口腔鳞癌中血管内皮生长因子C、受体3和抑癌基因nm23-H1的表达及意义

目的探讨血管内皮生长因子C（vascular endothelial growth factor C，VEGF-C）、受体3（vascular endothelial growth factor receptor-3，VEGFR-3）和抑癌基因nm23-H1的表达在口腔鳞状细胞癌（oral squamous cell carcinoma，OSCC）淋巴转移中的作用。方法对经病理证实的OSCC60例切片采用免疫组化SP法检测VEGF-C、VEGFR-3和nm23-H1的表达，计数肿瘤淋巴管密度（lymphatic vessels density，LVD），结合临床病理因素进行分析。结果OSCC中VEGF-C蛋白阳性率为58．3％，LVD为（8．43±2．64）个／高倍镜下和nm23-H。阳性表达，三者均明显差异于癌前病变和良性病变（P〈0．05），VEGF-C表达和LVD、淋巴结转移相关（P〈0．01）；nm23-H1表达与淋巴结转移、临床分期和组织学分级相关（P〈0．05）。结论在OSCC淋巴转移中VEGF-C、VEGFR-3高表达和nm23-H1蛋白缺失起重要作用，三者的检测结果对深入探讨肿瘤淋巴转移机制有参考价值。

Expression of vascular endothelial growth factor, vascular endothelial growth factor receptor-3 and nm23-H1 in oral squamous cell carcinoma

OBJECTIVE: To explore the role of vascular endothelial growth factor C (VEGF-C), VEGFR-3 and nm23-H(1) in lymphatic metastasis of oral squamous cell carcinoma (OSCC). METHODS: The expression of VEGF-C, VEGFR-3 and nm23-H(1) were examined by immunohistochemical SP method. The lymphatic vessels density (LVD) in tumors was counted and analyzed withclinicopathologic parameters. RESULTS: VEGF-C, LVD and nm23-H(1) expressions were significantly different between OSCC and benign and precancerous lesions (P < 0.05). VEGF-C was correlated with lymph node metastasis and LVD (P < 0.01). nm23-H(1) was related to clinical stage, histological grade and lymphatic metastasis (P < 0.05). CONCLUSIONS: The high expressions of VEGF-C/VEGFR-3 and inactivation of nm23-H(1) may play an important role in lymphatic metastasis in OSCC.