节点文献

慢性萎缩性胃炎热休克蛋白70表达的研究

The Studies of Expression of Heat Shock Proteins in Chronic Atrophic Gastritis and Precancerous Lesion

【作者】 吴永梅

【导师】 谢会忠;

【作者基本信息】 新疆医科大学 , 内科学, 2009, 硕士

【摘要】 目的:探讨热休克蛋白70(heat shock proteins 70, HSP70)在人胃粘膜组织中的表达。方法:以男性161名,女性109名,共270名为研究对象,120例胃癌(在本研究中均选择的是胃窦腺癌)手术、90例慢性萎缩性胃炎伴高级别上皮内瘤变(Chronic atrophic gastritis and High intraephithelial neoplasia, CAG and H-IN)、60例慢性浅表性胃炎患者,其中胃癌患者术前均未接受放、化疗处理,经胃镜活检或术后大体标本取胃窦粘膜组织,用鼠抗HSP70的一抗、二抗及ABC试盒,工作浓度为1:400,采用免疫组化SABC方法,染色步骤按常规进行,400倍光镜观察细胞质、细胞核内棕黄色颗粒,进行阴性、阳性、中等阳性、强阳性细胞分级,以强阳性和中度阳性为过度表达。结果:1、HSP70在浅表性炎、CAG and H-IN、胃癌组织中的阳性率分别为27%、49%、67%,后二组均与浅表性胃炎组比较(P=0.000;P=0.035);过表达率分别为3%、37%、58%,后二组均与浅表性胃炎组比较(P=0.000;P=0.002),CAG and H-IN与胃窦腺癌组织比较,P>0.05;细胞核阳性过表达率0%、14%、55%,细胞浆阳性过表达率3%、7%、3%,各组细胞核阳性过表达与自身胞浆组比较,胃窦腺癌组与浅表性胃炎组(P=0.000);CAG and H-IN组(P=0.004)。2、HSP70在CAG and H-IN、胃癌组织中的表达情况与浅表性胃炎组比较有显著差异。3、HSP70在CAG and H-IN、胃癌组织中的过表达情况与浅表性胃膜组比较有显著差异;CAG and H-IN与胃窦腺癌组比较无显著差异。4、浅表性胃炎与其余各组之间HSP70过表达情况上差异较大,其余各指标之间差异不大。5、HSP70在各组细胞浆、核中的阳性过表达情况自身比较均有显著差异。结论:HSP70在胃癌和CAG and H-IN中过度表达,可能在其致病过程中起着重要的作用,进一步研究其分子机制将为胃癌的防治提供理论依据。

【Abstract】 Objective:To detere the expression of HSP70 in gastric mucosa. Methods: Immunohistochemical technique, SABC method, was used to exae the expression of HSP70 in gastric carcinoma and gastritis mucosa. Results:HSP7O was detected in 27 % of gastric epithelia,49% of dysplasia,67% of gastric carcinoma. Overexpression of HSP70 Was found in 3% of normal tissue of gastric epithelia,37% of dysplasia,58% of gastric carcinoma,0% of normal tissue of gastric epithelia,14% of dysplasia,55% of gastric carcinoma. Conclusion:The results that HSP7O protein were selectively overexpressed in gastric carcinoma suggested that HSP70 might play a specific role in the pathogenesis of gastric cancer. To clarify the mechanism of HSPs action could help to provide theorical basis for the biological therapy of gastric cancer.

【关键词】 热休克蛋白70癌前病变
【Key words】 heat shock proteins 70gastricprecancerous lesion
节点文献中: 

本文链接的文献网络图示:

本文的引文网络