Objective To investigate the relationship among Survivin, PTEN and the occurrence, development, soakage and prog-nesis of gastric cancer. Methods The in-situ hybrization technique, immunochemistry and TUNEL method were used to detect the expres-sion of survivin mRNA, PTEN protein and apoptotic cell. Results The positive rate of survivin expression in gastric cancer was obvious higher than that in para-cancer tissue(P <0.01). Moreover, survivin expression rate in advanced clinical stage and low differentiation gastric cancer degree.was higher, compared with para-cancer tissue (P <0.01, P <0.05). The positive rate of PTEN expression in gas-tric cancer was obvious lower than that in pars-cancer tissue (P <0.01). The positive rate of PTEN expression in advanced clinical stage and low differentiation degree of tissue in gastric cancer was lower (P < 0.01). Furthermore, survivin and apoptesis indexes manifested negative relationship in gastric cancer(r =-0.861, P < 0.01), While PTEN and apoptosis indexes manifested positive relationship (r = 0.832, P < 0.01). Conclusions Survivin could be used as a novel marker to detect gastric cancer. PTEN gene lost function, which maybe promote the origin, growth, soakage and metastasis of gastric cancer.

Objective To investigate the function of TRAIUCaspase-3 and NF-κB among the occurrence, development and malignant invasion of bile duct carcinoma. Methods The in-situ hybrization technique and immunochemistry method were adopted to detect expression of TRAIL, Caspase-3 and NF-κB. Results The positive rates of TRAIL expression in carcinoma of bile duct and paracancer tissue were 45.2 % (19/42) and 53.3 %(8/15), respectively. The differences were not significant (P >0.05), and there were no evident difference between expression of TRAIL and every clinic pathology factor(P >0.05). The positive rates of Caspase-3 expression in carcinoma of bile duct were 30.9 %(13/42), which were obviously lower than those in paracancer tissue, 60.0 %(9/15)(P<0.05). However, The positive rates of NF-κB expression in carcinoma of bile duct were 61.9 %(26/42), obviously higher than those in paracancer tissue, 26.7 %(4/15)(P <0.05). The positive rates of Caspase-3, NF-κB expression were relation to metastasis and proliferation, differentiation degree of tissue and survival time (P <0.05), but were independent of sex, ages and position of carcinoma(P > 0.05). Moreover, TRAIL and Caspase-3 manifested positive relationship (P <0.05). On the contrary , NF-κB and Caspase-3 manifested negative relationship (P <0.05). However, there was no relationship between TRAIL and NF-κB(P >0.05). Conclusion Expression of TRAIL has no selectivity of tumour, Its expression is higher or lower which couldn' t absolutely decide tumour' s metastasis and proliferation, and could not decide malignant degree and prognosis of tumour, too. Activation of NF-κB and losing action or absence of Caspase-3 possibly accelerate metastasis and proliferation of tumour, which result in bad prognosis. NF-κB interdicte TRAIL inducing apoptosis approach via control activation of NF-κB, which induce tissue to avoiding apoptosis and multiplication unboundedly, leading to tumour's occurrence, development, metastasis and diffuseness.