癌变·畸变·突变

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MMP-2和E-cadherin蛋白在食管黏膜病变中的表达

刘江惠,王晓旭,左连富*   

  1. 河北医科大学第四医院肿瘤研究所,河北  石家庄  050011
  • 收稿日期:2013-10-12 修回日期:2014-02-21 出版日期:2014-07-30 发布日期:2014-07-30
  • 通讯作者: 左连富,E-mail:ljh707@yeah.net
  • 作者简介:刘江惠(1964- ),女,河北省石家庄市人,本科,主任技师,研究方向:病理学技术。

Expressions of MMP-2 and E-cadherin in esophageal mucosal lesion Expressions of MMP-2 and E-cadherin in esophageal mucosal lesion

  • Received:2013-10-12 Revised:2014-02-21 Online:2014-07-30 Published:2014-07-30

摘要:

目的: 探讨MMP-2和E-cadherin蛋白在食管黏膜病变中的表达及其与食管癌的发生及转移的关系。方法:采用免疫组织化学方法对45例食管癌组织、21例不典型增生组织、24例正常组织中MMP-2和E-cadherin蛋白的表达进行检测,并分析MMP-2和E-cadherin表达与食管癌发生发展过程中各项病理指标的关系。结果:MMP-2蛋白在癌组织中的表达率为40.00%(18/45),在不典型增生组织中的表达率为38.10% (8/21),在正常组织中表达率为4.17%(1/24),三者间差异具有统计学意义(P<0.05);有淋巴结转移组的MMP-2蛋白阳性表达率(55.56%,15/27)明显高于无淋巴结转移组(16.67%,3/18);有纤维膜浸润组MMP-2蛋白的阳性表达率(48.57%,17/35)明显高于无纤维膜浸润组(10.00%,1/10)。E-cadherin蛋白在正常的食管黏膜上皮组织阳性表达为100% (24/24),在不典型增生组织中的阳性表达率为71.43%(15/21),在癌组织中的阳性表达率为28.89%(13/45),较前两组明显降低(P<0.05)。E-cadherin与MMP-2蛋白的表达呈负相关(χ2=4.615,r=-0.793,P<0.05)。结论:MMP-2蛋白的高表达和E-cadherin蛋白的低表达可能与食管癌的发生和转移有关,在食管癌的侵袭、转移过程中MMP-2与E-cadherin有拮抗作用。

关键词: 食管黏膜病变, MMP-2, E-cadherin, 免疫组化

Abstract:

OBJECTIVE: To explore the relationship between the protein expressions of MMP-2 and E-cadherin and the development and metastasis of esophageal carcinoma. METHODS:The expressions of E-cadherin protein and MMP-2 protein were examined by immunohistochemistry (IHC) in 45 cases of esophageal carcinoma,21 cases of atypical hyperplasia and 24 cases of normal esophageal mucosa tissues. RESULTS:The positve rates of MMP-2 protein were 40.00% (18/45) in esophageal carcinoma,38.1% (8/21) in esophageal atypical hyperplasia and 4.17% (1/24) in normal tissues. There were significant differences among three groups (P<0.05). Additionally,the expression of MMP-2 protein had a correlation with lymph node metastasis (P<0.05). The positve rate of MMP-2 protein in esophageal cancer tissues with lymph node metastasis was 55.56% (15/27) , significantly higher than that in esophageal cancer tissues without lymph node metastasis (16.67%,3/18). The positve rate of MMP-2 protein in esophageal cancer tissues with fibrous membrane infiltration was higher than that in esophageal cancer tissues without fibrous membrane infiltration(48.57%,17/35;10.00%,1/10). The positive rate of E-cadherin protein in normal tissues (100%) was much higher than that in esophageal carcinoma (28.89%) and esophageal atypical hyperplasia (71.43%). According to these results,the expression of E-cadherin protein had a negative correlation with the expression of MMP-2 protein (χ2=4.615,r=-0.793,P<0.05). CONCLUSION:There were significant relationships between the high expression of MMP-2 protein and low expression of E-cadherin protein with the development and metastasis of esophageal carcinoma. Furthermore,the expression of E-cadherin protein had a negative correlation with the expression of MMP-2 protein in the invasion and metastasis of esophageal carcinoma.

Key words: esophageal mucosal lesion, MMP-2, E-cadherin, immunohistochemistry