Linked Life Data

3297645

Source:http://linkedlifedata.com/resource/pubmed/id/3297645

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1987-7-27
pubmed:abstractText
Perifusion of rat pancreatic islets with a physiologic, 6-mM amino acid mixture resulted in typical acute and second phase glucagon secretion over 30 min. At various intervals, islets were acutely fixed and processed for scanning electron microscopy, identification of alpha cells, and measurements of single alpha cell content of calcium (Ca), potassium (K) and sodium (Na) with energy-dispersive x-ray analysis. Biphasic glucagon secretion was attended by corresponding biphasic Ca accumulation and a reciprocal, biphasic suppression of K content and acute phase suppression of Na in alpha cells. All secretory and cellular events were preceded by an evanescent upward spike in alpha cell K at 1 min. These results indicate that alpha cell glucagon secretion in response to amino acid mixtures may be initiated by a K signal and is coupled subsequently to phasic changes in alpha cell Ca content. Fluctuations of alpha cell K and Na appear to relate inversely to Ca, suggesting that transmembrane fluxes of the three cations are interrelated.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0013-7227
pubmed:author
pubmed:issnType
Print
pubmed:volume
121
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
429-31
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Fluctuations of alpha cell calcium, potassium and sodium during amino acid perifusion of rat pancreatic islets.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.