Linked Life Data

3969072

Source:http://linkedlifedata.com/resource/pubmed/id/3969072

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1985-3-21
pubmed:abstractText
Bromobenzene metabolites have been determined in incubations of hepatocytes isolated from untreated, phenobarbital-treated, and beta-naphthoflavone-treated rats. The total formation of bromobenzene metabolites was increased 9-fold in incubations with hepatocytes isolated from phenobarbital-treated rats, and the percentage of total metabolites recovered as bromobenzene-3,4-dihydrodiol and 4-bromocatechol was more than doubled, compared to incubations using hepatocytes from untreated rats. The formation of 2-bromophenol and bromobenzene-2,3-dihydrodiol was increased more than 10-fold in incubations of hepatocytes from beta-naphthoflavone-treated rats, as compared to those of hepatocytes from untreated rats, but recovery of 4-bromocatechol was unchanged. The mechanism of 4-bromocatechol formation from bromobenzene was investigated by examining the incorporation of 18O from 18O2 and H218O into 4-bromocatechol during incubations of bromobenzene with hepatocytes from untreated and phenobarbital-treated rats. Potential metabolic precursor molecules of 4-bromocatechol were also incubated individually with isolated hepatocytes, in order to clarify their roles in 4-bromocatechol formation. The results of these studies show that 4-bromocatechol is formed in intact cells almost exclusively from bromobenzene-3,4-dihydrodiol, rather than from the bromophenols. The bromophenols are, instead, mostly conjugated. The rapid and extensive conjugation of the bromophenols by intact cells may restrict their role as precursors of 4-bromocatechol, while bromobenzene 3,4-dihydrodiol is well converted into 4-bromocatechol by hepatocytes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0026-895X
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
287-95
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1985
pubmed:articleTitle
Bromobenzene metabolism in isolated rat hepatocytes. 18O2 incorporation studies.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S.