核转录因子-κ B在胰腺癌中的表达及其与上皮细胞间质转化的关系

目的 研究核转录因子-κ B(NF-κ B)在人类胰腺癌组织中的表达及与上皮细胞间质转化(EMT)标志物上皮性钙黏附蛋白(E-cad)和波形蛋白(Vimentin)的关系,探讨其与胰腺癌恶性生物学行为的关系.方法 应用免疫组织化学法检测62例人类胰腺癌组织中NF-κ B、上皮源性标志物E-cad蛋白、间质源性标志物Vimentin蛋白的表达,并分析它们相互间及其与临床病理因素间的关系.结果 胰腺癌组织中NF-κ B和Vimentin蛋白阳性表达率分别为81%(50/62)和61%(38/62),E-cad蛋白的表达缺失率为55%(34/62).在胰腺癌组织中NF-κ B的表达和Vimentin蛋白的阳性表达、E-cad蛋白的缺失表达均呈正相关(r值分别为0.343、0.352,均P＜0.05),并且NF-κ B的阳性表达与胰腺癌的淋巴结转移(x2=11.761,P＜0.05)、远处转移(x2=9.225,P＜0.05)相关,而与患者性别、年龄、肿瘤部位、肿瘤类型及分化程度无关(P＞0.05).E-cad蛋白的表达缺失、Vimentin蛋白的阳性表达与胰腺癌的淋巴结转移、远处转移均有相关性(x2值分别为6.914、4.984;7.753、5.144,均P＜0.05).结论 NF-κ B在胰腺癌中表达增高,同时可能通过诱导胰腺癌组织的EMT而促进胰腺癌的浸润和转移.

Abstract：

Objective To investigate the expression of NF-κB and epithelial-mesenchymal transition (EMT) related markers E-cadherin and Vimentin proteins in human pancreatic cancer tissues and its relation with the malignant features. Methods The expression of NF-κB、E-cadherin and Vimentin proteins in 62 cases of pancreatic cancer tissues were detected by using immunohistochemistry and compared with the clinicopathological data of pancreatic cancer. Results The positive expression rate of NF-κB was 81% (50/62), Vimentin protein increased of expression was 61% (38/62), and E-cadherin protein loss of expression was 55 % (34/62) in pancreatic cancer. The positive expression rate of NF-κB was significantly related with the lymph node metastasis (x2=11.761, P＜0.05), distant metastasis (x2=9.225, P＜0.05), the absent expression of epithelial marker E-cadherin protein (r =0.352, P ＜0.05) and the positive expression of mesenchymal marker Vimentin protein (r=0.343, P ＜0.05), but there was no relation with the patients gender,age, tumor location, tumor type and tumor differentiation (P ＞0.05). In addition, the significant correlation of E-cadherin expression loss and Vimentin expression with tumor lymph node metastasis and distant metastasis was found (x 2= 6.914, 4.984, 7.753, 5.144, P ＜0.05). Conclusion The overexpression of NF-κB in pancreatic cancer may accelerate invasion and metastasis of pancreatic cancer through inducing EMT.     

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.     

RELATIONSHIP BETWEEN EXPRESSIONS OF P38 PROTEIN IN HUMAN BREAST CARCINOMA AND LYMPH NODES METASTASIS

Objective： To detect the change of p38 protein expression and investigate the relationship of p38 and lymph nodes metastasis in human breast carcinomas. Methods： Sixty breast cancer cases were checked by S-P immunohistochemistry technique and 30 breast cancer cases were examined by Western Blot. Results： Immunohistochemical results showed that p38 protein was observed in breast cancer and normal cytoplasm. P-p38 was positive in nucleus in breast cancer. P38 protein expressed positively in 29 out of 38 patients who had lymph nodes metastasis （positive rate 76.3%） and in 9 out of 22 patients who had no lymph nodes metastasis （positive rate 40.9%）. There was a significant difference between these two groups （P〈0.01）. The positive rate of p-p38 in patients who had lymph nodes metastasis was 68.4%, and the positive rate in patients who had no metastasis was 36.4%, and there was a significant difference between these two groups （P〈0.05）. The result of western blot showed that the protein contents of p38 and p-p38 in patients with metastasis was higher than those in patients without metastasis （P〈0.05）. P38 and p-p38 protein expressions had relation with clinical pathological grades in breast cancer, higher in grade Ⅲ than in grade Ⅰ, Ⅱ （P〈0.05）, while had no relation with patients＇ age and tumor size （P〉0.05）. Conclusion： p38 and p-p38 protein expressions had relationship with lymph nodes metastasis and the levels of p38 and p-p38 protein expression in groups with lymph nodes metastasis were higher than in groups without lymph nodes metastasis. P38 and p-p38 protein expressions had relationship with clinical grades and had no relationship with patients＇ age and tumor size.     

Relationship between expression of CEA,E-cadherin and liver metastasis in colorectal cancer

OBJECTIVE To investigate the expression of E-cadherin and CEA in serum in colorectal carcinoma and their relationship with liver metastasis.
METHODS CEA level was measured post-operatively by radioimmunoassay of 60 patients with colorectal cancer. Immunohistochemical analysis was used to evaluate the expression of E-cadherin.
RESULTS In liver metastasis group, 24 patients （24/26, 92.3%） were high level of CEA, but only 9 patients in non-liver metastasis group. The difference is significant （P = 0.004）. Expression of E-cadherin significantly correlated with differentiation, but was not associated with T stage or N stage. Liver metastatic rate in negative expression was higher than that in positive expression. And the survival analysis showed that time of liver metastasis was significant different in two groups （P 〈 0.05）.
CONCLUSION The expression of CEA in serum can be used to predict liver mestatasis of colorectal cancer after operation. E-cadherin, associated with tumor differentiation, is also a hopeful indicator for the prediction of liver metastasis in patients with colorectal cancer.     

RhoA和核因子κB在胃癌中的表达及其临床意义

目的 探讨RhoA和核因子κB(NF-κB)在胃癌组织中的表达,分析其与胃癌患者临床病理特征及预后的关系.方法 利用免疫组化、组织芯片技术检测189例胃癌、54例相应癌旁及32例正常胃黏膜组织中RhoA蛋白和NF-κB蛋白的表达.用Kaplan-Meier法行单因素生存分析,应用Cox回归模型进行多因素生存分析.结果 RhoA蛋白在胃癌、癌旁和正常胃黏膜组织中的表达阳性率分别是84.7%、68.5%和65.6%,胃癌与癌旁及正常胃黏膜组织的阳性率差异有统计学意义(P＜0.05).NF-κB蛋白在胃癌、癌旁和正常胃黏膜组织中的表达阳性率分别是75.1%、42.6%和15.6%,且三者的阳性率相互比较,差异均有统计学意义(P＜0.05).RhoA和NF-κB在胃癌组织中的蛋白表达呈正相关(r=0.203,P=0.005).RhoA的蛋白表达与胃癌的浸润深度有关(P＜0.05).NF-κB的蛋白表达与胃癌的浸润深度和有无淋巴结转移有关(P＜0.05).单因素分析结果显示,肿瘤大小、有无淋巴结转移、浸润深度和NF-κB的蛋白表达影响胃癌患者术后的生存(P＜0.05);多因素回归分析结果显示,NF-κB蛋白表达、有无淋巴结转移和浸润深度为影响胃癌患者预后的独立因素(均P＜0.05).结论 RhoA和NF-κB参与胃癌的发生、发展,并在胃癌的浸润和转移中起重要作用;NF-κB的蛋白表达水平、有无淋巴结转移和浸润深度是影响胃癌患者预后的独立因素.

Abstract：

Objective To investigate the expression of RhoA and NF-κB in gastric carcinoma and their correlation with clinicopathological fearures.To determine the effective prognostic factors of long-term suivival of gastric carcinoma patients.Methods The role of RhoA and NF-κB in gastric carcinoma was assessed by tissue array technology and the levels of RhoA and NF-κB expression in paraffin-embedded tissues was quantified by immunohistochemistry from 189 cases of gastric carcinoma, 54 cases of their adjacent tissues, and 32 cases of normal gastric mucosa.The prognosis of gastric carcinoma was evaluated by Kaplan-Meier survival analysis and Cox multivariate regression analysis.Results The positive rates of RhoA expression were 84.7%, 68.5% and 65.6% in gastric carcinoma, adjacent tissues and normal mucosa, respectively.The expression of RhoA in gasric carcinoma was significantly higher than that in adjacent tissues and normal mucosa ( P ＜ 0.05 ).The positive rates of NF-κB expression were 75.1%,42.6% and 15.6%% in gastric carcinoma, adjacent tissues and normal mucosa, respectively.The expression of NF-κB in gasric carcinoma was significantly higher than that in adjacent tissues and normal mucosa (P ＜ 0.05 ).RhoA was positively linked with NF-κB ( r = 0.203, P = 0.005 ).In gastric carcinoma, the expression of RhoA was related with depth of invasion (P ＜ 0.05), and the expression of NF-κB was related with depth of invasion and lymph node metastasis ( P ＜ 0.05 ).The Kaplan-Meier survival analysis showed that the tumor size, lymph node metastasis, depth of invasion, expression of RhoA and NF-κB can shorten the cumulative survival rate.With these paramaters entering the Cox multivariate regression analysis mode, it was revealed that expression of NF-κB, lymph node metastasis and depth of invasion are independent prognostic factors.Conclusions The overexpression of RhoA and NF-κB is involved in the occurrence and development of gastric carcinoma.RhoA is positively linked with NF-κB.They are correlated with the invasion and metastasis of gastric carcinoma.The expression of NF-κB, lymph node metastasis, depth of invasion are independent prognostic factors playing an important role in prediction of the clinical outcome after radical resection of gastric carcinoma.     

胃癌组织中Ets-1的表达及其与血管生成临床病理特征和预后的关系

Objective To investigate the expression of Ets-I in gastric carcinoma,pars-cancerous tissue and metastatic lymph nodes,and to determine the relationship between Ets-1 expression and clinicopathological features,angiogenesis and survival of patients with gastric carcinoma.Methods Gastric carcinoma tissue microarray was used to determine Ets-I protein expression by SP immunohistochemical staining in 189 advanced gastric cancer,54 papacancerous tissues,41 metastatic lymph nodes and 32 control tissues.Results The positive rates for Ets-1 expression of the carcinoma,paracancerous and control tissues were 71.4 %,29.6% and 18.8%,respectively,with a significant difference among the three groups(P ＜0.01).In the cancer tissues,the positive rate of Ets-1 protein expression was significantly associated with depth of invasion and lymph node metastasis(P ＜0.01),but not associated with degree of differentiation,Lauren's histological type,sex,age,and size of tumor(P ＞0.05).The positive rates for Ets-1 expression of the 41 gastric cancer and 41 metastatic lymph nodes were significantly different(P ＜0.05).In metastatic lymph nodes,the positive rate for Ets-1 expression was higher.The MVD in Ets-1 positive tumors was higher than that in the Ets-1 negative tumors,with a significant difference(P ＜ 0.05).Kaplan-Meier survival analysis showed that the survival time of Ets-1-negative patients was longer than that of Ets-1-positive patients (P ＜0.05).Cox regression analysis showed that Ets-1 expression was not an independent prognostic factor of gastric carcinoma.Conclusion A higher expression of Ets-1 is involved in carcinogenesis,development,invasion,and metastasis of gastric cancer.Ets-1 plays an important role in angiogenesis in gastric cancer.Ets-1 is a useful marker for predicting the outcome for patients with gastric carcinoma,though it is not an independent prognostic indicator.     

骨肉瘤组织中E-cadherin和β-catenin的表达及临床意义

Objective To explore the expression and clinical significance of E-cadherin and β-catenin in osteosarcoma tissues. Methods From April 2012 to October 2015， 54 specimens of osteosarcoma tissues and 22 specimens of osteochondroma tissues were enrolled. Immunohistochemistry was used to detect the expression of E-cadherin and β catenin in those above tissues. The correlation of the expression of E-cadherin， β-catenin and clinical parameters of osteosarcoma were analyzed. Results In 54 specimens of osteosarcoma tissues， the positive rate of E-cadherin protein was 35.2％（19／54）， significantly lower than 68.2％（15／22） in osteochondroma tissues （P＜0.05）. However the positive rate of β-catenin protein was 68.5％（37／54）， significantly higher than 9.1％（2／22） in osteochondroma tissues （P＜0.05）. The expression of E-cadherin protein was associated with Enneking stage and metastasis （P＜0.05）. The expression of β-catenin protein was associated with tumor size， Enneking stage and metastasis （P＜0.05）. Moreover， the expression of E cadherin and β catenin was negatively correlated （r=-0.764，P＜0.05）. ConclusionE-cadherin and β-catenin are abnormally expressed in osteosarcoma tissues， and they are correlated to Enneking stage and metastasis. Both of them play a role in the development and progression of osteosarcoma.     

甲状腺癌钠、碘转运蛋白与血清β2-MG变化的相关性分析（英文）

Objective: The aim of our study was to investigate the correlation between the expression of sodium/iodide symporter, serum levels of β2-MG and prognosis of thyroid carcinoma patients. Methods: Ninty-five cases with thyroid carcinoma, using enzyme-linked immunosorbent assay with double-antibody sandwich to detect the serum β2-MG levels and immunohistochemistry to detect NIS expression of thyroid cancer tissue. Results: Thirty-seven cases showed positive expression of sodium/iodide symporter (38.9%) and 30 cases showed positive expression of β2-MG (31.57%). There were significant differences of NIS expression (χ2=8.207, P=0.017) and β2-MG expression (χ2=10.121, P=0.006) between different pathological types of thyroid carcinoma, but there was no correlation between the positive rate of the two research groups (r=-0.546, P=0.633). The significant differences was observed in expression of sodium/iodide symporter (χ2 = 9.272, P=0.002) and expression of β2-MG (χ2=4.441, P=0.035) between the group with neck lymph node metastasis and the group without neck lymph node metastasis and both positive rate was significantly negatively correlated (r=1.000, P=0.000). The significant differences was observed in expression of sodium/iodide symporter (χ2=9.272, P=0.002) and expression of β2-MG (χ2 = 3.867, P=0.043) between the group with distant organ metastasis and the group without distant organ metastasis (χ2=11.985, P=0.001) and both positive rate was significantly negatively correlated (r=-1.000, P=0.000). Conclusion: There are significantly negatively correlated between neck lymph node metastasis, distant organ metastasis and expression of sodium/iodide symporter and expression of β2-MG. Thyroid cancer lymph node and distant organ metastasis, the tumor tissue NIS expression and serum levels of β2-MG is significantly negatively correlated. The detection of serum β2-MG provides clinical reference value for the effects on radionuclide therapy and prognosis assessment of thyroid carcinoma. Serum β2-MG levels is negatively correlated with prognosis in thyroid cancer patients.     

非小细胞肺癌Twist表达与EMT相关性分析

目的：探讨非小细胞肺癌（non-small cell lung cancer,NSCLC）组织转录因子Twist的表达及其与上皮一间质转化（epithelial mesenchymal transition,EMT）的相关性。方法：选取2010—02—2011-11山东省肿瘤医院62例NSCLC患者肺癌组织和20例癌旁组织标本,采用免疫组织化学PV两步法检测Twist、EMT表型分子E-cadherin和Vimentin蛋白表达,并分析其与患者临床病理因素的相关性。结果：NSCLC组织Twist阳性表达率为64．5％（40／62）,癌旁组织为5．0％（1／20）,X2=21．426,P〈0．001;癌组织E—cadherin阳性表达率为54．8％（34／62）,癌旁组织为100．0％（20／20）X2=13．716,P〈0．001;癌组织Vimentin阳性表达率为51．6％（32／62）,癌旁组织为10．0％（2／20）,X2=8．697,P=0．003。Twist表达增加与NSCLC分化程度（X2=6．282,P=0．043）、淋巴结转移（X2=11．806,P=0．001）和临床分期（X2=6．277,P=0．017）有关。Spearman相关分析显示,Twist与E-cadherin表达呈负相关,r=-0．470,P〈0．001;与Vimentin表达呈正相关,r=0．429,P=0．001。结论：Twist高表达与肺癌发生发展、转移和EMT有关,Twist检测有助于肺癌评估恶性程度及预后。     

缺氧能引起EMT的发生促进乳腺癌的侵袭和迁移

 目的　探讨缺氧对人类乳腺癌细胞MCF-7上皮-间质转化（ EMT）标志分子E-钙黏着素（E-cadherin）、波型蛋白（Vimentin）及侵袭迁移能力的影响,揭示缺氧引起乳腺癌侵袭转移的机制, 为临床治疗乳腺癌提供实验及理论依据。方法　采用Western blot检测低氧诱导因子-1α（HIF-1α）、E-cadherin、Vimentin的变化;四甲基偶氮唑蓝（MTT）法检测缺氧对人类乳腺癌细胞MCF-7黏附能力的影响;Transwell侵袭小室法检测缺氧对MCF-7细胞侵袭和迁移能力的影响。结果　随着缺氧时间的延长,人类乳腺癌细胞中E-cadherin表达明显降低（0.09±0.02）（t＝30.98,P＝0.0007）,Vimentin表达明显升高（0.69±0.04）（t＝915,P＝0.0000) ;缺氧72 h组MCF-7细胞黏附（81.23±0.74）（t＝82.05,P＝0.000）、侵袭（120±6） （t＝22.78,P＝0.0009）和迁移能力明显增强（190±6）（t＝23.49,P＝0.000）。结论　缺氧能下调E-cadherin、上调Vimentin而引起EMT的发生,促进MCF-7细胞黏附、侵袭和迁移。     

结直肠癌中ＦＡＫ、ＦＡＫｐＹ３９７、Ａｋｔ、ＮＦ-κＢ表达及相关性研究

目的：检测黏着斑激酶（ＦＡＫ）、磷酸化ＦＡＫ（ＦＡＫｐＹ３９７）、Ａｋｔ和细胞核因子（ＮＦ-κＢ）在结直肠癌组织中的表达,并探讨其相关性。方法：采用免疫组织化学ＳＰ法,检测７４例结直肠癌组织与１０例正常结肠组织中ＦＡＫ、ＦＡＫｐＹ３９７、Ａｋｔ和ＮＦ-κＢ的表达。结果：结直肠癌组织标本中ＦＡＫ、ＦＡＫｐＹ３９７、Ａｋｔ和ＮＦ-κＢ的阳性率分别为８２.４３％、４５.９５％、５２.７０％和５９.４６％,除ＦＡＫｐＹ３９７外,ＦＡＫ、Ａｋｔ、ＮＦ-κＢ均与正常结肠壁组织表达的差异显著（Ｐ＜０.０５）。ＦＡＫ表达与分化程度、淋巴结转移有关（Ｐ＜０.０５）,但不受患者性别、年龄、肿瘤的大小及位置、Ｄｕｋｅｓ'分期的影响。Ａｋｔ阳性表达与分化程度显著相关（Ｐ＜０.０５）,ＮＦ-κＢ表达与淋巴结转移显著有关（Ｐ＜０.０５）,并且Ａｋｔ、ＮＦ-κＢ表达与ＦＡＫ表达呈显著正相关（Ｐ＜０-０５）。结论：ＦＡＫ、Ａｋｔ、ＮＦ-κＢ在结直肠癌组织中均高表达,且Ａｋｔ、ＮＦ-κＢ表达与ＦＡＫ有显著正相关性,提示生存信号传导通路ＦＡＫ／Ａｋｔ／ＮＦ-κＢ在结直肠癌的发生、演进中起重要作用。     

Shh和bFGF在胰腺癌中的表达及其与临床病理特征关系

[目的]探讨Shh、bFGF在胰腺癌组织中的表达及其意义。[方法]应用免疫组织化学SP法检测Shh和bFGF蛋白在34例手术切除的原发性胰腺癌组织，21例胰腺良性病变组织中的表达。[结果]Shh在胰腺癌组织中阳性表达率为64．7％（22／34），高于胰腺良性病变组织（0／21）（X^2=22．647，P=-0．000）。bFGF在胰腺癌组织和胰腺良性病变中阳性表达率分别为67．6％（23／34）和66．7％（14／21），无显著性差异（X^2=0．006，P=0．940）。Shh表达与患者年龄、性别及肿瘤部位、大小、分化、淋巴结转移、血管浸润无明显相关，与肿瘤TNM分期、远处转移密切相关（P〈0．05）；bFGF的表达与TNM分期、血管浸润、远处转移密切相关（P〈0．05）。胰腺癌组织中Shh表达与bFGF表达呈正相关（r=-0．410，P=0．016）。[结论]Shh和bFGF在胰腺癌组织的表达与胰腺癌的分期和远处转移相关；两者可能在胰腺癌发生发展中起协同作用。     

鼻咽癌组织中上皮-间叶转换的检测及与其转移的相关性

目的检测鼻咽癌组织中上皮-间叶转换(EMT),探讨其与肿瘤转移的关系。方法应用免疫组织化学SP法,检测130例鼻咽未分化型非角化性癌,23例鼻咽癌及其配对淋巴结转移癌中E-钙黏连蛋白(E-cd)和波形蛋白(Vimentin)的表达。结果鼻咽癌转移组与非转移组中E-cadherin和Vimentin阳性表达率分别为62.3%(33/53)、60.4%(32/53)和84.4%(65/77)、27.3%(21/77)。转移组与非转移组E-cadherin和Vimentin表达率比较有非常显著性差异(P<0.01)。鼻咽癌原发灶与其配对淋巴结转移灶E-cadherin和Vimentin阳性表达率比较有显著性差异(P<0.05)。Spearman相关分析显示Vimentin与E-cadherin表达呈负相关。结论鼻咽未分化型非角化性癌具有上皮-间叶转换(EMT)样作用,同时其EMT与鼻咽癌的转移密切相关。     

上皮-间充质转化相关蛋白在食管癌中的表达及其临床意义

目的探讨上皮-间充质转化相关蛋白E-钙黏蛋白(E-cadherin)、细胞角蛋白(Cytokeratin)及波形蛋白(Vimentin)在食管癌组织中的表达水平及其临床意义。方法应用免疫组织化学方法及组织芯片技术,分别检测105例食管癌组织和11例食管正常组织中E-cadherin、Cytokeratin及Vimentin的蛋白表达水平,并分析其与患者临床参数的相关性及相互之间的差异。结果根据免疫组织化学染色评分进行分组,105例食管癌组织中,E-cadherin高表达63例,低表达42例;Cytokeratin高表达51例,低表达54例;Vimentin高表达35例,低表达70例。E-cadherin在正常组织(H-score:172.7±40.7)中的表达水平显著高于肿瘤组织(H-score:31.9±33.1)(P<0.0001);Cytokeratin在正常组织(H-score:272.7±12.0)及肿瘤组织(H-score:250.1±71.1)中的表达水平差异无统计学意义(P=0.4481)。在105例食管癌组织中,肿瘤≥3.5 cm组中的Cytokeratin表达水平显著低于肿瘤<3.5cm组(P=0.0137);Vimentin在正常组织[阳性细胞百分比(3.5±1.4)%]及肿瘤组织[阳性细胞百分比(10.2±22.7)%]的表达水平差异无统计学意义(P=0.1021)。E-cadherin高表达组中Vimentin的表达水平显著低于E-cadherin低表达组(χ2=4.464,P=0.0346)。结论上皮-间充质转化相关蛋白在食管癌发生与发展过程中表达水平的变化表明食管癌组织中存在上皮-间充质转化现象,对其进行深入研究将有助于阐明食管癌浸润及转移的分子机制。     

MMP-2和E-cadherin蛋白在食管黏膜病变中的表达

目的： 探讨MMP-2和E-cadherin蛋白在食管黏膜病变中的表达及其与食管癌的发生及转移的关系。方法：采用免疫组织化学方法对45例食管癌组织、21例不典型增生组织、24例正常组织中MMP-2和E-cadherin蛋白的表达进行检测,并分析MMP-2和E-cadherin表达与食管癌发生发展过程中各项病理指标的关系。结果：MMP-2蛋白在癌组织中的表达率为40.00%(18/45),在不典型增生组织中的表达率为38.10% (8/21),在正常组织中表达率为4.17%(1/24),三者间差异具有统计学意义(P<0.05);有淋巴结转移组的MMP-2蛋白阳性表达率(55.56%,15/27)明显高于无淋巴结转移组(16.67%,3/18);有纤维膜浸润组MMP-2蛋白的阳性表达率(48.57%,17/35)明显高于无纤维膜浸润组(10.00%,1/10)。E-cadherin蛋白在正常的食管黏膜上皮组织阳性表达为100% (24/24),在不典型增生组织中的阳性表达率为71.43%(15/21),在癌组织中的阳性表达率为28.89%(13/45),较前两组明显降低(P<0.05)。E-cadherin与MMP-2蛋白的表达呈负相关(χ2=4.615,r=-0.793,P<0.05)。结论：MMP-2蛋白的高表达和E-cadherin蛋白的低表达可能与食管癌的发生和转移有关,在食管癌的侵袭、转移过程中MMP-2与E-cadherin有拮抗作用。     

E-cadherin和Vimentin表达与早期宫颈癌临床病理特征及预后的关系

目的 探讨早期宫颈鳞癌组织中上皮间质转化相关因子E-钙黏蛋白（E-cadherin）和波形蛋白（Vimentin）的表达与临床病理特征及预后的关系。方法 采用免疫组化SP法检测E-cadherin和Vimentin在50例Ⅰb～Ⅱa期宫颈鳞癌术后标本中的表达情况,分析两者与年龄、FIGO分期、分化程度、深肌层浸润、淋巴结转移、脉管瘤栓和宫旁浸润等临床病理特征的关系,并探讨其对预后的评估价值。结果 宫颈鳞癌组织中E-cadherin 高表达率为44.0％,Vimentin 阳性率为36.0％。E-cadherin表达与分化程度和脉管瘤栓密切相关（P＜0.05）,Vimentin表达与淋巴结转移情况和分化程度密切相关（P＜0.05）。单因素分析显示,宫颈鳞癌5年生存率与淋巴结转移、深肌层浸润及E-cadherin表达情况密切相关（P＜0.05）; Vimentin 阴性表达者的5年生存率高于阳性者（87.4％ vs. 72.2％）,差异无统计学意义（P＞0.05）。Cox多因素分析显示E-cadherin表达和淋巴结转移是影响早期宫颈癌患者5年生存率的独立因素（P＜0.05）。结论 E-cadherin和Vimentin表达程度与早期宫颈癌侵袭转移相关;E-cadherin表达、淋巴结转移是影响早期宫颈癌患者5年生存率的独立预后因素。     

ABCG2和NF-κB p65在鼻咽癌中的表达及其意义

目的检测乳腺癌耐药蛋白(ABCG2)和核因子κB(NF-κB)p65在鼻咽癌中的表达及其临床意义。方法采用免疫组化SP法检测34例鼻咽癌和10例正常鼻黏膜组织中ABCG2和NF-κB p65的表达。结果鼻咽癌组织中ABCG2及NF-κB p65的阳性表达率分别为58.8%和64.7%,正常鼻黏膜中分别为10.0%和20.0%,差异有统计学意义(P<0.05)。鼻咽癌组织ABCG2表达与淋巴结转移、临床分期有关,NF-κB p65表达仅与临床分期有关,两者呈正相关(r=0.694,P<0.01)。结论 ABCG2和NF-κB p65可能共同在鼻咽癌进展中有一定的促进作用。