EphA2/EphrinA1在胃癌组织中的表达及与血管生成的关系

目的探讨EphA2与其配体EphrinA1在胃癌组织中的表达及与肿瘤血管生成的关系。方法利用免疫组织化学法检测82例胃癌手术切除标本中癌组织、癌旁组织及正常胃黏膜中EphA2、EphrinA1的表达,并采用CD34抗体标记微血管内皮细胞,计算微血管密度（MVD）。分析EphA2、EphrinA1的表达与MVD之间的相关性及其与胃癌临床病理特征的关系。结果胃癌组织中EphA2、EphrinA1的表达及MVD显著高于癌旁组织及正常胃黏膜（P〈0.01）;EphA2、Eph-rinA1表达水平及MVD值与胃癌的分化程度、浸润深度及淋巴结转移有关（P〈0.05）,MVD值还与肿瘤直径有关（P〈0.05）;Spearman等级相关分析表明,EphA2、EphrinA1表达分别与MVD呈显著正相关（r=0.485,P〈0.01;r=0.512,P〈0.01）。结论EphA2及其配体EphrinA1在胃癌组织中特异性高表达,可能参与肿瘤血管的生成,在胃癌的发病及恶性进展中发挥重要作用。

EphA2/EphrinA1 expressions in human gastric carcinoma and their relationship with angiogenesis

Objective To investigate the expressions of EphA2 and its ligand EphrinA1 and their relationship with angiogenesis in gastric carcinoma. Methods Expressions of EphA2,EphrinA1 and CD34-stained microvessel density (MVD) were detected by immunohistochemical assay in gastric carcinoma tissues,adjacent tissues (1.5 to 2 cm from the mass) and normal gastric mucosa (5 to 10 cm from the mass) from 82 cases. The correlations among EphA2 and EphrinA1 expressions,MVD and clinic pathological features were analyzed. Res...