MMP-2、MMP-9在胃肠道间质瘤中的表达及其临床意义

目的：探讨基质金属蛋白酶（MMP）-2、MMP-9在胃肠道间质瘤（GIST）中的表达及其与预后的关系.方法：采用免疫组化方法检测54例GIST组织中的MMP-2、MMP-9的表达,分析与各病理参数的关系.结果：肿瘤组织中的MMP-2、MMP-9阳性率分别为85.2%、83.3%,并随着GIST恶性程度的增高,其表达均出现递增趋势,差异有显著性意义（P＜0.05）;与肿瘤良恶性、生长方式、肿瘤大小、肿瘤中心有无坏死亦有明显关系（P＜0.01）.单因素分析MMP-2、MMP-9阳性表达的患者有较高的5年生存率,多因素分析发现MMP-2、MMP-9共表达能独立预测患者的5年生存率.结论：MMP-2、MMP-9在GIST中的表达率可以作为判断GIST性质、恶性程度、转移及预后的客观指标.

Clinical significance of MMP-2、MMP-9 expression in gastrointestinal stromal tumor

Objectives:To evaluate the clinical significance of MMP-2,MMP-9 expression in gastrointestinal stromal tumor.Methods:54 of GIST were studied for MMP-2,MMP-9 by immunohistochemical staining,and the relationship of MMP-2,MMP-9 with each pathological factor were analyzed.Results:The positive expression of MMP-2,MMP-9 was 85.2%(46/54) ,83.3%(43/54) respectively.The expression of MMP-2,MMP-9 increased significantly according to the malignant increasing(P<0.01) and associated with pattern of tumor growing,tumor size,and centre necrosis(P<0.01) .In univariate analysis,MMP-2,MMP-9 were significantly associated with tumorfree survival.In multi-variate analysis,co-expression of MMP-2 and MMP-9 was unfavorablely related with tumor free survival(RR=2.487:P<0.05) .Conclusion:Over-expression of MMP-2 and MMP-9 in GIST judge the malignant degree and predicting the prognosis of patients with GIST.