非小细胞肺癌中VEGF、CD44v6的表达及其与肺癌侵袭、转移及预后关系的研究

The clinical significance of detection of vascular endothelial growth factor and CD44v6 expression in human non-small cell lung cancer

目的 探讨血管内皮生长因子 (VEGF)和细胞粘附因子CD44v6在非小细胞肺癌组织中的表达及其与肺癌侵袭、转移及预后的关系。方法 回顾性分析 43例术前未进行化疗和放疗的非小细胞肺癌的切除标本 ,采用免疫组化S P法检测肺癌组织中的VEGF和CD44v6的表达。结果 鳞癌组织中VEGF的阳性表达率为 62 .5 0 % ( 15 / 2 4) ,腺癌组织中为 68.42 % ( 13 / 19) ,鳞癌组织中CD44v6的阳性表达率为 5 8.3 3 %( 14 / 2 4) ,腺癌组织中为 68.42 % ( 13 / 19)。VEGF及CD44v6的阳性表达与肺癌淋巴结的转移、肺癌的病理分期有密切关系 (P <0 .0 5 ) ,且与肺癌术后发生转移密切相关。VEGF阳性表达者的 3及 5年生存率分别为19.2 3 %及 6.41% ,阴性表达者为 64 .71%及 5 8.82 % ,两者之间差异显著 (P <0 .0 5 ) ;CD44v6阳性表达者的 3及 5年生存率分别为 18.67%及 10 .67% ,阴性表达者为 67.83 %及为 5 3 .5 0 % ,两者之间差异显著 (P <0 .0 5 )。VEGF的阳性表达和CD44v6的阳性表达显著相关。结论 联合检测VEGF和CD44v6表达对于非小细胞肺癌淋巴结转移、病理分期、术后转移复发的评估有一定临床意义 。

Objective To investigate the expression of vascular endothelial growth factor (VEGF) and CD44v6 in non-small cell lung cancer (NSCLC) and to explore their association with invasion, metastasis and prognosis of NSCLC. Methods A rapid immunohistochemical method (streptoavidin-peroxidase, SP) was used to detect VEGF and CD44v6 proteins expression in 43 paraffin-embedded resected NSCLC tissues retrospectively. All the patients were initially treated. Results The expression rates of VEGF in squamous cell carcinoma and adenocarcinoma were 62.5% (15/24) and 68.42% (13/19) respectively. The positive rates of CD44v6 expression in squamous cell carcinoma and adenocarcinoma were 58.33% (15/24) and 68.42% (13/19) respectively. The positive expressions of VEGF and CD44v6 were significantly correlated with lymph node metastasis and TNM stage (P<0.05), and also significantly correlated with postoperative hematogenous metastasis (P<0.05). The 3- and 5-year survival rates of patients with VEGF positive expression were 19.23% and 6.41% respectively, whereas those with negative expression were 67.41% and 58.82%, there was signi-ficant difference of survival rate between the two groups (P<0.05). The 3- and 5-year survival rates of CD44v6 positive expression group and negative expression group were 18.67%, 10.67% and 67.83%, 53.50%, there was also significance difference of survival rate between two groups (P<0.05). The positive expression of VEGF was significantly correated with the positive expression of CD44v6 (P<0.05). Conclusion Detection of VEGF and CD44v6 expression in NSCLC is helpful to evaluate the lymph node metastasis, TNM stage and prognosis. It is also helpful to guide postoperative multiple modality therapy.