Linked Life Data

2461496

Source:http://linkedlifedata.com/resource/pubmed/id/2461496

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-12-27
pubmed:abstractText
At steady-state the passive fluxes of Na+ and K+ across the cell membrane of a heart cell are exactly matched by active fluxes of the two ions in the opposite direction via the Na-K pump, and the concentrations of Na+ and K+ both within the cell and in the clefts between cells are steady. An alteration of the heart rate (or the rate of stimulation) disrupts this balance because the passive fluxes are affected, and there are changes in pump activity as well as the Na+ and K+ concentrations. A computer model incorporating a cell separated from the bathing medium by a restricted extracellular cleft was devised to investigate these changes further. The model was able to simulate the changes observed with a variety of stimulation protocols as well as the effect of block of the Na-K pump. It is concluded that the changes in Na+ and K+ balance with heart rate can be explained in terms of the known properties of cardiac tissue incorporated into the model.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-5193
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
132
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
15-27
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
A computer simulation of the effect of heart rate on ion concentrations in the heart.
pubmed:affiliation
Department of Physiology, University of Leeds, England.
pubmed:publicationType
Journal Article