Myocardial ischemia/reperfusion injury affects not only the cardiomyocyte compartment but also all other cellular compartments, and the coronary circulation has a central role in it. Acute myocardial infarction most often arises from atherosclerotic plaque rupture/erosion with superimposed thrombosis (type 1 myocardial infarction). However, in the absence of coronary atherosclerosis, coronary v...

background myocardial injury caused by ischemia-reperfusion leads to cardiac dysfunction, tissue injury and metabolic changes. the production of reactive oxygen species (ros) and lipid peroxidation are accompanied by ischemia-reperfusion injury. objectives the aim of this study was to assess the cardio protective potential effects of crocin in comparison with vitamin e on antioxidant capacity i...

Objective(s): To study the effect of acute and repeated stress on cardioprotection-induced by remote ischemic preconditioning (RIPC).Materials and Methods: RIPC was induced by giving 4 short cycles of ischemia and reperfusion, each consisting of five min. The Langendorff’s apparatus was used to perfuse the isolated rat hearts by subjecti...

In clinical therapy of evolving acute myocardial infarction, coronary reperfusion has proven to be the only way to limit infarct size, provided it occurs soon enough after coronary artery occlusion. However, there is also evidence that reperfusion is accompanied by detrimental manifestations known as ‘reperfusion injury’. Reperfusion injury refers to a causal event associated with reperfusion t...

Acute myocardial infarction (MI) is a major cause of death and disability worldwide. In patients with MI, the treatment of choice for reducing acute myocardial ischemic injury and limiting MI size is timely and effective myocardial reperfusion using either thombolytic therapy or primary percutaneous coronary intervention (PPCI). However, the process of reperfusion can itself induce cardiomyocyt...

Reperfusion is mandatory to salvage ischemic myocardium from infarction, but reperfusion per se contributes to injury and ultimate infarct size. Therefore, cardioprotection beyond that by timely reperfusion is needed to reduce infarct size and improve the prognosis of patients with acute myocardial infarction. The conditioning phenomena provide such cardioprotection, insofar as brief episodes o...

objective(s)ischemia-reperfusion injury (iri) is a leading cause of kidney transplantation failure, and ischemic-preconditioning (ipc) is a protective method against the iri. in the present study, the defensive effect of ipc on rats’ kidney was investigated and more importantly the differences between two genders were appraised.materials and methodsthirty two wistar rats were randomly allocated...

Abstract The consequences of myocardial infarction (MI) are an increasing problem worldwide. Despite spectacular progress in the invasive treatment ischemic heart disease, ability to limit ischemia-reperfusion (I/R) injury remains largely unrealized. Recent studies have shown that stimulation opioid receptors may confer a cardioprotective effect against I/R injury. Levosimendan, inodilator, is ...

A cute thrombotic occlusion of a coronary artery usually produces myocardial ischemia that can result in myocardial infarction if reperfusion is not restored. Reperfusion injury from reintroduction of blood and oxygen into the ischemic area at risk can result in additional myocyte cell death (1,2). Whereas early reperfusion therapy has been shown to reduce infarct size by decreasing ischemic in...

BACKGROUND In recent years, various beneficial roles of human atrial natriuretic peptide (hANP) have been demonstrated in the internal medicine and surgical fields. However, direct myocardial protection by hANP against myocardial ischemic reperfusion injury has been rarely investigated. Thus, we investigated it from aspects of cardiac surgery. METHODS Twenty-four pigs underwent extracorporeal...