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Seite 1 von 127 Ergebnisse
Interactive effects of hypoxia and polybrominated diphenyl ethers (PBDEs) on microbial community assembly in surface marine sediments.
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Hypoxia alters the oxidation-reduction balance and the biogeochemical processes in sediments, but little is known about its impacts on the microbial community that is responsible for such processes. In this study, we investigated the effects of hypoxia and the ubiquitously dispersed flame-retardant
The ROCK pathway inhibitor Y-27632 mitigates hypoxia and oxidative stress-induced injury to retinal Müller cells.
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Rho kinase (ROCK) was the first downstream Rho effector found to mediate RhoA-induced actin cytoskeletal changes through effects on myosin light chain phosphorylation. There is abundant evidence that the ROCK pathway participates in the pathogenesis of retinal endothelial injury and proliferative
Hypoxia and reoxygenation-induced injury of renal epithelial cells: effect of free radical scavengers.
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The aim of this study was to characterize injuries of LLC-PK1 and MDCK cells exposed to hypoxia and reoxygenation. Exposure of LLC-PK1 cells to hypoxia reduced the ATP contents and increased the leakage of lactate dehydrogenase (LDH), but MDCK cells had no such injuries. Hypoxia-reoxygenation of
Extracts of Celastrus Orbiculatus Inhibit Cancer Metastasis by Down-regulating Epithelial-Mesenchymal Transition in Hypoxia-Induced Human Hepatocellular Carcinoma Cells.
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OBJECTIVE
To evaluate the effects of Celastrus Orbiculatus extracts (COE) on metastasis in hypoxia-induced hepatocellular carcinoma cells (HepG2) and to explore the underlying molecular mechanisms.
METHODS
The effect of COE (160, 200 and 240 μg/mL) on cell viability, scratch-wound, invasion and
Effect of arachidonic acid metabolic inhibitors on hypoxia/reoxygenation-induced renal cell injury.
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The present study was undertaken to examine the role of arachidonic acid (AA) metabolites in hypoxia/reoxygenation (H/R)-induced renal cell injury in rabbit renal cortical slices using AA metabolic inhibitors. Inhibitors of cyclooxygenase (indomethacin and diclofenac sodium) and lipoxygenase
Helix B Surface Peptide Protects Cardiomyocytes Against Hypoxia/Reoxygenation-induced Apoptosis Through Mitochondrial Pathways.
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Helix B surface peptide (HBSP), a newly developed tissue-protective erythropoietin derivative, has beneficial effects on myocardial ischemia. This study aimed to investigate the cardio-protective effects of HBSP against hypoxia/reoxygenation (H/R) injury and its possible mechanism.
A rat-derived
[Experimental study on effect of Buchang Naoxintong containing serum for antagonizing hypoxia-induced apoptosis of cortical neurons].
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OBJECTIVE
To investigate the effect of Buchang Naoxintong containing serum (BNCS) for antagonizing hypoxia-induced apoptosis of primary cultured cortical neurons with the sero-pharmacological method.
METHODS
Primary cortical neurons from neonate rats (within 24 h) were cultured and induced into
On the antioxidant properties of erythropoietin and its association with the oxidative-nitrosative stress response to hypoxia in humans.
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OBJECTIVE
The aim of this study was to examine if erythropoietin (EPO) has the potential to act as a biological antioxidant and determine the underlying mechanisms.
METHODS
The rate at which its recombinant form (rHuEPO) reacts with hydroxyl (HO˙), 2,2-diphenyl-1-picrylhydrazyl (DPPH˙) and peroxyl
Interactive effects of hypoxia and PBDE on larval settlement of a marine benthic polychaete.
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Marine benthic polychaete Capitella sp. I is widely known to adapt to polluted habitats; however, its response to xenobiotics under hypoxic conditions has been rarely studied. This research aimed to test the hypothesis that interactive effects of hypoxia and congener BDE-47 of polybrominated
Effects of oxygen deficiency and calcium omission on carbon tetrachloride hepatotoxicity in isolated perfused livers from phenobarbital-pretreated rats.
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The effect of oxygen concentration and Ca2+ omission on CCl4-induced hepatotoxicity was studied in a non-recirculating and hemoglobin-free liver perfusion system using phenobarbital-pretreated rats. With 95% O2-saturated perfusate, infusion of 0.5 mM CCl4 caused an instantaneous increase of
Efficacy and mechanism of hypoxic postconditioning in salvage of ex vivo human rectus abdominis muscle from hypoxia/reoxygenation injury.
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In reconstructive surgery, skeletal muscle may endure protracted ischemia before reperfusion, which can lead to significant ischemia/reperfusion injury. Ischemic postconditioning induced by brief cycles of reperfusion/reocclusion at the end of ischemia has been shown to salvage skeletal muscle from
Ganoderma atrum polysaccharide protects cardiomyocytes against anoxia/reoxygenation-induced oxidative stress by mitochondrial pathway.
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It is now well established that oxidative stress plays a causative role in the pathogenesis of anoxia/reoxygenation (A/R) injury. Ganoderma atrum polysaccharide (PSG-1), the most abundant component isolated from G. atrum, has been shown to possess potent antioxidant activity. The goals of this study
Hypoxia sensing in the fetal chicken femoral artery is mediated by the mitochondrial electron transport chain.
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Vascular hypoxia sensing is transduced into vasoconstriction in the pulmonary circulation, whereas systemic arteries dilate. Mitochondrial electron transport chain (mETC), reactive O(2) species (ROS), and K(+) channels have been implicated in the sensing/signaling mechanisms of hypoxic relaxation in
Metabolism of diphenyl sulfoxide in perfused guinea pig liver. Involvement of aldehyde oxidase as a sulfoxide reductase.
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To evaluate the metabolic capacity of intact guinea pig liver under normoxic and hypoxic conditions, oxidative and reductive metabolism of diphenyl sulfoxide (DPSO) was studied by the nonrecirculating perfusion method in situ. DPSO was exclusively converted into diphenyl sulfone (DPSO2), an
Biphasic modulation of protein kinase C and enhanced cell toxicity by amyloid beta peptide and anoxia in neuronal cultures.
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A major feature of Alzheimer's disease is the deposition of the amyloid beta peptide (Abeta) in the brain by mechanisms which remain unclear. One hypothesis suggests that oxidative stress and Abeta aggregation are interrelated processes. Protein kinase C, a major neuronal regulatory protein is
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