نتایج جستجو برای: myocardial ischemic reperfusion injury
تعداد نتایج: 520115 فیلتر نتایج به سال:
Nonanticoagulant heparin inhibits NF-kappaB activation and attenuates myocardial reperfusion injury.
Heparin reduces ischemia-reperfusion injury to myocardium. This effect has been attributed to complement inhibition, but heparin also has other activities that might diminish ischemia-reperfusion. To further probe these mechanisms, we compared heparin or an o-desulfated nonanticoagulant heparin with greatly reduced anticomplement activity. When given at the time of coronary artery reperfusion i...
تاثیر تروگزروتین بر پراکسیداسیون لیپیدی و آسیب بافتی ناشی از آسیب ایسکمی- رپرفیوژن در قلب موش دیابتی
Background: Diabetes is a main risk factor of ischemic heart disease. Troxerutin, a natural bioflavonoid rutin, has many biologic properties, such anti-oxidative and anti-inflammatory effects. The purpose of this study was to investigate the interaction of diabetes with the protective effect of troxerutin on lipid peroxidation and tissue injury induced by myocardial ischemia reperfusi...
background: testicular torsion and detorsion causes reperfusion injury which damages the testicular tissue and affects the quality of sperm. deterioration in the quality of sperm worldwide is the recent scenario and one of its reasons is testicular ischemic/ reperfusion (ir) injury. therefore the present study aims at producing new drugs for the treatment of testicular ir injury. methods: 42 an...
Animal studies have demonstrated that restoration of blood flow to severely ischemic myocardium is a prerequisite for myocardial salvage. However, it has been shown that the restoration of blood flow to ischemic myocardium may be associated with deleterious changes of the myocardium, including arrhythmias, enzyme release, and contractile dysfunction. These changes were considered to be addition...
schemic preconditioning is the one maneuver that has onsistently been shown to reduce myocardial necrosis due o ischemia/reperfusion injury in experimental models (1). rief coronary occlusions of a few minutes to 10 min ollowed by brief reperfusion periods markedly reduce the ize of a subsequent myocardial infarction (MI) induced by longer coronary artery occlusion followed by reperfusion. he a...
Development of thrombolytic therapy as a treatment for myocardial infarction has focused attention on the events that occur upon reperfusion of ischemic myocardial tissue. Although it is well documented that salvage of the ischemic myocardium is dependent upon timely reperfusion, it is likely that the very events critical for survival may, in fact, lead to further tissue injury. A widely recogn...
BACKGROUND Current cardioplegic protection techniques used in pediatric cardiac surgery do not take into consideration age and cyanotic differences. The aim of the present work was to address this question by monitoring clinical outcome, myocardial metabolism, and reperfusion injury in pediatric patients protected by cold-crystalloid cardioplegia. METHODS AND RESULTS Fifty-eight patients (31 ...
Ischemia-reperfusion (IR) cycle in the myocardium is associated with activation of an injurious cascade, thus leading to new myocardial challenges, which account for up to 50% of infarct size. Some evidence implicates reactive oxygen species (ROS) as a probable cause of myocardial injury in prooxidant clinical settings. Damage occurs during both ischemia and post-ischemic reperfusion in animal ...
BACKGROUND The beneficial effects of reperfusion therapies have been limited by the amount of ischemic damage that occurs before reperfusion. To enable development of interventions to reduce cell injury, our research has focused on understanding mechanisms involved in cardiac cell death after ischemia/reperfusion (I/R) injury. In this context, our laboratory has been investigating the role of t...
Therapeutic strategies to protect the ischemic myocardium have been studied extensively. Reperfusion is the definitive treatment for acute coronary syndromes, especially acute myocardial infarction; however, reperfusion has the potential to exacerbate lethal tissue injury, a process termed "reperfusion injury." Ischemia/reperfusion injury may lead to myocardial infarction, cardiac arrhythmias, ...
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