Background: Renal ischemia reperfusion injury may occur in a variety of clinical situations, following a transient drop in total or regional blood flow to the kidney. This study was performed to investigate the protective effects of different antioxidants such as vitamin C, vitamin E, hydrocortisone and combination of these agents against experimental renal ischemia-reperfusion injury....

Introduction: Orexins are novel neuropeptides that are localized in neurons in the lateral hypothalamus. They are implicated in a wide variety of physiological functions. Orexin peptides and receptors are found in many peripheral organs such as kidneys. It has been demonstrated that exogenous orexin-A can induce protective effects against ischemia–reperfusion injury in many organs. The goal ...

Reperfusion injury includes a spectrum of events, such as reperfusion arrhythmias, vascular damage and no-reflow, and myocardial functional stunning. The concept of reperfusion injury remains controversial with many proposed mechanisms when applied to humans, whereas in animal models, there are two main proposed mechanisms: calcium over-load and formation of oxygen free radicals. To prove that ...

BACKGROUND Ischemic stroke (IS) and acute myocardial infarction require emergency reperfusion tissue in order to improve functional outcome. Intra-arterial thrombectomy recently showed very encouraging improvement in IS patients' outcome. However, endovascular methods enhancing reperfusion may expose patients to increase in ischemic reperfusion injury. Experimental evidence indicates that brain...

Ischemic stroke is a debilitating neurological disease most commonly resulting from an occlusion within the cerebral vasculature. Ischemia/reperfusion injury oftentimes consequence of stroke, characterized by oxidative stress, neuroinflammation, and activation surrounding glial cells following restoration blood supply. Astrocytes are regarded as prominent cell in brain and, under pathologic con...

BACKGROUND Nonlethal ischemia and reperfusion reduce ischemia-reperfusion-induced cell death, a phenomenon called ischemic preconditioning. In animal models, this potent endogenous protection is mimicked in vivo by administration of adenosine. In humans, exploitation of ischemic preconditioning is hindered by the lack of an appropriate in vivo model to study this phenomenon. To solve this probl...

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 ...

BACKGROUND It is well known that propofol protects myocardium against myocardial ischemia/reperfusion injury in the rat heart model. The aim of this study was to investigate whether propofol provides a protective effect against a regional myocardial ischemia/reperfusion injury in an in vivo rat heart model after 48 h of reperfusion. METHODS Rats were subjected to 25 min of left coronary arter...

BACKGROUND Skeletal muscle reperfusion injury is mediated by IgM natural antibodies and by complement activation, as shown by the attenuation of reperfusion injury seen in mice with no natural IgM [] and in mice deficient in complement C3 and C4 []. We postulate that tissue, when ischemic, expresses neoantigens to which preformed natural IgM antibodies bind, in turn producing harmful complement...