Cyclooxygenase-2 expression and biological characteristics, prognosis in gastric carcinoma
YIN Xinguang, YANG Zhihong, WANG Bo, WANG Guihua, CAO NingzhuThe Second Hospital of Jiaxing city, Jiaxing 314000
Objective To explore expression of cyclooxygenase-2 (COX-2) and its relationship with biological characteristics and prognosis of gastric cancer. Methods The streptavidin-peroxidase immunohistochemistry was used to detect cyclooxygenase-2 expression in 102 cases of gastric cancerous tissues. All cases were followed up after operation, the discrepancy of cyclooxygenase-2 expression was compared with biological characteristics and prognosis of gastric cancer. Results The cyclooxygenase-2 expression rates in gastric carcinoma tissue was 67.65%. The level of cyclooxygenase-2 expression had significant correlations with site, lymph node metastasis, depth invaded and TNM stage of gastric carcinoma (P 0.05). There was no correlation between cyclooxygenase-2 expression and histological differentiation of gastric carcinoma (P 0.05). The survival analysis showed that the three-year survival rate in the cyclooxygenase-2 positive cases were lower than that in the cyclooxygenase-2 negative cases. Conclusion The level of Cox-2 expression is significantly related to the biological characteristics of gastric carcinoma and it plays an important role in prognosis of gastric carcinoma.