9 резултати
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
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.
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
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
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),
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,
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
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
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