Linked Life Data

3829123

Source:http://linkedlifedata.com/resource/pubmed/id/3829123

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1987-5-14
pubmed:abstractText
The effects of the alpha 1-adrenergic agonist phenylephrine and the peptide hormones angiotensin II and arg8-vasopressin on cytoplasmic free calcium concentration were investigated in single rat hepatocytes microinjected with the photoprotein aequorin. Hepatocytes responded to physiological concentrations of the glycogenolytic agonists with a series of repetitive Ca transients. In each transient free Ca rose in 2-3s to above 600 nM from a resting level of 200 nM. Transient duration depended on the agonist and ranged from approximately 7s for phenylephrine to approximately 15s for angiotensin. Transient frequency, but not shape or size, depended on agonist concentration. The period ranged from less than 20s to several minutes. We suggest that the frequency of the Ca transients is the principal determinant of the amplitude of the cellular response to calcium-mobilizing agonists.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0143-4160
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
79-100
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Agonist-induced oscillations in cytoplasmic free calcium concentration in single rat hepatocytes.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't