The experimental trials was conducted on Swiss white mice of 7 weeks of age, both sexes, and weight of 20-22g. Results: SOD activity in mice with ischemia/reperfusion was significantly statistical lower than those in the control group, p<0.05. In the group treated by “activating the blood and clearing the obstruction” formula with dose of 200 mg/kg, SOD activity was lower than those in the research group (89.5%) and was 73.7% compared to control group. In the group treated by this formula with dose of 300 mg/kg, SOD content was still lower than those in the research group (96%) and was 79.5% compared to control group. In the group treated by the dose of 500 mg/kg, SOD activity was higher significantly than those in the research group (113.6%) and was 96% compared to control group. The result showed that with appropriate dose, this medicinal formula has antioxidant effects
Brain Injuries ; Mice ; Ischemia ; Reperfusion

Radix Polygoni multiflori has been used Vietnamese traditional medicine for a long time. This paper presented the remarkable antioxidant effects of the AcOET extract from Radix Polygoni multiflori with evidences obtained from various antioxidant tests: inhibition of lipid peroxidation in cell hemogenates, of anion superoxide production, stimulation of SOD activity using Ransod kits. The extract protected the splenocytes from H20¬2- induced injuries and protected brain cells from oxidative stress caused by an ischemia/reperfusion course. These results suggested that application of Radix Polygoni multiflori as antioxidant agent will be beneficial in prevention and treatment of diseases of the elderly
Acetates ; Antioxidants

In Vietnamese indigenous medicine, the leaves of Artocarpus tonkinensis A-chev are used for treatment of lumbago and myoasthenia. Our study finds the flavonoid fraction from leaves of Artocarpus tonkinensis A-chev, is a potential antioxidant agent - Kaemferol in the total flavonoid fraction and it has an inhibitory effect against the lipid peroxydation of liver
flavonoids ; Liver ; Plants, Medicinal ; Medicine, Traditional