基质金属蛋白酶-2在胰腺癌组织中的表达及其临床意义

目的 探讨基质金属蛋白酶2(MMP-2)在胰腺癌组织中的表述及其与肿瘤临床病理特征的关系.方法 采用S-P免疫组织化学法检测36例胰腺癌(胰腺癌组)组织及14例正常胰腺(对照组)组织中MMP-2的表达.结果 胰腺癌组织中MMP-2的表达率为66.7%(24/36),正常胰腺组织中表达率为14.3%(2/14),2组比较差异有统计学意义(χ2=3.587,P<0.01);有淋巴结转移的胰腺癌组织MMP-2表达率为86.7%(13/15),高于无淋巴结转移者的52.4%(11/21),2组比较差异有统计学意义(χ2=4.629,P<0.05);胰腺癌TNM分期中Ⅰ期和Ⅱ期MMP.2表达率为41.2%(7/17),Ⅲ期和Ⅳ期表达率为89.5%(17/19),2组比较差异有统计学意义(χ2=9.418,P<0.01);胰腺癌高分化、中分化和低分化组织MMP-2表达率分别为50.0%(5/10)、66.7%(10/15)和72.8%(8/11),组间比较差异无统计学意义(χ2=1.073,P>0.05).结论 MMP-2在胰腺癌组织中表达明显增强,并与胰腺癌侵袭转移密切相关,可视为反映胰腺癌侵袭特性的又一标志物.

The expression and clinical significance of matrix metalloproteinase-2 in human pancreatic carcinoma.

Objective To investigate the expression of matrix metalloproteinase-2 (MMP-2)in pancreatic carcinoma and the relationship between MMP-2 with tumour clinicopatholngical features. Methods The expression of MMP-2 was detected by S-P immunohistochemistry in 36 cases with pancreatic carcinoma and 14 normal pancreat-ic tissues. Results The positive expression rate of MMP-2 was 66.7% (24/36) in pancreatic carcinoma tissue and 14.3% (2/14) in normal pancreatic tissues (χ2 = 3. 587, P < 0.01 ) ;The expression rate of MMP-2 in pancreatic carcinoma tissue with positive-node was 86.7% ( 13/15 ) ,which was higher than that with negative-node,which was 52.4% ( 11/21 ) ( P < 0.05 ) ; As to TNM staging in pancreatic carcinoma, the expression rate of MMP-2 was 41.2% (7/17) with Ⅰ,Ⅱ staging and 89.5% (17/19) with Ⅲ,Ⅳ staging(χ2=9.418,P <0. 01 ) ;The expression rate of MMP-2 was 50.0% (5/10) ,66.7% (10/15) and 72.8% (8/11) in highly,moderately and poorly differentiated pancreatic carcinoma(P > 0.05 ). Conclusions The expression of MMP-2 is strengthened significantly in pancreatic carcinoma tissue and involved in turnout invasion and metastasis features; MMP-2 might be regarded as one more marker for the invasive properties of pancreatic carcinoma.