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glutathione reductase/nécrose
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Protection against pulmonary oxygen toxicity by interleukin-1 and tumor necrosis factor: role of antioxidant enzymes and effect of cyclooxygenase inhibitors.
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Rats injected with interleukin-1 (10 micrograms) and tumor necrosis factor (10 micrograms) and then exposed continuously to hyperoxia (greater than 99% O2, 1 atm) survived longer, had increased lung reduced/oxidized glutathione ratios, smaller pleural effusions, less pulmonary hypertension and
Compartmental inhibition of hepatic glutathione reductase activities by 1,3-bis(2-chloroethyl)-N-nitrosourea (BCNU) in Sprague-Dawley and Fischer-344 rats.
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Administration of 1,3-bis(2-chloroethyl)-N-nitrosourea (BCNU) inhibits hepatic activities of glutathione reductase (GR) comparably in both adult male Fischer-344 (F344) and Sprague-Dawley (SD) rats in vivo. BCNU pretreatment greatly exacerbates the hepatic necrosis caused by diquat in F344 rats, but
Dietary sulphur amino acid adequacy influences glutathione synthesis and glutathione-dependent enzymes during the inflammatory response to endotoxin and tumour necrosis factor-alpha in rats.
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1. Glutathione concentrations in liver and lung fall when food intake or sulphur amino acid intake is inadequate. However, concentrations may be restored during inflammation, despite anorexia, provided that prior sulphur amino acid intake is adequate. 2. We studied the mechanisms of these changes by
Inhibition of glutathione reductase by isoproterenol oxidation products.
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Oxidative stress induced by catecholamines is a well recognized toxic event. This effect has been extensively observed in the heart, where high levels of catecholamines cause enzyme inhibition, lipid peroxidation, energy depletion and myocardial necrosis. Catecholamines can be converted into
Inhibition of Glutathione Reductase by Isoproterenol Oxidation Products.
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Oxidative stress induced by catecholamines is a well recognized toxic event. This effect has been extensively observed in the heart, where high levels of catecholamines cause enzyme inhibition, lipid peroxidation, energy depletion and myocardial necrosis. Catecholamines can be converted into
Identification of differentially expressed proteins in tumour necrosis factor-alpha-resistant and -sensitive rat hepatoma cells.
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BACKGROUND
Our earlier studies reported that ONO-4007, a synthetic lipid A analogue with low endotoxic activity, had shown much effect on tumour necrosis factor (TNF)-alpha-sensitive rat hepatoma cells, even though it had no effect on TNF-alpha-resistant cells.
METHODS
To find biomarkers which
Protective effect of Tribulus terrestris L. fruit aqueous extracton lipid profile and oxidative stress in isoproterenol induced myocardial necrosis in male albino Wistar rats.
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The objective of the present study was to evaluate the possible protective effects of Tribulus terrestris fruit aqueous extract (TTFAEt) on lipid profile and oxidative stress in isoproterenol (ISO) induced myocardial necrosis in albino Wistar rats. Albino Wistar rats were divided into normal
Protein kinase Cepsilon is linked to 12-O-tetradecanoylphorbol-13-acetate-induced tumor necrosis factor-alpha ectodomain shedding and the development of metastatic squamous cell carcinoma in protein kinase Cepsilon transgenic mice.
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Protein kinase Cepsilon (PKCepsilon), a Ca(2+)-independent, phospholipid-dependent serine/threonine kinase, is among the PKC isoforms expressed in mouse epidermis. We reported that FVB/N transgenic mice that overexpress ( approximately 18-fold) PKCepsilon protein in basal epidermal cells and cells
Diquat induces renal proximal tubule injury in glutathione reductase-deficient mice.
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Reactive oxygen species (ROS) have been associated with many human diseases, and glutathione (GSH)-dependent processes are pivotal in limiting tissue damage. To test the hypothesis that Gr1(a1Neu) (Neu) mice, which do not express glutathione reductase (GR), would be more susceptible than are
Recombinant tumor necrosis factor/cachectin and interleukin 1 pretreatment decreases lung oxidized glutathione accumulation, lung injury, and mortality in rats exposed to hyperoxia.
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Single, preexposure, parenteral injection with both recombinant tumor necrosis factor/cachectin (TNF/C) and interleukin-1 (IL-1) prolonged the survival of rats (144 +/- 9 h) in continuous hyperoxia (greater than 99% O2 at 1 atm) when compared with rats injected with boiled TNF/C and boiled IL-1 (61
Nuclear and nucleolar glutathione reductase, peroxidase, and transferase activities in livers of male and female Fischer-344 rats.
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The present studies were to test the hypotheses that glutathione reductase (GR), glutathione peroxidase (GPX), and glutathione S-transferase (GST) activities are expressed in nuclei and nucleoli of rat liver cells, and that differences in activities of these enzymes would correlate with the greater
Sex differences in diquat-induced hepatic necrosis and DNA fragmentation in Fischer 344 rats.
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Redox cycling metabolism of diquat catalyzes generation of reactive oxygen species, and diquat-induced acute hepatic necrosis in male Fischer 344 (F344) rats has been studied as a model of oxidant mechanisms of cell killing in vivo. At equal doses of diquat, female F344 rats sustained less hepatic
Cardioprotective activity of Ginkgo biloba Phytosomes in isoproterenol-induced myocardial necrosis in rats: a biochemical and histoarchitectural evaluation.
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The protective effects of Ginkgo biloba Phytosomes (GBP) in isoproterenol (ISO)-induced cardiotoxicity and the antioxidant activity involved in this protection were investigated in rats. Myocardial infarction was produced in rats with 65, 85, 120 and 200mg/kg of ISO administered subcutaneously (sc)
Tumor necrosis factor-alpha and oxidant status are essential participating factors in unexplained recurrent spontaneous abortions.
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BACKGROUND
Many factors have been implicated in the pathogenesis of unexplained recurrent spontaneous abortion (URSA). The current study was conducted to determine the possible role of antioxidant status and tumor necrosis factor-alpha (TNF-alpha) in URSA.
METHODS
Reduced glutathione (GSH),
Protective effect of apigenin on mouse acute liver injury induced by acetaminophen is associated with increment of hepatic glutathione reductase activity.
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Apigenin, a natural plant flavone, has many beneficial effects, but there is no report about treatment of acetaminophen-induced liver injury. Our aim was to examine the protective effect of apigenin on acetaminophen-induced mouse acute liver injury and to investigate the potential mechanisms. A
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