老年大肠癌患者外周血CD44v5、CD44v6表达及其对化疗的影响

目的分析老年大肠癌患者外周血CD44v5、CD44v6表达及其对化疗的影响。方法选择62例老年大肠癌患者为观察组,50例非老年大肠癌患者为对照组,另选同期体检的38例健康老年人为正常组,均采用流式细胞仪对其外周血CD44v5、CD44v6表达水平进行检测与比较,并分析观察组化疗前后CD44v5、CD44v6表达水平变化。结果观察组与对照组CD44v5、CD44v6差异无统计学意义(P0. 05);观察组CD44v5、CD44v6显著高于正常组(P0. 05);CD44v5、CD44v6表达水平与患者肿瘤大小、浸润深度、临床分期及淋巴结转移情况相关(P0. 05);观察组化疗后CD44v5、CD44v6水平较化疗前明显降低,但仍高于正常组,差异有统计学意义(P0. 05)。结论 CD44v5、CD44v6表达与老年大肠癌患者细胞血行转移密切相关,检测其水平可为临床判定该病发生、预后提供参考;化疗具有肿瘤转移、抗黏附作用,有利于降低外周血黏附分子表达水平。     

黏附分子与老年人胃癌血行转移的关系

目的　研究黏附分子与老年人胃癌血行转移的关系及化疗对其影响。方法　应用流式细胞仪检测 56例老年胃癌患者手术前外周血CD44变异体 (CD44v5、CD44v6)表达水平 ,与健康老年人及非老年胃癌患者进行对照 ,并在应用化疗后观察黏附分子表达水平的变化。结果　老年胃癌组外周血CD44v5、CD44v6的表达水平分别为 1 6 73± 7 45、1 1 62± 5 1 2 ,明显高于健康对照组 (P <0 0 1 )。老年胃癌组肿瘤≥ 5cm、肿瘤浸润深度≥深肌层及淋巴结转移阳性患者外周血CD44v5、CD44v6的表达水平明显高于肿瘤 <5cm、肿瘤浸润深度 <深肌层及淋巴结转移阴性患者 (P<0 0 1 ,P <0 0 5 ,P <0 0 1 )。老年胃癌患者化疗后外周血CD44v5、CD44v6表达水平较化疗前明显下降 (P <0 0 1 )。结论　黏附分子具有介导老年人胃癌细胞血行转移的作用 ,化疗可降低老年胃癌患者外周血CD44v5、CD44v6的表达水平 ,具有抗黏附和肿瘤转移作用     

新辅助化疗后大肠癌患者癌组织中CD44v6、p27的表达及意义

目的探讨新辅助化疗后大肠癌患者癌组织中CD44v6、p27的表达及意义。方法免疫组化法测定42例未化疔（对照组）及44例新辅助化疗后（观察组）大肠癌患者癌组织、癌旁组织和正常组织中CD44v6、p27的表达。结果两组癌组织中p27的表达低于癌旁和正常组织（P〈0．05）。p27表达与肿瘤分化程度密切相关（P〈0．05）。观察组癌组织中p27表达明显高于对照组（P〈0．05）。两组癌组织中CD44v6表达高于癌旁和正常组织（P〈0．05）。CD44v6异常表达与浸润深度、淋巴结转移、远处转移、Duke’s分期密切相关（P〈0．01）。观察组中CD44v6表达显著低于对照组（P〈0.05）。结论新辅助化疗能有效降低大肠癌细胞的侵袭与转移,检测CD44v6和p27蛋白表达水平有助于判断病变性质、复发转移潜能、评估患者预后及术后治疗方案的合理选择。     

黏附分子CD44在大肠癌中表达的临床意义

采用免疫组化法检测121例大肠癌患者肿瘤组织的CD44v6蛋白表达。结果在大肠癌中CD44v6表达阳性率为50．4％（61／121），其中低分化者阳性率高于高分化者，淋巴结转移者高于无淋巴结转移者，Dukes分期D期者高于A期者（P〈0．05，〈0．01）。提示CD44v6表达阳性的大肠癌具有更强的浸润及淋巴结转移能力，CD44v6可作为判断大肠癌预后的一个重要指标。     

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。     

CD44s和CD44v6在肺癌组织中的表达及意义

采用免疫组化法检测107例肺癌组织中标准型CD44（CD44s）和变异型CD44（CD44v）6的表达,结果，17例小细胞肺癌（SCLC）中，CD44v6和CD44s均无表达;非小细胞肺癌（NSCLC）中，CD44v6和CD44s在鳞癌中的阳性表达率（81．0％和83．3％）均高于腺癌（39．6％和54．2％），P均〈0．05;无淋巴结转移的NSCLC中，CD44v6阳性表达率（34．0％）低于CD44s（78．0％）。P〈0．05；有淋巴结转移的NSCLC中．CD44v6阳性表达率（90．0％）高于CD44s（55．0％），P〈0．05。NSCLC的CD44v6和CD44s表达与其病理类型、临床分期、肿瘤分级及淋巴结转移均有关（P均〈0．05）。认为CD44v6和CD44s可以作为鉴别SCLC与NSCLC及判断肺癌病理类型、临床分期、肿瘤分级及淋巴结转移的参考指标。     

大肠癌CD15,CD44v6和nm23H1的mRNA表达与转移及预后的相关性

目的 探讨CD15,CD44v6和nm23H1的mRNA表达与大肠癌临床病理参数和预后的关系及相关性.方法 应用原位杂交检测90例大肠癌中CD15,CD44v6和nm23H1的mRNA表达及20例原发灶和转移灶大肠癌配对标本中CD15 mRNA表达,并结合53例5 a以上随访资料分析.结果 90例大肠癌中CD15,CD44v6和nm23H1的mRNA阳性表达分别为76例(84.4%),62例(68.9%)和60例(66.7%).CD15和CD44v6的mRNA高表达及nm23H1 mRNA低表达与大肠癌Duke's分期、浆膜浸润、淋巴结转移、肝脏转移均呈正相关.大肠癌中CD15 mRNA表达与CD44v6 mRNA表达呈正相关,与nm23H1 mRNA表达呈负相关.20例原发灶和转移灶大肠癌配对标本中,CD15 mRNA表达水平一致.结论 大肠癌的侵袭转移与相关基因协同作用密切相关.在大肠癌的侵袭转移中cDl5,CD44v6和nm23H1的mRNA表达具有正、负调节的协同作用可能.CD15 mRNA可作为一个新的准确预测大肠癌侵袭转移潜能,并客观评估患者预后的生物学指标.     

胃癌中CD15s抗原和CD44v6基因蛋白的表达及其意义

[目的 ]探讨唾液酸化的路易斯寡糖 X(CD15s)抗原和CD4 4v6基因蛋白表达与胃癌临床病理指标和患者预后的关系。 [方法 ]应用高敏感性的催化信号放大免疫组化技术 ,对早期胃癌 17例、中期胃癌 2 1例和晚期胃癌5 7例组织进行CD15s抗原和CD4 4v6蛋白检测 ,并结合肿瘤的病理学指标和临床随访资料进行分析。 [结果 ]在胃癌中 ,CD15s和CD4 4v6的表达阳性率分别为 86 .3%和 82 .1%。且晚期胃癌明显高于早、中期胃癌 (P <0 .0 5 )。CD15s和CD4 4v6表达水平具有一致性 ,均与胃癌浆膜浸润、淋巴结转移和患者预后呈正相关 (P <0 .0 5 )。 [结论 ]CD15s和CD4 4v6表达与胃癌转移和患者生存期密切相关 ,检测CD15s和CD4 4v6的表达可作为判断胃癌预后的参考指标。     

乳腺癌转移患者CD44v6变化及意义

采用免疫组化法检测乳腺癌患者原发灶及转移灶中黏附分子CD44v6、增殖细胞核抗原（PCNA）及雌激素受体（ER）的表达情况。结果显示，原发灶CD44v6及PCNA表达阳性细胞数及平均灰度均高于转移灶（P〈0．05）；转移灶中，CD44v6与PCNA表达呈正相关（r=0．54，P〈0．05）。提示CD44v6表达与乳腺癌转移有关，是判定其预后的有价值指标。     

胃癌患者血清和癌组织中CD44v6检测的临床意义

采用酶联免疫吸附试验（ELISA）对胃癌患者手术前后和健康正常人血清可溶性CD44v6（sCD44v6）含量进行检测。并以免疫组化SP法测定癌组织和正常胃黏膜中CD44v6蛋白的表达。结果显示胃癌患者血清sCD44v6含量明显高于正常人，胃癌组织中CD44v6蛋白阳性表达率明显高于正常胃黏膜组织；胃癌患者血清sCD44v6含量和癌组织中CD44v6的表达与肿瘤大小、浸润深度、淋巴结转移和TNM分期密切相关。因此认为CD44v6的检测在胃癌的辅助诊断、手术疗效和浸润转移程度的判断以及预后评估等方面具有重要价值。     

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.     

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.     

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.     

Expression of CD44 variant isoforms CD44v3 and CD44v6 is increased on T cells from patients with systemic lupus erythematosus and is correlated with disease activity

Objective

To quantify the expression of CD44 and variant isoforms CD44v3 and CD44v6 on T cells from patients with systemic lupus erythematosus (SLE), and to assess correlations of the level of expression of these molecules with disease manifestations.

Methods

Information on clinical and demographic characteristics was collected, and blood samples were obtained from 72 patients with SLE and 32 healthy control subjects matched to the patients by sex, race, and age. Expression of CD44 and variants CD44v3 and v6 on T cell subsets was determined by flow cytometry, and Pearson's correlations of their expression levels with clinical variables, SLE Disease Activity Index (SLEDAI) scores, and presence of lupus nephritis were determined. Wilcoxon's rank sum tests and conditional multivariable regression analyses were applied to identify differences in the expression of CD44 between patients with SLE and healthy controls.

Results

Expression of CD44 was higher on CD4+ and CD8+ T cells from SLE patients compared with controls (P ≤ 0.03). Expression of CD44v3 and CD44v6 was also higher on total T cells and CD4+ and CD8+ T cells from SLE patients compared with controls (P ≤ 0.03). Cell surface levels of CD44v3 on total T cells, CD4+ T cells, and CD8+ T cells as well as cell surface expression of CD44v6 on total T cells and CD4+ T cells were correlated with the SLEDAI score (P < 0.05). The presence of lupus nephritis was associated with the expression of CD44v6 on total T cells, CD4+ T cells, and CD4−CD8− T cells (P < 0.05). Positivity for anti–double‐stranded DNA antibodies was associated with the expression levels of CD44v6 on T cells (P < 0.05).

Conclusion

These results indicate that expression levels of CD44v3 and CD44v6 on T cells may represent useful biomarkers of SLE activity.

     

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 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.