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15 Ergebnisse
[Treatment with spermine of certain gynecological hemorrhages].
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Therapeutic effects of intracarotid infusion of spermine/nitric oxide complex on cerebral vasospasm.
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BACKGROUND
Vasospasm is one of the underlying causes of morbidity and mortality in subarachnoid haemorrhage (SAH). The therapeutic effects of intracarotid infusion of spermine/nitric oxide complex (SPER/NO) on cerebral vasospasm in an experimental model of SAH were investigated.
METHODS
Twenty-four
Pyridoxal 5'-phosphate as an antidote for cyanide, spermine, gentamicin, and dopamine toxicity: an in vivo rat study.
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Pyridoxal 5'-phosphate (PLP), the active form of vitamin B6, readily forms complexes with a wide variety of potentially toxic substances, including cyanide (KCN), spermine (SPM), gentamicin (GM), and dopamine (DOP). The role of PLP as an antidote for these toxicants in vivo was studied. Rats were
Role of Mitochondrial Calcium Uniporter in Early Brain Injury After Experimental Subarachnoid Hemorrhage.
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Previous studies have shown that mitochondrial Ca(2+) is undertaken by mitochondrial calcium uniporter (MCU), and its accumulation is associated with the development of many diseases. However, little was known about the role of MCU in early brain injury (EBI) after subarachnoid hemorrhage (SAH). MCU
Blockage of mitochondrial calcium uniporter prevents iron accumulation in a model of experimental subarachnoid hemorrhage.
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Previous studies have shown that iron accumulation is involved in the pathogenesis of brain injury following subarachnoid hemorrhage (SAH) and chelation of iron reduced mortality and oxidative DNA damage. We previously reported that blockage of mitochondrial calcium uniporter (MCU) provided benefit
Role of HCN channels in neuronal hyperexcitability after subarachnoid hemorrhage in rats.
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Disruption of ionic homeostasis and neuronal hyperexcitability contribute to early brain injury after subarachnoid hemorrhage (SAH). The hyperpolarization-activated/cyclic nucleotide (HCN)-gated channels play critical role in the regulation of neuronal excitability in hippocampus CA1 region and
Polymeric-based perivascular delivery of a nitric oxide donor inhibits intimal thickening after balloon denudation arterial injury: role of nuclear factor-kappaB.
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OBJECTIVE
To examine the effect of a polymeric-based periadventitial delivery of a nitric oxide (NO)-releasing diazeniumdiolate, spermine/NO (SPER/NO), on balloon injury-induced neointimal hyperplasia in rat ileofemoral arteries.
BACKGROUND
Reduced local bioavailability and adverse side effects
Effect of polyamines on in vitro platelet aggregation and in vivo thrombus formation.
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BACKGROUND
Polyamines are polycations present in all living organisms and have been shown to play an important role in various physiological functions. Previous studies have shown that various amines including polyamines inhibited platelet activation, but there were no definitive studies testing
Inhibition of arterial thrombosis by polyamines in a canine coronary artery injury model.
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Polyamines are polycations present in all living organisms and have been shown to play an important role in various physiological functions. Previous studies have shown that various amines including polyamines inhibit platelet activation. Among the amines tested tetra-amine, spermine is the potent
Inhibition of ornithine aminotransferase by 5-fluoromethylornithine: protection against acute thioacetamide intoxication by elevated tissue ornithine levels.
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5-Fluoromethylornithine (5FMOrn) is a selective inactivator of ornithine aminotransferase. Its administration causes a dramatic increase of ornithine concentrations in all tissues. Treatment of mice with 20 mg.kg-1 5FMOrn shortly before or after a lethal dose (600 mg.kg-1, intraperitoneally) of
Epithelial cell proliferation in the digestive tract induced by space restriction and water-immersion stress.
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The effects of space restriction and water-immersion stress on epithelial cell proliferation in the digestive tract, with special attention to the esophagus, stomach and duodenum, in 8-week-old SD male rats were examined. Histological assessment revealed spotted hemorrhagic lesions in the fundus of
Effect of nitric oxide on hemoprotein-catalyzed oxidative reactions.
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Hemoglobin or myoglobin-catalyzed oxidation reactions have been suggested to initiate and/or exacerbate tissue injury associated with a variety of pathological conditions including post-ischemic tissue injury, hemorrhagic disorders, and chronic inflammation. In the present study, we investigated
Polyamine responses in a solid transplanted tumor (S180) in liver and in urine during endotoxin-induced tumor injury in the mouse.
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Polyamine (PA) and ATP concentrations have been measured in the S180 sarcoma damaged by endotoxin (1) 4 hours after administration, coinciding with the onset of hemorrhage, (2) at 8 hours, and (3) at 24 hours, preceeding overt necrosis. The putrescine (PU) content increased promptly, the spermidine
Cationic Niosomes for Enhanced Skin Immunization of Plasmid DNA-Encoding Ovalbumin via Hollow Microneedles.
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The purpose of the present study was to evaluate the use of cationic niosomes composed of Span20:cholesterol:cationic lipid (N 1,N 1-dimyristeroyloxyethyl-spermine) at the molar ratio of 2.5:2.5:0.5 mM combined with hollow microneedle (MN) devices for in vivo skin immunization of plasmid
Calcium induces phospholipid redistribution and microvesicle release in human erythrocyte membranes by independent pathways.
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The increase in intracellular Ca2+ concentration in erythrocytes and platelets results in simultaneous phospholipid scrambling and microvesicle shedding. Microvesicle formation involves membrane fusion events which were proposed either to be tightly linked to phospholipid transversal redistribution
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