Linked Life Data

18159970

Source:http://linkedlifedata.com/resource/pubmed/id/18159970

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2007-12-27
pubmed:abstractText
Peroxidation products formed from polyunsaturated lipids have DNA damaging potential. 4-oxo-2-hexenal (4-OHE), generated by the oxidation of omega-3 fatty acids, has been demonstrated to be mutagenic in vitro as assessed in the Ames test. To examine the carcinogenic risk of 4-OHE in vivo, initiation activity was investigated in a five-week liver assay, established to be effective for screening of carcinogenic potential of mutagens. Seven-week-old male F344 rats underwent two-thirds partial hepatectomy (PH) and were administered 4-OHE intragastrically at doses of 128, 80, 64, 40, 32, 20, or 0 mg/kg body weight (b.w.) at 18 hours thereafter, then being fed on diet containing 0.015% 2-acetylaminofluorene from weeks 2 to 4. All rats were given with 0.8 ml/kg b.w. CCl4 at week 3. At week 5, all survivors were sacrificed and initiation activity was assessed with reference to induction of glutathione S-transferase placental form (GST-P) positive foci in the liver. Mortality was significantly increased to 72.7% in the 128 mg/kg b.w. dose group compared with 0.9% in the control group. However, the average number of GST-P positive foci in the "128" dose group was 3.26-/+1.66 foci/cm2, not significantly different from the control value (2.78?1.33). Areas of GST-P positive foci were also similar (1.11-/+0.5 and 1.53-/+1.33 mm2/cm2 in "128" and the control groups, respectively). These results showed 4-OHE to have no significant initiation activity in.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1513-7368
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
372-4
pubmed:meshHeading
pubmed:articleTitle
Lack of initiation activity of 4-oxo-2-hexenal, a peroxidation product generated from omega-3 polyunsaturated fatty acids, in an in vivo five-week liver assay.
pubmed:affiliation
Division of Oncological Pathology, Aichi Cancer Center Research Institute, 1-1 Kanokoden, Chikusa-ku, Nagoya 464-8681, Japan.
pubmed:publicationType
Journal Article, Evaluation Studies