Objective To investigate the efficacy of oxaliplatin plus S-1 versus the XELOX(oxaliplatin + capecitabine) program in the adjuvant chemotherapy in the patients with postoperative gastric cancer .Methods A total of 81 cases with postoperative gas-tric cancer were randomly divided into the treatment group and the control group .The treatment group (41 cases) received the chemotherapy of oxaliplatin +S-1 ,while control group was given the chemotherapy of XEOLX program .Results The 1-year and 2-year recurrence-free survival (RFS) of the treatment group and the control group were 51 .3% vs .61 .5% ,25 .6% vs .20 .5% ,there were no statistically significant differences between the two groups (P=0 .361 ,P=0 .591) .The 1-year and 2-year overall survival period of the treatment group and the control group were 64 .1% vs .69 .2% ,30 .8% vs .25 .6% ,respectively ,there were also no sta-tistically significant differences between two groups(P=0 .631 ,P=0 .615) .The mainly adverse reactions of the two groups were myelosuppression ,gastrointestinal reactions ,hand-foot syndrome ,mucositis ,peripheral nerve toxicity ,hepatic and renal function damage .The occurrence rate of hand-foot syndrome in the control group was significantly higher than that in the treatment group (P=0 .001) ,the adverse reactions were improved after symptomatic treatment .Conclusion Oxaliplatin plus S-1 and oxaliplatin plus capecitabine are therapeutic equivalence and well tolerated in the patients with postoperative gastric cancer .

Objective To identify the role of miR-873, which may regulate the expression of survivin,in human pros-tate cancer PC3 cells invasion.Methods PC3 cells were cultured in vitro, and changes of cellular morphology were ob-served by phase contrast microscope.miR-873,which might regulate the expression of survivin,was predicted by bioinforma-tics and identified using dual luciferase report system.Expressions of miR-873 and survivin were determined using real-time quantitative PCR( qRT-PCR) and Western blotting after transfection of miR-873 mimics.The invasion of PC3 cells was de-tected in vitro by Transwell chamber.Results The expression of survivin was positive by immunofluorescence cytochemis-try.Using dual luciferase reporter system, miR-873 could inhibit the expression of survivin by binding to its mRNA 3′UTR.Results of qRT-PCR and Western blotting showed that overexpression of miR-873 down-regulated the expression of survivin.The invasion of PC3 cells was suppressed by over-expression of miR-873.Conclusion MiR-873 may negatively regulate the expression of survivin in human prostate cancer PC3 cells and inhibit cell invasion.