ABSTRACT
Objective To compare the effectivenessbetween the use of computer simulationin the teaching of abdomen diagnosis skills and the traditional teaching mode by conducting the real－time assessment and after－school questionnaire survey. Method Weselected 308 undergraduates with 165 (4 classes) majoring in clinical medicine and 143 (4 classes) majoring in medical laboratory in Kunming Medical Universityas the research object. Students were randomly divided into two groups and taught using demonstration method. One group practiced abdominal examination on other students while the other group adopted computer simulation.Both groups were giventests of practical skills and anonymous open－ended questionnaires after class.Results The average score of computer simulation group was higher than the other group. The questionnaire survey showed that computer simulation was suitable for repeatable exercises and easy to review after class (P＜0.05).Conclusion In thediagnostic practice of abdominal examination,teaching assisted with computer simulation showing an outstanding performance should be combined and promoted with the traditional teaching.
ABSTRACT
This study was aimed to investigate the effect of Docetaxel on drug-resistant leukemia cell line HL-60/ADR and its influence on expression of P-pg, BCL-2 and BAX proteins so as to provide a new strategy and theoretical basis for clinical solution of leukemia drug-resistance. The morphological changes of HL-60/ADR were observed by light and transmission electron microscopes; the cell apoptosis was detected by flow cytometry with Annexin V FITC/PI double labeling; the expressions of P-gp, BCL-2 and BAX were determined by immunohistochemical technique and computer image analysis system. The results showed that the HL-60/ADR cells treated with Docetaxel displayed typical apoptotic morphological changes; the Docetaxel significantly inhibited the growth of HL-60/ADR cells in concentration-and time-dependent manners (r=0.853, r=0.989) and induced the apoptosis of HL-60/ADR cells, but apoptosis rate did not showed the increase trend along with concentration change of drug. The HL-60/ADR cells highly expressed P-gp, there were no significant differences between each groups; the expression of BCL-2 and BAX in HL-60/ADR cells decreased and increased respectively. It is concluded that the Docetaxel induces apoptosis of HL-60/ADR cells, decreases the expression of BCL-2 protein and increases the expression of BAX protein.