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OBJECTIVE
To study the dynamic change of glutathione S- transferase pi (GST-pi) in normal gastric mucosa, gastric mucosa with intestinal metaplasia (IM) and gastric cancer and to investigate the relationship between human carcinogen detoxification system and the virulence of Helicobacter
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OBJECTIVE
Oesophageal cancer associated with the premalignant condition Barrett's oesophagus has increased in incidence over the last few years. Phase II detoxifying enzymes, including glutathione S-transferases (GSTs) protect the mucosa from carcinogens, which can cause oxidative damage to cells.
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Glutathione, an antioxidant plays an important role in phase-II detoxification of carcinogens. The levels of reduced glutathione are maintained by glutathione-depleting as well as replenishing enzymes such as glutathione-s-transferase (GST) and glutathione reductase (GR), respectively. Pre and post
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BACKGROUND
The primary defense against oxidation damage of tissues are anti-oxidant enzymes, e.g. superoxide dismutase, catalase and glutathione peroxidase. Some non-enzymatic substances have a significant anti-oxidant action (e.g. vitamin C, E, beta-carotene and others). The objective of the
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This experiment was carried out to evaluate the possibility of degradation of d-lactate into formate and acetaldehyde. In order to induce hyperproduction of d-lactate in rats. Donryu male albino rats were fed diets containing 0.064% 3'-methyl-4-dimethylaminoazobenzene (3'-MDAB),
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Cyclooxygenase 2 (COX-2) regulates the prostaglandins production and it seems to have a role in the onset and progression of different malignant tumors, being overexpressed in numerous human malignancies and premalignant conditions. Some cellular elements from chronic inflammatory processes,
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Donryu male albino rats were fed a diet containing 0.064% 3'-methyl-4-dimethylaminoazobenzene (MDAB) for 21 weeks. During the ensuing rat liver carcinogenesis, changes in the concentrations of methylglyoxal, D-lactate and glutathione as well as activities of glyoxalase I and II in liver and plasma
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Gastroscopy with gastric biopsy was performed in 109 individuals aged 25-71 years. Activities of three antioxidant enzymes were assayed in biopsy specimens: Cu/Zn superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px). Patients were classified according to the endoscopic and
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In 68 subjects the activities of Cu/Zn-superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) were investigated in gastric mucosa. The patients were classified according to the histological finding into following groups: 12 with normal finding (N), 16 with superficial
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