Linked Life Data

1897248

Source:http://linkedlifedata.com/resource/pubmed/id/1897248

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1991-10-24
pubmed:abstractText
1. The effects of neonatal exposure to Aroclor 1254 (100 mumol/kg) on the metabolism of testosterone by adult male and female rats were determined by comparing their hepatic microsomal testosterone hydroxylase activities at 60, 90 and 120 days after the initial exposure. 2. The most pronounced effects in male rats were observed 90 days after treatment with Aroclor 1254, whereas in female rats the major changes in testosterone hydroxylase activities were observed after 60 days. 3. Ninety-day-old male rats neonatally treated with Aroclor 1254 exhibited decreased basal testosterone 7 alpha-hydroxylase and increased basal testosterone 16 alpha-, 2 alpha- and 15 beta-hydroxylase activities and androstenedione formation. In addition, the Aroclor 1254-mediated induction of testosterone 7 alpha- and 6 alpha-hydroxylase activities and androstenedione formation was decreased, and that of testosterone 2 beta- and 15 beta-hydroxylase activities was increased. 4. Sixty-day-old female rats exposed neonatally to Aroclor 1254 exhibited increased basal testosterone 16 alpha-, 2 beta-, 6 alpha- and 15 beta-hydroxylase activities and androstenedione formation, and increased Aroclor 1254-induced metabolism of testosterone at all positions except 16 alpha and 2 alpha. 5. Changes in testosterone hydroxylase activities indicative of permanent damage (or imprinting) in androgen metabolism, i.e. altered activities in 120-day-old animals, were observed only in male rats. These activities included basal testosterone 6 beta-, 16 alpha- and 2 alpha-hydroxylase activities and androstenedione formation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0049-8254
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
481-9
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Neonatal exposure to Aroclor 1254: effects on adult hepatic testosterone hydroxylase activities.
pubmed:affiliation
Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine, Texas A&M University, College Station 77843.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't