Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts

Detalhes bibliográficos
Autor(a) principal: Cao,Yong
Data de Publicação: 2013
Outros Autores: Wang,Lie, Chen,Hong, Lv,Zhiqian
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Cardiovascular Surgery (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382013000100009
Resumo: OBJECTIVE: A simple method to reduce the ischemia/reperfusion injury that can accompany cardiac surgery would have great clinical value. This study was to investigate the effect of hyperosmotic perfusion on ischemia/reperfusion injury in isolated perfused rat hearts. METHOD: Forty male Sprague-Dawley rats were randomly divided either to have their isolated hearts perfused with normal osmotic buffer or buffer made hyperosmotic by addition of glucose. Hearts were then subjected to 30 min ischemia followed by 30 min reperfusion. Coronary flow, time to ischemic arrest, reperfusion arrhythmia, and ventricular function were recorded. Creatine phosphokinase leakage into the coronary artery, and myocardial content and activity of superoxide dismutase and catalase were also examined. RESULTS: Rat hearts with hyperosmotic perfusion showed higher coronary flow, a prolonged time to ischemic arrest (10.60 vs. 5.63 min, P<0.005), a lower reperfusion arrthythmia score (3.2 vs. 5.3, P<0.001), better ventricular function, and less creatine phosphokinase leakage (340.1 vs. 861.9, P<0.001) than normal osmotic controls. Myocardial catalase content and activity were increased significantly (1435 vs. 917 U/g wet weight, P<0.001) in hearts perfused with hyperosmotic solution in comparison to the normal osmotic controls. CONCLUSION: Pretreatment with hyperosmotic perfusion in normal rat hearts, which is attributed partly to the increased antioxidative activity, could provide beneficial effects from ischemia and reperfusion-induced injury by increasing coronary flow, and decreasing reperfusion arrhythmia.
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spelling Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat heartsIschemiaReperfusion injuryMyocardial infarctionOBJECTIVE: A simple method to reduce the ischemia/reperfusion injury that can accompany cardiac surgery would have great clinical value. This study was to investigate the effect of hyperosmotic perfusion on ischemia/reperfusion injury in isolated perfused rat hearts. METHOD: Forty male Sprague-Dawley rats were randomly divided either to have their isolated hearts perfused with normal osmotic buffer or buffer made hyperosmotic by addition of glucose. Hearts were then subjected to 30 min ischemia followed by 30 min reperfusion. Coronary flow, time to ischemic arrest, reperfusion arrhythmia, and ventricular function were recorded. Creatine phosphokinase leakage into the coronary artery, and myocardial content and activity of superoxide dismutase and catalase were also examined. RESULTS: Rat hearts with hyperosmotic perfusion showed higher coronary flow, a prolonged time to ischemic arrest (10.60 vs. 5.63 min, P<0.005), a lower reperfusion arrthythmia score (3.2 vs. 5.3, P<0.001), better ventricular function, and less creatine phosphokinase leakage (340.1 vs. 861.9, P<0.001) than normal osmotic controls. Myocardial catalase content and activity were increased significantly (1435 vs. 917 U/g wet weight, P<0.001) in hearts perfused with hyperosmotic solution in comparison to the normal osmotic controls. CONCLUSION: Pretreatment with hyperosmotic perfusion in normal rat hearts, which is attributed partly to the increased antioxidative activity, could provide beneficial effects from ischemia and reperfusion-induced injury by increasing coronary flow, and decreasing reperfusion arrhythmia.Sociedade Brasileira de Cirurgia Cardiovascular2013-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382013000100009Brazilian Journal of Cardiovascular Surgery v.28 n.1 2013reponame:Brazilian Journal of Cardiovascular Surgery (Online)instname:Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)instacron:SBCCV10.5935/1678-9741.20130009info:eu-repo/semantics/openAccessCao,YongWang,LieChen,HongLv,Zhiqianeng2013-05-28T00:00:00Zoai:scielo:S0102-76382013000100009Revistahttp://www.rbccv.org.br/https://old.scielo.br/oai/scielo-oai.php||rosangela.monteiro@incor.usp.br|| domingo@braile.com.br|| brandau@braile.com.br1678-97410102-7638opendoar:2013-05-28T00:00Brazilian Journal of Cardiovascular Surgery (Online) - Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)false
dc.title.none.fl_str_mv Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
title Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
spellingShingle Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
Cao,Yong
Ischemia
Reperfusion injury
Myocardial infarction
title_short Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
title_full Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
title_fullStr Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
title_full_unstemmed Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
title_sort Beneficial effects of hyperosmotic perfusion in the myocardium after ischemia/reperfusion injury in isolated rat hearts
author Cao,Yong
author_facet Cao,Yong
Wang,Lie
Chen,Hong
Lv,Zhiqian
author_role author
author2 Wang,Lie
Chen,Hong
Lv,Zhiqian
author2_role author
author
author
dc.contributor.author.fl_str_mv Cao,Yong
Wang,Lie
Chen,Hong
Lv,Zhiqian
dc.subject.por.fl_str_mv Ischemia
Reperfusion injury
Myocardial infarction
topic Ischemia
Reperfusion injury
Myocardial infarction
description OBJECTIVE: A simple method to reduce the ischemia/reperfusion injury that can accompany cardiac surgery would have great clinical value. This study was to investigate the effect of hyperosmotic perfusion on ischemia/reperfusion injury in isolated perfused rat hearts. METHOD: Forty male Sprague-Dawley rats were randomly divided either to have their isolated hearts perfused with normal osmotic buffer or buffer made hyperosmotic by addition of glucose. Hearts were then subjected to 30 min ischemia followed by 30 min reperfusion. Coronary flow, time to ischemic arrest, reperfusion arrhythmia, and ventricular function were recorded. Creatine phosphokinase leakage into the coronary artery, and myocardial content and activity of superoxide dismutase and catalase were also examined. RESULTS: Rat hearts with hyperosmotic perfusion showed higher coronary flow, a prolonged time to ischemic arrest (10.60 vs. 5.63 min, P<0.005), a lower reperfusion arrthythmia score (3.2 vs. 5.3, P<0.001), better ventricular function, and less creatine phosphokinase leakage (340.1 vs. 861.9, P<0.001) than normal osmotic controls. Myocardial catalase content and activity were increased significantly (1435 vs. 917 U/g wet weight, P<0.001) in hearts perfused with hyperosmotic solution in comparison to the normal osmotic controls. CONCLUSION: Pretreatment with hyperosmotic perfusion in normal rat hearts, which is attributed partly to the increased antioxidative activity, could provide beneficial effects from ischemia and reperfusion-induced injury by increasing coronary flow, and decreasing reperfusion arrhythmia.
publishDate 2013
dc.date.none.fl_str_mv 2013-03-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382013000100009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382013000100009
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/1678-9741.20130009
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Cirurgia Cardiovascular
publisher.none.fl_str_mv Sociedade Brasileira de Cirurgia Cardiovascular
dc.source.none.fl_str_mv Brazilian Journal of Cardiovascular Surgery v.28 n.1 2013
reponame:Brazilian Journal of Cardiovascular Surgery (Online)
instname:Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)
instacron:SBCCV
instname_str Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)
instacron_str SBCCV
institution SBCCV
reponame_str Brazilian Journal of Cardiovascular Surgery (Online)
collection Brazilian Journal of Cardiovascular Surgery (Online)
repository.name.fl_str_mv Brazilian Journal of Cardiovascular Surgery (Online) - Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)
repository.mail.fl_str_mv ||rosangela.monteiro@incor.usp.br|| domingo@braile.com.br|| brandau@braile.com.br
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