Linked Life Data

20863306

Source:http://linkedlifedata.com/resource/pubmed/id/20863306

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2010-9-24
pubmed:abstractText
We used MoCA (Modular Control and Regulation Analysis) to demonstrate in intact beating rat heart that physiological activation of contraction by adrenaline involves the almost perfect parallel activation of both mitochondria and myofibrils by intracellular Ca(2+). This explains the perfect homoeostasis of the energetic intermediate PCr (phosphocreatine) in heart. When using drugs specifically stimulating either supply or demand activities, MoCA helped reveal the very specific mode of regulation of heart contraction energetics. Only activation of myofibrils activity (demand), either by increasing intracellular Ca(2+) concentration or myofibrils sensitivity to Ca(2+), triggers activation of contractile activity. In contrast, the activation of mitochondrial activity (supply) has strictly no effect on contraction, either directly or through PCr changes (intermediate).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1470-8752
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1319-21
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
System analysis of the effect of various drugs on cardiac contraction energetics.
pubmed:affiliation
Résonance Magnétique des Systèmes Biologiques, UMR5536, Centre National de la Recherche Scientifique, Université Victor Segalen, Bordeaux 2, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't