乳腺癌中β-catenin的表达及临床意义

目的探讨乳腺浸润性癌组织中β-catenin的表达及临床意义。方法收集安徽医科大学附属巢湖医院2018年~2020年存档的乳腺组织标本149例,包括正常乳腺组织30例,乳腺导管内癌33例,乳腺浸润性癌86例,行免疫组化检测不同乳腺组织中β-catenin的表达,并分析其与乳腺浸润性癌临床病理特征的关系。结果β-catenin蛋白表达主要定位于正常乳腺组织细胞胞膜,而在乳腺浸润性癌细胞胞膜表达减少,主要在胞质及胞核中异常表达。86例乳腺浸润性癌组织中β-catenin异常表达率为66.2%,高于正常乳腺组织(6.7%)、乳腺导管内癌(24.2%),差异有统计学意义(P<0.05)。乳腺浸润性癌病理分级Ⅰ级组β-catenin的阳性率低于病理分级Ⅱ、Ⅲ级组(P<0.05);在临床分期、有无淋巴结转移、E-cadherin有无异常表达及HER-2有无扩增组β-catenin异常表达率差异有统计学意义(P<0.05);在患者年龄、肿块大小及Ki-67增殖指数组间差异无统计学意义(P>0.05)。结论乳腺浸润性癌组织中β-catenin异常表达率高,且与病理分级、临床分期、有无淋巴结转移、E-cadherin有无异常表达及HER-2扩增方面存在关联。     

E-cadherin阴性乳腺小管小叶癌5例临床病理分析

目的探讨E-cadherin阴性乳腺小管小叶癌的临床病理学特征、诊断及鉴别诊断。方法收集5例乳腺小管小叶癌,采用免疫组化EnVision两步法检测E-cadherin、p120、β-catenin、ER、PR、HER-2和Ki-67的表达,并结合临床病理学信息进行回顾性分析。结果浸润性小叶癌占同期浸润性癌的3.4%(143/4 175),其中5例为乳腺小管小叶癌(3.5%,5/143),其组织学形态均形成管腔样的结构,管腔较小、由单层腺上皮围绕而成,癌细胞间的黏附性较差,可围绕正常导管呈靶环样排列,可与浸润性小叶癌和浸润性导管癌共存;免疫组化染色显示E-cadherin缺失,p120呈胞质阳性或胞质胞膜阳性,β-catenin缺失或胞质弱阳性,ER均阳性,PR为50%阳性,HER-2评分为1+,Ki-67增殖指数均10%。结论 E-cadherin阴性的乳腺小管小叶癌形态类似E-cadherin阳性的乳腺小管小叶癌,但E-cadherin、p120、β-catenin的异常表达提示E-cadherin复合体缺陷,为特殊类型的小叶癌,其生物学行为仍需进一步分析。     

肝细胞肝癌中Wnt5a、β-catenin 和 E-cadherin蛋白的表达及临床意义

目的初步探讨Wnt5 a、β-catenin和E-cadherin的表达与肝细胞肝癌（HCC）发生、发展和转移的关系。方法采用免疫组化ABC及EnVision方法,检测30例HCC（包括10例尸检样本）癌旁、癌组织中Wnt5a、β-catenin和E-cadherin的表达,结合Ki-67进行统计学分析。结果对比于癌旁组织,83%（25/30）的HCC癌组织内Wnt5a蛋白低或缺失表达（P〈0.001）,其异常表达还相关于高的肿瘤分期（P=0.010）、高的Ki-67指数（P=0.013）,以及β-catenin（P=0.025）和E-cadherin（P=0.003）的膜下降表达。癌组织中β-catenin膜下降表达相关于E-cadherin的膜下降表达（P=0.047）。80%（24/30）HCC癌组织中E-cadherin膜下降表达,相关于高的肿瘤分期（P=0.048）、高的K i-67指数（P=0.042）和尸检组肿瘤转移的发生（P=0.033）。结论Wnt5a缺失表达是HCC进展中的频发事件,并相关于β-catenin和E-cadherin的异常表达。Wnt5a在HCC中发挥肿瘤抑制基因样的作用,该蛋白极可能是一个有用的HCC预后不良指标。     

结直肠癌中GRHL3、E-cadherin和Ki-67的表达及临床意义

目的探讨粒状头样3(Grainyhead-like 3,GRHL3)与E-cadherin和Ki-67在结直肠癌中的表达及临床意义。方法采用免疫组化SP法检测100例结直肠癌组织及30例癌旁正常组织中GRHL3、E-cadherin和Ki-67的表达,分析三者表达的相关性及与临床病理特征、预后的关系。结果结直肠癌组织中GRHL3和Ki-67阳性率(64.0%和60.0%)高于癌旁正常组织(30.0%和6.7%),E-cadherin阳性率(55.0%)低于癌旁正常组织(99.7%),差异均有统计学意义(P<0.05)。结直肠癌组织中GRHL3和Ki-67的表达与肿瘤大小密切相关,GRHL3和E-cadherin的表达与TNM分期、浸润深度及淋巴结转移密切相关,差异均有统计学意义(P<0.05);GRHL3与E-cadherin的表达呈负相关(χ²=6.674,P=0.010,rs=-0.260),与Ki-67的表达呈正相关(χ²=7.799,P=0.005,rs=0.281)。GRHL3和Ki-67阳性患者5年生存率低于阴性患者(P<0.001,P=0.017),E-cadherin阴性患者5年生存率低于阳性患者(P<0.001);多因素Cox回归分析显示,TNM分期Ⅲ+Ⅳ期、GRHL3阳性及E-cadherin阴性是影响结直肠癌患者预后的独立危险因素(P<0.05)。结论GRHL3在结直肠癌中高表达,且可能与E-cadherin和Ki-67之间存在一定相互作用,三者共同参与结直肠癌的发生发展和侵袭转移过程。     

乳腺癌不同分子亚型中Wnt/β-catenin信号传导通路的异常表达

目的检测Wnt信号通路的关键组分β-catenin蛋白在管腔A、管腔B、HER-2过表达、基底细胞样及未分类型(基底细胞样及未分类型统称为三阴型)乳腺癌中的表达及细胞内定位,及其与乳腺癌临床病理参数的关系。方法采用免疫组化Eli Vison两步法检测58例乳腺癌中β-catenin蛋白表达及细胞内定位。结果 (1)管腔A、管腔B、HER-2过表达、基底细胞样及未分类型乳腺癌中β-catenin胞质异常表达阳性率分别为21.1%、50%、60%、100%及60%(三阴型84.6%),差异有显著性(P<0.01)。β-catenin高胞质表达与基底细胞样及三阴型乳腺癌相关(P<0.05)。(2)β-catenin胞质异常表达与组织学分级相关(P<0.01),与淋巴结转移、肿瘤大小、患者年龄无关;与E-cadherin膜表达缺失、Ki-67及CK5/6表达呈正相关(P<0.05),与ER及PR表达呈负相关(P<0.01)。结论乳腺癌中Wnt信号通路的异常与组织学分级、Ki-67及CK5/6表达呈正相关,与ER、PR表达呈负相关。基底细胞样及三阴型分子亚型有更高频率的Wnt信号异常。β-catenin有可能成为基底细胞样及三阴型乳腺癌的治疗靶点。     

脊索瘤组织中C-Met和Ki-67表达及临床病理意义

目的探讨肝细胞生长因子受体(C-Met)和Ki-67在脊索瘤组织中表达的意义。方法回顾性分析51例经手术治疗的脊索瘤患者临床病理资料,并用免疫组化EnVision两步法检测C-Met和Ki-67在脊索瘤中的表达。结果 C-Met阳性表达定位于细胞质,在经典型脊索瘤(typical chordoma,TC)、软骨样型脊索瘤(chondroid chordoma,CC)、去分化型脊索瘤(dedifferen-tiated chordoma,DC)中阳性率分别为70.1%、58.3%、80%。C-Met的表达水平与肿瘤的复发密切相关。Ki-67阳性表达定位于细胞核,所有病例中Ki-67增殖指数均不高(<20%)。生存分析Log-rank检验显示组织学分型、手术切除程度、C-Met和Ki-67表达水平对生存率有明显影响(P<0.05);多因素Cox回归分析显示Ki-67是影响患者生存率的独立性预后因素(P<0.05)。结论 C-Met和Ki-67可作为脊索瘤患者预后评估的有效指标。C-Met高表达提示患者存在高复发风险,且预后不良,临床需加强患者术后治疗及随访。Ki-67是影响患者预后的独立性因素,其增殖指数高(>5%),提示患者预后较差。     

硬化性肺细胞瘤临床病理学特征分析及其低度潜在恶性生物学行为

目的 分析硬化性肺细胞瘤(pulmonary sclerosing pneumocytoma, PSP)的临床病理学特征并探讨该肿瘤的低度潜在恶性生物学行为。方法 收集24例PSP的临床病理资料，行免疫组化染色及二代基因测序，结合文献分析PSP的临床病理特征及低度潜在恶性生物学行为。结果 24例PSP中，男女比为1∶5,平均年龄47岁。肿瘤最大径1～5.5 cm。病理形态为两种细胞：表面立方细胞和间质圆形细胞；四种结构：硬化区、出血区、实性区和乳头状区。免疫表型：24例PSP中，两种细胞TTF-1、EMA共同阳性，表面立方细胞CK(AE1/AE3)阳性，间质圆形细胞vimentin阳性，Syn及CgA部分阳性，Ki-67增殖指数2%～3%;23例表面上皮细胞β-catenin、E-cadherin均为膜阳性，而间质圆形细胞胞膜、胞质弱阳性，p53均为野生型；1例表面立方细胞β-catenin核阳性、间质圆形细胞阴性，而表面立方细胞E-cadherin膜阳性，间质圆形细胞胞膜、胞质弱阳性，p53为突变型。基因测序：AKT1 p. E17K(c.49G>A)杂合性点突变2例，其中1例...     

β-干扰素抑制裸鼠荷人肝癌切除术后复发和生长的实验研究

目的:研究β-干扰素(INF-β)对肝癌根治性切除后复发和生长的抑制作用。 方法:将人肝癌组织植入25只BALB/c裸鼠肝脏，建立人肝癌原位移植瘤模型。第10 d完整切除荷瘤后，随机分为3组：A组对照组（生理盐水皮下注射）；B组小剂量实验组（INF-β 3×105U/d皮下注射）;C组大剂量实验组（INF-β 6×105U/d皮下注射）。连续注射35 d后处死裸鼠，观察肿瘤复发情况，测量肿瘤大小和体积；免疫组织化学法检测肿瘤增殖核抗原(Ki-67)、诱导型一氧化氮合酶(iNOS)和半胱氨酸天冬氨酸蛋白酶-3(caspase-3)表达。 结果:A组肿瘤复发率为100%，B组为87.5%，C组为77.8%，3组比较无显著差异（P>0.05）。B组和C组抑瘤率分别为73.6%和94.3%，与A组比较差异显著（P<0.05）。B组和C组肿瘤组织iNOS、Ki-67的表达明显低于A组，而caspase3的表达明显高于A组（P<0.05）。 结论:β-干扰素可有效抑制肝癌切除术后复发肿瘤的生长。大剂量β-干扰素较小剂量对肝癌的生长抑制作用更强，其机制可能与肿瘤组织内iNOS、Ki-67和caspase3的表达有关。     

p53,Ki-67及E-钙黏蛋白在三阴性乳腺癌中的表达及预后

目的:探讨p53,Ki-67及E-钙黏蛋白(E-cadherin)在三阴性乳腺癌(triple negative breast cancer,TNBC)组织中的表达及预后的关系.方法:采用免疫组织化学法检测52例TNBC和52例非三阴性乳腺癌(non-triple-negative breast cancer,NTNBC)组织中p53,Ki-67及E-cadherin表达情况,观察3个指标与TNBC患者临床病理学特征及预后的关系.结果:TNBC组织中p53,Ki-67及E-cadherin的阳性表达率分别为67.3％,80.8％,26.9％;而在NTNBC组织中为44.2％,61.5％,48.1％(均P＜0.05).在TNBC组织中,p53表达阳性与肿瘤大小、TNM分期及组织学分级有关(均P＜0.05);Ki-67表达阳性与TNM分期、淋巴结转移有关(均P＜0.05);E-cadherin表达阳性与肿瘤大小、TNM分期、淋巴结转移有关(均P＜0.05).在TNBC患者中,p53,Ki-67及E-cadherin表达阳性者与阴性者总体生存率(overall survival,OS)的差异均有统计学意义(P＜0.05).Cox回归分析多因素显示:淋巴结转移、p53、Ki-67及E-cadherin表达是影响TNBC患者总体生存率的独立预后因素(均P＜0.05).结论:TNBC组织中,p53、Ki-67高表达,其表达阳性者预后差,E-cadherin低表达,其表达阳性者预后良好.联合检测p53、Ki-67及E-cadherin表达可为TNBC患者的治疗提供新靶点.     

结直肠癌中FOXO3a表达及其与β-catenin、E-cadherin关系

目的探讨结直肠癌组织中FOXO3a的表达及其与Wnt信号通路中心蛋白β-catenin和该通路间接调节因子E-cadherin的关系。方法应用免疫组化SP法检测112例结直肠癌组织和103例正常肠黏膜组织中FOXO3a、β-catenin及E-cadherin蛋白的表达,分析三者表达与临床病理特征的关系以及FOXO3a与β-catenin、E-cadherin表达的相关性。结果 (1)FOXO3a在结直肠癌组织中的阳性率(57.14%)较正常肠黏膜组织(93.20%)明显降低(P<0.001),β-catenin在结直肠癌组织中的异常表达率(73.21%)较正常肠黏膜组织(2.91%)明显升高(P<0.001),E-cadherin在结直肠癌组织中的阳性率(70.54%)较正常肠黏膜组织(98.06%)明显降低(P<0.001)。(2)结直肠癌组织中FOXO3a、E-cadherin低表达以及β-catenin异常表达与肿瘤深层浸润、差分化、淋巴结转移和TNM高分期密切相关(P<0.05),与患者性别、年龄、肿瘤大小均无关(P>0.05)。(3)结直肠癌组织中FOXO3a的阳性表达与β-catenin的异常表达呈负相关(rs=-0.361,P<0.001),与E-cadherin的阳性表达呈正相关(rs=0.351,P<0.001)。结论 FOXO3a、E-cadherin表达降低与β-catenin异常表达可能在结直肠癌的发生、侵袭和转移过程中起重要作用,FOXO3a抑制结直肠癌发生、发展的作用机制可能与Wnt信号通路有关。     

Significance of E-cadherin, β-catenin, and vimentin expression as postoperative prognosis indicators in cervical squamous cell carcinoma

Although early-stage cervical cancer can be treated by surgery, distant metastases can be life threatening. It has been a challenge to identify reliable biomarkers as indicators of metastasis or poor prognosis. We investigated the prognostic impact of vimentin, E-cadherin, and β-catenin expression measured by immunohistochemistry staining in samples from 135 patients with clinical stage I or II cervical squamous cell cancer and in normal cervical tissues from 55 patients who underwent hysterectomy for reasons other than neoplasia. Down-regulation of E-cadherin and β-catenin was positively related to histologic differentiation (P < .001), metastasis (P < .001), and recurrence (P < .001), whereas up-regulation of vimentin was inversely related to histologic differentiation, metastasis, and recurrence (P < .0001, .020, and .000, respectively). In univariate Cox regression analysis, high expression of E-cadherin or β-catenin was a positive prognostic indicator for overall survival (P < .001 and P < .001, respectively), whereas high expression of vimentin was a negative indicator (P < .001). In multivariate Cox regression analysis, high expression of E-cadherin was a positive prognostic indicator for overall survival (P = .002), whereas high expression of vimentin was a negative indicator (P = .034). The expression of E-cadherin and vimentin was associated with survival, and the 2 proteins were independent prognostic factors in univariate and multivariate analyses. The combination of a decrease of E-cadherin and an increase in vimentin might be a valuable survival indictor in cervical squamous cell cancer.     

Expression of proteins associated with hypoxia and Wnt pathway activation is of prognostic significance in hepatocellular carcinoma

In the development and progression of hepatocellular carcinoma, tumor hypoxia plays an important role, as does activation of the Wnt pathway. The aim of this study was to characterize the expression and interrelationship between hypoxia and Wnt-pathway-associated proteins as prognostic factors for hepatocellular carcinoma. Expression of HIF-1α, CA-IX, E-cadherin, β-catenin, and Ki-67 was assessed by immunohistochemistry in 179 primary hepatocellular carcinoma cases. Univariate and multivariate analyses were performed to assess the relationship between the clinicopathological factors, protein expression, overall survival (OS), and recurrence-free survival (RFS). By univariate analysis, tumor stage, size, satellitosis, and vascular invasion were confirmed as prognostic factors for worse OS and RFS. High expression of HIF-1α, CA-IX, β-catenin, Ki-67, and E-cadherin was observed in 60, 15, 64, 8, and 64 % of tumors, respectively, and this was significantly associated with poor OS. CA-IX, HIF-1α, and E-cadherin were independent predictors of poor prognosis. We stratified 169 patients into four groups according to the expression level of hypoxia and Wnt pathway markers. The group with high expression of both hypoxia and Wnt-pathway-associated proteins showed worst OS. The poor survival of this group was also significant in patients with early stage disease and tumor size of less than 5 cm (p?<?0.05). We identified a subgroup of hepatocellular carcinoma patients with high expression of both hypoxia and Wnt pathway proteins and found this predictive of poor survival. The therapeutic options for this group might need to be revisited.     

p21WAF1 expression in invasive breast cancer and its association with p53, AP-2, cell proliferation,and prognosis

AIMS: To evaluate the expression and prognostic relevance of p21(WAF1) in breast cancer and to investigate its association with p53, activator protein 2 (AP-2), and cell proliferation (as assessed by Ki-67 expression). METHODS: p21(WAF1) expression was analysed immunohistochemically in a large prospective, consecutive series of 420 patients with breast cancer diagnosed and treated between 1990 and 1995 at Kuopio University Hospital, Kuopio, Finland. Inter-relations between p21(WAF1) expression and p53, AP-2, and Ki-67 were evaluated. The expression of p21(WAF1) was also compared with clinicopathological parameters and the patients' survival. RESULTS: In general, nuclear p21(WAF1) expression was low in carcinomas (median, 2.5%; range, 0-70%). Expression was lowest in lobular carcinomas (chi(2) = 7.4; p = 0.025). p21(WAF1) positive tumours were more often p53 positive (chi(2) = 4.2; p = 0.041) but expression of p21(WAF1) did not correlate with AP-2 expression or Ki-67 in the whole patient group. In addition, the combined expression of p21 and p53 was not associated with AP-2 expression. High nuclear p21(WAF1) positivity (n = 160; 38%) was associated with poor differentiation (chi(2) = 8.1; p = 0.017). In the univariate analyses, p21(WAF1) expression had no prognostic value for predicting breast cancer related survival (BCRS) or recurrence free survival (RFS) in the whole patient group or in the subgroups investigated. However, in postmenopausal patients with lymph node metastases, and oestrogen receptor (ER) and/or progesterone receptor (PR) positive tumours, high p21(WAF1) expression predicted response to adjuvant hormonal treatment with antioestrogens. In the univariate analysis, the significant factors for predicting BCRS were Ki-67 expression, stage, lymph node status, histological grade, ER and PR status, and those for RFS were Ki-67 expression, stage, and lymph node status. In the multivariate analysis, the independent predictors of shorter BCRS were high cell proliferation activity measured by Ki-67 expression (p < 0.001), advanced stage (p < 0.001), and poor differentiation (p = 0.048). Shorter RFS was independently predicted by high cell proliferative activity (p < 0.001) and advanced stage (p < 0.001). CONCLUSIONS: The regulation of p21(WAF1) seems to occur independently of p53 or AP-2 and analysing p21(WAF1) expression provided no prognostic information for patients with breast cancer.     

Combined cancer testis antigens enhanced prediction accuracy for prognosis of patients with hepatocellular carcinoma

Cancer testis antigens (CTAs) are selectively expressed in malignant cells and can serve as ideal targets for immunotherapy. We investigated the expressions of MAGE-A3, MAGE-A4, MAGE-C2 and NY-ESO-1 to determine if combinatorial expressions of CTAs might be as potential prognostic markers for patients with hepatocellular carcinoma (HCC). In tumor tissues of 142 HCC patients, the mRNA expressions of MAGE-A3, MAGE-A4, MAGE-C2 and NY-ESO-1 were 78.9%, 33.8%, 74.6% and 14.1% respectively. Furthermore, the expressions of MAGE-A3, MAGE-A4 and combination of MAGE-A3, MAGE-A4 and NY-ESO-1 (CTAs-A3/A4/NY) showed positive correlations with serum AFP, tumor stages and Ki-67 (P < 0.05). In addition, mRNA expressions of CTAs were significantly consistent with protein expressions of CTAs by immunohistochemistry (P > 0.05). Receiver operating characteristic curves (ROC) analysis showed that CTAs-A3/A4/NY had larger areas under ROC curve (0.768), specificity (99.1%), Youden’s index (44.6), positive predictive value (90.9%) and negative predictive value (89.9%) for predicting HCC recurrence than other CTAs. Moreover, the combinatorial expression of CTAs-A3/A4/NY was significantly associated with HCC recurrence by Kaplan-Meier analysis (HR = 69.36, P < 0.01) and multivariate Cox analysis (RR = 17.11, P < 0.01). The combinatorial expression of CTAs-A3/A4/NY mRNA promotes the predictive accuracy of HCC recurrence and itself may be a potential target for immunotherapy of HCC as well.     

The significance of immunohistochemical expression of Ki-67, p53, p21, and p16 in meningiomas tissue arrays

Although histologic grading of meningiomas has prognostic and clinical implications, it is difficult in some cases to predict the outcome of patients. There have been several efforts to evaluate the use of different immunohistochemical markers for predicting meningioma prognosis. We analyzed the immunohistochemical expression of Ki-67, p53, p21, p16, and PTEN proteins in 130 meningiomas (64 benign, 39 atypical, and 27 malignant meningiomas) using tissue microarray. The tumors were graded according to the World Health Organization classification. There was a statistically significant correlation between the expression of Ki-67, p53, p21, p16, and the grade of meningiomas (p0.001). By ordinal logistic regression, p53 and Ki-67 were significantly associated with grade, and an increase of 1% in the labeling index of these markers resulted in an increase in the risk of raising the grade by 2.17 and 1.49, respectively. Histological grade, p53, Ki-67 labeling indices, and overexpression of p16 were strongly associated with decreased event-free survival in univariate analysis. In contrast, multivariate analysis revealed that only tumor grade is an independent factor for predicting meningioma recurrence. We conclude that the Ki-67 and p53 labeling indices are useful additional tools in discriminating atypical from benign or anaplastic meningiomas, especially in histological borderline cases.     

Lymphangiogenesis in Breast Cancer Correlates with Matrix Stiffness on Shear-Wave Elastography

PurposeTo correlate tumor stiffness and lymphangiogenesis in breast cancer and to find its clinical implications.ResultsHigher elasticity value was associated with invasive size of tumor, microlymphatic density, histologic grade 3, absence of extensive intraductal component, presence of axillary lymph node metastasis, and Ki-67 labeling index (LI) in univariate regression analysis, and associated with Ki-67 LI and axillary lymph node metastasis in multivariate regression analysis. Microlymphatic density was associated histologic grade 3, mean elasticity value, and Ki-67 LI in univariate regression analysis. In multivariate regression analysis, microlymphatic density was correlated with mean elasticity value.ConclusionIn breast cancer, tumor stiffness correlates with lymphangiogenesis and poor prognostic factors.     

E-cadherin的表达与肝细胞癌侵袭和转移的关系

目的研究上皮性钙黏蛋白（E-cadherin）在人肝细胞癌（HCC）中的表达情况,探讨其与肝癌的相关性。方法选择56例有完整随访资料的肝细胞癌及相应癌旁组织标本、20例正常肝组织标本,用RT-PCR方法检测E-cadherinmRNA的表达;用免疫组织化学方法检测E-cadherin的表达。结果①E-cadherin在肝细胞癌组织中的表达显著低于癌旁组织和正常组织（P〈0．05）,而在癌旁组织和正常组织中的表达无差异;②E-cadherin在肝癌组织中的表达与术后复发时间呈正相关（P〈0．05）,与病理分期呈负相关（P〈0．05）;③癌组织中E-cadherin表达与肝外转移呈负相关（P〈0．05）;④癌旁组织中E-cadherin表达与术后复发时间呈正相关（P〈0．05）。结论E-cadherin表达缺失或下调与肝癌的分化程度、侵袭转移能力和复发倾向相关,对肝癌临床转归的评估有一定指导意义。     

β-连环素在结肠腺癌中的异常表达及其与预后的关系

目的:检测β-连环素(β-catenin)在结肠腺癌组织中的异常表达情况,分析其临床意义及与预后的关系。方法:收集2000年6月至2004年6月实施根治性切除、临床资料及随访资料完整的52例结肠腺癌患者及20例癌旁正常结肠组织的石蜡组织切片,采用免疫组织化学方法检测β-catenin的表达情况,并分析其与临床因素和预后的关系。结果:20例正常癌旁组织中β-catenin均呈正常表达。52例结肠腺癌组织中β-catenin的异常表达率为71%,β-catenin的异常表达与患者的性别、年龄、肿瘤分化程度及血癌胚抗原(CEA)异常无关(P0.05),与淋巴结转移及临床分期相关(P0.05)。表达正常组患者术后生存期高于表达异常组患者,两者比较显著差异(P0.05)。结论:β-catenin的异常表达与结肠腺癌淋巴结转移及肿瘤的临床分期有关,其异常表达可能是结肠癌预后不良的重要因素,可作为临床判断结肠腺癌患者预后的指标之一。