Linked Life Data

205251

Source:http://linkedlifedata.com/resource/pubmed/id/205251

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1978-6-12
pubmed:abstractText
The effects of the calcium antagonists ruthenium red and D-600 and the cation ionophore A23187 on steroidogenesis were investigated. Steroidogenesis triggered by corticotrophin and cyclic AMP was inhibited by each of the agents. Incubation of Y-1 cells with an excess of ethyleneglycol-bis-(beta-amino-ethylether)-N,N'-tetraacetic acid (EGTA) abolished the steroidogenic response to corticotrophin while the response to cyclic AMP was unaffected. The ability of ruthenium red and D-600 (1 . 10(-5) M), and A23187 (6 . 10(-6 M) to inhibit a response which does not require the presence of extracellular calcium (cyclic AMP induced steroidogenesis) suggests that they are altering intracellular calcium. Neither of the calcium antagonists nor the cation ionophore inhibited the steroidogenic response to exogenous pregnenolone, thereby suggesting that the cells were still viable. Only when A23187 was used in the presence of a 15-fold increase in extracellular calcium (4.8 mM) was the response to pregnenolone diminished. The data are interpreted as a further indication that, in intact cells, intracellular calcium plays a role in the steroidogenic pathway.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
528
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
409-15
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
Effects of ruthenium red, A23187 and D-600 on steroidogenesis in Y-1 cells.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.