pyridoxine/acidente vascular cerebral

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Homocysteine-lowering treatment with folic acid, cobalamin, and pyridoxine does not reduce blood markers of inflammation, endothelial dysfunction, or hypercoagulability in patients with previous transient ischemic attack or stroke: a randomized substudy of the VITATOPS trial.

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OBJECTIVE Epidemiological and laboratory studies suggest that increasing concentrations of plasma homocysteine (total homocysteine [tHcy]) accelerate cardiovascular disease by promoting vascular inflammation, endothelial dysfunction, and hypercoagulability. METHODS We conducted a randomized

Effectiveness of B vitamins on the control of hypertension and stroke events of SHRSP rats.

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The spontaneously hypertensive stroke-prone rat (SHRSP) is a recognized animal model for the study of severe hypertension and stroke, being characterized by presenting an elevated tissue levels of free radicals. Therefore, this study has the main goal to identify the effect of B vitamins, closely

Sustained homocysteine-lowering effect over time of folic acid-based multivitamin therapy in stroke patients despite increasing folate status in the population.

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OBJECTIVE It is uncertain what impact increasing voluntary folate fortification may be having on the statistical power of randomized trials testing the homocysteine hypothesis of atherothrombosis. The objective of this study was to determine whether there has been a change in folate status between

Vitamin Intervention for Stroke Prevention (VISP) trial: rationale and design.

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Elevated plasma levels of homocyst(e)ine [H(e)] are surprisingly common and strongly associated with endothelial dysfunction and a marked increase in vascular risk. Treatment with a combination of folic acid, pyridoxine (vitamin B6) and cobalamin (vitamin B12) reduces plasma H(e) levels in most

Hyperhomocysteinemia is Associated with Aortic Atheroma Progression in Stroke/TIA Patients.

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CONCLUSIONS Aortic arch (AA) atheroma and AA atheroma progression are independent risk factors for recurrent vascular events in stroke/transient ischemic attack (TIA) patients. Total homocysteine level (tHcy) is an independent risk marker for atherosclerosis including that found in AA. The purpose

Plasma Abeta, homocysteine, and cognition: the Vitamin Intervention for Stroke Prevention (VISP) trial.

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BACKGROUND Amyloid-beta protein (Abeta) plays a key role in Alzheimer disease (AD) and is also implicated in cerebral small vessel disease. Serum total homocysteine (tHcy) is a risk factor for small vessel disease and cognitive impairment and correlates with plasma Abeta levels. To determine whether

Lowering homocysteine in patients with ischemic stroke to prevent recurrent stroke, myocardial infarction, and death: the Vitamin Intervention for Stroke Prevention (VISP) randomized controlled trial.

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BACKGROUND In observational studies, elevated plasma total homocysteine levels have been positively associated with ischemic stroke risk. However the utility of homocysteine-lowering therapy to reduce that risk has not been confirmed by randomized trials. OBJECTIVE To determine whether high doses of

Homocysteine as a risk factor for ischemic stroke: an epidemiological story in evolution.

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Homocysteine is a metabolite of methionine that may be remethylated by enzymes requiring folate and cobalamin (vitamin B12) to again form methionine or catabolized by the pyridoxine (vitamin B6) dependent enzyme, cystathionine beta synthase (CBS) to form cysteine (fig. 1) [1]. Homocysteine exists as

A Case Report of Homocystinuria With Dystonia and Stroke.

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Inherited homocystinuria is a rare autosomal recessive aminoacidopathy which through early diagnosis can prevent its severe neurologic and vascular complications. Here we report a 9-year-old girl with homocystinuria, presenting with sequential symptoms of bilateral lens dislocation, skeletal

Modulation of mobile phase composition in flow-injection/sequential-injection chromatography exploiting multisyringe flow analysis.

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In this paper, a time-based multicommutated flow system is proposed for appropriate selection and modulation of mobile phase composition in flow-injection (FI)/sequential-injection (SI) chromatography. The novel flow assembly involves the on-line coupling of a short monolithic reversed-phase

Early Carotid Occlusion After Endarterectomy in a Patient With a Mutation for MTHFR A1298C Polymorphism.

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BACKGROUND Significant carotid stenosis is a well-documented risk factor for ischemic stroke. Carotid endarterectomy (CEA) and carotid artery stenting are effective procedures for the prevention of stroke in patients with this disease. However, the occurrence of restenosis could contribute to an

Homocysteine and neurologic disease.

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Over the last 10 years, there has been an explosion of interest in homocysteine, a sulfur-containing amino acid that occupies a central location in the metabolic pathways of thiol compounds. This interest is primarily because of the realization that hyperhomocysteinemia is an important risk factor

[Homocysteine and cerebrovascular disease].

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OBJECTIVE In the search for new, potentially treatable, vascular risk factors, one of the most recent to be put forward is the presence of increased total homocysteine (tHc) levels in blood plasma and this has also given rise to a large amount of literature and controversy. The origin of this

Hemodynamic and clinical effects of oral levodopa in children with congestive heart failure.

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OBJECTIVE This study was undertaken to evaluate the safety, efficacy and pharmacodynamic variables of oral levodopa in pediatric patients with congestive heart failure refractory to standard therapy. BACKGROUND Therapeutic options for children with congestive cardiomyopathies are limited to digoxin,

Patients with atherosclerotic vascular disease: how low should plasma homocyst(e)ine levels go?

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Plasma homocyst(e)ine level is a strong independent risk factor for vascular disease. The spelling of homocyst(e)ine reflects that what is measured, and what constitutes the risk factor; it includes homocysteine, homocystine (the dimer of homocysteine) and mixed cysteine-homocysteine disulfide.

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