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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
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
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
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
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
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
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 (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
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
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
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
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
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)
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),
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