Linked Life Data

2925083

Source:http://linkedlifedata.com/resource/pubmed/id/2925083

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1989-5-5
pubmed:abstractText
Involvement of steroid hormones in the occurrence of the ovulatory gonadotropin (GtH) surge was studied in goldfish. Ovariectomized female goldfish were implanted with an empty Silastic capsule or a capsule containing testosterone or estradiol, and kept below 12 degrees for 3 months (Experiment 1). Some of the steroid implanted fish showed a GtH surge which was quite similar to the normal ovulatory GtH surge in response to a water temperature rise from 12 to 20 degrees, whereas no surge was observed in fish with empty capsules. When sexually regressed female goldfish were implanted with the capsules containing testosterone or estradiol and kept at 12 degrees for 6 weeks out of spawning season, the GtH surge was also observed in these fish after the water temperature rise to 20 degrees (Experiment 2). The GtH surge was observed in a larger number of testosterone-implanted fish than in the estradiol-treated fish in both experiments. These results strongly suggest that the high plasma level of testosterone observed before ovulation is an important physiological requisite for the occurrence of the ovulatory GtH surge in goldfish.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0016-6480
pubmed:author
pubmed:issnType
Print
pubmed:volume
73
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
469-76
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Induction of gonadotropin surge by steroid hormone implantation in ovariectomized and sexually regressed female goldfish.
pubmed:affiliation
Department of Fisheries, Faculty of Agriculture, University of Tokyo, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't