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Страница 1 от 40 полученные результаты
Amelioration of persistent left ventricular function impairment through increased plasma ascorbate levels following myocardial infarction.
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OBJECTIVE
Percutaneous coronary angioplasty (PCA) has been demonstrated to reduce mortality and morbidity and thereby improve the prognosis of patients undergoing acute myocardial infarctions (AMIs). However, this procedure paradoxically increases the initial damage as the result of a condition
Effects of a novel ascorbate-based protocol on infarct size and ventricle function in acute myocardial infarction patients undergoing percutaneous coronary angioplasty.
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BACKGROUND
This study was designed to test the hypothesis that high-dose ascorbate prior to reperfusion followed by low chronic oral doses ameliorate myocardial reperfusion injury (MRI) in acute myocardial infarction patients subjected to primary percutaneous coronary angioplasty (PCA).
METHODS
A
The effect of high-dose ascorbate supplementation on plasma lipoprotein(a) levels in patients with premature coronary heart disease.
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OBJECTIVE
To determine the efficacy of high-dose ascorbate supplementation in lowering lipoprotein(a) [Lp(a)] levels in patients with premature coronary heart disease (CHD).
METHODS
Randomized, double-blind, placebo-controlled trial.
METHODS
Outpatient clinic.
METHODS
Forty-four patients with
Serum total free radical trapping ability in acute myocardial infarction.
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Serum total free radical trapping abilities (TRAP experimental) were measured in 15 patients with acute myocardial infarction (AMI) and compared to sex- and age-matched controls. TRAP experimental values were significantly lower (p less than 0.01) in the AMI group. Theoretical trapping abilities
Lipid peroxidation and antioxidant status following thrombolytic therapy for acute myocardial infarction.
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We have investigated the timescale of increased lipid peroxidation following successful early thrombolytic therapy for acute myocardial infarction and report for the first time reciprocal changes in plasma chain-breaking antioxidants. Sixty-seven patients were recruited following a first acute
[Efficacy of various antioxidants in experimental ischemia and myocardial infarct in the rat].
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Complex of vitamins E and C showed the most effective antinecrotic action in rats with simulated myocardial infarction in series of antioxidants studied: ascorbate, alpha-tocopherol, quercetine, derivatives of o-benzoquinone OBQ2 and OBQ3. Stabilization of lipid peroxidation in cardiomyocytes,
Oxidative stress parameters in erythrocytes of post-reperfused patients with myocardial infarction.
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The effect of reperfusion of patients with myocardial infarction on the levels of some anti-oxidant enzymes, total thiols, malondialdehyde formation in erythrocytes and plasma ascorbate levels have been investigated. Significantly decreased activities of catalase and superoxide dismutase and
Photochemiluminescent detection of antiradical activity; III: A simple assay of ascorbate in blood plasma.
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A simple procedure to determine the ascorbate in blood plasma was elaborated based on a temporary inhibition of the photo-induced, O(-.)2-mediated, chemiluminescence emanating from oxidation of luminol. To remove the interferences, mainly from urate, a simple enzyme-free one-step method for plasma
Ambient PM2.5 and risk of emergency room visits for myocardial infarction: impact of regional PM2.5 oxidative potential: a case-crossover study.
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BACKGROUND
Regional differences in the oxidative potential of fine particulate air pollution (PM2.5) may modify its impact on the risk of myocardial infarction.
METHODS
A case-crossover study was conducted in 16 cities in Ontario, Canada to evaluate the impact of regional PM2.5 oxidative potential
Vitamin C deficiency and risk of myocardial infarction: prospective population study of men from eastern Finland.
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OBJECTIVE
To examine the association between plasma vitamin C concentrations and the risk of acute myocardial infarction.
METHODS
Prospective population study.
METHODS
Eastern Finland.
METHODS
1605 randomly selected men aged 42, 48, 54, or 60 who did not have either symptomatic coronary heart
Effect of disodium EDTA chelation regimen on cardiovascular events in patients with previous myocardial infarction: the TACT randomized trial.
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OBJECTIVE
Chelation therapy with disodium EDTA has been used for more than 50 years to treat atherosclerosis without proof of efficacy.
OBJECTIVE
To determine if an EDTA-based chelation regimen reduces cardiovascular events.
METHODS
Double-blind, placebo-controlled, 2 × 2 factorial randomized trial
Mechanisms of reoxygenation injury in myocardial infarction: implications of a myoglobin redox cycle.
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The addition of ascorbate to ischemic rat hearts prevents the myocardial damage associated with reoxygenation. H2O2 oxidizes myoglobin (Mb+2) to higher oxidation states (Mb+4 and Mb+5) which are rapidly reduced by ascorbate. It is proposed that the operation of a myoglobin redox cycle, in which H2O2
Supplementation with vitamin E but not with vitamin C lowers lipid peroxidation in vivo in mildly hypercholesterolemic men.
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Although the use of vitamin E supplements has been associated with a reduction in coronary events, assumed to be due to lowered lipid peroxidation, there are no previous long-term clinical trials into the effects of vitamin C or E supplementation on lipid peroxidation in vivo. Here, we have studied
The relevance of malondialdehyde as a biochemical index of lipid peroxidation of postischemic tissues in the rat and human beings.
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By using a recently developed ion-pairing high-performance liquid chromatographic method for the direct determination of malondialdehyde (MDA) and several other acid-soluble low-mol-wt compounds (ascorbate, oxypurines, nucleosides, nicotinic coenzymes, high-energy phosphates), the variations of
Primenenie askorbata litiia v kachestve tserebroprotektivnogo sredstva na modeli ishemicheskogo insul'ta.
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