Effect of the Extract of Ulmus davidiana Root on the Activity of Enzymes Related to the Removal of Reactive Oxygens in B6C3F1 Mouse Kidney

摘要

The effect of the extract of Ulmus davidiana root on the activity of enzymes related to the removal of reactive oxygen species was investigated in the B6C3F1 mouse kidney. B6C3F1 mice were divided into five groups and fed for 20 weeks. Reduced xanthine oxidase activity was observed in groups 4 (group fed with U. davidiana extract after NJf-diethylnitrosamine (DEN) treatment and 5 (group fed with U. davidiana extract from the beginning of DEN treatment) compared to group 2 (group treated with DEN). The level of Mn-superoxidase dismutase tended to increase in the groups after DEN treatment. In group 5, the catalase activity increased and the other groups exhibited an unchanged or slightly decreased level of enzyme. Similar effects were found for glutathione peroxidase. A lower degree of TEARS (thiobarbituric acid reactive substance) formation was estimated in groups 4 and 5, compared to that in DEN treated group 2.