Objective To study the teaching effects of using case discussion-analysis method in the teaching course of Nursing Research among nursing students and then put forward suggestions for improving teaching.Methods By way of case discussion-analysis,a part of teaching contents of Nursing Research were taught to the 118 nursing students in 2003 grade.The teaching effect was evaluated by observing the design ability of scientific research,the learning interest,learning attitude,etc.Results The design ability of scientific research,recognition of Nursing Research,learning attitude and learning interest,etc of the students were significantly improved.Conclusions Case discussion-analysis method could effectively excite the interest and the potential of students and then improve the ability of discovering and solving problems.

Aim To investigate the effect of SM-1 on seven main cytochrome P450(CYP450)in human liver microsomes.Methods Substrate or SM-1 was incubated with human liver microsomes for 30 min in vitro,and divided into control group and experimental group.The effects of SM-1 on the main phase I metabolic enzymes in human liver microsomes was detected by HPLC.Phenacetin,bupropion,paclitaxel,tolbutamide,omeprazole,dextromethorphan,testosterone were investigated as probe drugs.Results Inhibition rate of SM-1 on the classical substrate of human liver microsomal CYP was 0.05％,3.37％,0.08％,2.07％,4.20％,-0.15％and 10.84％,respectively.Conclusions SM-1 may have inhibitory effect on CYP3A4.Attention should be paid to the interaction of clinical drug induced by CYP enzyme inhibition.

Objective To evaluate the clinical application of Vater ampulla-duodenal conjunction resection in the treatment of periampullary carcinoma. Methods From January 2005 to July 2006, 15 patients underwent this modus operandi, including carcinoma of duodenal papilla (6 cases), Vater ampulla (5 cases) and lower part of common bile duct (4 cases). The descending part of duodenum, Vater ampulla, head of pancreas and common bile duct were excised en bloc followed by reconstruction of GI conduit. Result One patient died of stress ulcer 2 months postoperatively, the 14 patients recovered uneventfully without any major complications, and 3-16 months follow-up found no tumor recurrence. Conclusion Vater ampulla-duodenal conjunction resection as a new surgical procedure provides enough tumor margin clearance while causing less trauma than standard pancreatoduodenectomy in selected cases of periampullary carcinoma.

Objective To study the inhibition effect of miR-106a inhibitor on tumor growth of ovarian cancer xenografts mice. Methods BALB/c mice were selected as experimental animals, ovarian cancer SKOV-3 cells transfected with miR-106a inhibitor and its negative control were inoculated subcutaneously, intratumoral injection of miR-106a inhibitor and its negative control were continued after tumor formation, and they were enrolled as treatment group and model group, respectively. Tumor volume and weight as well as Ki-67 and programmed cell death 4 (PDCD4) expression were determined; miR-106a inhibitor and its negative control as well as miR-106a mimic and its negative control were transfected into SKOV-3 cells, and expression of PDCD4 in cells was determined. Results Tumor tissue volume and weight as well as mRNA expression and protein expression of Ki-67 in treatment group were significantly lower than those in the model group while mRNA expression and protein expression of PDCD4 were significantly higher than those in the model group; transfection of miR-106a mimic could decrease mRNA expression and protein expression of PDCD4 in SKOV-3 cells, and transfection of miR-106a inhibitor could increase mRNA expression and protein expression of PDCD4 in SKOV-3 cells. Conclusions Transfection of miR-106a inhibitor can inhibit the growth of tumor in ovarian cancer xenografts mice through increasing the expression of PDCD4.