ABSTRACT
Objective To investigate interventions of vitamin E( VE) on indomethacin-induced gastric mucosal injury. Methods Fifty mice were randomly divided into 5 groups. Normal control group was administrated with saline, others were intragastrically administrated with indomethacin ( 20 mg · kg-1 ) . After 4 hours, mice were intragastrically treated with saline, cimetidine(200 mg·kg-1),VE(25,50 mg·kg-1) once a day for 5 consecutive days. By the end of the treatment,gastric mucosa injury index,serum superoxide dismutase(SOD) activity,and malondialdehyde(MDA) content were determined. ResultsGastric mucosal injury indexs of mice treated with cimetidine,VE at low and high doses were significantly lower than that of the model control and higher than that of the normal control(P<0. 01). VE at high doses showed significantly less mucosal injury than that of the cimetidine group(P<0. 05). Healing-rate of gastric mucosal injury in cimetidine group,VE low-dose and high-dose groups were significantly higher than that of model control group(P<0. 01). SOD activity of VE at low and high doses was significantly lower than that of the model control and cimetidine groups(P<0. 05). The results also revealed that cimetidine and two doses of VE significantly elevated SOD activity and lowered the level of MDA(P<0. 05, 0. 01). Conclusion VE can obviously promote the healing of gastric mucosal injury,especially at high dose,which is better than cimetidine,while,the low dose is comparable with cimetidine.
ABSTRACT
We provide laboratory for students to design and complete experiment independently,and examine their operation ability in course of experiment.After accomplishing their experiments,the students must write a disquisition on it.Through this exploration experimentation,we have trained students scientific analysis ability and innovation ability and make them benefit form it in their future study and work.