大肠癌组织中CD44v6的表达及意义

目的 探讨大肠癌组织中CD44v6的表达,分析其与大肠癌临床病理指标的关系。方法采用高敏感性催化信号放大免疫组化技术,检测78例大肠癌组织、20例癌旁组织和20例正常大肠组织中CD44v6表达水平。结果大肠癌组织中CD44v6阳性表达率为83．3％,癌旁组织中为40％,正常组织中为阴性,两两比较,P〈0．01;CD44v6阳性表达与大肠癌的临床分期、分化程度、淋巴结转移及远处转移和患者预后有关（P〈0．05）。结论CD44v6的表达与大肠癌的侵袭、转移有关,并在大肠癌发生、发展中发挥重要作用。大肠癌组织中CD44v6的表达情况可作为判定其预后的新生物学指标。     

结直肠癌组织中CD44V3,v6蛋白的表达意义

目的研究CD44v3,v6蛋白在结直肠癌组织中的表达及其预后意义.方法应用EnvisionTM免疫组化法,回顾性分析121例结直肠癌石蜡组织CD44v3,v6的表达.患者中位随访时间为67.77mo.结果CD44v3,v6在结直肠癌中的阳性率分别为60.3%和57.9%.CD44v3的阳性表达与患者肿瘤部位,淋巴结转移状况、远处转移与否、临床分期密切相关(P＜0.05,Spearman等级相关检验).CD44v6的阳性表达与患者性别、淋巴结转移状况、远处转移与否、临床分期密切相关(P＜0.05,Spearman等级相关检验).Kaplan-Meier生存曲线,Log-rank检验单因素生存分析结果显示,CD44v3阴性、阳性患者的五年生存率分别为81.25%,60.27%,两者之间存在显著性差异(P=0.035);CD44v6阴性、阳性患者的5 a生存率分别为80.39%,60.00%,两者之间亦存在显著性差异(P=0.0299).Cox模型多因素生存分析结果显示,CD44v3表达是影响结直肠癌预后的独立因素.结论CD44v3,v6蛋白与结直肠癌转移、预后相关,CD44v3是影响结直肠癌预后的独立因素.     

膀胱移行细胞癌组织中CD44v6的表达及意义

采用免疫组化SABC法检测64例膀胱移行细胞癌和癌旁膀胱组织中的CD4v6。结果显示,64例膀胱移行细胞癌组织中CD44v6阳性表达率为56.3%,癌旁膀胱组织中未见CD44v6蛋白表达;CD44v6表达水平与膀胱移行细胞癌组织学分级、临床分期及复发有关。认为CD44v6可作为判断膀胱移行细胞癌的恶性程度和复发的参考依据。     

KAI1和CD44v6在骨肉瘤中的表达及意义

目的探讨KAI1和CD44v6蛋白在骨肉瘤中的表达及其与临床病理特征及预后的关系。方法应用免疫组织化学SP法,检测87例骨肉瘤组织中KAI1和CD44v6蛋白的表达,用Cox风险回归模型评价骨肉瘤患者预后独立因素。结果KAI1蛋白与肿瘤的分化程度、远处转移相关,而CD44v6仅与远处转移相关。骨肉瘤KAI1和CD44v6的表达无相关性。Cox模型分析显示影响骨肉瘤患者预后因素是KAI1表达、远处转移和Enneking外科分期。结论KAI1和CD44v6的异常表达参与了骨肉瘤的转移过程,KAI1表达、远处转移、Enneking外科分期是预测骨肉瘤患者预后的独立因素。     

CD44v3和CD44v6在溃疡性结肠炎与其他类型结肠炎中的表达

目的比较CD44v3和CD44v6在溃疡性结肠炎(UC)与对照组(包括感染性结肠炎、阿米巴痢疾、血吸虫性结肠炎及克罗恩病等其他类型结肠炎)中表达的差异.方法免疫组化SP法检测两组患者结肠粘膜CD44v3和CD44v6的表达.结果 UC组患者CD44v3和CD44v6表达阳性率分别为68.8%和56.3%,与对照组比较有显著性增高(P<0.05).UC组与感染性结肠炎、阿米巴痢疾、血吸虫性结肠炎病及克罗恩病分别比较差异仍有显著性(P<0.05).结论 CD44v3和CD44v6的检测有助于鉴别UC和感染性结肠炎等其他类型结肠炎.     

CD44v3和CD44v6在溃疡性结肠炎鉴别诊断中的作用

溃疡性结肠炎(UC)缺乏特异性的诊断指标，常需排除感染性结肠炎(IC)、阿米巴痢疾、血吸虫性结肠炎及克罗恩病(CD)等疾病。有部分患者通过临床、内镜及活检等检查仍不能确诊，因此需要一个正确进行鉴别诊断的指标。有人报道UC结肠黏膜CD44 v3和CD44 v6表达增强，故我们检测UC、IC、阿米巴痢疾、血吸虫病、CD患者结肠黏膜CD44 v3和CD44 v6的表达，以判断其是否有助于鉴别UC与其他类型结肠炎。     

胃癌组织中MMP-9、CD44v6和VEGF的表达变化及意义

目的观察胃癌组织中基质金属蛋白酶9（MMP-9）、黏附分子CD44拼接变异体v6（CD44v6）和血管内皮生长因子（VEGF）表达变化,并探讨其临床意义。方法采用免疫组化法检测80例胃癌组织及癌旁组织中MMP-9、CD44v6和VEGF。结果胃癌组织中MMP-9、CD44v6和VEGF表达显著高于癌旁组织,且有淋巴结转移者均高于无淋巴结转移者,Ⅲ～Ⅳ期者高于Ⅰ～Ⅱ期（P均〈0.05）;胃癌组织中MMP-9、CD44v6与VEGF的表达呈正相关（r=0.331、0.421,P均〈0.05）。结论胃癌组织中MMP-9、CD44v6、VEGF表达水平明显上调,其表达与胃癌淋巴结转移和临床分期有关;三者在胃癌的发生发展过程中可能起协同作用。     

胃癌组织中COX-2、CD44v6和MMP-9蛋白表达及意义

目的探讨胃癌组织中环氧化酶-2（COX-2）、CD44v6和MMP-9蛋白表达在胃癌发生、发展过程中的作用。方法采用免疫组化Envision法检测104例胃癌患者癌组织中COX-2、CD44v6和MMP-9蛋白表达,并与28份健康胃黏膜组织比较。结果胃癌组织中COX-2、CD44v6、MMP-9蛋白阳性表达率分别为57．7％（60／104）、59．6％（62／104）和63．5％（66／104）,正常胃组织中均呈低表达或不表达,两者有显著性差异（P〈0．001）;三者表达均与肿瘤浸润深度、临床分期及淋巴结转移呈明显正相关（P〈0．05）,而与患者性别、年龄及肿瘤分化程度无明显相关性;COX-2表达与CD44v6和MMP-9表达呈明显正相关。结论COX-2、CD44v6和MMP-9的过表达可促进胃癌的浸润、转移,三者具有正协同作用;COX-2、CD44v6和MMP-9联合检测可用于判断胃癌生物学行为。     

CD15、CD44v6和CD54检测与肝癌复发转移的关系研究

探讨粘附因子CD15、CD44v6和CD54（ICAM-1）在肝细胞癌中的表达及临床意义。利用免疫组织化学染色对51例肝癌手术切除石蜡包埋标本进行CD15、CD44V6、CD54的检测。并结合临床病理指标（Edmondson分级、侵袭转移倾向）进行分析。CD15、CD44v6和CD54在侵袭转移倾向高危组中分别为40%、45%、55%,在低危组中分别为13%、19%、19%;CD15、CD44v6和CD54在HCCⅡ级中分别为10%、20%、20%,在IV级中分别30%、50%、50%。结论：CD15、CD44v6和CD54的异常表达与HCC分期和侵袭转移有关;利用CD15、CD44v6和CD54等预测肝癌的复发转移有可能是一种新的途径。     

胃癌组织α-连环素和CD44v6表达的检测和意义

目的 研究胃癌组织和癌旁正常胃黏膜组织α-连环素和CD44v6的表达，以探讨它们的表达异常与胃癌病人的临床和病理特征的关系。方法采用免疫组化的方法半定量地检测胃癌组织和胃癌的癌旁正常黏膜这两种细胞黏附分子的表达情况并将二者的表达情况和胃癌病人的临床和病理特征进行比较。结果部分胃癌组织中α-连环素表达减少或消失，而在正常黏膜中α-连环素均正常表达。α-连环素的表达异常与胃癌病人的性别、年龄、胃癌的部位无明显相关性（P〉0．05），与胃癌组织的病理分级及远处转移有相关性（P〈0．05）。在正常胃黏膜中CD44v6无表达，而在部分胃癌组织中CD44v6呈阳性表达，二者差异具有显著性（P〈0．005）。CD44v6的表达上调与胃癌病人的性别、年龄、胃癌的部位及病理分级无明显厢关性（P〉0．05），与理处转移呈正相关（P〈0．05）。胃癌组织中α-连环素和CD44v6的表达呈负相关（P〈0．05）。结论胃癌组织中α-连环素和CD44v6有异常表达；胃癌的远处与原转移发肿瘤组织中α-连环素和CD44v6的异常表达有关；α-连环素和CD44v6的异常表达参与了肿瘤的转移过程。     

CD44v17在胃癌组织中的表达及其与临床生物学特性之间的关系

目的 探讨一种新的CD44变异体（CD44v17）在胃癌组织中的表达及其与临床生物学特性之间的关系.方法根据本实验室在MCF-7／Adr中新发现的1种CD44剪切拼接变异体CD44v17设计特异性引物,应用SYBR Green I荧光染料,采用实时PCR法检测87例胃癌组织及相应癌旁组织CD44v17 Mrna的表达,根据标准曲线计算CD44v17mRNA的表达量,分析CD44v17mRNA表达与胃癌临床生物学特性之间的关系.结果胃癌组织CD44v17 Mrna表达明显高于相应癌旁正常组织（P〈0.05）;肿瘤〉5 cm组CD44v17 Mrna表达与肿瘤≤5 cm组表达比较差异无显著性（P〉0.05）;未分化腺癌组表达明显高于乳头状腺癌及管状腺癌组（P〈0.05）,乳头状腺癌组CD44v17 Mrna表达与管状腺癌组比较差异无显著性（P〉0.05）;肿瘤累及浆膜及浆膜外组CD44v17 Mrna表达显著高于侵及黏膜、黏膜下层及肌层组（P〈0.05）,而肿瘤侵及黏膜及黏膜下层组的CD44v17 Mrna表达与侵犯肌层组表达比较差异无显著性（P〉0.05）.淋巴结转移组CD44v17 Mrna表达明显高于淋巴结无转移组（P〈0.05）;有肝脏转移组CD44v17 Mrna表达显著高于无肝脏转移组（P〈0.05）.结论CD44v17 Mrna在胃癌组织中高表达,可能与胃癌的侵袭、转移及预后有关.     

明胶酶、CD44v6在结直肠癌中的表达及意义

目的探讨明胶酶在结直肠癌中的表达及其CD44v6在结直肠癌侵袭转移过程中的关系。方法采用明胶酶谱（gel zymography）和S-P免疫组化对50例结直肠癌癌组织和相应正常组织中的明胶酶、CD44v6进行检测。结果明胶酶在结直肠癌中的表达水平显著高于正常组织（P〈0．05）；明胶酶与结直肠癌的Duke’s分期呈同步的正相关（P〈0．05）；明胶酶在CD44v6强阳性组中表达量升高显著（P〈0．05）。结论明胶酶与结直肠癌的侵袭转移性有着密切的关系，不仅在癌细胞的酶解，而且在癌细胞的黏附、运动过程中有可能发挥着重要作用。     

Expression of human chorionic gonadotropin, CD44v6 and CD44v4/5 in esophageal squamous cell carcinoma

AIM: To study the relationship between the expression of human chorionic gonadotropin (HCG), CD44v6, CD44v4/5 and the infiltration, metastasis of esophageal squamous cell carcinoma. METHODS: By labeled streptavidin-biotin technique, the expressions of HCG, CD44v6, and CD44v4/5 in 42 patients with esophageal squamous cell carcinoma were examined. RESULTS: The positive rate of HCG expression in patients with lymph node metastasis was 85.71% (18/21), higher than that (57.14%, 12/21) in those without lymph node metastasis (P<0.05). The positive rate of CD44v6 expression was 71.43% (15/21) in lymph node metastasis group, and 38.09% (8/21) in non-metastasis group; there was a significant difference between the two groups (P<0.05). The positive rate of CD44v4/5 expression was 76.19% (16/21) in lymph node metastasis group, and 42.86% (9/21) in non-metastasis group; there was also a significant difference between them (P<0.05). From grade Ⅰ to grade Ⅲ in differentiation, the positive rate of HCG expression was 84.62% (11/13), 70.59% (12/17) and 58.33% (7/12), respectively; there was no significant difference among them (P<0.05). The positive rate of CD44v6 expression in grades Ⅰ-Ⅲ of cancer tissues was 76.92% (10/13), 52.94% (9/17), and 33.33% (4/12) respectively; there was no significant difference among them. The positive rate of CD44v4/5 expression in grades Ⅰ-Ⅲ of cancer tissues was 69.23% (9/13), 64.71% (11/17), and 41.67% (5/12) respectively; there was no significant difference among the three groups. There was no correlation between the positive rates of HCG and CD44v6, CD44v4/5 expression. Cancer cells in carcinomatous emboli and those infiltrating into vascular wall strongly expressed HCG, CD44v6, and CD44v4/5. CONCLUSION: Expression of HCG, CD44v6, and CD44v4/5 in esophageal squamous cell carcinoma is related to its infiltration and metastasis. HCG, CD44v6, and CD44v4/5 have different effects on the infiltration and metastasis of esophageal squamous cell carcinoma.     

CD44v6和MMP-9在胎盘原位滋养细胞肿瘤中的表达及相关性

目的探讨CD44v6和基质金属酶-9（MMP-9）在胎盘原位滋养细胞肿瘤（PSTT）中的表达及相关性。方法采用SABC免疫组化法检测30例正常绒毛、15例PSTT的CD44v6和MMP-9表达情况。结果CD44v6在正常胎盘绒毛、良性PSTT、恶性PSTT的阳性表达率分别是3．3％、30．3％、100％,组间比较差异有统计学意义（P〈0．05）;而MMP-9的阳性表达率分别为6．7％、38．5％、100％,组间比较差异有统计学意义（P〈0．05）。结论CD44v6和MMP-9的过表达促进PSTT的浸润转移,二者具有正协同作用,联合检测CD44v6和MMP-9蛋白可作为PSTT的浸润转移及评价预后生物学指标。     

Expression and clinical significance of CD44V5 and CD44V6 in resectable colorectal cancer

Purpose This study was conducted to evaluate the prognostic significance of CD44v5 and CD44v6 in resectable colorectal cancer.Materials and methods Membranous CD44v5 and CD44v6 levels were measured by an immunoenzymatic assay in tumors and surrounding mucosal samples obtained from 105 patients with resectable colorectal carcinomas.Results There were no significant differences of CD44v5 levels between tumors [median: 3.2 (range: 0.9–83.5) ng/mg protein) and surrounding mucosal samples (3 (3–146.2) ng/mg protein]. However, tumor samples showed significantly higher CD44v6 levels [19.5 (2.2–562.9) ng/mg protein] than mucosal samples [5 (5–230) ng/mg protein] (P=0.0001). Patients with higher CD44v5 or CD44v6 content in tumor samples had a considerably shorter relapse-free survival (P<0.05, for both). Patients with a higher CD44v6 content also had a shorter relapse-free and overall survival in the multivariate analysis (P<0.05).Conclusion The results of this study suggest a role of CD44v5 and CD44v6 in colorectal cancer progression. Membranous CD44v levels in primary tumors, measured by immunoenzymatic assay, may contribute to a more precise prognostic estimation in patients with resectable colorectal cancer.Supported by grants from ISCIII Red de Centros de Cancer RTICCC (C03/10) and Obra Social Cajastur     

CD44v6在胃癌胃镜标本和术后标本中的表达及与胃癌生物学行为的关系

目的:研究CD44v6在胃癌胃镜标本和术后标本中的表达,并分析其与胃癌生物学行为的关系.方法:随机选取辽宁医学院附属第二医院普通外科2004-2009年收治的有详细病例资料的胃癌患者50例,应用免疫组织化学方法检测胃镜标本和术后标本胃组织中CD44v6的表达.结果:CD44v6在胃癌胃镜标本、术后标本和转移淋巴结中的表达率分别为60.00%、64.00%、80.77%.显著高于胃良性病变(P＜0.01);CD44v6在肠型胃癌中的表达率显著高于弥漫型胃癌(75.86% vs 47.62%,P＜0.05).胃癌胃镜和术后标本中CD44v6的表达与胃癌浸润深度,TNM分期和淋巴结转移均有关(P＜0.05).CD44v6在胃癌胃镜标本和术后标本中的总体表达率无显著性差异(P＞0.05);相同临床病理参数,CD44v6在胃癌胃镜标本和术后标本中的表达率无显著性差异(P＞0.05).结论:CD44v6可作为术前预测胃癌的发生、病期进展和转移潜能的辅助生物学指标之一.     

维吾尔族和汉族乳腺浸润性导管癌中CD44v5、HER4表达的差异

目的 探讨维吾尔族（维族）和汉族乳腺浸润性导管癌BIDC中可能存在的CD44v5、HER4蛋白表达差异.方法 选择60例汉族和60例维族BIDC病例,采用免疫组化SP法,检测其CD44v5、HER4蛋白表达情况.结果 两个民族BIDC组织中CD44v5蛋白表达无差异性（P＞0.05）;汉族HER4蛋白表达率（60%）高于维族（36.7%）（P＜0.05）.结论 汉族IDC组织中HER4蛋白表达率高于维族,可能与种族背景有关.     

Expression and significance of CD44s, CD44v6, and nm23 mRNA in human cancer

AIM: To investigate the relationship between the expression levels of nm23 mRNA, CD44s, and CD44v6,and oncogenesis, development and metastasis of human gastric adenocarcinoma, colorectal adenocarcinoma,intraductal carcinoma of breast, and lung cancer.METHODS: Using tissue microarray by immuhistochemical (IHC) staining and in situ hybri-dization (ISH), we examined the expression levels of nm23mRNA, CD44s, and CD44v6 in 62 specimens of human gastric adenocarcinoma and 62 specimens of colorectal adenocarcinoma; the expression of CD44s and CD44v6in 120 specimens of intraductal carcinoma of breast and 20 specimens of normal breast tissue; the expression of nm23 mRNA in 72 specimens of human lung cancer and 23 specimens of normal tissue adjacent to cancer.RESULTS: The expression of nm23 mRNA in the tissues of gastric and colorectal adenocarcinoma was not significantly different from that in the normal tissues adjacent to cancer (P＞0.05), and was not associated with the invasion of tumor and the pathology grade of adenocarcinoma (P＞0.05). However, the expression of nm23 mRNA was correlated negatively to the lymph node metastasis of gastric and colorectal adenocarcinoma (r = -0.49, P＜0.01; r = -4.93, P＜0.01). The expression of CD44s in the tissues of gastric and colorectal adenocarcinoma was significantly different from that in the normal tissues adjacent to cancer (P＜0.05;P＜0.01). CD44v6 was expressed in the tissues of gastric and colorectal adenocarcinoma only, the expression of CD44v6 was significantly associated with the lymph node metastasis, invasion and pathological grade of the tumor (r = 0.47, P＜0.01; r = 5.04, P＜0.01). CD44sand CD44v6 were expressed in intraductal carcinoma of breast, the expression of CD44s and CD44v6 was significantly associated with lymph node metastases and invasion (P＜0.01). However, neither of them was expressed in the normal breast tissue. In addition, the expression of CD44v6 was closely related to the degree of cell differentiation of intraductal carcinoma of breast (x2= 5.68, P＜0.05). The expressional level of nm23mRNA was closely related to the degree of cell differentiation (P＜0.05) and lymph node metastasis (P＜0.01), but the expression of nm23 gene was not related to sex, age, and type of histological classification (P＞0.05).CONCLUSION: Patients with overexpression of CD44s and CD44v6 and low expression of nm23 mRNA have a higher lymph node metastatic rate and invasion. In addition, overexpression of CD44v6 is closely related to the degree of cell differentiation. Detection of the three genes is able to provide a reliable index to evaluate the invasion and metastasis of tumor cells.     

CD44 expression in benign and malignant colorectal polyps

PURPOSE: This retrospective study was undertaken to evaluate immunohistochemically the expression of CD44 standard protein and CD44v5 and CD44v6 isoforms in colorectal adenomas and early invasive cancers developing within adenomas as possible markers characterizing colorectal polyps with a more aggressive biologic potential. METHODS: Archival tissues of 81 consecutive locally resected colorectal polyps, comprising 57 colorectal adenomas and 24 carcinomas-in-adenomas, were stained immunohistochemically with the use of commercially available mouse monoclonal antibodies: SFF-2 for CD44 standard protein, VFF-8 for CD44v5, and VFF-7 for CD44v6. RESULTS: Sixtythree percent of the colorectal polyps were positive for CD44 standard protein, 59 percent were positive for CD44v5, and 27 percent were positive for CD44v6. Ninetythree percent of the low-grade adenomas were CD44 standard protein-positive, in contrast to 50 percent of the high-grade adenomas and only 42 percent of the carcinomas-in-adenomas (Kendall's Tau =–0.42;P<0.0001). CD44v6 expression was more frequently found in early invasive cancers (54 percent) than in high-grade adenomas (25 percent) and low-grade adenomas (7 percent). This difference also was statistically significant (Kendall's Tau-b =0.39;P=0.00003). Surprisingly, a downregulation of CD44 standard protein expression was observed in the adenoma tissue adjacent to carcinomas (62 percent) and areas with high-grade atypia (71 percent), compared with low-grade adenomas (93 percent; Kendall's Tau-b =–0.28;P=0.004). CONCLUSIONS: Our data suggest that CD44 standard protein and CD44 isoform v6 expression differs considerably in benign and malignant colorectal polyps. Clinical studies with larger patient groups could clarify the prognostic potential of CD44 further