肝细胞生长因子受体原癌基因c-Met mRNA在鼻咽癌中的表达及意义

Objective： To explore the expression of c-Met mRNA in nasopharyngeal carcinomas （NPC） and its relation with clinical biological behavior. Methods： In situ hybridisation was used to detect mRNA expression of c-Met in 15 cases of non-tumor nasopharyngeal （NP）, 55 cases of NPC. Results： The positive rates of c-Met mRNA in NP and NPC cells were 13.3% （2/15） and 61.8% （34/55） respectively. The expression of c-Met mRNA was significantly correlated with lymph node metastasis, local invasion （skull base erosion）, and clinical stage. In cases with cervical lymph node metastasis, local invasion, and clinical stage III and IV （UICC）, the positive rates of expression of c-Met mRNA were significantly higher than that in those without the conditions mentioned above （P 〈 0.05 or P 〈 0.01）. But it was not significantly correlated with age, gender, histologic grade, and cranial nerve palsy （P 〉 0.05）. Conclusion： The abnormal expression of c-Met gene was well correlated with the biological behavior of metastasis and invasion. To detection the expression of c-Met mRNA could serve as an important index to estimate the prognosis of NPC. C-Met may be a new diagnostic/therapeutic target of NPC.     

血管内皮生长因子、环氧合酶-2在甲状腺乳头状癌中的表达及其意义

Objective To study the expression and clinical significance of VEGF and COX-2 in papillary thyroid carcinoma (PTC).Methods The expression of VEGF and COX-2 were investigated by immuonhistochemical S-P method in 78 cases of papillary thyroid carcinoma tissue and adjacent tissue.78 cases of PTC including 42 cases with intrathyroidal invasion, 36 cases with extrathyroidal invasion,and 38 cases with lymph node metastasis and 40 cases without lymph node metastasis.Adjacent tissues including 34 cases of nodular goiter(NG),25 cases of Hashimoto thyroiditis(HT)and 19 cases of normal tissue.Results There was a significant difference between thyroid cancer tissue and the tumor free tissue(P＜0.05)and the expression levels of VEGF and COX-2 increased from the tumor free tissue,adjacent tissue to the thyroid cancer tissue(P＜0.05).The expression of VEGF and COX-2 were not related with site of tumor(P＞0.05),but were correlated to the degree of the infiltration and lymph node metastasis in PTC.Expression of COX-2 was correlated positively with VEGF.Conclusion The high expression of VEGF and COX-2 in PTC relates to the development,progression and metastasis of PTC,which may serve as one of the parameters for diagnosis of PTC and determing biological behavior and prognosis of PTC.     

环氧合酶-2和基质金属蛋白酶-9在宫颈癌中的表达及其临床意义

Objective： To investigate the expressions of cyclooxygenase （COX）-2 and matrix metalloproteinase （MMP）-9 in cervical carcinoma and their clinical significance. Methods： Immunohistochemistry SP method was used to detect the expressions of COX-2 and MMP-9 in 72 cases of invasive carcinoma of cervix （ICC） and 16 cases of normal cervical epithelium remote from tumor （NCE）. The relationships between the expressions of COX-2, MMP-9 in ICC and some characteristics relating to clinical pathology of cervical carcinoma such as histological grading, lymph node metastasis, stromal invasion and FIGO stage were analyzed statistically. Results： The rates of the positive expressions of COX-2 and MMP-9 in ICC were significantly higher than those in NCE. COX-2： 88.9% （64/72）in group ICC and 12.5% （2/16）in group NCE, P = 0.000; MMP-9： 94.4% （68/72） in group ICC and 43.8% （7/16） in group NCE, P = 0.000. The expression of COX-2 was positively correlated with lymph node metastasis （r= 0.296, P = 0.012） and stromal invasion （r = 0.257, P = 0.029）. The expression of MMP-9 was positively correlated with FIGO stage （r = 0.329, P = 0.005） and histological grading （r = 0.351, P = 0.003）. The expression of COX-2 was positively correlated with the expression of MMP-9 in ICC （r=0.297, P = 0.011）. Conclusion： The overexpressions of COX-2 and MMP-9 were closely related to the invasion and growth of cervical carcinoma. The tissue with the overexpression of COX-2 had strong invasion ability. COX-2 and MMP-9 had synergistic effect on proliferation, invasion and metastasis of cancer cells. Detecting the coexpression of COX-2 and MMP-9 may be of value in further understanding the biological behavior and predicting the prognosis of cervical carcinoma.     

环氧化酶2和血管内皮生长因子在透明细胞性肾细胞癌中的表达及其与血管生成的关系

Objective To investigate the expression of COX-2 and VEGF in clear cell renal cell carcinoma(CCRCC)and their correlation with tumor angiogenesis.Methods Envision immunohistochemistry was used to determine the expression of COX-2 and VEGF,and microvessel density(MVD)was marked by CD34 in 80 CCRCC tissues and 20 normal kidney tissues.The relationship between the above mentioned markers were analyzed.Results Expressions of COX-2 and VEGF were noted in both CCRCC and normal kidney tissues.The positive rates of COX-2 and VEGF were significantly higher in CCRCC than in normal kidney(P ＜0.05);The expression of COX-2 was correlated with TNM stage(P ＜0.05),histological grade (P ＜0.05)and lymph node metastasis(P ＜0.05)in CCRCC,but not with age(P = 0.663)and diameter of tumor(P =0.528).Both COX-2 expression(r = 0.851,P ＜ 0.01)and VEGF expression(r = 0.736,P ＜ 0.01)were significantly associated with MVD in CCRCC.There was a positive correlation between expression of cox-2 and that of VEGF in CCRCC.Conclusion COX-2 expression is correlated with tumor angiogenesis in CCRCC.It is likely that VEGF is one of the most important mediators in the COX-2 angiogenic pathway.     

Vascular Endothelial Growth Factor Expression in Invasive Ductal Carcinoma of Breast

Objective： To detect the expression of VEGF and MVD count in invasive ductal carcinoma of breast to clarify the association of VEGF expression and MVD count with the clinicopathologic features. Methods： The expressions of VEGF, ER, PR, C-erbB-2 and MVD count in 88 cases of invasive ductal carcinoma of breast were examined by immunohistochemistry staining （SP-method）. Results： Sixty-two out of the eighty-eight specimens of breast carcinoma （70.45%） showed positive expression of VEGF. The positive rate of VEGF in cases with lymph node metastasis was higher than that without lymph node metastasis （P〈0.05）. The positive rate of VEGF in stage IIb-Ⅲ was higher than that in stage Ⅰ-Ⅱa （P〈0.05）. The positive rate of VEGF in C-erbB-2 positive group was higher than that in C-erbB-2 negative group （P〈0.05）. Higher expression of VEGF was observed in cases with higher tissue differentiation degree （P〈0.05）. Also, significant higher MVD count was observed in cases with higher tissue differentiation degree （P〈0.01）. The MVD count increased significantly with the increase of the expression of VEGF （P〈0.01）. Conclusion： The result of this study suggested that in invasive ductal carcinoma of breast, angiogenesis and metastasis were mediated mainly by VEGF. The expression of VEGF and MVD might be reference predictors for the biological behavior of breast carcinoma. The antiangiogenic therapy which used VEGF as a target would become a new method to treat patients who were C-erbB-2 positive in the future.     

鼻咽癌组织中EGFR和nm23基因表达与预后关系研究

Objective To evaluate the prognostic value of the expression of epidermal growth factor receptor (EGFR) and nm23 in patients with nasopharyngeal carcinoma (NPC). Methods From 2003 to 2006, 127 NPC patients who had undergone biopsy before radiotherapy were reviewed retrospectively. All patients received intensity-modulated radiotherapy using 6 MV X-rays combined with platinum-based chemotherapy. Immunohistochemistry SP method was adopted to detect the expression of EGFR and nm23 in NPC biopsy specimens . The relationship between the expression of EGFR and nm23 and survival was analyzed. Results The positive rate of EGFR and nm23 were 80.3% and 47. 2% respectively. The nm23expression was correlated with distant metastasis (χ2=7.03, P = 0. 008 ). The 5-year estimated local control, over-all survival (OS) and disease-free survival (DFS) were 58.3% ,53.5% and 46. 5%. Patients with negative expression of EGFR had a significantly better 5-year OS, DFS (χ2=8.23, P=0.004;χ2=5.25,P=0.022) than those with positive expression. Patients with positive expression of nm23 had a significantly higher 5-year OS (χ2=15.68, P = 0. 000) and DFS (χ2=14. 85, P = 0. 000) than those with negative expression. The clinical stage, EGFR and nm23 expression were independent prognostic factors shown by Cox proportional hazard model (χ2=23.03, 18.33, 39.92, P= 0.000, 0.000, 0.000).Conclusions The EFGR and nm23 expression were correlated with the prognosis in NPC patients.     

Analysis of p53 and vascular endothelial growth factor and its receptor Flk-1 expression in human gallbladder carcinoma for determination of tumor vascularity

Objective： More and more studies have demonstrated that the p53 tumor suppressor gene plays an important role in controlling tumor angiogenesis. There is some evidence that p53 mutations cause overexpression of vascular endothelial growth factor （VEGF）, a major inducer of angiogenesis. In addition, there is now growing evidence that several malignancies express receptors for VEGF, especially receptor-2 （Flk-1/KDR）, raising the possibility that the VEGF/VEGF receptor axis may serve as an autocrine pathway in some tumors. We examined the expression of p53 and VEGF and its receptor FlK-1, together with microvessel count （MVC） to investigate the role of VEGF as an angiogenic marker, the presence of VEGF/Flk-1 axis, and the possible role of p53 in the regulation of angiogenesis in human gallbladder carcinoma. Methods： Surgically resected specimens of 49 gallbladder carcinomas were studied by immunohistochemical staining for p53 protein, VEGF, Flk-1 and factor VIII-related antigen. VEGF expression and mutant p53 expression were then correlated with Nevin stage, differentiation grade, MVC, and lymph nodes metastasis. Results： VEGF, Flk-1 expression and positive p53 protein accumulation and BEGF expression was found in 63.3%, 67.3% and 61.2% of tumors, respectively. The expression of Flk-1 was markedly correlated with VEGF （P〈0.05）. The percentage of the patients with both positive VEGF and Flk-1 expressions was 49.0% （24/49）, and their MVC value was markedly higher than that of the others. P53 and VEGF staining status were identical in 55.1% of tumors. The Nevin staging of p53-or VEGF-positive tumors was significantly later than negative tumors. The MVC in p53-or VEGF-positive tumors was significantly higher than that in negative tumors, and MVC in both p53- and VEGF-negative tumors was significantly lower than that in the other subgroups. Conclusion： The findings suggest the VEGF/F1 k- 1 axis and p53-VEGF pathway tumor angiogenesis in human gallbladder carcinoma. Combined analysis of p53 and VEGF expression, plus Flk-1 and VEGF expression might be useful for predicting the tumor vacularity and biologic behaviors of gallbladder cancer.     

E-钙黏蛋白在鼻咽癌组织中的表达水平及其与颈部淋巴结转移的关系

Objective To investigate the expression of E-cadherin in nasopharyngeal carcinoma ( NPC) and its relationship with cervical lymph node metastasis. Methods The expression of E-cadherin in 80 patients with NPC was detected by immunohistochemistry. Results Lower expression of E-cadherin was associated with advanced N-stage of the tumor ( P = 0. 018 ). There was no significant correlation between the expression of E-cadherin and lymph node size ( P = 0.435 ). The expression of E-cadherin was higher in patients with cervical lymph node metastasis limited to a single area than that distributing in some scattered areas (P = 0. 000). There was a trend that the expression of E-cadherin in the cases with the tumor and lymph nodes in the same side was higher (56. 5% ) than that in the patients with bilateral lymph node metastases (32. 6% ) , however, the difference was not significant (P =0. 059). The expression rates of E-cadherin in patients with lymph node metastasis in levels Ⅱ , Ⅲ and Ⅴa were higher than that in levels Ⅰ , Ⅳ, Vb and Ⅵ, but with a non-significant difference (P = 0.059). Conclusion The expression of E-cadherin has influence on the lymph node metastasis in nasopharyngeal carcinoma. E-cadherin expression is negatively correlated with the numbers of the lymph node metastases and the metastasis distance, i. e. a lower expression of E-cadherin leads to an advanced N-stage. The lymph node metastasis of nasopharyngeal cancer from above to below is more considerably influenced by E-cadherin expression than the metastasis towards contralateral lymph nodes.     

E-钙黏蛋白在鼻咽癌组织中的表达水平及其与颈部淋巴结转移的关系

Objective To investigate the expression of E-cadherin in nasopharyngeal carcinoma ( NPC) and its relationship with cervical lymph node metastasis. Methods The expression of E-cadherin in 80 patients with NPC was detected by immunohistochemistry. Results Lower expression of E-cadherin was associated with advanced N-stage of the tumor ( P = 0. 018 ). There was no significant correlation between the expression of E-cadherin and lymph node size ( P = 0.435 ). The expression of E-cadherin was higher in patients with cervical lymph node metastasis limited to a single area than that distributing in some scattered areas (P = 0. 000). There was a trend that the expression of E-cadherin in the cases with the tumor and lymph nodes in the same side was higher (56. 5% ) than that in the patients with bilateral lymph node metastases (32. 6% ) , however, the difference was not significant (P =0. 059). The expression rates of E-cadherin in patients with lymph node metastasis in levels Ⅱ , Ⅲ and Ⅴa were higher than that in levels Ⅰ , Ⅳ, Vb and Ⅵ, but with a non-significant difference (P = 0.059). Conclusion The expression of E-cadherin has influence on the lymph node metastasis in nasopharyngeal carcinoma. E-cadherin expression is negatively correlated with the numbers of the lymph node metastases and the metastasis distance, i. e. a lower expression of E-cadherin leads to an advanced N-stage. The lymph node metastasis of nasopharyngeal cancer from above to below is more considerably influenced by E-cadherin expression than the metastasis towards contralateral lymph nodes.     

环氧合酶-2对鼻咽癌血管生成及预后的影响

目的研究环氧合酶-2(COX-2)在鼻咽癌中的表达及其对血管生成及预后的影响.方法选取临床资料完整并随访达5年以上的86例鼻咽癌患者,采用免疫组织化学技术检测活检标本中COX-2、血管内皮生长因子(VEGF)表达和微血管密度(MVD).结果 COX-2在鼻咽癌组织中阳性表达率为73.3%(63/86),与VEGF表达[69.8%(60/86)]呈显著正相关(rs=0.438,P<0.01),且与肿瘤分级、原发灶范围、颈淋巴结转移、远地转移及较短生存期亦具相关性.MVD平均数为32.3±12.8.结论 COX-2在鼻咽癌组织中高表达,与肿瘤血管生成密切相关,可作为预测鼻咽癌预后的一种有用指标.     

鼻咽癌血管生成与复发转移的关系初探

探讨鼻咽癌血管生成与复发转移的关系。方法采用免疫组织化学Ｓ－Ｐ法对７３例ＮＰＣ石蜡标本组织中的微血管密度及血管内皮细胞生长因子表达进行检测,随访３年,ＮＰＣ复发转移１９例,无复发转移。结果复发转移组的ＭＶＤ及ＶＥＧＦ表达显著高于无复发转移组,ＭＶＤ与ＶＥＧＦ的表达相关。结论ＮＰＣ的ＭＶＤ及ＶＥＧＦ与复发转移密切相关,有可能作为判断肿瘤生物学行为,转移潜能及预后的指标。     

VEGF在鼻咽癌中的表达及其与预后关系

[目的]研究血管内皮生长因子（VEGF）在鼻咽癌中的表达与鼻咽癌患者预后的关系。[方法]通过组织芯片技术与免疫组织化学方法回顾性研究1990～2002年期间200例有临床随访资料的鼻咽癌组织中VEGF蛋白的表达情况，应用卡方检验分析鼻咽癌组织VEGF蛋白表达与临床病理参数之间的关系，并通过生存分析计算鼻咽癌组织内VEGF不同表达组的总生存率。[结果]VEGF在鼻咽癌组织中阳性表达主要位于肿瘤细胞胞浆内。VEGF在鼻咽癌组织中的表达与鼻咽癌患者的TNM分期、复发及远处转移呈正相关（P〈0．05）。VEGF表达阳性及阴性患者5年生存率分别为40．11％和67．75％，两组生存率存在显著性差异（P〈0．01）。[结论]VEGF的表达与鼻咽癌患者TNM分期、复发及远处转移呈明显正相关，其高表达提示预后不良。     

鼻咽癌内血管内皮生长因子的表达及其病理临床意义初探

目的探讨血管内皮生长因子（ＶＥＧＦ）在鼻咽癌中的表达及其与病理、临床各因素之间的关系。方法利用免疫组化ＳＰ方法检测１０例鼻咽正常粘膜、１６例鼻息肉及５６例鼻咽鳞癌石蜡标本中ＶＥＧＦ的表达,用Ⅷ因子相关抗原显示肿瘤内的微血管数。结果鼻咽正常粘膜中ＶＥＧＦ均为阴性;１６例鼻息肉中有２例粘膜层呈ＶＥＧＦ阳性表达;鼻咽癌中ＶＥＧＦ表达阳性率为７１．４％（４０／５６）。ＶＥＧＦ阳性组血管密度明显高于ＶＥＧＦ阴性组（Ｐ＜０．０５）;ＶＥＧＦ的表达也与放疗后局部复发、远地转移及预后差有关,但与肿瘤的组织学分级及临床分期无关。结论ＶＥＧＦ表达与肿瘤血管生成有关,也是预测鼻咽癌复发、远地转移以及预后差的有用指标。     

鼻咽癌细胞凋亡与血管生成的关系

目的：探讨鼻咽癌（ｎａｓｏｐｈａｒｙｎｇｅａｌ ｃａｒｃｉｎｏｍａ，ＮＰＣ）细胞凋亡及瘤内血管生成与患者预后的关系。方法：采用ＴｄＴ酶介导的生物素化ｄＵＴＰ缺口末端标记技术（ＴＵＮＥＬ）和免疫组化Ｓ＝Ｐ法，分别检测２０例正常鼻咽粘膜及７３例ＮＰＣ组织的细胞凋亡率（ａｐｏｐｔｏｓｉｓ ｒａｔｅ，ＡＲ），瘤内微血管密度（ｍｉｃｒｏｖｅｓｓｅｌ ｄｅｎｓｉｔｙ，ＭＶＤ）及血管内皮细胞生长因子（ｖａｓｃｕ     

VEGF、p21ras在鼻咽癌组织中的表达及其临床意义的研究

目的 :研究 VEGF及 p2 1ras蛋白表达与鼻咽癌临床生物学特性及预后的关系 ,更好地评估预后 ,指导临床治疗。方法 :用免疫组化法测定 81例鼻咽低分化鳞癌 VEGF及 p2 1ras蛋白表达 ,对阳性和阴性病例进行统计分析。结果 :VEGF在不同分期、颈淋巴结转移、放疗后远处转移病例中的表达有显著性差异 (P<0 .0 5 ) ,p2 1ras蛋白高表达 ,但与不同分期、局部复发、颈淋巴结转移、远处转移无关。单因素分析显示影响鼻咽癌生存的预后因素有临床分期 (P<0 .0 5 )和癌组织中 VEGF表达水平 (P<0 .0 5 )。 Cox逐步回归模型分析显示临床分期是鼻咽癌的独立预后因素。结论 :鼻咽癌组织中 VEGF表达与临床 N分期、颈淋巴结转移、远处转移有显著相关 ;单因素分析 VEGF表达与鼻咽癌的预后呈正相关 ,可考虑作为预测鼻咽癌患者放射治疗后远处转移和预后的因素之一。 p2 1ras蛋白高表达 ,但与颈淋巴结转移、远处转移、局部复发无关 ,可作为联合检测的指标之一用于肿瘤的早期诊断。 VEGF表达与 p2 1ras蛋白表达无相关性。     

胃癌组织中COX-2和VEGF表达及其相关性研究

目的探讨环氧合酶2(cyclooxygenase-2,COX-2)和血管内皮生长因子(vascularendothelial growthfactor,VEGF)在人胃癌组织中表达及其相关性。方法应用免疫组织化学SABC法检测53例人胃癌组织中COX-2、VEGF和CD34的表达,并以40例正常胃粘膜标本作为对照。对CD34阳性血管进行微血管密度(microvesseldensity,MVD)计数。对COX-2和VEGF的表达采用半定量计分法判定,并结合临床资料进行统计学分析。结果53例人胃癌组织中,COX-2表达阳性者44例,阳性率为83.0%;VEGF表达阳性者45例,阳性率为84.9%。COX-2表达与VEGF表达相关显著(P<0.05)。并且,COX-2和VEGF的表达与TNM分期(P<0.05,P<0.05)、淋巴结转移(P<0.01,P<0.05)和远处转移(P<0.01,P<0.05)相关。COX-2/VEGF同高表达组中MVD值(79.5±25.8)高于COX-2/VEGF同低表达组中的MVD值(45.0±13.9),差异非常显著(P<0.01)。结论胃癌组织中COX-2与VEGF共表达,并相互协同促进肿瘤血管生成和转移。     

VEGF蛋白检测对预测鼻咽癌远处转移风险的价值

背景与目的:血管内皮生长因子(vascularendothelialgrowthfactor,VEGF)是最重要的血管生长促进因子,并与多种肿瘤的恶性度及转移关系密切。本研究旨在通过同时检测鼻咽癌组织及血浆中的VEGF蛋白,评价其对预测鼻咽癌远处转移风险的价值。方法:同时收集59例鼻咽癌患者治疗前鼻咽癌组织及血清标本,用免疫组化LSAB法检测鼻咽癌组织中的VEGF蛋白,用ELISA法检测血清中的VEGF蛋白;并随访了解患者的远处转移情况,分析VEGF蛋白水平与患者远处转移的关系。结果:鼻咽癌组织及血清中的VEGF蛋白水平与远处转移均成正相关(均P<0.05)。鼻咽癌组织中VEGF蛋白表达阴性(-)、弱阳性(+)、阳性(++)和强阳性(+++)组患者的3年无转移生存率分别为100%、95.24%、65.19%、58.93%,各组之间有显著性差异(P=0.0193)。血清VEGF蛋白水平<466.78ng/L和≥466.78ng/L组的3年无转移生存率分别为82.57%,59.11%,两组比较有显著性差异(P=0.0211)。多因素分析发现鼻咽癌组织及血清VEGF蛋白水平对鼻咽癌远处转移都是独立的影响因素。结论:鼻咽癌组织及血清中VEGF蛋白检测均可用于判断鼻咽癌患者远处转移风险,二者联合检测可提高预测患者出现远处转移的能力。     

鼻咽癌组织中COX-2表达与树突状细胞浸润的相关性研究

目的 探讨环氧化酶-2(COX-2)在鼻咽癌(NPC)组织中的表达及其与树突状细胞(DCs)浸润的关系.方法 采用免疫组化S-P法检测32例NPC组织中COX-2表达及其与DCs浸润程度的关系.结果 COX-2在NPC组织中的阳性表达率为87.5%,正常鼻咽黏膜组织中的阳性表达率为6.25%,差异有统计学意义(P<0....     

COX-2、VEGF在胃癌中的表达及其预后意义

目的 :研究COX 2、VEGF表达对胃癌的预后意义。方法 :收集我院 1990～ 1999年早、中期胃癌 2 81例 ,对有完整存档蜡块资料的 2 32例进行免疫组织化学染色。检测COX 2、VEGF及MVD在胃癌组织中的表达 ,并分析其预后意义。结果 :胃癌组织中COX 2、VEGF阳性表达的MVD值均显著高于COX 2、VEGF阴性表达者(P <0 0 1) ;COX 2、VEGF阳性表达及MVD值与胃癌淋巴结转移、血管浸润均密切相关 (P <0 0 1) ;COX 2、VEGF阳性表达者五年生存率明显低于阴性者 (P <0 0 1)。多因素分析显示 ,VEGF表达、淋巴结转移、COX 2表达、浸润深度、血管浸润均为胃癌独立的预后因素。结论 :COX 2、VEGF在胃癌组织呈过度表达状态 ,与胃癌的生长和浸润转移关系密切 ,可以作为反映胃癌生物学行为和判断预后的有效指标。