Linked Life Data

455739

Source:http://linkedlifedata.com/resource/pubmed/id/455739

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1979-9-17
pubmed:abstractText
In five adult patients with Klinefelter's syndrome and two with Sertoli-cell-only syndrome, exogenous administration of 17 beta-oestradiol, resulting in a sustained and prolonged elevation of circulating oestrogen levels, had a biphasic effect on LH release. After an initial decrease, a dramatic rise in peripheral levels of LH (positive feedback) was observed in all patients. The timing and magnitude of the induced LH surge was similar to that observed in postmenopausal women after administration of large doses of Ethinyloestradiol. A similar positive feedback effect on the secretion of FSH could not be demonstrated. In two patients with the Sertoli-cell-only syndrome, oestrogen treatment induced marked variations in serum testosterone levels, which appeared to be related to the LH changes. Similar changes were not present in patients with Klinefelter's syndrome, indicating a decrease in the sensitivity of the testicular Leydig cell. These experiments demonstrate that positive feedback between oestrogen and luteinizing hormone is present in the adult human male.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0300-0664
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
235-42
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Presence of positive feedback between oestrogen and LH in patients with Klinefelter's syndrome, and Sertoli-cell-only syndrome.
pubmed:publicationType
Journal Article