RESUMEN
Objective To investigate the expression of transforming growth factor?1(TGF-?1)in human colorectal carcinoma and its value for predicting the prognosis.Methods The expression of TGF-?1 and vascular endothelial growth factor(VEGF)was measured in specimens of 52 coloreetal cancers by immunohistoehemistry.The features of clinical pathology were analyzed and the follow-up of all patients were conducted.The correlation between the expression of TGF-?1 and the survival time was studied with Log-rank test.Results Of 52 patients,no expression of TGF-?1 and VEGF was observed in 11 and 14 patients,and the expression was noticed in 41 and 38 patients,respectively.There was a signifi- cant positive correlation between expression of TGF-?1 and expression of VEGF(x~2＝0.633,P＜0.01). Furthermore,the expression of TGF-?1 was significantly correlated with Dukes staging(x~2＝19.866,P＜0.01)and metastasis of lymph nodes(x~2＝13.152,P＜0.01).The 3-year overall survival rates(OSR)in all patients was 49.1% and the 3-year OSR of patients with and without expression of TGF-?1 were 20.5% and 69.2% respectively(x~2＝11.64,P＝0.0006).Conclusion The expression of TGF-?1 could be served as an important predicator for prognosis of coloreetal carcinoma.