MMP-2、MMP-9在胃癌组织中的表达及其临床意义

目的探讨基质金属蛋白酶（MMP）中，MMP-2、MMP-9在胃癌组织中的表达及其临床意义。方法采用免疫组织化学SP法检测96例胃癌组织及癌旁正常组织中MMP-2、MMP-9的表达。结果胃癌组织中MMP-2、MMP-9阳性表达率分别为72．9％（70／96）及66．7％（64／96），均明显高于癌旁正常组织（30．2％和31．3％）（P值均〈0．001）；两者的表达均与肿瘤发生部位、浸润深度、临床分期及淋巴结转移呈明显的正相关（P值均〈0．05），而与患者年龄、性别、肿瘤大小和分化程度无显著相关性（P值均〉0．05）。结论MMP-2、MMP-9高表达与胃癌的临床病理特点和转移、预后密切相关，可作为判定胃癌生物学行为和预后的重要指标。

Expression and clinical significance of MMP-2 and MMP-9 protein in human gastric carcinoma

Objective To study the expression and clinical significance of MMP-2 and MMP-9 protein and their relationships in human gastric carcinoma. Methods MMP-2 and MMP-9 protein expression were examined by two-step immunohistochemistry in 96 cases of human gastric carcinoma and paracancerous normal tissue. Results The expression rate of MMP-2 and MMP-9 in gastric carcinoma tissue was 72.9 %(70/96)and 66.7 %(64/96) respectively, which was significantly higher than those in the normal tissue (30.2 % and 31.3 % respectively, P<0.001). The expression of MMP-2 and MMP-9 was significantly correlated with site, depth invaded,TNM stage and lymph node metastasis of gastric carcinoma (P <0.05), and not with age, sex, size, histological differentiation of gastric carcinoma(all P>0.05). Conclusion There are close relationships between the expressions of MMP-2, MMP-9 in gastric carcinoma and pathological characteristics in clinic metastasis and prognosis. They may be used as important indexes to judge the biological behavior and prognosis of gastric carcinoma.