食管癌组织中上皮钙黏素、CD44v6和血管内皮生长因子C 表达与淋巴结转移的关系

 目的　探讨上皮钙黏素（E-cad）、CD44v6和血管内皮生长因子C（VEGF-C）在食管癌组织中的表达及其与淋巴结转移的关系。方法　应用免疫组织化学EnVision两步法，检测56例食管鳞状细胞癌（鳞癌）组织（区域淋巴结转移组32例，非转移组24例）和12例食管切缘正常黏膜组织中E-cad、CD44v6和VEGF-C的表达情况。结果　E-cad在56例食管鳞癌组织中的阳性表达率为55.4 %（31／56），显著低于食管切缘正常黏膜组织的100.0 %（12／12）（P＜0.05）；CD44v6和VEGF-C在食管鳞癌组织中的阳性表达率分别为71.4 %（40／56）和62.5 %（35／56），显著高于食管切缘正常黏膜组织的25.0 %（3／12）和16.7 %（2／12）（P＜0.05）；E-cad在区域淋巴结转移组阳性表达率为31.3 %（10／32），明显低于非转移组的87.5 %（21／24）（P＜0.05）；CD44v6和VEGF-C在区域淋巴结转移组阳性表达率分别为84.4 %（27／32）和75.0 %（24／32）明显高于非转移组54.2 %（13／24）和45.8 %（11／24）（P＜0.05）；E-cad表达与食管癌淋巴结转移呈负相关，CD44v6和VEGF-C表达与淋巴结转移呈正相关，差异有统计学意义（P＜0.05）。结论　E-cad、CD44v6、VEGF-C在食管鳞癌淋巴结转移过程中起重要作用，联合检测有助于判断食管癌的生物学行为和预后。

Relationship between the expression of E-cadherin, CD44v6 and VEGF-C and lymph node metastasis in esophageal carcinoma

Objective To investigate the expression of E-cadherin (E-cad), CD44v6 and VEGF-C in esophageal carcinoma and investigate their relationship with lymph node metastasis. Methods The expression of E-cad, CD44v6 and VEGF-C was detected with immunohistochemical EnVision method in 56cases of esophageal carcinoma and 12 cases of normal esophageal mucosa. Results Among 56 cases of esophageal carcinoma, the positive expression rates of E-cad in esophageal carcinoma was 55.4 %(31/56),significantly lower than that in normal esophageal mucosa 100.0 %(12/12) (P ＜0.05). The positive expression rates of CD44v6 and VEGF-C were 71.4 % (40/56) and 62.5 % (35/56), significantly higher than that in normal esophageal mucosa (P ＜0.05). The positive rates of E-cad was 31.3 % (10/32) in the group of positive lymph node metastasis, significantly lower than that in the group of positive non-lymph-node metastasis 87.5 % (21/24) (P＜0.05). The positive rates of CD44v6 and VEGF-C were 84.4 % (27/32) and 75.0 % (24/32) in the group of positive lymph node metastasis ,significantly higher than that in the group of positive non-lymph-node metastasis 54.2 % (13/24) and 45.8 %(11/24) (P＜0.05). E-cad was negatively correlated with lymph node metastasis; CD44v6 and VEGF-C were positively correlated with lymph node metastasis (P ＜0.05). Conclusion E-cad, CD44v6 and VEGF-C play important roles in the process of soakage and metastasis of esophageal carcinoma. The combined detection of E-cad, CD44v6 and VEGF-C can help to prodict biological behaviors and prognosis of esophageal carcinoma.