CD44s和CD44v6的mRNA在胃癌中的表达及其临床意义

目的　探讨CD4 4smRNA和CD4 4v6mRNA在胃癌中的表达及其临床意义。方法　应用巢式RT PCR检测 16例远隔癌灶部位“正常”胃黏膜及 5 8例胃癌新鲜组织中CD4 4smRNA和CD4 4v6mRNA表达水平。结果　CD4 4smRNA在胃癌组织和远隔癌灶部位“正常”胃黏膜中的表达无差异 ,和胃癌的各临床病理学指标无关 (P >0 .0 5 )。CD4 4v6mRNA在胃癌组织中的表达高于远隔癌灶部位“正常”胃黏膜 (P <0 .0 5 ) ,与Borrmann分型 (P <0 .0 5 )、脉管侵犯 (P <0 .0 1)、浆膜浸润 (P <0 .0 1)和淋巴结转移 (P <0 .0 1)有关。结论　CD4 4smRNA和胃癌的发生发展无关 ,CD4 4v6与胃癌的浸润及转移相关。     

胃癌中CA242和CD44v6蛋白的表达及其与临床病理的相关性研究

 目的　探讨CA242和CD44v6蛋白在胃癌中的表达及意义。方法　应用免疫组织化学技术检测120例胃癌、30例异型增生和20例正常胃黏膜组织中CA242和CD44v6蛋白表达,并结合肿瘤的病理学行为和临床随访资料分析。结果　在胃癌组织中,CA242和CD44v6阳性率分别为79.2 %和81.7 %,均显著高于异型增生和正常胃黏膜组织（P＜0.05）。CA242和CD44v6表达与胃癌浆膜浸润、淋巴结转移和患者预后密切相关（P＜0.05）。结论　CA242和CD44v6表达与胃癌发生、转移和患者生存期有关,检测CA242和CD44v6蛋白表达可作为预测胃癌患者预后的参考指标。     

胃癌中CD44v6和PTEN表达及意义

[目的]探讨CD44v6和PTEN蛋白在胃癌中的表达及意义。[方法]采用免疫组织化学方法检测73例胃癌组织和25例正常胃黏膜组织中CD44v6和PTEN蛋白表达,并分析其与临床病理特征间的意义。[结果]73例胃癌组织中CD44v6阳性表达率为71.2%,显著高于正常胃黏膜组织的20.0%（χ2=20.09,P〈0.01）;PTEN蛋白表达阳性率为30.1%,显著低于正常胃黏膜组织的100.0%（χ2=36.42,P〈0.01）;CD44v6高表达和PTEN蛋白低表达与胃癌的分化程度、浸润深度及淋巴结转移密切相关（P〈0.05）,胃癌组织中CD44v6与PTEN蛋白表达呈负相关（χ2=14.06,P〈0.01）。[结论]胃癌组织中CD44v6的高表达与PTEN蛋白的低表达与胃癌的发生、发展、浸润转移密切相关,联合检测CD44v6和PTEN蛋白表达可评估胃癌侵袭转移能力,对胃癌的预后判断具有一定的临床意义。     

胃癌中CA242和CD44v6蛋白的表达及其与临床病理的相关性

目的探讨CA242和CD44v6蛋白在胃癌中的表达及其意义。方法应用免疫组织化学技术检测120例胃癌、30例异型增生和20例正常胃黏膜组织中CA242和CD44v6蛋白表达,结合肿瘤的病理学行为和临床随访资料进行分析。结果在胃癌组织中,CA242和CD44v6阳性率分别为79．2％（95／120）和81．7％（98／120）,均显著高于异型增生和正常胃黏膜组织（P〈0．05）。CA242和CD44v6表达与胃癌浆膜浸润、淋巴结转移和患者预后密切相关（P〈0．05）。结论CA242和CD44v6表达与胃癌发生、转移和患者生存期相关,CA242和CD44v6蛋白表达可作为预测胃癌患者预后的参考指标。     

CD44v6在宫颈癌中的表达及其意义

目的：探讨CD44v6在宫颈癌中的表达及意义。方法：采用免疫组化SP法，检测135例宫颈癌中CD44v6蛋白的表达情况，分析CD44v6与临床病理因素的关系。结果：CD44v6表达与宫颈癌临床分期，组织学类型无关（P＞0．05）。有淋巴结转移组和有脉管瘤栓组中的CD44v6阳性表达明显高于无淋巴结转移组和无脉管瘤栓组（P＜0．05）；且化越差，其阳性表达率越高。结论：CD44v6在宫颈癌的分化、浸润及转移过程中起着重要的作用，对早期预测肿瘤侵袭和评估预后是一种良好指标。     

CD44v6表达与胃癌临床病理因素及预后的关系

目的：研究CD44v6在胃癌组织中的表达，评估其在胃癌预后中的地位。方法：采用免疫组织化学EnVision^TM法，检测42例远隔癌灶部位“正常”胃粘膜和188例手术切除的胃癌组织中CD44v6的表达，并分析其与临床、病理特征的关系及对预后的影响。结果：CD44v6在胃癌组织中的阳性率为67．6％，明显高于远隔癌灶部位“正常”胃粘膜的表达（9.5%)（P＜0．01），并与淋巴结转移有关（P＜0．05）。Kaplan-Meier生存分析结果表明CD44v6表达与总生存率和无瘤生存率均显著相关（P＜0．01），多因素分析结果表明脉管侵犯、TNM分期和CD44v6表达是影响胃癌患者生存率的独立预后因素（P＜0．05）。结论：CD44v6在胃癌组织中具有较高的表达，有可能成为判断胃癌预后的有用指标。     

CD44v6在胃癌中的表达

[目的]研究胃癌CD44v6的表达及意义。[方法]应用免疫组织化学ABC法 ,研究85例胃癌手术标本中CD44v6的表达。[结果]胃癌原发灶中CD44v6表达阳性率为61 2%(52/85)。CD44v6表达阳性率在进展期胃癌(66 7%)、累及浆膜层胃癌(72 2%)、淋巴结阳性胃癌(73 2%)均高于早期胃癌(30 8%)、未累及浆膜层胃癌(41 9%)、淋巴结阴性胃癌(37 9%)(P<0 05或P<0 01)。[结论]CD44v6可能参与胃癌的浸润和淋巴结转移过程。检测胃癌CD44v6的表达 ,有助于对胃癌生物学行为的了解及对患者预后的判断     

P-gp和CD44v6在胃癌组织中表达及与预后的关系

目的 探讨P-gp和CD44v6在胃癌组织中表达的相关性及其临床意义。方法 应用免疫组织化学方法,检测97例胃癌组织中P-gp及CD44v6的表达,并分析P-gp和CD44v6与胃癌病理特征的关系、两者表达的相互关系及对预后的影响。结果 97例胃癌组织中P-gp和CD44v6的阳性率分别为40.21%(39/97)和58.76%(57/97),P-gp阳性表达情况与胃癌的临床分期、有无淋巴结转移及有无血管侵犯有关(P<0.05)。CD44v6阳性表达与病变大小、临床分期、有无淋巴结转移及有无血管侵犯有关(P<0.05)。P-gp阳性表达与CD44v6阳性表达具有正相关性(P<0.05),两者表达均阳性者3年生存率低于两者表达均阴性组。结论 P-gp和CD44v6的表达不仅与胃癌的生物学行为有关,同时两者的表达具有明显的正相关性,而且两者表达均阳性者预后差,提示联合检测两者有助于判断胃癌的预后。     

Tiam1,CD44v6和Ecadherin表达与胃癌组织病理生物学行为的关系

目的探讨Tiam1、CD44v6和Ecadherin在胃癌组织中的表达及其与病理生物学行为的关系。方法应用RT-PCR和免疫组化SP法对56例胃癌和15例正常胃黏膜组织进行Tiam1、CD44v6和Ecadherin蛋白检测。结果与正常胃黏膜组织相比,Tiam1、CD44v6在胃癌组织中高表达（P=0.000,P=0.018）,Ecadherin在胃癌组织中低表达（P=0.001）;Tiam1、CD44v6、Ecadherin在胃癌组织中的表达与组织分化程度密切相关（P=0.022,P=0.016,P=0.018）;Spearman等级相关分析显示,Tiam1与CD44v6的表达呈正相关（γs=0.576,P〈0.01）,Tiam1与Ecadherin的表达呈负相关（γs=-0.428,P〈0.01）。结论Tiam1、CD44v6和Ecadherin的表达与胃癌的发生、发展和分化程度密切相关。     

胃癌中RhoC和CD44v6的表达及其临床意义

背景与目的:探讨Ras相似蛋白C(Ras homologue C,RhoC)和CD44剪接变异体v6(CD44 splice variant V6,CD44v6)在胃癌中的表达及其与临床病理因素之间的关系.材料与方法:采用免疫组化SP法检测97例胃癌组织中RhoC和CD44v6的表达情况.结果:97例胃癌组织中RhoC和CD44v6阳性率分别为77.31%(75/97)、83.50%(81/97),两者表达存在相关性(P＜0.05).RhoC和CD44v6表达均与胃癌的浸润深度和肿瘤分期有关(P＜0.05),且淋巴结转移组RhoC表达显著高于无淋巴结转移组(P＜0.05).结论:RhoC和CD44v6蛋白的过量表达是胃癌的发生发展中的频发事件,可以作为判断预后的指标之一.     

Soluble CD44 v5 and v6 in serum of patients with breast cancer. Correlation with expression of CD44 v5 and v6 variants in primary tumors and location of distant metastasis

Primary breast cancers were shown to overexpress CD44 v5 and v6 at the plasma membrane. However, the clinical significance of this overexpression remains unclear. Overexpression of CD44 v5 and v6 in primary breast cancers was found to correlate with metastasis and poor prognosis by some investigators, yet this correlation could not be confirmed by others using different antibodies. In this study the influence of metastatic disease, the site of metastasis, and the amount of CD44 v5 and v6 expression in the primary tumor on serum levels of the soluble forms of CD44 v5 and v6 (sCD44 v5 and v6) in breast cancer patients was investigated. Soluble CD44 v5 and v6 serum levels were measured by enzyme linked immuno sorbent assay in a group of breast cancer patients who developed metastases in various organs and in another group of patients with single organ metastasis. For control, sCD44 v5 and v6 levels were measured in breast cancer patients who remained free of metastasis and in healthy blood donors. Expression of plasma membrane bound CD44 v5 and v6 in the primary tumors of the patients with metastasis in various organs was correlated to sCD44 v5 and v6 levels in serum. Furthermore the size of sCD44 v6 was analyzed by immunoblot using a monoclonal antibody directed against CD44 v6. When metastases were detected, sCD44 v5 and v6 serum levels were increased as compared to levels measured one month after tumor surgery in patients free of metastases (p = 0.0025 and p = 0.0004). Six of 19 and 6 of 20 patients had sCD44 v5 and v6 serum levels above a cut-off level of 85 and 275 ng/mL, respectively. In these cases expression of CD44 v5 and v6 in the primary cancers was also elevated. Low sCD44 v5 and v6 serum levels were associated with weak expression of CD44 v5 and v6 in the respective primary cancers. As shown by statistical analysis of sCD44 v5 and v6 levels in 57 patients with single organ metastases, elevated sCD44 v6 levels but not sCD44 v5 levels were associated with metastases in liver or bone (p = 0.0025). Immunoblot analysis of soluble CD44 proteins in serum revealed two CD44 v6 specific signals of approximately 120 and 170 kDa. Increased sCD44 v5 and v6 serum levels in patients with breast cancer were influenced by the amount of CD44 v5 and v6 expression in the primary tumor by the site of metastasis. Elevated sCD44 v6 serum levels were preferentially found in patients with metastases in liver or bone.     

胃癌患者不同组织CD44v5+细胞表达率的比较

 目的　探讨胃癌患者不同组织CD4 4v5的表达规律。方法　采用流式细胞术对于 39例胃癌患者的癌灶、癌旁组织、淋巴结转移灶和外周血细胞的CD4 4v5表达率进行了检测和对比分析。结果　胃癌患者不同组织的CD4 4v5 +细胞检出率均显著高于正常对照组 (P <0 .0 5或P <0 .0 1)。胃癌患者各种组织CD4 4v5 +细胞表达率大小顺序为癌灶 >癌旁组织 >淋巴结转移灶 >外周血细胞 ,前三者和外周血细胞之间有显著性差异 (P <0 .0 5或P <0 .0 1) ,而前三者之间却无显著性差异 (P >0 .0 5 )。在胃癌患者的各种组织中 ,伴肿瘤转移患者的CD4 4v5 +细胞检出率均显著高于未转移者 (P <0 .0 5或P <0 .0 1)。结论　胃癌患者身体各种组织的CD4 4v5 +细胞表达率显著升高 ,且CD4 4v5 +细胞表达率与肿瘤转移密切相关。     

血清CD44v6表达在结直肠癌中的临床应用价值

目的 探讨血清可溶性细胞表面黏附分子sCD44v6在结、直肠癌中的临床应用价值.方法 96例不同Duke分期结、直肠癌患者和24例健康者,分别采用酶联免疫吸附法(ELISA)定量检测其血清sCD44v浓度,化学发光免疫法检测血清CEA浓度;并结合临床资料进行分析.结果 结、直肠癌患者sCD44v6浓度为275.3±115.8 ng/ml,明显高于健康对照组(61.3±7.8 ng/ml)(P＜0.05),若以健康对照组的(-x)+2s(76.9 ng/ml)作为正常上限值,其阳性率为73.96%;sCD44v6水平随癌肿Duke分期的升级和肿瘤细胞的转移而呈现递增趋势,各组之间比较差异有统计学意义(P＜0.05).与CEA相比,sCD44v6水平在反映癌组织浸润和转移程度上更直接、敏感.结论 结、直肠癌患者sCD44v6水平和阳性率均显著增高,并与肿瘤的分期和扩散转移程度密切相关;术前sCD44v6水平检测可作为结、直肠癌患者病程和转移预测的一个重要指标.     

Expression of CD44v6 in advanced gastric cancer and its relationship to hematogenous metastasis and long-term prognosis

BACKGROUND AND OBJECTIVES: Variants of CD44 have been proposed to be important in promoting tumor progression and metastasis. We attempted to determine the expression of CD44v6 product in advanced gastric cancer and to evaluate its prognostic value. METHODS: The expression of CD44v6 was analyzed immunohistochemically in advanced gastric cancers using monoclonal antibody, 44-2V. We investigated the relationship between CD44v6 expression and prognosis in 201 gastric cancer patients. RESULTS: Ninety-five (47.3%) of 201 cancer tissues expressed CD44v6. The expression of CD44v6 protein was significantly higher in differentiated, adenocarcinoma than in diffuse type carcinoma. The CD44v6-positive cancers were more frequently associated with hematogenous metastasis. There was no significant correlation between CD44v6 immunoreactivity, and prognosis among the combined cases. Among patients with differentiated adenocarcinoma, however, the prognosis was significantly poorer in patients with CD44v6-positive tumors than in those with CD44v6-negative tumors. CONCLUSIONS: CD44v6 protein may have an important role in hematogenous metastasis, and may be a biologic marker of prognostic significance in differentiated type gastric cancers.     

CD44v6在胃癌中的表达及其与幽门螺杆菌感染的关系

背景与目的:目前认为CD44v6在胃癌组织中有较高的表达率,并公认幽门螺杆菌(Helicobactor pylori,HP)感染为Ⅰ类胃癌致癌原,但迄今未见CD44v6与HP关系的文献报道。本文旨在探讨CD44v6在胃癌中的表达及其与HP感染的关系。方法:选取胃癌组织56例、癌旁非癌组织56例、非典型增生胃粘膜32例。CD44v6检测采用RT-PCR与Southern blot法;HP检测采用快速尿酶法与Warthin-Starry银染色;同时用ELISA测定56例胃癌患者血清中HP cagA抗体。结 果:胃粘膜HP阳性组中,转移性胃癌和非转移胃癌的CD44v6表达率分别达100％(12/12)和90.5％(19/21),明显高于癌旁非癌胃组织的48.6％(24/35)与非典型增生胃粘膜的23.6％(6/23);转移性胃癌与非转移胃癌的CD44v6表达率比较无显著差异(P>0.25),非典型增生胃粘膜与胃癌、癌旁非癌胃组织比较有非常显著性差异(P<0.005)。胃粘膜HP阴性组:在转移性胃癌、非转移胃癌、癌旁非癌组织和非典型增生CD44v6表达率分别是66.7％,51.4％,38.1％和18.1％,各组比较均无显著性差异。CD44v6表达与HP感染有密切关系(P<0.01)。肠型胃癌CD44v6表达与HP感染高于弥漫型胃癌(P>0.05)。胃癌患者血清HP cagA抗体阳性率高于胃癌组织HP感染率(P>0.05)。结论:CD44v6在胃癌中有较高的阳性率,与HP感染密切相关,可作为     

乳腺癌患者血清中sCD44v6检测的临床意义

目的：探讨乳腺癌患者血清中可溶性CD44v6（sCD44v6）蛋白的含量及其临床意义。方法：采用酶联免疫吸附实验（ELISA）检测48例乳腺癌患者手术前后及10例健康对照组血清中sCD44v6蛋白的含量。结果：48例乳腺癌患者血清中sCD44v6蛋白的含量为（546.45±63.79）ng/ml,显著高于健康对照组（167.32±50.06ng/ml,P〈0.01。乳腺癌患者行根治性手术后sCD44 v6蛋白的含量明显下降,有统计学意义,P〈0.05。并与淋巴结转移、组织学分级、TNM分期及低龄（≤35岁）密切相关。结论：sCD44v6水平可作为诊断、治疗乳腺癌及预测乳腺癌患者转移复发风险及预后的辅助指标。     

Soluble CD44 variant 6 as a prognostic indicator in patients with colorectal cancer

The expression of CD44v6 is well known as a useful marker of tumor progression and prognosis in colorectal cancer. In this study, we evaluated the serum levels of soluble CD44 splice variants containing exon v6 (sCD44v6) and examined the histological expression of CD44v6 in patients with colorectal cancer. Serum samples were obtained from 44 primary colorectal cancer patients before surgery. We used enzyme-linked immunosorbent assay to determine the serum levels of sCD44v6. The expression of CD44v6 was examined by immunohistochemical staining of the primary tumors obtained from the same patients. Both the serum concentration of sCD44v6 and the expression of CD44v6 were significantly associated with lymph node metastasis (p < 0.05). Furthermore, the serum level of sCD44v6 was higher in those patients with CD44v6-positive tumor tissues (154.4 +/- 34.8 ng/ml) than in those with CD44v6-negative ones (130.7 +/- 32.3 ng/ml; p < 0.05). The 5-year survival rate was significantly lower in patients with high serum levels of sCD44v6 (52.4%) than in those with low levels of sCD44v6 (78.0%; p < 0.05), and it was also significantly lower in patients with CD44v6-positive cancer (42.1%) than in those with CD44v6-negative cancer (84%; p < 0. 01). We concluded that preoperative elevation in the serum levels of sCD44v6 might be a prognostic indicator for patients with colorectal cancer.