Expression of hypoxia-inducible factor-1 and O~6-methylguanine DNA methytransferase in esophageal squamous cell carcinoma tissue

Abstract

Objective To investigate the expression of hypoxia-inducible factor-1α (HIF-1α) and O~6-methylguanine DNA methytransferase(MGMT) in esophageal squamous cell carcinoma(ESCC) tissue and its relation with the clinicopathalogy features. Methods The expression of HIF-1α, MGMT in 58 cases of ESCC were detected by immnohistochemical staining. Results The positive rates of HIF-1α,MGMT in ESCC tissue were 51.4%,39.6%, respectively. The positive expression rates of HIF-1α and MGMT were not correlated with the degree of sex,age,clinical stage and differentiation(P>0.05), but MGMT expression was correlated with differentiation and overall survival time (P 0.05), and HIF-1α was not correlated with overall survival time. Conclusions HIF-1α, MGMT play important roles in esophageal carcinoma,MGMT was correlated with the differentiation of esophageal carcinoma, respectively, which may be used as important indexes to evaluate the prognosis of esophageal carcinoma. Key words: Esophageal neoplasm ; Squamous cell carcinoma ; Hypoxia-inducible factor-1 ; O~6-methylguanine DNA methytransferase ;