cyanocobalamin/hypoxia

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The influence of hypoxia on transvascular leakage in the isolated rat heart: quantitative and ultrastructural studies.

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1. The multiple indicator dilution method was used to study the transvascular movement of gamma-globulin, bovine serum albumin, insulin and cyanocobalamin in the isolated rat heart. 2. Perfusion of the heart with well-oxygenated solution for 75 min (constant flow) did not produce a significant

Methylcobalamin attenuates the hypoxia/hypoglycemia- or glutamate-induced reduction in hippocampal fiber spikes in vitro.

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The effects of methylcobalamin, a vitamin B12 analogue, on the hypoxia/hypoglycemia- or glutamate-induced reduction in hippocampal CA1 presynaptic fiber spikes elicited by Schaffer collateral stimulation in rat brain slices were evaluated. Hippocampal slices were exposed to 15 min of

In vitro measurement and adaptive response of Fe3+ uptake by mouse intestine.

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In order to define the importance of the mucosal uptake step in the intestinal regulation of iron absorption, unidirectional uptake rates of Fe3+ from a nitrilotriacetic acid chelate were measured in duodenal fragments from mice using an in vitro technique. [57Co]-Cyanocobalamin was used as a marker

A review of acute cyanide poisoning with a treatment update.

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Cyanide causes intracellular hypoxia by reversibly binding to mitochondrial cytochrome oxidase a(3). Signs and symptoms of cyanide poisoning usually occur less than 1 minute after inhalation and within a few minutes after ingestion. Early manifestations include anxiety, headache, giddiness,

Elevated Methemoglobin Levels in a Patient Treated with Hydroxocobalamin After Suspected Cyanide Exposure

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Background: Cyanide (CN) toxicity commonly occurs during enclosed-space fires. Historically, the first step in treating CN toxicity utilized amyl nitrite and sodium nitrite to induce methemoglobinemia, which can be dangerous in this

Interstitial fluid volumes and albumin spaces in pulmonary oxygen toxicity.

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In rabbits exposed to 100% O2 at 1 ATA from 48 to 72 h, we measured the accumulation of intravenously injected 125I-bovine albumin, [57Co]cyanocobalamin, and 51Cr-erythrocytes in the intestine, skeletal muscle, heart, and lungs. From these data, we calculated the extravascular albumin and

Microvascular permeability of the isolated rat heart to various solutes in well-oxygenated and hypoxic conditions.

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The aim of this study was to investigate the effect of a moderate degree of hypoxia on coronary vascular permeability to various lipophobic solutes. Using the multiple indicator dilution method the permeability-surface area (PS) products were determined for 125I-albumin, 125I-insulin and

Acute extrapyramidal syndrome in methylmalonic acidemia: "metabolic stroke" involving the globus pallidus.

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We report four patients with methylmalonic acidemia who developed acute extrapyramidal disease after metabolic decompensation. The neurologic findings resulted from bilateral destruction of the globus pallidus with variable involvement of the internal capsules. This complication was unrelated to a

Live-fibroblast IR imaging of a cytoprotective PhotoCORM Activated with Visible Light.

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Carbon monoxide releasing molecules (CORMs) are an emerging class of pharmaceutical compounds currently evaluated in several preclinical disease models. There is general consensus that the therapeutic effects elicited by the molecules may be directly ascribed to the biological function of the

Oral high dose vitamin B12 decreases renal superoxide and post-ischemia/reperfusion injury in mice.

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Renal ischemia/reperfusion injury (IRI) is a leading cause of acute kidney injury (AKI), a potentially fatal syndrome characterized by a rapid decline in kidney function. Excess production of superoxide contributes to the injury. We hypothesized that oral administration of a high dose of vitamin B12

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