食管胃连接部癌中Ezrin、AQP5的表达

Expression of Ezrin and AQP5 in carcinoma of esophagogastirc junction

目的观察Ezrin、AQP5蛋白在冀南地区食管胃连接部癌中的表达和相关性,探讨其生物学行为。方法应用免疫组化Max Vision法检测10例正常胃组织、40例异型增生胃黏膜组织和165例食管胃连接部癌组织中Ezrin、AQP5蛋白的表达。结果Ezrin、AQP5蛋白在正常胃组织、异型增生胃黏膜组织和食管胃连接部癌组织中的阳性率依次增高,分别为10%、45%、72.7%和20%、32.5%、65.5%。二者在三组间相比差异均有显著性(P<0.05)。Ezrin、AQP5蛋白在分化程度低、侵及浆膜层及有淋巴结转移的食管胃连接部癌中的表达均明显高于分化程度高、未侵及浆膜层以及无淋巴结转移组(P<0.01)。Ezrin与AQP5在食管胃连接部癌中表达呈正相关性(P<0.05)。结论 Ezrin和AQP5在食管胃连接部癌中均高表达,且呈正相关关系,二者可能起协同作用,共同参与食管胃连接部癌的侵袭和转移。

Purpose To investigate the expression of the protein of Ezrin and AQP5 in the normal, dysplasia gastric and carcinoma of esophagogastirc junction tissues and to find out their relationship with the biologic behavior of the carcinoma of esophagogastirc junction in the southern area of Hebei Province. Methods Ezrin and AQP5 proteins were detected by immunohistochemical staining in 10 ca-ses of normal gastric tissue, 40 cases dysplasia and 165 cases of the carcinoma of esophagogastirc junction tissues, respectively. Re-sults All of the expression levels of Ezrin and AQP5 protein were increasing according to the order of normal-dysplsia-carcinoma. The expression rate of Ezrin was 10%, 45% and 72. 7%, while the rate of AQP5 with 20%, 32. 5% and 65. 5% in the normal, dysplasia and carcinoma subgroup. The expression rates of each protein were significantly different among the three groups （P〈0. 05）. The ex-pression of them in the subgroup of poorly-differentiated with serosa invasion and lymph nodes metastasis was significantly higher than the other subgroup of well-differentiated with non serosa invasion or lymph nodes metastasis （P〈0. 05）. There was a positive correla-tion between the expression of Ezrin and AQP5 proteins in the carcinoma of esophagogastirc junction （P〈0. 05）. Conclusions Over-expression of Ezrin and AQP5 is detected in the carcinoma of esophagogastirc junction, with positive relationships, which probably helps the invasiveness and metastasis in the carcinoma of esophagogastirc junction synergistically.