VEGF、b-FGF、NOS_2和NOS_3在非小细胞肺癌的表达及其临床意义

Expressions of VEGF, b-FGF,NOS_2 and NOS_3 in human non-small cell lung cancer and the relationship between them and tumor angiogenesis and lymph node metastasis

目的 :研究血管内皮生长因子 (VEGF)、碱性成纤维细胞生长因子 (b -FGF)、一氧化氮合酶 2 (诱生型 ,NOS2 )、一氧化氮合酶 3(内皮型 ,NOS3)在非小细胞肺癌 (NSCLC)中的表达及其与肿瘤血管形成和淋巴结转移的关系。方法 :用免疫组化 (S -P法 )染色技术对 95例NSCLC石腊组织标本的VEGF、b -FGF、NOS2 和NOS3及肿瘤内微血管密度 (IMVD)进行检测和分析。结果 :VEGF、b FGF表达与TNM分期、IMVD及淋巴结转移有关 (P<0 .0 5) ,两者共表达与IMVD有关 (P <0 .0 1 )。NOS3与组织学分型、IMVD和淋巴结转移有关 (P <0 .0 5) ;NOS2与IMVD有关 (P <0 .0 5)。相关分析显示促血管形成因子 (VEGF、b FGF)与一氧化氮合酶 (NOS2 、NOS3)的表达呈正相关 (r=0 .30 1 8,P <0 .0 5)。结论 :VEGF和b FGF在促进血管形成和促进肿瘤转移方面可能起到协同作用 ,并且有NO的参与 ;VEGF、b FGF、NOS2

Purpose:To investigate the expression and distribution of VEGF, b FGF, NOS 2 and NOS 3 in human non small cell lung cancer (NSCLC),and to evaluate the relationship between their expression and tumor angiogenesis and lymph node metastasis.Methods:The expression of VEGF, b FGF, NOS 2, NOS 3 and IMVD in 95 patients with NSCLC were examined using immunohistochemical methods (SP), and the relationship between them and many clinicopathological parameters was analyzed.Results:The positive expression of VEGF and b FGF was associated with intratumor microvessel density(IMVD), TNM stage and lymph node metastases of NSCLC, respectively( P <0.05), positive expression of both them was associated with IMVD( P <0.05). The positive expression of NOS 3 was associated with histological subtype, of IMVD and lymph node metastases of NSCLC( P <0.05), while NOS 2 was associated with IMVD( P <0.05).Conclusions:VEGF and b FGF may be synergetic in tumor angiogenesis and lymph metastasis of human NSCLC, which may have the participation of NO. The detection of VEGF , b FGF, NOS 2 and NOS 3 may be valuable for prediction of human NSCLC metastasis and prognosis.