老年宫颈癌p53和c-erbB2表达及其临床意义

背景与目的：老年宫颈癌分子生物学方面的研究尚不多见,因此我们将探讨抑癌基因p53和癌基因c-erbB2表达在其发生发展过程中的意义。方法：应用免疫组化LSAB法检测79例老年宫颈癌及23例正常老年宫颈上皮石蜡切片的p53和c-erbB2蛋白阳性率。结果：老年宫颈浸润癌和正常宫颈上皮p53蛋白阳性率分别为18．98％和0（P＜0．01）,而c-erbB2表达率为43．04％和34．78％（P＝0．63）。组织学分级I、Ⅱ、Ⅲ级中p53蛋白阳性率分别为50．00％、11．76％和17．14％（P＝0．01）,c-erbB2表达率分别为80．00％、38．24％及37．14％（P＜0．01）。临床分期I、Ⅱ、Ⅲ／Ⅳ期中p53表达分别为11．11％、15．38％、25．18％（P＝0．26）,c-erbB2蛋白阳性率为33．33％、38．46％和51．61％（P＜0．01）。淋巴结无转移组及转移组p53蛋白阳性率为6．67％、41．67％（P＝0．01）,c-erbB2表达率为26．67％、58．33％（P＝0．08）。结论：p53蛋白在老年宫颈癌发生发展中可能起作用,它可能是预测淋巴结转移的重要指标。c-erbB2基因过度表达可能是老年宫颈癌发生的早期事件。

Expression and clinical significance of p53 and c-erbB2 in geriatric women with cervical carcinoma

BACKGROUND & OBJECTIVE: Few reports have reported on molecular biological study of cervivcal carcinoma in eldely woman, So the authors designed this study to evaluate the expression and clinical significance of tumor suppressor gene p53 and oncogene c-erbB2 in the progression of this kind of cancer. METHODS: Seventy-nine patients with cervical cancer and 23 with cases of normal cervical epithelium in geriatric people were investigated immunohistochemically for expression of p53 and c-erbB2 in paraffin sections. RESULTS: The expression of p53 in ICC (invasive cervical carcinoma) and normal epithelium were 18.98% and 0%, respectively (P < 0.01), and the rate of c-erbB2 oncoprotein were 43.04% and 34.78%, respectively (P = 0.63). p53 staining in ICC with grade 1, 2, and 3 were 50.00%, 11.76%, and 17.14%, respectively (P = 0.01), and frequency of c-erbB2 oncoprotein were 80.00%, 38.24%, and 37.14%, respectively (P < 0.01). c-erbB2 staining in patients with stage I, II, and III or more were 33.33%, 38.46%, and 51.61%, respectively (P < 0.01), while p53 overexpression was not associated with clinical stage. Percentage of p53 staining in the groups with negative lymph nodes and positive ones were 6.67% and 41.67%, respectively (P = 0.01). While c-erbB2 expression was not associated with lymph node status. CONCLUSION: The p53 overexpression was an important factor in the process of carcinogenesis of elder women with cervical cancer and a predictive indicator for lymph node status. c-erbB2 gene may be activated in the early stage of pathogenesis of cervical carcinoma in geriatric patients.