SLeX和p16在甲状腺乳头状癌中的表达及其意义

目的探讨甲状腺乳头状癌（PTC）组织SLeX和p16基因蛋白表达与肿瘤侵袭转移的关系。方法应用微波-链霉菌素-生物素（微波-LSAB）法检测69例PTC组织SLeX和p16蛋白的表达。结果SLeX和p16阳性率分别为69．6％和58．0％，伴有浸润和颈部淋巴结转移者SLeX阳性表达率均显著高于无浸润和无淋巴结转移者（P〈0．05），而p16表达阳性率则显著低于无浸润和无淋巴结转移者（P〈0．05）。SLeX表达与p16表达呈显著负相关（P〈0．05）。结论SLeX和p16表达与PTC侵袭转移密切相关，联合检测可作为判断PTC预后的参考指标。

Significance of expression of SLeX and p16 in papillary thyroid carcinoma and their relationships

Objective To investigate the correlation of expression of SLeX and p16 gene protein with the potential of invasion and metastasis in papillary thyroid carcinoma(PTC). Methods The expression of SLeX and p16 gene protein in 69 cases of PTC were studied by microwave-labelled strept-avidin biotin immunohistochemical method. Results The positive rates of SLeX and p16 in PTC were 69.6% and 58.0% respectively. The posi-tive rate of SLeX expression in the patients with tumor invasion and lymphatic metastasis was significantly higher than that without tumor invasion and lymphatic metastasis (P<0.05). But the positive rate of p16 expression in the patients with tumor invasion and lymphatic metastasis was significantly lower than that without tumor invasion and lymphatic metastasis (P <0. 05). There was a negative correlation between SLeX and p16 expression in PTC (P <0. 05). Conclusions Expression of SLeX and p16 protein were closely correlated with the invasive and metastasic potential in PTC. SLeX and p16 could be considered as prognostic indications for PTC.