AIB1蛋白在卵巢癌组织中的表达及其临床意义

Expression and its clinical significance of AIB1 protein in the tissues of ovarian carcinoma

目的 研究乳腺癌扩增基因1（AIB1）蛋白在卵巢癌组织中的表达情况及其与临床病理特征之间的关系,并分析其对患者临床预后的预测价值.方法 采用免疫组织化学法检测112例卵巢癌组织中AIB1蛋白的表达情况,并比较不同临床病理特征之间AIB1蛋白表达的差异.通过Kaplan-Meier法进行生存分析,多因素分析探讨AIB1的表达与患者临床预后的关系.结果 卵巢癌组织中AIB1蛋白阳性表达率为67.9％（76/112）.AIB1蛋白的表达与组织学分级（x2=32.483,P＜0.001）和国际妇产科联盟（FIGO）分期（x2=14.324,P＜0.001）相关,与患者的年龄（x2=0.001,P=0.989）和病理类型（x2=0.106,P=0.745）无关.AIB1低表达患者较高表达患者表现出更长的中位无瘤生存期（48.7个月∶36.7个月,x2=3.026,P=0.022）,其中位总生存期亦有延长的趋势（60.2个月∶43.6个月,x2 =0.916,P=0.055）.多因素生存分析显示,FIGO分期（RR=3.396,P=0.021）和AIB1表达状态（RR=1.407,P=0.049）是影响患者生存的独立预后因素.结论 AIB1蛋白的过表达与患者组织学分级及FIGO分期相关,高表达AIB1预示患者更差的临床预后,AIB1可作为卵巢癌患者预后的预测指标之一.

Objective To study the expression of amplified in breast cancer 1 （AIB1） protein in the tissues of ovarian carcinoma and its relationship with clinicopathological factors,and to analyze the predictive value of AIB1 in clinical prognosis of patients with ovarian carcinoma.Methods Immunohistochemistry was used to detect the expression of AIB1 protein in the tissues of 112 patients with ovarian carcinoma,and compare the AIB1 protein expression levels of patients with various clinicopathological features.The survival analysis was conducted by Kaplan-Meier method.The multivariate analysis was performed to explore the relationship between the expression of AIB1 protein and clinical prognosis of the patients with ovarian carcinoma.Results The positive expression rate of AIB1 protein in the tissues of ovarian carcinoma was 67.9% （76/112）.The positive expression rate of AIB1 protein was associated with the degree of the tumor differentiation （x2 =32.483,P 〈0.001） and the International Federation of Gynecology and Obstetrics （FIGO） staging （x2 =14.324,P 〈0.001）,but not with the age （x2 =0.001,P =0.989） or pathological type （x2 =0.106,P =0.745）.Compared with the patients with the higher expression of AIB1,the median disease-free survival of patients with the lower expression of AIB1 was longer （48.7 months vs.36.7 months,x2 =3.026,P =0.022）,and there was also extended trend in the median overall survival （60.2 months vs.43.6 months,x2 =0.916,P =0.055）.The multivariate survival analysis showed that FIGO staging （RR =3.396,P =0.021） and AIB1 expression status （RR =1.407,P =0.049） were independent prognostic factors affecting the survival of patients.Conclusion The overexpression of AIB1 protein is correlated with the degree of differentiation and FIGO staging.Patients with a high expression of AIB1 have poor predicted prognosis.The expression of AIB1 protein can be considered as one of the prognostic indicators in the patients with ovarian carcinoma.