Linked Life Data

19224536

Source:http://linkedlifedata.com/resource/pubmed/id/19224536

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2009-3-25
pubmed:abstractText
Peroxisome proliferator-activated receptors delta (PPARdelta) is known to be expressed ubiquitously, and the predominant PPAR subtype of cardiac cells. However, relatively less is known regarding the role of PPARdelta in cardiac cells except that PPARdelta ligand treatment protects cardiac hypertrophy by inhibiting NF-kappaB activation. Thus, in the present study, we examined the effect of selective PPARdelta ligand L-165041 on angiotensin II (AngII) induced cardiac hypertrophy and its underlying mechanism using cardiomyocyte. According to our data, L-165041 (10 microM) inhibited AngII-induced [(3)H] leucine incorporation, induction of the fetal gene atrial natriuretic factor (ANF) and increase of cardiomyocyte size. Previous studies have implicated the activation of focal adhesion kinase (FAK) in the progress of cardiomyocyte hypertrophy. L-165041 pretreatment significantly inhibited AngII-induced intracellular Ca(2+) increase and subsequent phosphorylation of FAK. Further experiment using Ca(2+) ionophore A23187 confirmed that Ca(2+) induced FAK phosphorylation, and this was also blocked by L-165041 pretreatment. In addition, overexpression of PPARdelta using adenovirus significantly inhibited AngII-induced intracellular Ca(2+) increase and FAK expression, while PPARdelta siRNA treatment abolished the effect of L-165041. These data indicate that PPARdelta ligand L-165041 inhibits AngII induced cardiac hypertrophy by suppressing intracellular Ca(2+)/FAK/ERK signaling pathway in a PPARdelta dependent mechanism.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1097-4644
pubmed:author
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
106
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
823-34
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
PPARdelta activation inhibits angiotensin II induced cardiomyocyte hypertrophy by suppressing intracellular Ca2+ signaling pathway.
pubmed:affiliation
Division of Cardiovascular and Rare Diseases, Center for Biomedical Sciences, National Institute of Health, Seoul, Korea.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't