Expression of beta-catenin and APC protein in ovarian epithelial tumor and its implication

Objective： To investigate the expression of beta-catenin, APC protein and its implication in ovarian epithelial tumor. Methods： Immunohistochemical staining with SP method was conducted to determine the expression of beta-catenin and APC protein in 48 cases of ovarian epithelial tumor. Results： The abnormal expression rates of beta-catenin in ovarian malignant and borderline epithelial tumors were higher than that in benign epithelial tumors. The expression of APC protein in benign epithelial tumors was significantly greater than that in malignant epithelial tumors. A significant negative correlation was found between beta-catenin and APC protein in ovarian epithelial tumors. Conclusion： Beta-catenin and APC protein have important effect on pathogenesis and development of ovarian epithelial tumors.     

Expression of Wnt-1, beta-catenin and c-myc in Ovarian Epithelial Tumor and Its Implication

Objective： To investigate the expression of Wnt-1, beta-catenin and c-myc in normal ovarian epithelial cell and malignant ovarian epithelial tumor. Methods： Immunohistochemical staining with SP method was conducted to identify the expression of Wnt-1, beta-catenin and c-myc in 18 samples of normal epithelial tissue and 34 cases of malignant epithelial tumor of ovary. Results： The expression rate of Wnt-1 and c-myc in malignant epithelial tumors was higher than those in normal epithelial cell （P〈0.05）. The abnormal expression rate of beta-catenin in malignant ovarian epithelial tumors was higher than that in normal epithelial cell （P〈0.05）. A significant positive correlation was found between Wnt-1, beta-catenin and c-myc in malignant ovarian epithelial tumor （P〈0.05）. A significant difference of expressions of Beta-catenin and C-myc was found between serous and mucinous tumors （P〈0.05）. Conclusion： The abnormal expression of Wnt-1, beta-catenin and c-myc might indicate the malignant transformation in ovarian epithelial tumors.     

Expressions of Beta-catenin, E-cadherin and MMP-7 in ovarian epithelial tumors

Objective： To investigate the expressions of Beta-catenin, E-cadherin and MMP-7 and their implications in ovarian epithelial tumor. Methods： Immunohistochemical staining with SP method was conducted to identify the expressions of Beta-catenin, E-cadherin and MMP-7 in ovarian epithelial tumor in 66 cases. Results： The abnormal expression rate of Beta-catenin in malignant ovarian epithelial tumor was higher than those in borderline and benign epithelial tumors （P〈0.05）. The positive rates of E-cadherin in benign and borderline ovarian epithelial tumors were significantly greater than that in malignant epithelial tumor. The expression rates of MMP-7 in malignant and borderline ovarian epithelial tumors were higher than that in benign epithelial tumor （P〈0.05）. Conclusion： The abnormal expressions of Beta-catenin, E-cadherin and MMP-7 might be used to indicate the malignance transform of ovarian epithelial tumors, but they have no significant correlation with peritoneal dropsy invasion, caul invasion and appendant invasion in ovarian epithelial tumor.     

Kai1在卵巢上皮性肿瘤中的表达及其意义

目的 :探讨Kai1(KangAi 1)在卵巢上皮性肿瘤中的表达及临床意义。 方法 :采用免疫组织化学S P法 ,检测 10 8例上皮性卵巢肿瘤和 12例正常卵巢中Kai1的表达情况。结果 :Kai1在卵巢上皮性癌、交界性卵巢肿瘤、良性卵巢肿瘤和正常卵巢组织中的阳性表达率分别为 2 6 6 %、71 4 %、73 3%和 83 3% ,在恶性肿瘤中的阳性表达较良性肿瘤明显下降 (P <0 0 5 )。卵巢浆液性囊腺癌较粘液性囊腺癌及子宫内膜样癌Kai1阳性表达率显著下降 (P <0 0 5 ) ,在不同细胞分化等级与临床分期间Kai1表达无明显差异 (P >0 0 5 ) ,但在伴有和不伴有淋巴结转移的卵巢上皮性癌中Kai1的阳性表达率有显著差异 (P <0 0 5 )。结论 :Kai1表达下降可能是上皮性卵巢癌发生、发展中的一个早期事件 ,有望成为预测卵巢癌发生转移及判断患者预后的参考指标。     

P53、Bcl-2、P16和c-myc在卵巢上皮性肿瘤中的表达及意义

 目的 研究P53、Bcl-2、P16和c－myc基因在卵巢上皮性肿瘤中的意义。方法 采用免疫组织化学法（SABC法）对80例良性、26例交界性和116例恶性卵巢上皮性肿瘤P53、Bcl-2、P16和c-myc癌基因的表达情况进行检测。结果 P53、Bcl-2、P16和c－myc表达率分别为36．48％、27．47％、83．33％和52．25％,P53、Bcl-2、c-myc表达随恶性程度增加而增高,良恶性之间表达差异有显著意义（P＜0．01）,P16随恶性程度增高表达率降低,恶性和良队间表达差异有显著性（P＜0．01）,恶性肿瘤中的P53\、Bcl-2和c－myc随分期增加,表达增加。结论 四种癌基因在卵巢上皮性肿瘤中高表达或表达失调,良恶性之间表达差异有显著意义,表明它们在卵巢上皮性肿瘤发生、发展中起重要作用。     

MDM2与p53在卵巢上皮性肿瘤中的表达

[目的]探讨MDM2、p53在卵巢癌发生中的作用.[方法]用免疫组化SP法检测8例卵巢良性上皮性肿瘤、7例卵巢交界性上皮性肿瘤和19例卵巢癌中MDM2、p53蛋白的表达.[结果]在卵巢良性上皮性肿瘤、卵巢交界性上皮性肿瘤和卵巢癌中,MDM2的阳性表达率分别为12.50%(1/8)、28.59%(2/7)和47.37%(9/19);p53的阳性表达率分别为25.00%(2/8)、57.14%(4/7)和78.95%(15/19).3组中,MDM2阳性表达率无显著性差异(P>0.05),而p53在卵巢癌中的阳性表达率显著高于卵巢良性上皮性肿瘤和交界性上皮性肿瘤(P<0.05).在卵巢癌中,p53与MDM2表达的阳性率不相关(P>0.05).[结论]p53的异常表达与卵巢肿瘤的恶性表型相关.在卵巢癌的发生发展过程中,p53的异常表达比MDM2可能更有意义.     

上皮性卵巢肿瘤RASSF1A基因甲基化与蛋白表达的关系及意义

目的:检测上皮性卵巢肿瘤中RASSF1A基因启动子CpG岛的甲基化状态,并探讨基因异常甲基化与蛋白表达的关系及其意义。方法:运用甲基化特异性PCR(MSP)方法对62例上皮性卵巢癌、21例交界性囊腺瘤及30例良性囊腺瘤的RASSF1A基因启动子甲基化状态进行检测,免疫组化S-P法检测上述标本中RASSF1A蛋白表达,并结合肿瘤生物学行为进行分析。结果:上皮性卵巢癌组织、卵巢交界性囊腺瘤组织中RASSF1A基因启动子区甲基化率(58.06%、42.85%)显著高于卵巢良性囊腺瘤组织(13.33%),差异有统计学意义(P<0.05)。RASSF1A基因启动子区甲基化与上皮性卵巢癌的细胞分化程度和临床分期密切相关(P<0.05)而与组织类型和患者年龄及绝经与否无相关性(P>0.05);RASSF1A基因甲基化与其蛋白表达下降一致。结论:卵巢癌组织中存在RASSF1A基因启动子CpG岛的异常甲基化,可能和该蛋白表达缺失的主要原因,是导致该基因失活的重要机制之一。     

P16 P15及VEGF蛋白在原发性卵巢癌中的表达及临床意义

  目的   探讨P16、P15及血管内皮生长因子(VEGF)在原发性卵巢癌中表达情况及其与临床病理特征的关系。   方法   采用免疫组织化学S-P法对170例原发性卵巢癌、60例交界性肿瘤及60例良性肿瘤组织进行P16、P15和VEGF蛋白检测。   结果   P16在卵巢癌的表达率为40.0%(68/170), 明显低于良性肿瘤组65.0%(39/60)和交界性肿瘤组56.7%(34/60)(P < 0.05);P15在卵巢癌组的阳性表达率为45.3%(77/170), 显著低于良性肿瘤组68.3%、交界性肿瘤组61.7%(37/60)(P < 0.05);VEGF在卵巢癌组的阳性表达率为71.2%(14/170), 明显高于良性肿瘤组45.0%(27/60)和交界性肿瘤组53.3%(32/60)(P < 0.05)。在卵巢癌组中, P16和P15表达呈正相关(r=0.294, P < 0.01), VEGF与P16和P15的表达呈负相关(r值分别为-0.461和-0.251, P < 0.01)。三者表达强度与肿瘤分化程度、临床分期、淋巴结转移有显著相关性, 肿瘤分化越低、临床分期越高、淋巴结转移者P16、P15阳性表达率越低(P < 0.05), VEGF阳性表达率越高(P < 0.05)。P16和P15的表达与有无脉管瘤栓无关, VEGF在有脉管瘤栓组的表达高于无脉管瘤栓组。   结论   P16和P15的低表达与VEGF蛋白高表达在卵巢癌的发展过程中可能起协同作用, 共同促进卵巢癌的恶性发展进程。      

PCNA及bcl-2与caspase-3在卵巢上皮性交界性肿瘤中的表达及意义

目的:探讨增殖细胞核抗原(PCNA)、bcl-2与caspase-3在卵巢上皮性交界性肿瘤中的表达及临床意义.方法:选取天津医科大学附属肿瘤医院病理科存档的卵巢上皮性交界性肿瘤40例,采用免疫组化SP法检测PCNA、bcl-2与caspase-3在肿瘤组织中的表达,并与良性、恶性肿瘤进行比较.结果:在卵巢交界性肿瘤中1)PCNA阳性率为72.5%,明显高于良性肿瘤(47.6%),低于恶性肿瘤(89.6%,P＜0.05);bcl-2与caspase-3的阳性率为60.0%和72.5%,而良性与恶性肿瘤分别为61.9%和76.2%、86.2%和44.8%,二者在恶性肿瘤中的表达与良性、交界性有显著差异(P＜0.05).2)PCNA与bcl-2的表达存在相关性,其协同表达率为52.5%,与良性(28.6%)、恶性肿瘤(75.9%),存在显著性差异(P＜0.05);PCNA、bcl-2与caspase-3的协同表达率为72.7%,良性与交界性肿瘤明显高于恶性肿瘤(P＜0.05).3)仅bcl-2与组织学类型有关,浆液性肿瘤的阳性率明显高于粘液性(P＜0.01);PCNA、caspase-3与临床病理参数无关.结论:PCNA与bcl-2任一高表达尤其协同表达,并伴caspase-3低表达是卵巢交界性肿瘤恶性潜能增加的标志,应密切随访.     

卵巢上皮性囊腺性肿瘤组织中C-erbB-2、PCNA和p53蛋白的表达及临床病理学意义

目的 :探讨原癌基因C erbB 2、增殖细胞核抗原 (proliferatingcellnuclearantigen ,PCNA)、抑癌基因p5 3在卵巢上皮性囊腺性肿瘤组织中的表达及其临床病理学意义。方法 :应用抗生蛋白链菌素标记法 (LSAB)和图象分析系统方法检测卵巢上皮性囊腺性肿瘤组织中 (其中 61例良性肿瘤、19例交界性肿瘤、4 4例恶性肿瘤 )C erbB 2、PCNA及p5 3蛋白的表达。结果 :1)C erbB 2、PCNA、p5 3三指标在囊腺瘤、交界性囊腺瘤、囊腺癌中阳性表达率均呈梯度升高 ,差异有极显著性 (P <0 0 0 1)。其中PCNA与p5 3在浆液性囊腺癌组织中的表达显著高于交界性肿瘤及黏液囊腺癌组织 (P <0 0 5 )。 2 )C erbB 2、PCNA和p5 3在囊腺瘤组织中的阳性细胞平均积分光密度值 (染色强度 )均显著低于交界性瘤和恶性肿瘤 ,且差异有极显著性 (P <0 0 0 1)。 3)p5 3蛋白表达与囊腺癌临床分期、组织学分级有相关性 (P <0 0 5 )。 4 )p5 3+PNCA和C erbB 2 +PCNA +p5 3联合表达率在交界性囊腺瘤与囊腺癌之间差异有显著性 (P <0 0 1)。结论 :C erbB 2、PCNA和p5 3蛋白的高表达与囊腺癌的发生有密切关系 ,可作为卵巢上皮性囊腺性肿瘤恶性化的分子标志。PCNA和p5 3蛋白的免疫组化检测可成为卵巢上皮性囊腺性肿瘤鉴别诊断的客观辅助指标 ,并为其诊     

AEG-1和MMP-9在上皮性卵巢癌组织中的表达及其临床相关性和病理特征

目的研究星形胶质细胞上调基因-1(AEG-1)和基质金属蛋白酶-9(MMP-9)在上皮性卵巢组织中的表达情况、病理特征及其临床意义,为卵巢恶性肿瘤的发病原因、转移机制提供一定的理论依据。方法 本研究主要通过免疫组化SP法检测病变卵巢组织,其中包括19例上皮性卵巢良性肿瘤、25例上皮性卵巢交界性肿瘤和112例上皮性卵巢恶性肿瘤中AEG-1和MMP-9的表达情况,进一步分析上皮性卵巢病变组织的相关临床和病理特征与AEG-1和MMP-9阳性表达率之间的关系。结果 在卵巢癌和卵巢交界性肿瘤中AEG-1和MMP-9的阳性表达率要显著高于卵巢良性肿瘤(P＜0.01)。其中AEG-1在上皮性卵巢肿瘤组织中的阳性表达率与患者的年龄和病理类型无统计学差异(P＞0.05),而与组织分级、临床分期、淋巴结转移等有统计学差异(P＜0.05),其中卵巢肿瘤组织的分化程度低、分期晚和淋巴结转移者,AEG-1和MMP-9阳性表达率高。在卵巢恶性肿瘤中,AEG-1与MMP-9阳性表达呈显著正相关。结论 AEG-1和MMP-9在上皮性卵巢癌的发生、发展中起重要的作用,可作为判断卵巢癌恶性程度、病情进展的重要指标,联合检测用于指导临床诊断有重要的意义。     

GLUT-1和DNA-PKcs在卵巢浆液性肿瘤组织中的表达及其意义

背景与目的:已知肿瘤细胞生长所需能量是通过葡萄糖转运体蛋白1(glucose transporter protein 1,GLUT-1)完成的葡萄糖代谢来提供的.另外,参与基因损伤修复的催化亚单位--DNA蛋白激酶(DNA-dependent protein kinase catalytic subunit,DNA-PKcs)在肿瘤形成中也起着非常重要的作用.本研究旨在探讨GLUT-1和DNA-PKcs在卵巢浆液性肿瘤组织中的表达及其与肿瘤生物学行为的关系和意义.方法:免疫组化方法检测80例卵巢浆液性肿瘤组织中GLUT-1、DNA-PKcs的表达,分析其异常表达与临床病理参数之间的相关性.以正常卵巢组织20例为对照.结果:正常卵巢组织GLUT-1表达全阴性,DNA-PKcs表达全阳性.GLUT-1在良性、交界性、恶性卵巢浆液性肿瘤中的表达呈增高的趋势,与卵巢浆液性肿瘤的发生发展呈正相关(rs=0.943,P＜0.01);在恶性肿瘤中的阳性率(100%)明显高于交界性(55%).DNA-PKcs在良性、交界性和恶性卵巢浆液性肿瘤中的阳性率分别为95%、90%、60%,差异有统计学意义(P＜0.01).GLUT-1与DNA-PKcs的表达呈负相关(rs=-0.270,P＜0.01).GLUT-1表达与临床分期、腹腔种植、腹水、淋巴结转移均相关(P＜0.05);DNA-PKcs仅与临床分期和淋巴结转移相关(P＜0.05),与腹水、腹腔种植无关(P＞0.05).结论:GLUT-1的异常表达和DNA-PKcs的丢失与卵巢浆液性肿瘤恶变相关.     

Expression of Vascular Endothelial Growth Factor-C and Vascular Endothelial Growth Factor Receptor-3 in Ovarian Epithelial Tumors

Objective： To explore the role of vascular endothelial growth factor-C （VEGF-C） in the process of angiogenesis, lymphangiogenesis and lymphatic metastasis in epithelial ovarian tumors. Methods： In situ hybridization and immunohistochemical staining for VEGF-C were performed in 30 epithelial ovarian carcinomas, 9 borderline tumors and 26 benign tumors. Endothelial cells were immunostained with anti-VEGFR-3 pAb and anti-CD31 mAb, and VEGFR-3 positive vessels and microvessel density （MVD） were assessed by image analysis. Results： VEGF-C mRNA and protein expression were detected in cytoplasm of carcinoma cells. VEGF-C mRNA and protein expression in ovarian epithelial carcinomas were significantly higher than those in borderline tumors and benign tumors （P〈0.05 or P〈0.01）. In ovarian epithelial carcinomas, VEGF-C protein expression, VEGFR-3 positive vessels and MVD were significantly higher in the cases of clinical stage Ⅲ-Ⅳ and with lymph node metastasis than those of clinical stage Ⅰ-Ⅱ and without lymph node metastasis respectively （P〈0.05 or P〈0.01）. VEGFR-3 positive vessels and MVD were significantly higher in VEGF-C protein positive tumors than negative tumors （P〈0.05）. VEGFR-3 positive vessels was significantly correlated with MVD（P〈0.01）. Conclusion： VEGF-C might play a role in lymphatic metastasis via lymphangiogenesis and angiogenesis in epithelial ovarian tumors, and VBEGF-C could be used as a biologic marker of metastasis in ovarian epithelial tumors.     

Expression and correlation of Lewis y antigen and TGF-β1 in ovarian epithelial carcinoma

Lewis y is a difucosylated oligosaccharide carried by glycoconjugates on the cell surface. Elevation of Lewis y is frequently observed in epithelial-derived cancers. This study aimed to detect the expression and clinical significance of the Lewis y antigen and TGF-β1 (transforming growth factor β1) in ovarian epithelial tumors, and to evaluate the correlation between them. Immunohistochemical staining was used to detect the expression of Lewis y antigen and TGF-β1 in 60 cases of ovarian epithelial malignant tumors, 20 cases of borderline ovary tumors, 20 cases of benign ovary tumors and 10 cases of normal ovarian tissues. An immunofluorescence double labeling method was also used to detect the correlation between Lewis y antigen and TGF-β1. The positive rates of Lewis y antigen in ovarian epithelial cancer tissues was 88.33%, significantly higher compared to those of borderline ovarian tumors (60.00%) (P<0.05), benign ovarian tumors (35.00%) (P<0.01) and normal ovarian tissues (0%) (P<0.01). Its expression was not associated with clinical parameters; the positive rates of TGF-β1 in ovarian epithelial cancers were 78.33%, significantly higher compared to those of benign ovarian tumors (65.00%) (P<0.05) and normal ovarian tissues (40.00%) (P<0.05); the positive rates of the TGF-β1 and Lewis y were not associated with metastasis of lymph nodes and histological types, differentiation degree and clinical stage (P>0.05). Expression of Lewis y antigen and TGF-β1 was significantly positively associated with epithelial carcinoma. Close correlation between Lewis y, TGF-β1 and ovarian cancer was observed. Altered expression of Lewis y antigen may cause changes in TGF-β1 expression. Lewis y can increase the growth of ovarian cancer cells and the invasion ability by promoting TGF-β1 abnormal expression and by promoting angiogenesis and a change in its signal transduction pathway. This study provides theoretical evidence for the development of ovarian cancer biological treatments.     

Abnormalities of chromosome 8, APC and beta-catenin genes in aggressive fibromatosis

OBJECTIVE: To explore the role of abnormalities of chromosome 8, APC and beta-catenin genes in tumorigenesis of aggressive fibromatosis. METHODS: Trisomy 8 was detected by interphase fluorescence in situ hybridization (FISH). The APC gene and beta-catenin gene mutations were detected by denaturing high performance liquid chromatography (DHPLC) and direct sequence analysis after the PCR transition. RESULTS: The rate of trisomy 8 in recurrent tumors (62.5%, 5/8) was significantly higher than that in the primary tumors (8.3%, 1/12). Somatic substitution of APC gene was found in 18 of 69 (26.1%) aggressive fibrometases. Somatic transition of beta-catenin gene was detected in 13 of 69 (18.8%) and mutation at codon 41 in exon 3 involving threonine residues implicated in the degradation of beta-catenin. The abnormal expression of beta-catenin had no significant correlation with the mutation of APC or beta-catenin gene. The group with positively expressed beta-catenin protein showed a significant higher c-myc protein expression than those without (P = 0.001). The Ki-67 index was extremely low in all the lesions. The apoptosis index (AI) of the groups with positively expressed c-myc and cyclin D1 showed significantly lower AI than those without. CONCLUSION: Trisomy 8 may serve as a useful predictor of recurrence in aggressive fibromatosis. There are somatic mutations of the APC and beta-catenin genes in the aggressive fibromatosis, and there are abnormalities in the Wnt signaling pathway. These abnormalities may result in the aberrances of cell proliferation and apoptosis, which are likely to be import factors in the tumorigenesis.     

上皮性卵巢组织G3BP和OPN表达及相关性研究

目的 卵巢癌是妇科肿瘤中死亡率居首的常见恶性肿瘤,寻找新的生物学标志物以提高卵巢癌诊治的敏感性与特异性至关重要.本研究探讨GTP酶激活蛋白SH3功能区结合蛋白(Ras-GTPase-activating protein SH3 domainbinding protein,G3BP)和骨桥蛋白(osteopontin,OPN)在上皮性卵巢组织中的表达、意义及其表达的相关性,为卵巢肿瘤的临床诊断及治疗提供依据.方法 采用免疫组织化学方法检测G3BP和OPN在来源于中国医科大学盛京医院2009-10-01-2015-05-31的11例正常卵巢组织、20例卵巢上皮性良性肿瘤组织、31例卵巢上皮性交界性肿瘤组织及60例卵巢上皮性恶性肿瘤组织中的表达情况;并对二者表达的相关性进行统计分析.结果 G3BP在正常卵巢上皮组织、卵巢上皮性良性肿瘤组织、卵巢上皮性交界性肿瘤组织及卵巢上皮性恶性肿瘤组织中的表达呈递增趋势,其中上皮性良性肿瘤组织与正常卵巢上皮组织比较,x2=66.38,P＜0.01;上皮性交界性肿瘤组织与上皮性良性肿瘤组织比较,x2 =41.183,P＜0.01;上皮性恶性肿瘤组织与上皮性交界性肿瘤组织比较,x2=73.342,P＜0.01.OPN在正常卵巢上皮组织、卵巢上皮性良性肿瘤组织、卵巢上皮性交界性肿瘤组织及卵巢上皮性恶性肿瘤组织中的表达呈递增趋势,其中上皮性良性肿瘤组织与正常卵巢上皮组织比较,x2=60.005,P＜0.01;上皮性交界性肿瘤组织与上皮性良性肿瘤组织比较,x2 =43.844,P＜0.01;上皮性恶性肿瘤组织与上皮性交界性肿瘤组织比较,x2=73.429,P＜0.01.G3BP与OPN在卵巢上皮性恶性肿瘤组织中的表达具有正相关性,r=0.351,P＜0.01.结论G3BP和OPN表达升高与上皮性卵巢癌的发生发展有密切关系,且二者可能存在协同作用.     

脆性组氨酸三联体和Ki67蛋白在卵巢上皮性肿瘤组织中的表达及其临床意义

目的:探讨脆性组氨酸三联体(fragile histidine triad,FHIT)和Ki67蛋白在卵巢上皮性肿瘤组织中的表达及临床意义。方法:采用免疫组化方法检测40例卵巢原发性上皮性癌、20例卵巢交界性肿瘤和20例卵巢良性腺瘤组织中FHIT和Ki67蛋白的表达。结果:卵巢上皮性癌中FHIT蛋白阳性率为65%(26/40),明显低于交界性肿瘤95%(19/20)和良性肿瘤100%(20/20),P值分别为0·012和0·002;而Ki67蛋白阳性率为65%(26/40),明显高于交界性肿瘤0(0/20)、良性肿瘤0(0/20),P值均为0·000。卵巢癌中浆液性癌FHIT蛋白表达率低于非浆液性癌(P=0.000),FHIT蛋白表达率与细胞分化程度(P=0·007)、FIGO分期(P=0·048)及淋巴结转移(P=0·018)相关,与术后残留灶大小(P=0·347)无关。卵巢癌中Ki67蛋白表达率与FIGO分期(P=0·007)、细胞分化程度(P=0·048)及淋巴结转移情况(P=0·041)相关,与病理类型(P=0·273)及残留灶大小(P=0·219)无关。卵巢癌中FHIT蛋白表达与Ki67蛋白的表达呈负相关,rs=-0·543,P=0·015。结论:FHIT基因表达下降,可能与卵巢癌发生和发展有关;联合检测FHIT和Ki67表达情况可能有助于判断卵巢癌患者的预后。     

乳腺癌组织中E-cadherin、β-catenin及cyclin D1表达的相关性研究

背景与目的上皮性钙粘素(E-cadherin)通过连接素(catenins)与细胞骨架相连介导细胞同质粘附反应,β-catenin除与E-cadherin结合介导细胞粘附反应外,还作为Wnt信号转导通路的重要成分与肿瘤发生密切相关。本研究通过检测乳腺癌组织中E-cadherin、β-catenin及cyclinD1的表达,探讨E-cadherin、β-catenin在乳腺癌发生、发展中的意义。方法采用免疫组织化学SP法检测60例乳腺癌组织中E-cadherin、β-catenin、cyclinD1的表达。结果乳腺癌组织中有29例(48.3%)E-cadherin、18例(30.0%)β-catenin正常表达,28例(46.7%)cyclinD1过度表达。E-cadherin正常表达病例中,31.0%(9/29)的病例呈现cyclinD1过度表达,而E-cadherin异常表达病例中,61.3%(19/31)的病例呈现cyclinD1过度表达,E-cadherin异常表达与cyclinD1的过度表达有显著的正相关性(rs=0.303,P<0.05)。有42例癌组织表现出β-catenin的异常表达,其中57.1%(24/42)的病例出现cyclinD1的过度表达,而β-catenin正常膜表达病例中,22.2%(4/18)的病例呈现cyclinD1的过度表达。β-catenin的异常表达与cyclinD1的过度表达有显著的正相关性(rs=0.321,P<0.05)。结论E-cadherin和β-catenin的异常表达可能通过促使或激活cyclinD1的过度表达导致乳腺癌的发生和发展。