环氧化酶-2在喉鳞状细胞癌中的表达及其与微血管密度的关系

目的：检测喉鳞状细胞癌（LSCC）中环氧化酶-2（COX-2）、兔抗人Ⅷ因子（FⅧ）的表达，探讨LSCC中COX-2的表达情况与微血管密度（MVD）的关系。方法：利用免疫组织化学SABC法检测42例LSCC及其癌旁正常组织中COX-2、FⅧ的表达，分析其与LSCC的临床病理、淋巴结转移、MVD等的关系。结果：LSCC组织中COX-2阳性率为71．4％，癌旁正常组织中COX-2的阳性率为19．1％，肿瘤组织中COX-2的表达明显高于癌旁正常组织，差异有统计学意义（P〈0．05）；COX-2在LSCC中的表达与患者的性别、年龄、病变原发部位、分化程度和T分期无关（均P〉0．05）：与病理分期、颈淋巴结转移和MVD密切相关。结论：COX-2在LSCC中的高表达对肿瘤的发生、发展及淋巴结转移起促进作用，COX-2可能是促进肿瘤血管形成的主要因子。

The expressiong of cyclooxygenase-2 in laryngeal squamous cell carcinoma and its relationship with MVD

OBJECTIVE: To investigate the expression of cyclooxygenase-2 in laryngeal squamous cell carcinoma and the correlation with tumor angiogenesis. METHOD: The COX-2 and FVIII of 42 cases of laryngeal squamous cell carcinoma were detected by immunohistochemical SABC method,and the correlation between the expression rates, clinical significance and microvessel density(MVD) was analyzed. RESULT: The positive rate of COX-2 in laryngeal squamous cell carcinoma tissues and adjacent normal tissues were 71.43% and 19.05% respectively. The expression of COX-2 were not associated with age, sex, tumor site and T stage. The tumors of grade III approximately IV showed a higher COX-2 expression than tumors of grade I approximately II did and the expression of COX-2 in the cervical lymph node metastasis group was higher than that in the non-metastasis group. The expression of COX-2 was closely associated with microvessel density(MVD) of laryngeal squamous cell carcinoma. CONCLUSION: The expression of COX-2 may play a crucial role in the carcinogenesis and development of laryngeal squamous cell carcinoma and cervical lymph node metastasis in patients with laryngeal squamous cell carcinoma. COX-2 may be a important factor in tumor angiogenesis.