arginase/edema

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Arginase deficiency with lethal neonatal expression: evidence for the glutamine hypothesis of cerebral edema.

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We describe a rare and lethal case of arginase deficiency in a 2-day-old female infant with encephalopathy and cerebral edema. The levels of glutamine and arginine but not ammonia were markedly elevated, lending support to the "glutamine hypothesis" as the mechanism of cerebral edema in urea cycle

Arginase Deficiency

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Clinical characteristics: Arginase deficiency in untreated individuals is characterized by episodic hyperammonemia of variable degree that is infrequently severe enough to be life threatening or to cause death. Most commonly, birth and early childhood are normal.

Arginase deficiency manifesting delayed clinical sequelae and induction of a kidney arginase isozyme.

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Deficiency of liver arginase (AI) is characterized clinically by hyperargininemia, progressive mental impairment, growth retardation, spasticity, and periodic episodes of hyperammonemia. The rarest of the inborn errors of urea cycle enzymes, it has been considered the least life-threatening, by

Effectiveness of arginase inhibitors against experimentally induced stroke.

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Stroke is a lethal disease, but it disables more than it kills. Stroke is the second leading cause of death and the most frequent cause of permanent disability in adults worldwide, with 90% of survivors having residual deficits. The pathophysiology of stroke is complex and involves a strong

Arginase in retinopathy.

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Ischemic retinopathies, such as diabetic retinopathy (DR), retinopathy of prematurity and retinal vein occlusion are a major cause of blindness in developed nations worldwide. Each of these conditions is associated with early neurovascular dysfunction. However, conventional therapies target

Protein kinase C-α and arginase I mediate pneumolysin-induced pulmonary endothelial hyperpermeability.

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Antibiotics-induced release of the pore-forming virulence factor pneumolysin (PLY) in patients with pneumococcal pneumonia results in its presence days after lungs are sterile and is a major factor responsible for the induction of permeability edema. Here we sought to identify major mechanisms

Water-soluble polysaccharide obtained from Acorus calamus L. classically activates macrophages and stimulates Th1 response.

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A pectic polysaccharide was isolated from the rhizomes of Acorus calamus L. The main component of its carbohydrate chain was represented by residues of D-galacturonic acid (>85%). In addition, this polysaccharide contained residues of galactose, arabinose, xylose and rhamnose (<10%). Structural

Association Between Inflammatory Mediators and Pulmonary Blood Flow in a Rabbit Model of Acute Pulmonary Embolism Combined With Shock

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Background: The pro-inflammatory cytokines were detected in pulmonary embolism (PE) and non-pulmonary embolism (non-PE) tissues to explore the role of inflammation responses and their relationship with the pulmonary blood flow in a rabbit

Ischemia-reperfusion injury in a rat microvascular skin free flap model: A histological, genetic, and blood flow study.

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Ischemia reperfusion injury is associated with tissue damage and inflammation, and is one of the main factors causing flap failure in reconstructive microsurgery. Although ischemia-reperfusion (I/R) injury is a well-studied aspect of flap survival, its biological mechanisms remain to be elucidated.

Temporal and dose-response features in swine fed corn screenings contaminated with fumonisin mycotoxins.

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Fumonisin B1 (FB1), a mycotoxin produced by Fusarium moniliforme and F. proliferatum, induces liver damage and pulmonary edema in swine. We examined the temporal and dose-response features of FB1 toxicosis in male weanling crossbred pigs fed nutritionally balanced diets, containing corn screenings

Pharmacological hypothermia induced neurovascular protection after severe stroke of transient middle cerebral artery occlusion in mice.

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Therapeutic hypothermia is a potential protective strategy after stroke. The present study evaluated the neurovascular protective potential of pharmacological hypothermia induced by the neurotensin receptor 1 agonist HPI-201 after severe ischemic stroke. Adult C57BL/6 mice were subjected to filament

Polysaccharides from Citrus grandis associate with luteolin relieves chronic pharyngitis by anti-inflammatory via suppressing NF-κB pathway and the polarization of M1 macrophages.

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Chronic pharyngitis is characterized as a common inflammation of the pharyngeal mucosa, and anti-inflammatory medications are the common treatment to relieve it. Polysacharides of Citrus grandis L. Osbeck (PCG) and luteolin have been reported to have anti-inflammatory activities. In this study, the

Ozone-induced injury and oxidative stress in bronchiolar epithelium are associated with altered pulmonary mechanics.

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In these studies, we analyzed the effects of ozone on bronchiolar epithelium. Exposure of rats to ozone (2 ppm, 3 h) resulted in rapid (within 3 h) and persistent (up to 72 h) histological changes in the bronchiolar epithelium, including hypercellularity, loss of cilia, and necrotizing

Hydrogen sulfide protects blood-brain barrier integrity following cerebral ischemia.

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By using two structurally unrelated hydrogen sulfide (H2 S) donors 5-(4-methoxyphenyl) -3H-1, 2-dithiole-3-thione (ADT) and sodium hydrosulfide (NaHS), this study investigated if H2 S protected blood-brain barrier (BBB) integrity following middle cerebral artery occlusion (MCAO). ICR mice underwent

Stem cell conditioned medium improves acute lung injury in mice: in vivo evidence for stem cell paracrine action.

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Mortality and morbidity of acute lung injury and acute respiratory distress syndrome remain high because of the lack of pharmacological therapies to prevent injury or promote repair. Mesenchymal stem cells (MSCs) prevent lung injury in various experimental models, despite a low proportion of

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