乙酰肝素酶在乳腺癌组织中的表达与肿瘤血管形成及预后的关系  

Correlation of Expression of Heparanase to Angiogenesis and Prognosis of Breast Cancer

作　　者：刘真真[1] 张恒伟[1] 魏冰[2] 崔树德[1] 

机构地区：[1]河南省肿瘤医院乳腺科,河南郑州450008 [2]河南省肿瘤医院病理科,河南郑州450008

出　　处：《癌症》2004年第11期1342-1345,共4页Chinese Journal of Cancer

摘　　要：背景与目的:乙酰肝素酶是一类裂解硫酸乙酰肝素的糖苷内切酶,通过降解肿瘤细胞胞外基质及基底膜和促进新生血管形成加速肿瘤扩散和转移。本研究探讨乳腺癌组织中乙酰肝素酶表达与血管生成及预后的关系。方法:采用免疫组化方法,分别应用乙酰肝素酶抗体及CD34单克隆抗体检测120例浸润性乳腺癌组织中乙酰肝素酶的表达和微血管密度(microvesseldensity,MVD),并与患者年龄、肿瘤大小、组织学分级、腋淋巴结转移、临床分期及5年生存率进行相关分析。统计学分析采用χ2检验和t检验、Kaplan-Meier及log-rank检验。结果:①乳腺癌组织中乙酰肝素酶的阳性率为65%,与正常乳腺组织中的阳性率有显著性差异(P<0.05);乳腺癌组织中MVD值为53.84±13.45,显著高于正常对照组(33.32±8.55)(P<0.01)。②乙酰肝素酶的表达与乳腺癌肿瘤大小、组织学分级及腋淋巴结转移率、临床分期、5年生存率密切相关(P<0.05)。③乙酰肝素酶的表达与乳腺癌血管生成有关,乙酰肝素酶高表达组MVD值大于低表达组(P<0.05),两者呈显著正相关(r=0.358,P<0.05)。结论:乙酰肝素酶与乳腺癌血管形成及预后关系密切。BACKGROUND &OBJECTIVE: Heparanase is a heparan sulfate proteoglycan cleaving enzyme. It helps to degrade extracellular matrix and basement membrane, promote angiogenesis, and accelerate tumor metastasis. This study was to investigate correlation of heparanase expression to angiogenesis and prognosis of breast cancer. METHODS: Immunohistochemistry was used to detect heparanase and microvessel density (MVD) in 120 specimens of infiltrative ductal breast cancer, and 10 specimens of normal breast tissue. Correlation of heparanase expression to clinicopathologic factors and prognosis of breast cancer were analyzed using Chi square test, t test, Kaplan Meier method, and log rank test. RESULTS: Positive rate of heparanase in breast cancer was 65%(78/120), significantly higher than that in normal breast tissue (0, 0/10) (P< 0.05). MVD in breast cancer was 53.84±13.45, significantly higher than that in control group (33.32±8.55) (P< 0.01). Expression of heparanase positively correlated with tumor size, histological grade, lymph node metastasis, and clinical stage (P< 0.05) of breast cancer, and negatively correlated with 5 year survival rate (P< 0.05). MVD in heparanase positive group was much higher than that in heparanase negative group (P< 0.05), MVD positively correlated with heparanase expression (r=0.358,P< 0.01). CONCLUSION: Heparanase may promote angiogenesis, and may closely correlate with prognosis of breast cancer.

关 键 词：乳腺肿瘤 免疫组化 乙酰肝素酶 微血管密度 预后 

分 类 号：R737.9[医药卫生—肿瘤]