Linked Life Data

9602422

Source:http://linkedlifedata.com/resource/pubmed/id/9602422

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1998-7-31
pubmed:abstractText
The aim of our study was to characterize the temporal relationship of apoptosis to regional myocardial ischemia and reperfusion and we aimed to determine the effect of ischemia and reperfusion on the distribution of the pro-apoptotic cysteine protease caspase-3 (CPP 32, apopain, Yama) in an in vivo rat model. Male Sprague-Dawley rats (250-400 g) were anesthetized with sodium pentobarbital (65 mg/kg, i.p.), the left external carotid artery was isolated to monitor arterial pressure and a left thoracotomy was performed. Regional myocardial ischemia was induced by occluding the left main coronary artery for 45 min. The heart was reperfused for 0, 60, 120 or 180 min. TUNEL staining of formalin-fixed, paraffin-embedded left ventricle, and DNA fragmentation analysis, showed that apoptosis occurred during 45 min of ischemia alone, but further developed during the 3-h reperfusion period. Immunohistochemical analysis of ischemic/reperfused left ventricle showed caspase-3 levels were substantially elevated and localized in the ischemic/reperfused region, and that caspase-3 co-localized to TUNEL positive myocytes. Therefore, regional myocardial ischemia serves as a stimulus for myocyte apoptosis, and this form of cell death progresses time-dependently after the onset of reperfusion. Our studies implicate caspase-3 to be involved in apoptotic cell death in ischemic/reperfused rat heart.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0022-2828
pubmed:author
pubmed:issnType
Print
pubmed:volume
30
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
733-42
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Co-localization of the cysteine protease caspase-3 with apoptotic myocytes after in vivo myocardial ischemia and reperfusion in the rat.
pubmed:affiliation
Department of Pharmacology, Merck Frosst Centre for Therapeutic Research, Pointe-Claire-Dorval, Quebec, Canada.
pubmed:publicationType
Journal Article