血管内皮生长因子C蛋白在喉鳞癌中的表达与颈淋巴结转移的关系

目的研究血管内皮生长因子C（VEGF-C）蛋白在喉鳞癌和正常组织中的表达情况，探讨其与临床相关因素以及淋巴转移的关系，了解VEGF-C蛋白在喉癌颈淋巴结转移中的作用。方法采用免疫组化法分别检测46例喉鳞癌癌内组织、癌旁组织和正常组织中VEGF-C蛋白的表达，观察并分析其表达与肿瘤病理分化程度、T分期、肿瘤临床分型及颈淋巴结转移等临床病理因素之间的关系。结果喉鳞癌组织不同部位的VEGF-C蛋白表达明显不同。＂~GF-C在癌内、癌旁及正常组织中均有表达，但癌内组织的表达阳性率明显高于癌旁组织和正常组织，其表达与肿瘤病理分化程度、T分期、肿瘤临床分型及颈淋巴结转移密切相关，而VEGF-C在癌旁组织中的表达与这些因素无显著相关。结论喉癌细胞分泌VEGF-C诱导癌内和癌周淋巴管增生扩张是喉癌发生颈淋巴结转移的重要因素之一，VEGF-C检测有望作为临床早期判断和预测颈淋巴结转移的指标之一。

Expression of VEGF-C protein and its correlation with cervical lymphatic node metastasis in laryngeal squamous carcinoma

Objective To study the expression of vascular endothelial growth factor C (VEGF-C), which is known to be capable of inducing cell proliferation of lymphatic endothelium and development of lymphatic vessels, and to study its correlation with cervical lymph node metastasis in human laryngeal carcinomas. Methods The expression of VEGF-C protein in the cancer, its adjacent tissue, and normal tissue obtained from resected specimens of 46 cases of laryngeal cancer was assessed with an immunohistochemical staining assay followed by light microscopic examination, and its relationship with cervical lymph node metastasis was analyzed. Results Immunohistochemical staining of VEGF-C was different obviously in different localities of the resected. The expression of VEGF-C protein was observed in all the central portion, peripheral tissue, and normal tissue of the postoperative specimens. The positive rate of intratumoral VEGF-C was significantly higher than that of adjacent and normal tissue. It was also noted that the positive rate of intratumoral VEGF-C was well correlated with pathological grades, T stages and stages of lymph node metastasis. Conclusions The results suggested that VEGF-C may be a factor of lymphatic metastasis of laryngeal cancer, and it is possible to be used as a predictor of lmphatic metastasis of laryngeal cancer.