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superoxide dismutase/infarkt
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Leht 1 alates 1454 tulemused
Superoxide dismutase does not cause scar thinning after myocardial infarction.
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Previous studies demonstrated that treatment with superoxide dismutase, a scavenger of superoxide anions, limits the extent of myocardial injury in a canine preparation of regional myocardial ischemia and reperfusion. Little is known, however, about the effects of superoxide dismutase on the healing
Reduction in experimental infarct size by recombinant human superoxide dismutase: insights into the pathophysiology of reperfusion injury.
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To determine the importance of reperfusion injury and the ability of the free-radical scavenger recombinant human superoxide dismutase (h-SOD) to prevent it, open-chest dogs underwent 90 min of proximal circumflex coronary artery occlusion, and only at the moment of reperfusion received either h-SOD
Plasma extracellular superoxide dismutase concentration, allelic variations in the SOD3 gene and risk of myocardial infarction and all-cause mortality in people with type 1 and type 2 diabetes.
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BACKGROUND
Oxidative stress is involved in development of diabetes complications. Extracellular superoxide dismutase (EC-SOD, SOD3) is a major extracellular antioxidant enzyme and is highly expressed in arterial walls. Advanced oxidation protein products (AOPP) and 8-iso-prostaglandin (isoprostane)
Reduction of copper, zinc-superoxide dismutase in knockout mice does not affect edema or infarction volumes and the early release of mitochondrial cytochrome c after permanent focal cerebral ischemia.
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Copper,zinc-superoxide dismutase (SOD1) was shown to be highly protective against ischemia/reperfusion injury in the brain. We have recently reported that SOD1 prevents the release of mitochondrial cytochrome c and subsequent apoptosis after ischemia/reperfusion in mice. To investigate its dose
A single direct injection into the left ventricular wall of an adeno-associated virus 9 (AAV9) vector expressing extracellular superoxide dismutase from the cardiac troponin-T promoter protects mice against myocardial infarction.
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BACKGROUND
Localized administration of a highly efficient gene delivery system in combination with a cardiac-selective promoter may provide a favorable biosafety profile in clinical applications such as coronary artery bypass graft surgery, where regions of myocardium can be readily injected to
Effect of superoxide dismutase on infarct size and postischemic recovery of myocardial contractility and metabolism in dogs.
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The effects of superoxide dismutase treatment on infarct size, postischemic recovery of contractile function and tissue content of high energy phosphates were examined in a canine model of myocardial ischemia and reperfusion. Ischemia was induced by thrombotic occlusion of a coronary artery and
Liposome-entrapped superoxide dismutase ameliorates infarct volume in focal cerebral ischaemia.
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We studied the role of superoxide radicals in the pathogenesis of focal ischaemic brain injury using liposome-entrapped copper-zinc-superoxide dismutase which can penetrate the blood-brain barrier and cell membranes efficiently. Superoxide dismutase activities were significantly elevated in the
Release of superoxide dismutase into cerebrospinal fluid as a marker of brain lesion in acute cerebral infarction.
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OBJECTIVE
Evaluation of biochemical patterns in cerebrospinal fluid may add diagnostic and prognostic information. We tested to determine whether the concentration of superoxide dismutase in cerebrospinal fluid is a marker of brain tissue damage in acute ischemic stroke.
METHODS
We investigated 36
Superoxide dismutase and catalase reduce infarct size in a porcine myocardial occlusion-reperfusion model.
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We investigated if superoxide dismutase and catalase could reduce myocardial infarct size in an open chest occlusion-reperfusion model. Thirty pigs were used for the experiment. The left anterior descending artery was ligated for 60 min followed by a 5 h reperfusion period. After randomisation and
Beneficial effects of coronary venous retroinfusion of superoxide dismutase and catalase on reperfusion arrhythmias, myocardial function, and infarct size in dogs.
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The efficacy of coronary venous retroinfusion of superoxide dismutase and catalase was studied in anesthetized closed chest dogs with 90-min left anterior descending coronary artery (LAD) occlusion followed by 3-h reperfusion. In group A, superoxide dismutase (2.5 mg/kg) and catalase (2.5 mg/kg)
Cold-induced brain edema and infarction are reduced in transgenic mice overexpressing CuZn-superoxide dismutase.
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It has been proposed that oxygen-derived radicals, superoxide in particular, are involved in the alteration of blood-brain barrier permeability and the pathogenesis of brain edema following trauma, ischemia, and reperfusion injury. Using transgenic mice that overexpress the human gene for
[Effect of a highly dispersed copper powder on superoxide dismutase and glutathione peroxidase activities in experimental myocardial infarct].
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Administration of highly dispersed copper powder in a dose 0.2 mg/kg three days before modelled coronary-occlusion myocardial infarction caused transitory increase in activity of antioxidant enzymes--superoxide dismutase and glutathione peroxidase in the necrotic zone of myocardium of rats, and also
The independent effects of oxygen radical scavengers on canine infarct size. Reduction by superoxide dismutase but not catalase.
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Previous studies demonstrated a significant reduction of ultimate infarct size in the canine heart by the combined administration of superoxide dismutase plus catalase. This study was performed to assess the independent effects of each enzyme on ultimate infarct size due to ischemia/reperfusion.
Association of manganese superoxide dismutase Ala16Val polymorphism in the incidence of acute myocardial infarction in the Egyptians.
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Background: Oxidative stress has been implicated in various diseases including atherosclerosis; the most common pathologic process underlying acute myocardial infarction (AMI). The manganese superoxide dismutase (MnSOD) antioxidant enzyme affords the major defense against reactive oxygen
Overexpression of copper/zinc superoxide dismutase in the median preoptic nucleus improves cardiac function after myocardial infarction in the rat.
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Previous reports indicate that overexpression of copper/zinc superoxide dismutase (CuZnSOD), an intracellular superoxide (O2 (•-) ) scavenging enzyme, in the brain subfornical organ improves cardiac function in a mouse model of heart failure (HF). A downstream hypothalamic site, the MnPO, may act as
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