Linked Life Data

6151126

Source:http://linkedlifedata.com/resource/pubmed/id/6151126

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1985-2-6
pubmed:abstractText
The effect of somatostatin (SRIF) analogs on the secretion of radioimmunoassayable SRIF (SRIF-LI) was studied in the model system of fetal rat hypothalamus cells maintained in long-term, primary dispersed culture. These experiments exploited the biologic activity of certain synthetic SRIFs which cross-react poorly in our standard RIA for SRIF. Carbachol-stimulated SRIF-LI secretion was suppressed by [DTrp8]-SRIF-14, [DTrp22]-SRIF-28 and the octapeptide, des-AA1,2,4,5,12,13[DTrp8]-SRIF. Effective concentrations of synthetic analogs were at or below 1 nM. des-Trp8-SRIF-14, an analog inactive in all other SRIF biological assays, was similarly ineffective in this assay system at doses up to 10 nM. Following removal of peptide by washing, peptide-treated and control cells responded similarly to depolarization with high potassium buffer. The data demonstrate a direct action of SRIF analogs on the hypothalamus to suppress SRIF-LI release and are consistent with the possibility that an endogenous peptide participates in 'ultrashortloop' negative feedback control of its own secretion in the intact animal.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0028-3835
pubmed:author
pubmed:issnType
Print
pubmed:volume
39
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
397-402
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Somatostatin analogs inhibit somatostatin secretion from cultured hypothalamus cells.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't