ABSTRACT
Objective To explore the expressions of Topo-Ⅱ,GST-π in gastric cancer tissues and normal gastric mucosa tissues,to reveal its relationship with clinical pathological features and significance.Methods Immunohistochemical method was used to detect Topo-Ⅱ,GST-π expressions in 100 cases of gastric carcinoma and 20 cases of normal gastric mucosa,make a comprehensive analysis combined with clinical pathology data.Results There were significant difference of expression of Topo-Ⅱ,GST-π between the normal gastric mucosa tissues and gastric cancer of different degree of differentiation.Topo-Ⅱ positive expression rate of 5.0 ％ (1/20),100 ％ (30/30),96.7 ％ (29/30) and 87.5 ％ (35/40) respectively; GST-π positive expression rate were 60.0 ％ (12/20),83.3 ％ (24/30),96.7 ％ (29/30) and 100.0 ％ (40/40) respectively (P ＜ 0.05).The expressions of Topo-Ⅱ,GST-π in gastric cancer tissue were not relevant to patient' s sex,age,tumor location,infiltration depth (P ＞ 0.05).Topo-Ⅱ associated with the differentiation degree and lymph node metastasis of tumors,with the decreasing degree of tumor differentiation,lymph node metastasis,Topo-Ⅱ expression also decreased.GST-π was associated with tumor diameter,degree of differentiation and lymph node metastasis,the lower the degree of differentiation,lymph node metastasis,tumor diameter the more,GST-π expression increased (P ＜ 0.05).GST-π and Topo-Ⅱ were negative correlation and both expressed in gastric cancer tissue (P ＜ 0.01).Conclusions The expressions of Topo-Ⅱ in gastric cancer tissue is associated with the differentiation degree and lymph node metastasis of the tumor.GST-π is associated with tumor diameter,the degree of differentiation and lymph node metastasis.GST-π and Topo-Ⅱ in gastric cancer tissues are negatively correlated.