食管贲门癌患者血清sMICA检测的临床意义

目的评价可溶性人类MHC-1类分子链相关基因A蛋白（sMICA）检测对食管贲门癌患者的临床诊断价值。方法应用酶联免疫法对50例术前食管贲门癌患者和其中27例术后患者及20名健康人血清sMICA含量进行测定，并对血清sMICA含量的差异进行分析。结果食管癌患者血清sMICA含量为（322．42±9．09）pg／ml，明显高于健康人的（176．00±11．69）pg／ml，差异有统计学意义（P〈0．01）；在TNM分期中，sMICA含量Ⅱ、Ⅲ、Ⅳ期依次增高（P〈0．05）；有淋巴结转移患者的sMICA含量均高于无淋巴结转移的患者（P〈0．01）；在组织病理分型中，腺癌患者血清sMICA含量高于鳞状细胞癌患者（P〈0．01）；Ⅲ期患者术前血清sMICA含量均高于术后，差异有统计学意义（P〈0．01）。结论血清sMICA的检测有助于食管贲门癌的临床辅助诊断，对判断食管贲门癌生物学行为及预后有一定临床意义，sMICA可能成为新的肿瘤标志物指标之一。

Detection and clinical application of serum soluble MICA protein in patients with esophageal carcinoma or cardiac carcinoma and its significance

Objective To evaluate the diagnosis and the clinical application value of serum soluble MICA protein in patients with esophageal carcinoma or cardiac carcinoma.Methods The serum sMICA was concomitantly determined by ELISA in 50 preoperative patients with esophageal carcinoma or cardiac carcinoma and 20 healthy controls.Results The level of serum sMICA in patients was significantly higher than that in controls[(322.42±9.09)pg/ml,(176.00±11.69)pg/ml](P＜0.01).In patients with TNM stage Ⅱ,Ⅲ,Ⅳ,the level of serum sMICA increased significantly in order(P＜0.05).In patients with lymph node metastasis.the level of serum sMICA was significantly higher than that without lymph node metastasis.The level of serum sMICA in patients with imbricate carcinoma was higher than patients with glandiform carcinoma.In patients with TNM stageⅢ.the level of serum sMICA after operation was significantly lower than that before operation.ConclusionSerum sMICA could be an assistant indicator for esophageal carcinoma or cardiac carcinoma.sMICA could be considered as a new tumour symbol to evaluate the biological behavior and prognosis of esophageal and cardiac carcinoma.