnant state.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0304-3835
pubmed:author
pubmed:issnType
Print
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
43-52
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Differences in the covalent binding of benzo[a]pyrene, safrole, 1'-hydroxysafrole, and 4-aminobiphenyl to DNA of pregnant and non-pregnant mice.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't