Ezrin在骨肉瘤中的表达及临床意义

目的探讨人体骨肉瘤组织中的Ezrin mRNA和蛋白的表达及其与骨肉瘤临床病理特征的关系。方法收集42例骨肉瘤和15例良性骨肿瘤标本,应用免疫组织化学技术检测Ezrin的蛋白表达,应用RT-PCR检测Ezrin mRNA的表达情况,并与临床病理特征进行相关性分析。结果 Ezrin蛋白及mRNA在骨肉瘤中的阳性表达显著高于其在良性骨肿瘤中的阳性表达（P〈0.05）;Ezrin mRNA表达的阳性率和骨肉瘤分化程度密切相关,而与患者性别、年龄及肿瘤部位无关。结论 Ezrin可能参与了骨肉瘤的发生、发展和转移,Ezrin的表达情况可作为评估骨肉瘤生物学行为的一项指标。     

Ezrin和CD44v6在胃癌中的表达及其临床意义

目的 探讨胃癌组织中Ezrin和CD44v6的表达及其临床病理意义.方法 应用免疫组织化学(SP法)检测73例胃腺癌患者组织标本、15例胃不典型增生组织及12例癌旁胃黏膜组织中Ezrin和CD44v6的表达情况.结果 (1)Ezrin 在正常胃黏膜组、胃不典型增生组和胃癌组中的阳性表达率分别为41.7%、53.3%和83.6%.CD44v6在正常胃黏膜组、胃不典型增生组和胃癌组中的阳性表达率分别为25%、40%和82.2%.(2)Ezrin和CD44v6的表达与淋巴结转移密切相关,有淋巴结转移组Ezrin与CD44v6的阳性率均明显高于无淋巴结转移组(P<0.05);在Ezrin和CD44v6同时表达组中,淋巴结转移率为63%(34/54例)高于两者均为阴性组(1/6例,16.7%)(P＜0.05).结论 联合检测Ezrin和CD44v6的表达有助于预测胃癌的恶性程度和转移潜能.     

食管鳞癌中VEGF-C与CD44v6的表达及其与淋巴结转移的关系

目的研究食管鳞癌组织中血管内皮细胞生长因子-C(VEGF-C)与CD44v6的表达及其与淋巴结转移的关系。方法应用免疫组织化学方法对152例食管鳞癌组织进行VEGF-C与CD44v6蛋白检测结果VEGF-C与CD44v6蛋白在食管鳞癌的阳性表达为55.3%和71.7%,VEGF-C与CD44v6的表达与食管癌有无转移有显著差异(P<0.05)。结论VEGF-C与CD44v6与食管鳞癌淋巴结转移密切相关,可作为判断食管鳞癌预后的指标。     

胃癌中CD44s和CD44v6的表达及意义

目的 研究CD44s和CD44v6的表达与胃癌发生及临床病理学相关性.方法 利用各种类型的胃癌56例、非典型增生18例及正常胃黏膜组织22例,通过免疫组化ABC法检测CD44s和CD44v6的表达.结果 在胃癌、非典型增生及正常胃黏膜中CD44s蛋白的阳性表达率分别为80.4%、72.2%和13.6%;CD44v6蛋白的阳性表达率分别为83.9%、77.8%和4.6%.胃癌及非典型增生中CD44s和CD44v6蛋白的表达与正常胃黏膜相比均差异有显著性(P<0.01).CD44s和CD44v6蛋白在进展期胃癌中浸润到肌层时强阳性表达率分别为60.7%和57.1%;浸润到浆膜层的胃癌中强阳性表达率分别为82.4%和88.2%,与早期胃癌的强阳性率18.2%和9.1%相比均具差异有显著性(P<0.05,P<0.01).有淋巴结转移的胃癌中CD44s蛋白的强阳性表达率为90.5%,CD44v6蛋白的强阳性表达率为85.7%,与无淋巴结转移的胃癌中强阳性表达率为40.0%相比均差异有显著性(P<0.01).结论 CD44s和CD44v6蛋白的高表达与胃癌的发生有密切相关,CD44s和CD44v6蛋白与癌组织浸润深度及淋巴结转移有关,可做为胃癌的早期诊断及预后断定的重要指标之一.     

非小细胞肺癌中Ezrin和CD44v6的表达及意义

目的 探讨非小细胞肺癌中Ezrin和CD44v6的表达及其与肺癌各种临床病理参数之间的关系.方法 采用免疫组化SP法检测55例非小细胞肺癌组织中Ezrin及CD44v6的表达.结果 Ezrin的表达程度与非小细胞肺癌的TNM分期(P=0.004)和淋巴结转移(P=0.003)密切相关; CD44v6的表达程度与非小细胞肺癌的TNM分期(P=0.012)和淋巴结转移(P=0.010)密切相关;Ezrin 和CD44v6两者在非小细胞肺癌组织中的表达呈正相关(r=0.568, P=0.000).结论 Ezrin和CD44v6与肺癌淋巴结转移和临床TNM分期密切相关,联合检测Ezrin和CD44v6有助于判断肺癌的预后.     

CD44v6和Bcl-2蛋白在甲状腺癌中的表达及相关性研究

目的:探讨甲状腺癌组织中CD44v6和Bcl-2蛋白的表达与肿瘤发生和转移的关系,并探讨CL44v6和Bcl-2表达的相关性。方法:应用催化信号放大系统免疫组化技术,检测50例甲状腺癌、45例甲状腺腺瘤和20例癌旁正常甲状腺组织中CD44v6和Bcl-2蛋白表达。结果:在甲状腺癌CD44v6和Bcl-2表达阳性率分别为64.0％和46.0％,均显著高于甲状腺腺瘤和癌旁正常甲状腺组织（P<0.05）,CD44v6和Bcl-2阳性率均与甲状腺癌淋巴结转移相关（P<0.05）。CD44v6和Bcl-2表达呈正相关。结论:CD44v6和Bcl-2表达对预测甲状腺癌转移和评估预后是一种重要参考指标。     

CD15 mRNA在原发性肝细胞癌中的表达及其预后意义

目的：研究CD15mRNA表达与原发性肝细胞癌（HCC）侵袭转移和预后关系及与CD44v6和nm23H1的mRNA表达相关性。方法：应用原位杂交和免疫组织化学方法，检测分析HCC组织中CD15mRNA及其蛋白、CD44v6及nm23H的mRNA表达。结果：99例HCC中，CD15mRNA及其 蛋白、CD44和nm23H1的mRNA表达阳性率分别为38．4％、36．7％、41．4％和76．8％。CD15mRNA表达与其 蛋白表达一致，与CD44v6 mRNA表达呈正相关，与nm23H1 mRNA表达呈负相关。CD15mRNA及其蛋白、CD44和nm23H1的mRNA表达均与HCC侵袭转移倾向和患者预后相关。结论：检测CD15表达有可能成为HCC侵袭转移和预后判断的一项新的病理生物学指标。     

CD44v6和E-cadherin表达与结直肠癌浸润转移关系

目的　探讨CD44v6和E cadherin(E cad)蛋白表达与结直肠癌浸润转移的相关性。方法　应用免疫组织化学技术 ,检测 90例结直肠癌组织中CD44v6和E cad蛋白表达。结果　 90例结直肠癌中CD44v6和E cad蛋白阳性表达率分别为75 6 %和 46 7%。CD44v6高表达及E cad低表达与结直肠癌Dukes分期、浆膜浸润、淋巴结转移、肝脏转移均呈正相关 (P <0 0 5 )。结直肠癌中CD44v6表达与E cad表达呈负相关 (r =- 0 4 3,P <0 0 0 5 )。结论　CD44v6和E cad表达与结直肠癌浸润转移密切相关。检测CD44v6和E cad蛋白表达可作为判断结直肠癌预后的客观指标。     

胃肠道间质瘤中Ezrin过表达的临床病理学意义

目的应用组织芯片技术检测Ezrin在胃肠道间质瘤(gastrointe stinals tromal tumors,GIST)中的过表达情况,并分析其临床病理学意义。方法采用免疫组化及原位杂交法检测组织芯片中42例GIST组织Ezrin蛋白和mRNA的过表达情况,并进行数据统计分析。结果在42例GIST组织中,21例有Ezrin蛋白的过表达(50%),16例有Ezrin mRNA的过表达(38%);Ezrin蛋白和mRNA在发生于非胃部位的GIST及出现浸润转移的患者中过表达更明显(P0.05);此外Ezrin蛋白的过表达在肿瘤大小分组及恶性潜能分级、临床分期中有差异,差异有统计学意义(P0.05);Ezrin蛋白和mRNA表达呈正相关(r=0.392,P0.05)。结论 Ezrin可能参与了GIST的浸润转移过程,并可能成为预测GIST转移的重要指标;免疫组化检测Ezrin蛋白的过表达可以作为评估GIST恶性潜能及肿瘤进展的指标。     

胃良恶性病变组织中CD24和CD44v6的表达及其意义

目的： 研究胃良恶性病变组织中癌干细胞标记物CD24、CD44v6的表达并探讨其临床病理意义。方法: 49例胃癌、20例癌旁组织、36例淋巴结转移灶及80例不同类型胃良性病例（浅表性胃炎10例，萎缩性胃炎15例，胃溃疡20例，胃息肉20例，胃腺瘤15例）标本常规制作石蜡包埋切片，CD24和CD44v6染色方法为EnVision免疫组化法。结果: 胃癌病例CD24和CD44v6表达阳性率明显高于癌旁组织和不同类型胃良性病变（P＜0.05或P＜0.01），且阳性表达的良性病例胃黏膜上皮均呈中至重度不典型增生；转移灶CD24和CD44v6表达与相应原发灶呈现高度一致性（P>0.05）；组织学分级Ⅱ级、无淋巴结转移及无远处器官转移胃癌病例CD24和CD44v6表达阳性率明显低于组织学分级Ⅲ或Ⅳ级、淋巴结转移及远处器官转移病例（P＜0.05）。此外，浸润深度T₁-T₂及淋巴结N1站转移病例CD24表达阳性率明显低于浸润深度T₃-T₄和淋巴结N₂、N₃站转移病例（P＜0.05）。结论: CD24和CD44v6表达可能是反映胃癌发生、进展、生物学行为和预后的重要癌干细胞标记物，检测胃良性病例CD24和CD44v6表达水平对预防和早期发现胃癌可能有一定的临床价值。     

The expression of CD44v6 in colon: from normal to malignant

CD44v6, an integral transmembrane protein belonging to a family of adhesion molecule receptors, plays an important role in tumor growth, progression and metastasis. The purpose of this study was to evaluate the expression of CD44v6 in normal, hyperplastic, adenomatous, and malignant colonic epithelium and to determine its correlation with tumor pathologic stage and lymph node metastasis. We examined the immunohistochemical expression of CD44v6 in normal colonic tissue (n = 25), hyperplastic polyps (n = 45), tubular adenomas (n = 57), tubulovillous adenomas (n = 25), villous adenomas (n = 9), adenocarcinomas stage I (n = 26), adenocarcinomas stage III (n = 26), and lymph node metastasis (n = 26). The percentage of positive cells and the staining intensity were assessed and scored. Statistical analysis was performed using logistic regression and McNemar test. All normal colonic tissue and hyperplastic polyps showed CD44v6 staining confined to the base of the crypt. In tubular adenomas, the dysplastic surface adenomatous epithelium expressed CD44v6 in 49 (86%) cases. CD44v6 was expressed in the glandular areas of tubulovillous adenomas in 21 (84%) cases and in the villous portion in 18 (72%) cases. All villous adenomas expressed CD44v6. CD44v6 was expressed in 23 (88%) cases of stage I adenocarcinomas, in 24 (92%) cases of stage III adenocarcinomas, and in 9 (35%) cases of metastatic adenocarcinomas. We concluded that the gain of CD44v6 expression in premalignant and malignant colonic lesions suggests that CD44v6 may be functionally involved in the adenoma-to-carcinoma progression. CD44v6 did not correlate to tumor pathologic stage and is lost during the acquisition of migratory function by metastatic tumor cells.     

大肠癌CD44v6、p53基因突变体的表达

探明CD44v6 与肿瘤转移的关系, 了解p53 基因突变、CD44v6 在大肠癌中的表达。应用银染PCR SSCP检测p53 基因的突变; 应用特异CD44v6 探针进行Southern blot 杂交, 对杂交条带进行X光片暴光, 并对X 光片上的杂交条带进行灰度扫描, 定性、定量分析CD44v6 的表达。结果显示, 正常对照组、腺瘤组、未转移组和转移组的p53 基因突变率分别为:0 % 、50-0 % 、35-3% 和55-6% 。四个实验组的CD44v6 表达阳性率分别为0 % 、25-0% 、64-7 % 和88-9% ; CD44v6 表达量分别为175-87 ±43-16 、2017-31 ±1429-9、2039-88±1568-78 和10004-47±8013-36 , 转移组CD44v6 表达量明显高于其它实验组。CD44v6 与转移有关; 在肿瘤转移组和未转移组, CD44v6 阳性率明显高于p53 基因突变率。与p53 基因相比,CD44v6 不失是一个肿瘤转移的良好标记     

上皮型钙黏附蛋白、CD44v6及连接蛋白43在肝细胞癌中的表达及意义

目的研究上皮型钙黏附蛋白（E-cad）、CD44v6和连接蛋白43（Cx43）在人肝细胞癌（HCC）中的表达及其表达与患者性别、年龄和组织学分级的关系。方法采用免疫荧光双标记染色技术结合激光扫描共聚焦显微镜观察E—cad、CD44v6及Cx43在30例正常肝组织,25例肝良性病变和38例HCC中的表达;另在HCC组检测并分析了该3种标记物的表达与性别、年龄和组织学分级的关系。结果E—cad与Cx43均在正常肝组织及肝良性病变组高表达,而在HCC组表达都明显降低,前两组与HCC组问表达强度差异均有统计学意义（FE-cad=879．2,F Cx43=303．7,P〈0．05）。相反,CD44v6在正常肝组织及肝良性病变组表达较低,而在HCC中表达较高,差异有统计学意义（F=2057．2,P〈0．05）。HCC组E—cad和Cx43阳性表达强度在患者不同性别、年龄及肿瘤的组织学分级问的差异均无统计学意义（P〉0．05）;而CD44v6表达与HCC的组织学分级有关,HCC分化差,CD44v6表达高（t=-2．06,P〈0．05）,但不同年龄、性别组HCC的CD44v6阳性表达强度差异无统计学意义（P〉0．05）。HCC组E—cad与Cx43的表达呈正相关,而E—cad、Cx43与CD44v6的表达呈负相关。结论HCC的发生、发展伴随着多种分子表型的改变。E—cad、Cx43的低表达与CD44v6的高表达可能参与HCC的侵袭,尤其是CD44v6的表达还与HCC的组织学分级相关。三者联合检测对判断HCC的诊断和预后有一定价值。     

Differential expression of CD44v6 in metastases of intestinal and diffuse types of gastric carcinoma.

AIMS: To assess whether standard and variant isoforms of CD44 (CD44s, CD44v5, and CD44v6) have a differential expression profile in early versus advanced gastric adenocarcinoma of the diffuse and intestinal types and their metastases. METHODS: Immunohistochemical expression of CD44s, CD44v5, and CD44v6 was evaluated in 14 early gastric cancers (nine intestinal and five diffuse) and 37 advanced adenocarcinomas (21 intestinal and 16 diffuse) as well as in 18 cases of perigastric lymph node metastasis. Ten normal and five metaplastic gastric mucosa samples were also included in the study. RESULTS: Although no significant association was found between the degree of invasion and the CD44 expression profile, CD44v6 positivity was detected more frequently in metastases of intestinal-type carcinomas (66%) than in metastases of diffuse-type neoplasms (11%) (p < 0.05). Weak CD44s, CD44v5, and CD44v6 expression was observed focally in both normal and metaplastic gastric mucosa samples. CONCLUSIONS: These data suggest that CD44v6 expression may be involved in the production of lymph node metastases in intestinal-type gastric carcinoma but not in the diffuse-type disease, the metastatic potential of which is most likely unrelated to the CD44 family of adhesion molecules.     

Galectin-3和CD44v6在甲状腺癌中的表达及临床价值

为观察Galectin-3和CD44v6在甲状腺良、恶性结节中的表达差异,探讨其在甲状腺癌鉴别诊断中的临床价值,应用免疫组化方法检测30份甲状腺癌组织、38份甲状腺良性结节及29份正常甲状腺组织中Galectin-3和CD44v6的表达。结果显示,甲状腺癌组织中Galectin-3和CD44v6的阳性率均显著高于良性结节和正常甲状腺组织（P〈0．005）,其中乳头状癌和滤泡状腺癌的阳性率显著高于其它类型癌组织（P〈0．005）。结论：Galectin-3和CD44v6可以作为甲状腺癌鉴别诊断的较有价值的标志物。     

Diagnostic utility of CD44 standard, CD44v6, and CD44v3-10 expression in adenocarcinomas presenting in serous fluids.

CD44 is an 85 to 90 kd integral transmembrane protein encoded by a single 20-exon gene located on the short arm of chromosome 11. In the standard form (CD44s), 10 of the 20 exons are transcribed. Multiple variant isoforms exist (CD44v1-10) which arise from alternate mRNA splicing of the remaining 10 exons. In contrast to the standard form of CD44, which is almost ubiquitously expressed, splice variants are highly restricted in their expression in normal or malignant tissues. The purpose of this study was to evaluate the extent to which metastatic adenocarcinomas in effusions express CD44s, CD44v6, and CD44v3-10 and to assess their diagnostic utility in distinguishing reactive mesothelial cells from adenocarcinomas. Archival paraffin-embedded cell blocks of serous fluids from 23 cases of benign effusions containing reactive mesothelial cells and 45 cases of malignant effusions with metastatic adenocarcinoma (18 ovarian, 11 pulmonary, 9 gastrointestinal, and 7 breast) were retrieved from the surgical pathology files. The cytopathology of all cases was reviewed to confirm the diagnosis. Immunohistochemistry was performed on all cases using antibodies for CD44s, CD44v6, and CD44v3-10 (Bender MedSystems, CA). Positive staining was defined as distinct linear membrane staining. Strong staining in at least 10% of the tumor cells was required to consider the case positive for the particular marker. In benign effusions mesothelial cells expressed CD44s in 22 cases (96%), CD44v6 in 1 cases (4%) and CD44v3-10 in 0 cases (0%). In contrast neoplastic cells in malignant effusions expressed CD44s in 11 cases (24%), CD44v6 in 21 cases (47%), and CD44v3-10 in 39 cases (87%). We concluded that CD44s and CD44v3-10 are useful markers that can be applied to cytologic specimens. CD44s immunostaining can be used as a reliable marker to identify reactive mesothelial cells, meanwhile CD44v3-10 immunostaining can detect majority of adenocarcinomas in malignant effusions.     

CD44s和CD44v6在宫颈鳞癌中表达及其临床意义

目的：探讨宫颈鳞癌中CD44s和CD44v6的表达及其与临床病理资料的关系。方法：应用免疫组化EnVision两步法对31例宫颈鳞标本中CD44s和CD44v6蛋白表达并进行分析。结果：肿瘤原发灶中CD44s阳性表达率为61．3％（19／31）。CD44v6阳性表达率为93．5％（29／31）,CD44v6阳性率高于CD44s,CD44s阳性表达与临床分期,病理分级和分类无关（P＞0．05）,CD44v6阳性表达与肿瘤细胞分化程度无关,但与浸润程度及分期有关（P＜0．05）,结论：CD44v6基因蛋白与宫颈鳞癌的侵袭,转移相关,可作为预测肿瘤进展和预后的一种有用指标。     

CD44v6与MMP—9在口腔鳞癌中的表达意义

目的：探讨细胞粘附分子CD44v6和基质金属蛋白酶MMP－9相互关系及其在评估口腔鳞癌的组织学分级,肿瘤浸润以及转移等生物学特性中的意义。方法：运用免疫组化S－P法测定22例口腔鳞癌和6例正常口腔黏膜组织中CD44v6和MMP－9的表达,结果：CD44v6在正常口腔黏膜组织呈强阳性表达;癌组织中CDv6的表达明显弱于正常组织,高表达CD44v6的口腔鳞癌不仅分化程度较差而且易发生淋巴结转移,MMP－9在正常口腔黏膜组织中呈阴性或弱阳性表达,癌组织中MMP－9的阳性表达高达68．2％（15／22）。MMP－9的表达与病理分级和颈淋巴结转移呈正相关（P＜0．05）,口腔鳞癌中MMP－9与CD44v6的表达呈正相关（P＜0．01）,多因素分析示两者之间的交互作用是影响口腔鳞癌病理分化和颈淋巴结转移的最重要因素。结论：口腔鳞癌中CD44v6与MMP－9的表达密切相关。MMP－9和CD44v6可作为临床上评估口腔鳞癌浸润,转移以及预后的指标。