LIVIN、PTEN在胃癌组织中的表达及其临床意义

目的 分析凋亡抑制蛋白LIVIN和磷酸酯酶基因PTEN在胃癌组织中的表达情况,探讨其与多个临床病理因素的关系以及二者之间的相关性.方法 采用免疫组化SP法检测65例胃癌标本黏膜组织中LIVIN、FIEN在胃癌组织中的表达,另选取15例癌旁正常胃黏膜组织作为对照.结果 LIVIN在胃癌组织中的阳性表达率为73.85%(48/65),明显高于正常胃黏膜组织的26.67%(4/15),差异有统计学意义(P<0.05).PTEN在胃癌组织中的阳性表达率为30.77%(20/65),明显低于正常胃黏膜组织的66.67%(10/15),差异有统计学意义(P<0.05).PTEN和LIVIN的阳性表达率与肿瘤浸润深度、分化程度、淋巴结转移及TNM分期密切相关,而与患者性别、年龄、肿瘤直径无关.LIVIN与PTEN的表达呈负相关(r=0.362,P=0.003).结论 LIVIN蛋白表达增高和PTEN蛋白表达下调是胃癌发生、发展、侵袭及转移重要的生物学标志,联合检测LIVIN、PTEN蛋白的表达可为胃癌患者治疗方案的制定和预后判断提供重要依据.

Expression and clinical significance of LIVIN and PTEN in gastric cancer

Objective To study the expression of LIVIN and PTEN in human gastric cancer and evaluate their clinical significance. Methods The expressions of LIVIN and PTEN were detected by immunohistochemical method in the tissues of 65 primary gastric cancer and 15 normal gastric mucosae. Results The positive expression rate of LIVIN in gastric cancer tissues was significantly higher than that in normal tissues 73.85%(48165) vs 26.67%(4/15)], and the positive expression rate of PTEN was obviously lower than that in normal tissues 30.77%(20/65) vs 66.67%(10/15)](P < 0.05). The positive expressions of LIVIN and PTEN were closely correlated with tumor depth of gastric cancer, histological differentiation grade, lymph node metastasis and TNM stage. The expressions of LIVIN and PTEN had a significant positive correlation (r = -0.362,P =0.003). Conclusion LIVIN and PTEN may play important roles in carcinogenesis of gastric cancer, which may be considered as reliable markers in clinical diagnosis and the prognosis of gastric cancer.