胃癌组织中VEGF和ILK的表达及意义
2015-09-11牛蕾
牛蕾


[摘要] 目的 探讨胃癌组织中血管内皮生长因子(VEGF)和整合素连接激酶(ILK)的表达及其与临床病理特征的关系。 方法 应用免疫组化SABC法检测48例胃癌组织中VEGF和ILK的表达情况,利用SPSS 19.0统计软件分析VEGF和ILK的差异性及相关性。 结果 VEGF和ILK在胃癌组织中的表达阳性率依次为56.2%(27/48)、37.5%(18/48)。随着肿瘤浸润深度加深及出现淋巴结转移,两者的阳性表达率明显升高(P<0.05);VEGF和ILK在Ⅲ、Ⅳ期胃癌中的阳性表达率明显高于Ⅰ、Ⅱ期(P<0.01),且与患者的性别及年龄无关(P>0.05)。VEGF和ILK在胃癌组织中的表达呈正相关(r=0.379,P<0.05)。 结论 VEGF和ILK的持续递增式表达提示其可能参与了胃癌的生长、侵袭和转移过程。VEGF和ILK在胃癌中的表达存在正相关,ILK可能通过信号转导途径启动VEGF的表达,促进肿瘤早期的血管发生和形成。
[关键词] 胃癌;血管内皮生长因子;整合素连接激酶
[中图分类号] R735.2 [文献标识码] A [文章编号] 1674-4721(2015)07(b)-0047-03
[Abstract] Objective To explore the expressions of vascular endothelial growth factor (VEGF) and integrin-linked kinase (ILK) in gastric cancer tissue and their relationships with clinicopathological features. Methods Expressions of VEGF and ILK from gastric cancer tissue in 48 patients were detected by immunohistochemical strept avidin-biotin complex (SABC).The difference and correlation between VEGF and ILK were analyzed by SPSS 19.0 statistical software. Results The positive expression rates of VEGF and ILK in gastric cancer tissue were 56.2% (27/48) and 37.5% (18/48) respectively.With deepening of depth of tumor invasion and lymphatic metastasis,the positive expression rates in the two indexes were greatly increased (P<0.05).The positive expression rates in gastric cancer tissue at stage Ⅲ and Ⅳ were much higher than those at stage Ⅰand Ⅱ (P<0.01).There was no relationship between positive expression rate and gender or age (P>0.05).Expression of VEGF had a positive correlation with ILK one (r=0.379,P<0.05). Conclusion The continuous incremental expressions of VEGF and ILK indicate that they may participate in the growth,invasion,and metastasis.VEGF has a positive correlation with ILK in the expression in gastric cancer patients.Expression of VEGF is activated by signal transduction pathway in ILK which promotes early angiogenesis and formation in tumor.
[Key words] Gastric cancer;Vascular endothelial growth factor;Integrin-linked kinase
肿瘤组织中血管的生成是肿瘤生长、发生的主要因素,而恶性肿瘤微血管网的早期建立及快速生长是其快速侵袭和发展的原因。血管内皮生长因子(vascular endothelial growth factor,VEGF)是迄今发现的最重要的促血管生成因子[1]。整合素连接激酶(integrin-linked kinase,ILK)可以介导细胞外基质蛋白的信号传递,参与了贴壁细胞的生长、增殖、移行,在肿瘤组织中高表达,抑制其活性能减弱肿瘤的侵袭和血管生成。本文通过研究胃癌中VEGF和ILK的表达,探讨它们在肿瘤的生长过程中对血管的影响及其在肿瘤转移过程中的作用。
1 资料与方法
1.1 一般资料
选取阜新市中心医院2010年3月~2014年3月期间行根治性手术的胃癌病例标本,从中随机选取48例。肿瘤组织标本均经甲醛固定、常规石蜡包埋,HE染色确诊为胃癌病例。全部病例术前均未行放疗及化疗治疗。48例患者中男29例,女19例;年龄39~78岁,平均(59.27±18.21)岁;浆膜内20例,浆膜外28例;有淋巴结转移34例。根据国际抗癌联盟(UICC)关于胃癌TNM分期方法[2]进行临床分期:Ⅰ期10例,Ⅱ期14例,Ⅲ期21例,Ⅳ期3例。……
