PTEN蛋白和CD44v6检测在提示喉癌分化程度和颈部淋巴结转移中的作用

目的探讨PTEN蛋白和CD44v6检测在提示喉鳞状细胞癌（以下简称喉癌）分化和颈部淋巴结转移中的作用。方法运用免疫组织化学SP法，检测97例喉癌组织标本和距离病变范围2．5cm以上的癌旁组织中PTEN蛋白和CD44v6的表达情况。进行合理的统计学设计，分析各项指标之间的相互关系及其与喉癌某些临床指标之间的关系。结果PTEN蛋白在喉癌组中表达率为55．67％（54／97），癌旁组中为100％（97／97），二者差异有统计学意义（P〈0．01）。PTEN蛋白的表达在高、中、低分化不同组织类型中的差异具有统计学意义（P〈0．05），但在颈部淋巴结转移阳性组和阴性组中表达差异无统计学意义（P〉0．05）。CD44v6在颈部淋巴结转移阳性组的表达明显高于阴性组，差异有统计学意义（P〈0．05），且在高、中、低分化不同组织类型中的表达差异也有统计学意义（P〈0．05）。PTEN蛋白低表达与CD44v6高表达呈负相关性（r=-0．652，P〈0．05）。结论PTEN蛋白对预测喉癌颈部淋巴结转移无意义，但对提示其分化程度具有一定意义。CD44v6在预测颈部淋巴结转移及提示喉癌分化程度中均具有统计学意义。

The importance of PTEN protein and CD44v6 detection to the prediction of laryngocarcinoma differentiation and cervical lymph node metastasis

Objective To investigate the importance of PTEN protein and CD44v6 detection to the prediction of laryngeal carcinoma differentiation and cervical lymph node metastasis. Methods The expressions of PTEN protein and CD44v6 were detected by immunohistochemical SP method in 97 specimens with laryngeal carcinoma and 97 specimens with a distance over 2.5 centimeters from laryngeal carcinoma. The relations between them and their clinical significance to the laryngeal squamous cell carcinoma above Glottis by the statistical analyses tools were revealed. Results The positive expression rates of PTEN protein were respectively 55.67 %, 100 % in laryngeal carcinoma and adjacent carcinoma tissue. There was a significant difference between them statistically (P<0.01). The positive expression rates of PTEN protein are notable difference among the high, middle and low differentiation of laryngeal carcinoma, but not between the positive metastasis of lymph node of neck and the negative one(P >0.05). For the expression of CD44v6, there were notable statistical difference not only among the different differentiation of laryngeal careinoma, but also between the positive metastasis of lymph node of neck and the negative one. The low expressions of PTEN protein and the high expression of CD44v6 in the same carcinoma cell has significant negative correlation (P< 0.05). Conclusion PTEN protein may have the importance to the differentiation of laryngeal carcinoma, but no means to cervical lymph node metastasis. CD44v6 may have great importance to both.