Linked Life Data

7999028

Source:http://linkedlifedata.com/resource/pubmed/id/7999028

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1995-1-17
pubmed:abstractText
Thyrotropin, by binding its specific receptor on the plasma membrane of the thyrocyte, regulates thyroid function and differentiation. In FRTL5 cells, thyrotropin down-regulates the thyrotropin receptor (TSHr) promoter activity and induces the transcription of the alpha form of thyroid hormone receptor (TR-alpha 1). In this study we show that the thyrotropin receptor down-regulation, induced by thyrotropin, is mediated by TR-alpha 1. The thyroid hormone receptor binds, in vitro, the thyrotropin receptor minimal promoter and inhibits promoter activity in cotransfections experiments in CV 1 cells. The inhibition is achieved only in the presence of the thyroid hormone. The TSHr promoter mutated in the thyroid hormone receptor binding site does not bind TR, in vitro, and its activity is not inhibited, in cotransfection experiments, in CV 1 cells. The same mutation abolishes the TSH mediated down-regulation of the TSHr promoter activity in FRTL5 thyroid cells. These results support the hypothesis of a regulatory short loop of thyroid hormone in thyroid cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0006-291X
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
205
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
230-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
The thyroid hormone inhibits the thyrotropin receptor promoter activity: evidence for a short loop regulation.
pubmed:affiliation
Istituto di Ricerche Farmacologiche Mario Negri, Consorzio Mario Negri Sud, S.Maria Imbaro, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't