melatonin/احتشاء

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Pre-treatment with melatonin reduces volume of cerebral infarction in a permanent middle cerebral artery occlusion stroke model in the rat.

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We investigated whether pre-treatment with melatonin, a potent free radical scavenger and antioxidant, would protect against permanent focal cerebral ischemia without reperfusion in a rat middle cerebral artery occlusion (MCAO) model. A single dose of melatonin at 5, 15, or 50 mg/kg or the vehicle

Cytoprotection by melatonin and growth hormone in early rat myocardial infarction as revealed by Feulgen DNA staining.

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OBJECTIVE To examine the cytoprotective effect of melatonin or recombinant human growth hormone (hGH) on the early phase of a running myocardial infarction in rats by using the Feulgen staining. METHODS Rats were subjected to surgical ligature of the left coronary artery or its sham-operation and

Higher Serum Melatonin Levels during the First Week of Malignant Middle Cerebral Artery Infarction in Non-Surviving Patients.

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The activation of different physiopathological pathways (neuroinflammation, apoptosis, and oxidation) can lead to secondary brain injury in ischemic stroke, and in animal models the administration of melatonin has reduced that secondary injury. Lower levels of serum melatonin were

Melatonin does not affect oxidative/inflammatory biomarkers in a closed-chest porcine model of acute myocardial infarction.

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OBJECTIVE To test whether melatonin reduces oxidative and inflammatory biomarkers in a closed-chest porcine model of acute myocardial infarction. METHODS Twenty pigs were randomized to receive a total dosage of 200 mg (0.4 mg/ml) of melatonin, or placebo immediately prior to reperfusion of a

Usefulness of intraplatelet melatonin levels to predict angiographic no-reflow after primary percutaneous coronary intervention in patients with ST-segment elevation myocardial infarction.

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Platelet aggregates appear to have a pathogenic role in the no-reflow phenomenon, which is associated with impaired clinical outcome in patients with ST-segment elevation myocardial infarction (STEMI). Melatonin, a hormone that plays a major role in biological circadian rhythms, is present in human

Prognostic value of nocturnal melatonin levels as a novel marker in patients with ST-segment elevation myocardial infarction.

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We evaluated the possible relation between circulating levels of nocturnal melatonin, C-reactive protein, and the development of adverse cardiovascular events in patients with ST-segment elevation myocardial infarction. Patients who had developed adverse events during follow-up had significantly

Serum melatonin levels are associated with mortality in patients with malignant middle cerebral artery infarction.

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Objectives Lower serum melatonin levels are found in patients with ischaemic stroke compared with healthy controls. This study aimed to determine whether serum melatonin levels are associated with peroxidation status, antioxidant status, and mortality in patients with ischaemic stroke. Methods

Decreased level of melatonin in serum predicts left ventricular remodelling after acute myocardial infarction.

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As experimental studies suggest that melatonin is cardioprotective after myocardial infarction (MI), this study sought to investigate the relationships between circulating levels of melatonin and left ventricular (LV) remodelling in patients after acute MI. This prospective study included 161

The effect of myocardial infarction on the synthesis, concentration and receptor expression of endogenous melatonin.

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We examined the time course of changes in the synthesis and levels of endogenous melatonin and in the expression of MT(1) and MT(2) melatonin receptors 1 day, 2 and 4 wk after myocardial infarction (MI) in rats. MI was produced by ligation of the left anterior descending coronary artery.

Myocardial ischemia-reperfusion in rats: reduction of infarct size by either supplemental physiological or pharmacological doses of melatonin.

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Myocardial ischemia-reperfusion (I/R) represents a clinically relevant problem associated with thrombolysis, angioplasty and coronary bypass surgery. I/R injury is believed to be a consequence of free radical generation in the heart especially during the period of reperfusion. The pineal secretory

Light/dark patterns of soluble vascular cell adhesion molecule-1 in relation to melatonin in patients with ST-segment elevation myocardial infarction.

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Elevated levels of soluble cellular adhesion molecules have been reported in patients with acute coronary syndromes. Likewise, a relation between decreased nocturnal melatonin levels and coronary artery disease has been suggested. The aim of the present study was to investigate the day-night

Comparison of the Effects of Melatonin and Oxazepam on Anxiety Levels and Sleep Quality in Patients With ST-Segment-Elevation Myocardial Infarction Following Primary Percutaneous Coronary Intervention: A Randomized Clinical Trial.

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BACKGROUND Anxiety and sleep disorders are prevalent problems in patients presenting with ST-segment-elevation myocardial infarction (STEMI). Usually, these problems are managed by benzodiazepines, which-albeit effective-could cause adverse effects and drug interaction. OBJECTIVE This study was

Function of the hypothalamo-neurohypophysial system in rats with myocardial infarction is modified by melatonin.

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BACKGROUND Pineal and melatonin interactions with the hypothalamo-neurohypophysial system are well documented. In addition, vasopressin and oxytocin secretion are known to be part of the neuroendocrine response to chronic heart failure evoked by myocardial infarction. The present study was

Melatonin reduces infarction volume in a photothrombotic stroke model in the wild-type but not cyclooxygenase-1-gene knockout mice.

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Cyclooxygenase (COX)-2 plays a harmful role in cerebral ischemic/reperfusion injury, but the role of COX-1 is uncertain. In the present study, cerebral infarct was induced by photothrombosis. Intraperitoneal injections of melatonin at 15 g/kg or its vehicle were made at 0.5 hr before stroke and 24

A unicenter, randomized, double-blind, parallel-group, placebo-controlled study of Melatonin as an Adjunct in patients with acute myocaRdial Infarction undergoing primary Angioplasty The Melatonin Adjunct in the acute myocaRdial Infarction treated with Angioplasty (MARIA) trial: study design and rationale.

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BACKGROUND Experimental studies have documented the beneficial effects of the endogenously produced antioxidant, melatonin, in reducing tissue damage and limiting cardiac pathophysiology in models of experimental ischemia-reperfusion. Melatonin confers cardioprotection against ischemia-reperfusion

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