膜型基质金属蛋白酶-1在食管癌组织中的表达及其临床意义

目的 研究食管癌组织中膜型基质金属蛋白酶-1(MT1-MMP)的表达及其临床意义.方法 用免疫组织化学法检测54例食管癌患者的癌组织、正常组织MT1-MMP的表达.结果 食管癌患者的癌组织MT1-MMP的阳性表达率(87.0%)与正常组织的阳性表达率(7.4%)比较差异有统计学意义(P＜0.01).MT1-MMP的表达程度随着肿瘤浸润深度的增加而加强(P＜0.01),MT1-MMP的表达程度与区域淋巴结转移、食管癌分化程度、食管癌术后3年转移和/或复发有关(P＜0.01).结论 食管癌组织中MT1-MMP的表达与食管癌的肿瘤浸润深度、淋巴结转移情况、分化程度和预后有密切关系,MT1-MMP在食管癌的侵袭和转移中起着十分重要的作用.

The expression of membrane type 1 matrix metalloproteinase in the esophageal carcinoma tissues and its clinical significance

Objective To investigate the expression of membrane type 1 matrix metalloproteinase(MT1-MMP) in the esophageal carcinoma tissues and in normal periearcinomatous tissues and its clinical significance. Methods Immunohistochemistry was used to study the expression of MT1-MMP in esophageal carcinoma tissues and normal tissues in distance for 5-7 em from tumor. Results Among 54esophageal carcinoma specimens, the positive expression rate of MT1-MMP was 87.0%, while all of themwere expressed a small quantity in normal esophageal epithelial tissues, the expression in the esophageal carcinoma tissues was significantly higher than those in normal esophageal epithelial tissues (P ＜ 0.01 ).The degree of MT1-MMP expressions was associated with the depth of tumor invasion (P ＜ 0.01 ), the invasion of the lymph nodes(P ＜ 0.01 ) and the relapse and/or metastasis of the tumors for three years after surgery(P ＜0.01 ), and was also related to differentiation of tumor cells (P ＜ 0.01 ). Conclusions The expression of MT1-MMP in the esophageal carcinoma tissues is well associated with the depth of tumor invasion, the invasion of the lymph nodes, the differentiation of tumor cells and relapse and/or metastasis of the tumors for three years after surgery. MT1-MMP plays an important rote in the invasion and metastasis in the patients with esophageal carcinoma.