血管内皮生长因子与nm23-H_1基因在青年女性乳腺癌组织中的表达及其与预后之间的关系

Expressions of vascular endothelial growth factor and nm23-H_1 gene and their relation to the prognosis of breast cancer in young women

目的探讨血管内皮生长因子(VEGF)及nm23-H1基因在青年女性乳腺癌组织中的表达及其与预后间的关系。方法应用免疫组化方法检测48例青年女性、30例绝经后乳腺癌组织及10例乳腺纤维腺瘤组织中VEGF及nm23-H1基因的表达情况,分析他们之间及其与临床病理指标之间的关系,并随访患者5年生存率。结果青年组较绝经组患者淋巴转移率高(P<0.01);青年组与绝经组患者组织中,VEGF及nm23-H1的表达差异皆有显著性意义(P<0.01);青年组、绝经组以及乳腺纤维腺瘤组,两者表达差异也有显著性意义(P<0.01,P<0.01);各组中腋窝淋巴结转移者和未转移者VEGF及nm23-H1的表达差异均有显著性意义(P<0.01);各组中VEGF及nm23-H1的表达与组织分化程度无关(P>0.05);青年乳腺癌组织中VEGF与nm23-H1基因表达成负相关(P<0.01),随访发现:青年乳腺癌患者nm23-H1阳性者5年生存率显著高于p53阳性者生存率(P<0.05)。结论VEGF及nm23-H1基因的表达状况标志着青年乳腺癌恶性侵袭程度,因而二者可作为青年乳腺癌患者极有价值的生物学预后指标。

Objective To investigate the expressions of vascular endothelial growth factor (VEGF) and nm23-H1 gene in breast cancer tissues and their relation to the prognosis in young women. Methods The expressions of VEGF and nm23-H1 gene were detected using immunohistochemical method (SP) in the breast cancer tissues of 48 young and 30 postmenopausal women with breast cancer and in breast fibroadenoma tissues of 10 patients for analysis of the association of the expressions with the patients' clinical and pathological characteristics, with also observation of the 5-year survival rate in each patient group. Results The rates of axillary lymph node metastasis was higher in the young women than in the postmenopausal women, who also had significantly different rates of VEGF and nm23-H1 expressions in the breast cancer tissues (P<0.01, P<0.01 and P<0.05, respectively); between the two breast cancer groups and breast fibroadenoma group, the expressions were also different (P<0.01). In both young and postmenopausal women with breast cancer, patients with axillary lymph node metastasis had significantly higher positivity rate of VEGF expression than those without (P<0.01 and P<0.01), but the reverse was found true in the expression of nm23-H1 gene. VEGF expression was inversely correlated with nm23-H1 expression in young patients (P<0.01), and the 5-year survival rate of patients with nm23-H1 gene expression was higher than that of p53-positive patients (P<0.05). No significant correlation of VEGF and nm23-H1 expressions with the differentiation of the tumor was found (P>0.05). Conclusion The expressions of VEGF and nm23-H1 indicate the angiogenetic activity and invasion of breast cancer, and have a close relation to the prognosis in young women.