胃癌组织中Survivin、TrkB和BDNF的表达及意义

目的 观察生存素基因蛋白(Survivin)、酪氨酸激酶受体B(TrkB)及其配体脑源性神经营养因子(BDNF)在胃癌组织和癌旁黏膜中的表达情况,探讨和分析Survivin、TrkB和BDNF与胃癌临床病理学参数的关系.方法 采用免疫组化SP法检测64例原发性胃癌组织、癌旁黏膜组织和34例淋巴结癌转移组中对应的阳性淋巴结Survivin、TrkB和BDNF蛋白的表达,分析其与临床病理学特征的关系.结果 胃癌组织中Survivin、TrkB和BDNF蛋白的阳性表达率分别为71.87%(46/64)、60.93%(39/64)和59.37%(38/64),而癌旁黏膜组织无一例表达.Survivin、TrkB和BDNF蛋白表达与患者性别、年龄、肿瘤分化程度等无关(P>0.05),而与浸润深度、淋巴结转移和TNM分期有关.浸润至胃壁全层组、有淋巴结转移组和TNM分期Ⅲ～Ⅳ组的Survivin、TrkB和BDNF阳性表达率明显高于未浸润至胃壁全层组、无淋巴结转移组和TNM分期Ⅰ～Ⅱ组(分别P<0.01).研究还显示,Survivin与TrkB和BDNF的阳性表达率随着肿瘤不同浸润深度、有无淋巴结转移呈现相同的变化趋势,相关分析表明,Survivin阳性表达与TrkB和BDNF呈正相关(P<0.05).胃癌转移组Survivin、TrkB和BDNF蛋白在淋巴结转移癌中的阳性表达率(82.35%,28/34;76.47%,26/34;70.58%,24/34)均较原发癌(88.23%,30/34;85.29%,29/34;82.35%,28/34)低,但两者差异无显著性(分别P>0.05).结论 Survivin、TrkB和BDNF表达与胃癌发生发展密切相关,联合检测Survivin、TrkB和BDNF可有助于判断胃癌局部侵袭和远处转移的能力.

Expression and significance of survivin,TrkB and BDNF in gastric carcinoma

Purpose To investigate the expression of survivin,TrkB and BDNF proteins in human gastric carcinomas,and compare with that in matched para-tumor mucosal tissues,in order to evaluate their clinicopathological significance.Methods The expression of survivin,TrkB and BDNF protein in the tumor and matched para-tumor mucosal tissues from 64 cases of gastric carcinoma was detected immunohistochemcally.Results The positive rates of survivin,TrkB and BDNF expression in the tumor tissues were 71.87%,60.93% and 59.37...