Linked Life Data

2982107

Source:http://linkedlifedata.com/resource/pubmed/id/2982107

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6002
pubmed:dateCreated
1985-3-19
pubmed:abstractText
Growth hormone releasing factors (GRFs) have been isolated from human pancreatic tumours (hGRF) and rat hypothalamus (rhGRF). The response to GRF at the pituitary level can be modulated by other factors, including glucocorticoids, thyroid hormones, somatostatin and other neuropeptides and somatomedins. Glucocorticoids enhance GRF-induced growth hormone (GH) secretion in primary cultures of rat anterior pituitary cells, and the synthetic glucocorticoid dexamethasone has recently been shown to increase the amounts of GH released in freely moving rats in response to submaximal doses of intravenous GRF. To investigate whether somatotroph sensitivity to GRF is modulated at its receptor level, we have developed a radioreceptor assay using an iodinated analogue of hGRF as radioligand. We report here that the relative binding affinities of rGRF, hGRF and the two analogues are correlated with their in vitro biological potencies. Further, the number of GRF binding sites is drastically decreased in cells deprived of glucocorticoids either in vivo or in vitro.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0028-0836
pubmed:author
pubmed:issnType
Print
pubmed:volume
313
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
487-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:articleTitle
Binding sites for growth hormone releasing factor on rat anterior pituitary cells.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't