TP免疫细胞化学对浆膜腔积液腺癌细胞及反应性间皮细胞的鉴别诊断

目的 探讨薄层细胞涂片法(TP)免疫细胞化学对浆膜腔积液中腺癌细胞及反应性间皮细胞鉴别诊断的应用价值.方法 对65例浆膜腔积液行常规HE染色,其中包括胸腔积液26例,腹水33例和心包积液6例.全部采用TP免疫细胞化学检测癌胚抗原(CEA)、上皮抗原(EA)、间皮细胞抗原(MC)和钙结合蛋白(Ca1)抗原的表达.结果 42例腺癌中90.5%(38/42)CEA表达阳性,95.2%(40/42)EA表达阳性,4.8%(2/42)MC表达阳性,4.8%(2/42)Cal表达阳性.在23例反应性间皮细胞中,反应性间皮细胞CEA和EA全部呈阴性表达,91.3%(21/23)MC表达阳性,87.0%(20/23)Cal表达阳性.CEA和EA在腺癌细胞中特异性为100.0%.MC和Cal在良性反应性间皮细胞中特异性为95.2%.结论 通过TP免疫细胞化学方法,选择性的联合使用4种抗体(CEA、EA、MC、Cal)可以帮助对浆膜腔积液中腺癌细胞与反应性间皮细胞的鉴别诊断.     

联合检测E-cadherin、GEA及Calretinin在浆膜腔积液细胞学鉴别诊断中的意义

背景与目的:浆膜腔积液中转移性腺癌细胞、恶性上皮型间皮瘤细胞和反应性间皮细胞的形态有不少相似之处,有时仅凭形态学特征不能做出准确诊断.近年来免疫细胞化学在这方面得到较多应用,但国内报道仅局限于用CK、EMA、CEA、Vim和HBME-1几种抗体,而且不能较好地进行细胞学的鉴别诊断.本研究旨在探讨联合检测E-cadherin、CEA及calretinin在浆膜腔积液鉴别诊断中的应用价值.方法:选用浆膜腔积液标本共93例,其中胸水66例、腹水24例、心包积液3例.经组织学检查或结合临床资料证实的转移性腺癌55例、恶性上皮型间皮瘤6例、间皮细胞反应性增生32例.每例均制备HE染色的涂片和细胞块,并用细胞块切片作免疫细胞化学染色.结果:E-cadherin、CEA对诊断转移性腺癌的敏感性分别为85.5%(47/55)、78.2%(43/55),特异性分别为100%(38/38)、97.4%(37/38).E-cadherin 和CEA联合应用诊断浆膜腔积液转移性腺癌的阳性率为96.4%(53/55).Calretinin 对诊断间皮瘤和间皮细胞增生的敏感性和特异性分别为81.6%(31/38)和87.2%(48/55).结论:E-cadherin、CEA和calretinin是鉴别浆膜腔积液转移性腺癌细胞和间皮源性细胞有价值的一组抗体.     

联合检测E-cadherin、CEA及Calretinin在浆膜腔积液细胞学鉴别诊断中的意义

背景与目的：浆膜腔积液中转移性腺癌细胞、恶性上皮型间皮瘤细胞和反应性间皮细胞的形态有不少相似之处，有时仅凭形态学特征不能做出准确诊断。近年来免疫细胞化学在这方面得到较多应用，但国内报道仅局限于用CK、EMA、CEA、Vim和HBME-1几种抗体，而且不能较好地进行细胞学的鉴别诊断。本研究旨在探讨联合检测E-cadherin、CEA及calretinin在浆膜腔积液鉴别诊断中的应用价值。方法：选用浆膜腔积液标本共93例，其中胸水66例、腹水24例、心包积液3例。经组织学检查或结合临床资料证实的转移性腺癌55例、恶性上皮型间皮瘤6例、间皮细胞反应性增生32例。每例均制备HE染色的涂片和细胞块，并用细胞块切片作免疫细胞化学染色。结果：E-cadherin、CEA对诊断转移性腺癌的敏感性分别为85．5％(47／55)、78．2％(43／55)，特异性分别为100％(38／38)、97．4％(37／38)。E-cadherin和CEA联合应用诊断浆膜腔积液转移性腺癌的阳性率为96．4％(53／55)。Calretinin对诊断间皮瘤和间皮细胞增生的敏感性和特异性分别为81.6％(31／38)和87．2％(48／55)。结论：E-cadherin、CEA和calretinin是鉴别浆膜腔积液转移性腺癌细胞和间皮源性细胞有价值的一组抗体。     

D2-40在浆膜腔积液中的诊断价值

[目的]观察D2—40在浆膜腔积液间皮瘤细胞中的表达情况,并与目前常用的间皮瘤抗体进行比较,探讨其鉴别诊断价值。[方法]采用细胞块技术对88例浆膜腔积液进行免疫组化检测,观察D2．40、Calretinin、CK5／6的表达,并通过受试者工作曲线（ROC）对检查结果分析。根据各指标的AUC值探讨D2．40在浆膜腔积液中的诊断价值。[结果]D2—40、Calretinin、CK5／6在恶性间皮瘤细胞中的阳性表达率分别为89．3％、92．5％、71．4％,转移性癌中表达率分别为8．3％、12．5％、27．0％．增生间皮细胞中阳性率分别为83-3％、83-3％和66．7％。三种标志物在恶性间皮瘤、转移性腺癌及增生问皮细胞表达差异有显著性意义（P〈0．05）。D2—40灵敏度与Calretinin相当,高于CK5／6．特异性高于Calretinin、CK5／6。ROC曲线下显示D2—40的AUC值高于Calretinin和CK5／6。[结论]D2．40有望成为鉴别上皮型间皮瘤和转移性腺癌的有价值的抗体。     

胃腺癌组织中P-糖蛋白与p53、c-erbB-2、nm23表达的关系

目的　探讨胃腺癌细胞的耐药、抗药与肿瘤生物学特性的关系以及胃腺癌中P -糖蛋白 (P -gp)与 p5 3、c erbB 2、nm 2 3表达的关系。方法　采用S -P免疫组化染色方法 ,检测术前未接受化疗的 3 3例胃腺癌组织中P -gp和p5 3、c erbB 2、nm 2 3的表达。结果　P -gp和 p5 3、c erbB 2、nm 2 3在胃腺癌组织中的阳性表达率分别为 2 7.3 % ( 9/3 3 ) ,5 7.6% ( 19/3 3 ) ,3 9.4% ( 13 /3 3 ) ,84.9% ( 2 8/3 3 )。P -gp阳性表达与胃腺癌的分化程度、浸润深度、淋巴结转移以及nm 2 3表达无关 (P >0 .0 5 ) ;与p5 3、c erbB 2表达呈正相关 (P <0 .0 5 )。结论　P -gp与 p5 3、c erbB 2、nm 2 3协同表达可以作为胃腺癌临床耐药和判断预后的 1个重要指标。     

原发性输尿管癌p53、c-erbB-2和nm23表达与临床病理特征的关系

目的　研究输尿管癌 p5 3、c- erb B- 2、nm2 3基因的不同表达与其临床病理因素的关系。方法　应用免疫组化 S- P法检测 p5 3、c- erb B- 2、nm2 3等基因蛋白在 2 4例原发性输尿管癌中的表达情况 ,并对其结果与临床病理各参数的关系进行分析。结果　正常输尿管上皮三种基因蛋白均呈阴性 ,在输尿管癌中 p5 3、c- erb B- 2、nm2 3的阳性表达率分别为 41.6 % (10 /2 4)、5 4.1% (13/2 4)和 6 6 .7% (16 /2 4)。 p5 3、c- erb B- 2高表达与输尿管癌分化程度低、浸润至浆膜或浆膜外、生存期短等几项临床病理特征相关。nm2 3的表达与输尿管癌病理分级、浸润深度、临床预后无密切关联。结论　 p5 3、c- erb B- 2和 nm2 3基因参与了输尿管癌的发生发展过程 ,p5 3、c- erb B- 2蛋白表达可以作为输尿管癌生物学行为和预后判断的参考指标 ,两指标同时检测预示作用更可靠     

舌鳞状细胞癌组织中c-erbB-2异常表达的临床意义研究

目的:探讨舌鳞状细胞癌(squamouscell carcinoma, SCC)中c- erbB -2 表达的临床价值。方法:回顾性分析舌SCC -76 例临床病理资料。对常规HE染色检测证实有肿瘤及瘤旁正常黏膜同时存在的原始蜡块连续切片2张,1 张c erbB 2免疫组织化学染色, 1 张备用。结果:经免疫组织化学检测, c- erbB- 2 阳性者49 例(64 .5%),瘤旁黏膜阳性者15 例( 19. 7%)。c erbB 2基因过度表达与患者生存时间差异有统计学意义,P<0 05;c- erbB -2与舌SCC的转移差异也有统计学意义,P<0 01;c- erbB- 2基因异常表达与舌SCC分期有相关性,P<0 05;c- erbB- 2基因异常表达与舌SCC分级无相关性。c- erbB- 2基因异常表达与舌SCC大小、原发灶的控制、性别、年龄无相关性;c -erbB- 2基因异常表达与局部复发无相关性。结论:在舌SCC中c- erbB- 2基因过度表达可缩短患者的生存时间,并有促进肿瘤细胞转移的可能性。     

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     

p16、p63蛋白在甲状腺肿瘤中的表达及其意义

目的　探讨抑癌基因蛋白p16和 p63在各型甲状腺肿瘤中的表达及其意义。 方法　采用免疫组织化学 (EnvisionTM)法检测 60例甲状腺肿瘤细胞中 p16和 p63蛋白的表达情况。 结果　甲状腺腺瘤中 p16及 p63蛋白阳性表达率分别为 60 .0 % ( 18/3 0 )和 46.7% ( 14 / 3 0 ) ,明显高于甲状腺癌 ( 3 3 .3 % ,10 / 3 0 ;2 0 .0 % ,6/ 3 0 ) ,有显著性差异 (P <0 .0 5 )。甲状腺乳头状腺瘤中 p16和p63蛋白阳性表达率分别为 80 .0 % ( 12 / 15 )和 60 .0 % ( 9/ 15 ) ,明显高于甲状腺乳头状腺癌中阳性率 ( 3 3 .3 % ,5 / 15 ;2 0 .0 % ,3 / 15 ) ,有显著性差异 (P <0 .0 5 )。甲状腺滤泡状腺瘤中 p16和p63蛋白阳性表达率分别为 40 .0 % ( 6/ 15 )和 3 3 .3 % ( 5 / 15 ) ,高于甲状腺滤泡状腺癌中其阳性表达率 ( 3 3 .3 % ,5 / 15 ;2 0 .0 % ,3 / 15 ) ,但无显著性差异 (P >0 .0 5 )。结论　检测甲状腺癌中p16和 p63蛋白表达水平 ,对甲状腺恶性肿瘤的诊断和预后评估有一定意义     

肺癌中多癌基因异常表达的临床研究

目的 :通过 76例肺癌切除标本进行免疫组化染色来探索癌相关基因 c- erb B- 2、ras p2 1和 p5 3与肺癌的组织分型和 TNM分期之间的关系。方法 :随机选取 76例肺癌手术切除标本 ,其中鳞癌 35例 ,腺癌 2 2例 ,小细胞癌10例 ,大细胞癌 4例 ,腺鳞癌 5例。TNM 期 8例 , 期 35例 , 期 33例。均按文献方法进行免疫组化染色后按阳性表达率进行统计分析。结果 :c- erb B- 2和 p5 3的总阳性表达率分别为 6 4.5 %及 5 2 .6 % ,且在小细胞癌中分别高达 10 0 %和 90 .0 % ,明显超过 ras p2 1(P<0 .0 1) ,但 ras p2 1在腺癌中的表达率 (72 .3% )高于 c- erb B- 2和 p5 3。同时 ,c- erb B- 2在 TNM 期中 87.9%的表达率也高于 、 期和 ras p2 1、p5 3在 期的表达率 (P<0 .0 5 )。结论 :c-erb B- 2过度表达与预后差 ,恶性度高 ,病程长或晚期肺癌有关联 ;ras p2 1可能参与腺癌的发生 ;p5 3则可能与恶性度高 ,预后差的小细胞癌的发生和转归有关。     

E-cadherin标记体腔积液中癌细胞的价值

目的评价E-cadherin抗体辨认体腔积液内癌细胞的价值.方法采用石蜡细胞块技术对62例恶性体腔积液标本和22例间皮增生的体腔积液标本进行免疫细胞化学检测E-cadherin、BerEP4、CEA、Calretinin和Desmin,并计算各抗体辨认癌细胞或间皮细胞的敏感性和特异性.62例恶性体腔积液标本中癌性积液53例(包括肺非小细胞癌29例,肺小细胞癌2例,乳腺癌5例,胃癌4例,大肠癌3例,肝癌1例,食道癌3例,胰腺癌1例,卵巢癌4例,子宫颈癌1例),非癌性积液4例(包括淋巴瘤2例,骨髓瘤1例和恶黑1例),不明组织来源5例.结果62例恶性体腔积液标本E-cadherin的阳性率为85.5%(53/62).去除不明组织来源和非癌性积液病例后,53例癌性积液的E-cadherin阳性率为88.7%(47/53),其中乳腺、食道、大肠和卵巢等部位来源的癌性积液的阳性率均为100%.而间皮细胞E-cadherin反应均为阴性.E-cadherin、BerEP4和CEA检测癌细胞的敏感性分别为88.7%、79.2%和67.9%,E-cadherin、BerEP4和CEA检测癌细胞的特异性分别为96.2%、100%和92.3%.Calretinin和Desmin检测间皮细胞的敏感性100%和91%,特异性分别为94.7%和100%.结论本组研究结果表明E-cadherin是一个体腔积液内癌细胞的敏感和特异的标记,可以作为免疫细胞化学鉴别良恶性体腔积液的抗体组合成员之一.     

Immunocytochemistry in the differential diagnosis of serous effusions: a comparative evaluation of eight monoclonal antibodies in Papanicolaou stained smears

BACKGROUND: The distinction between pleural mesothelioma (MS), reactive mesothelium (RM), and adenocarcinoma (AC) in serous effusions continues as a diagnostic problem in pathology. Immunohistochemistry can help, especially in surgical samples, but the optimum panel of antibodies has yet to be reported. The application of these antibodies to serous effusions has displayed variable results. The aim of this study was to evaluate the usefulness of eight monoclonal antibodies in the differential diagnosis of MS, RM, and AC in serous effusions. METHODS: A total of 44 cytologic specimens of serous effusions (26 pleural, 15 peritoneal, and 3 pericardial) from 30 ACs, 3 MSs, and 11 RMs, previously stained with Papanicolaou stain, were selected retrospectively from our files and stained with HBME-1, thrombomodulin, calretinin, MOC-31, Ber-EP4, E-cadherin, CEA, and CD-15. The immunoreactions were evaluated independently by two pathologists. A stepwise logistic regression analysis was applied to the data to select an appropriate panel of antibodies. RESULTS: Statistical significance was found with HBME-1, thrombomodulin, MOC-31, Ber-EP4, and CD-15, when comparing both AC versus MS, and AC versus any type of mesothelial proliferation (MS or RM). Using HBME-1, 80% of ACs were negative whereas all three MSs reacted strongly with P = 0.003. A P = 0.02 was reached with thrombomodulin with 76.5% of ACs showing no immunoreactivity. Ber-EP4 and MOC-31 displayed good results with a P < 0.001 and 0.01, respectively. CD-15 reached a P = 0.034. No differences were found using the other antibodies. Ten ACs, all 3 MSs, and 10 RMs were double immunostained with HBME-1 and/or MOC-31 and Ber-EP4 successfully. CONCLUSIONS: Immunohistochemical studies performed on Papanicolaou stained cytologic smears proved to be useful in the differentiation between metastatic AC and mesothelial proliferation. HBME-1, thrombomodulin, MOC-31, Ber-EP4, and CD-15 were the most useful. In selected cases, it appeared that double immunostaining aided the differential diagnosis. Cancer (Cancer Cytopathol) Copyright 2001 American Cancer Society.     

Expression of tumor suppressor and tumor-related proteins in differentiated carcinoma, undifferentiated carcinoma with tubular component and pure undifferentiated carcinoma of the stomach

BACKGROUND: The recent development of tissue microarray (TMA) technology allows high-throughput protein expression profiling of cancer tissues by immunohistochemistry. We attempted to clarify the derivation of undifferentiated-type gastric carcinoma with tubular component by using TMA. METHODS: We constructed a TMA system composed of six paraffin blocks in which 274 samples of formalin-fixed gastric carcinoma tissue from 274 patients were embedded. Using this system, we performed immunohistochemical stains for five tumor suppressor and tumor-related proteins, i.e. p53, p16, hMLH1, c-erbB-2 and carcinoembryonic antigen (CEA). The 274 gastric carcinomas were histopathologically divided into the following three groups according to the degree of differentiation: differentiated-type (D-type), undifferentiated-type with tubular component (UT-type) and pure undifferentiated-type (UP-type). Immunohistochemical results were then compared with histological types. RESULTS: The percentages of abnormal expression of each protein in D-type, UT-type and UP-type carcinomas were as follows: 27% (38/143), 17% (17/98) and 15% (5/33) for p53; 27% (39/143), 19% (19/98) and 18% (6/33) for p16; 38% (54/143), 44% (43/98) and 24% (8/33) for hMLH1; 15% (22/143), 5% (5/98) and 0% (0/33) for c-erbB-2; and 22% (31/143), 35% (34/98) and 70% (23/33) for CEA. UP-type carcinomas exhibited the lowest frequencies of abnormal expression for p53, p16, hMLH1 and c-erbB-2, but the highest frequencies for CEA. UT-type carcinomas generally showed intermediate frequencies between those of D-type and UP-type carcinomas. Differences between D-type and UP-type for c-erbB-2 (P < 0.05) and CEA (P < 0.001) were significant, as were differences between D-type and UT-type for c-erbB-2 (P < 0.05) and CEA (P < 0.05), and differences between UT-type and UP-type for hMLH1 (P < 0.05) and CEA (P < 0.001). CONCLUSIONS: These findings reveal that gastric carcinomas have distinct expression profiles for tumor suppressor and tumor-related proteins depending on histological types, and support the hypothesis that UT-type carcinomas are derived not only from D-type but also from UP-type carcinomas. We also found significant differences between abnormal protein expression and other clinicopathological parameters such as gender, age and status of tumor and nodes.     

Calretinin、CEA标记在胸腹腔积液细胞学诊断中的应用

目的：探讨calretinin、CEA免疫细胞化学标记对浆膜腔积液中正常、反应性间皮细胞与转移性癌细胞的鉴别诊断价值。方法：59例胸腹腔积液标本，采用常规：HE染色、CEA及calretinin免疫细胞化学标记。最后诊断通过活检、随访等确立。结果：最后诊断转移癌17例、良性者37例、未确定5例。Calretinin对间皮细胞标记的阳性率为94．6％(35／37)[86.5％(32／37)，强阳性]，转移癌细胞23．5％(4／17)阳性[5．9％(1／17)强阳性]；CEA对转移癌细胞标记的阳性率为88．4％(15／17)[52．9％(9／17)强阳性]，良性间皮细胞43．2％(16／37)阳性[13．5％(5／17)强阳性]。17例转移癌中，11例calretinin、CEA两项标记支持转移癌诊断；良性组中，CEA标记有较多假阳性。结论：CEA的特异性相对较差，calretinin对间皮细胞标记的特异性、敏感性较高。结果判定时，强阳性结果较弱阳性结果有意义，calretinin结果较CEA更有价值。认真细致的形态学观察，辅以calretinin及CEA标记，可有效地避免假阳性诊断。     

Expression of biomarkers (p53, transforming growth factor alpha, epidermal growth factor receptor, c-erbB-2/neu and the proliferative cell nuclear antigen) in oropharyngeal squamous cell carcinomas

Using immunohistochemistry, expression of p53, transforming growth factor-alpha (TGF-alpha), epidermal growth factor receptor (EGFR), c-erbB-2/neu and proliferating cell nuclear antigen (PCNA) was examined in 26 fresh frozen tissue specimens of oropharyngeal squamous cell carcinomas (SCCs). p53 gene mutations were examined by polymerase chain reaction (PCR)/DNA sequencing methods in 22 carcinomas. The findings were examined for correlations with patients' clinicopathological parameters. Expressions of p53 and PCNA were also examined in 21 formalin-fixed corresponding tissues. Of the fresh frozen tissue specimens, 77% (20/26) showed expression and 68% (15/22) showed mutations (substitutions) of the p53, with significant clustering of the mutations in exons 5 (8/22; 36%), 7 (4/22; 18%) and 8 (5/22; 23%). No mutations were found in exon 6. There was a discordance between expression of p53 protein and mutations of the gene. Parallel to expression and mutations of the p53 found in most of the specimens, expression of TGF-alpha, EGFR, c-erbB-2/neu and PCNA was found in 88% (22/25), 92% (23/25), 58% (14/24) and 91% (21/23) of the specimens, respectively. For the formalin-fixed tissue specimens, 62% (13/21) and 90% (19/21) expressed p53 and PCNA, respectively. Examining for correlations with patients' clinicopathological parameters, expression of p53, TGF-alpha, EGFR and c-erB-2/neu seemed to negatively correlate with the increase of the tumour grade. The present work suggests that: (1) lack of negative growth regulation due to inactivation of the p53 gene together with activation of other proto-oncogenes are necessary genetic events in the carcinogenesis of oropharyngeal SCCs; (2) in oropharyngeal SCCs, p53 gene mutations were clustered in exons 5 (codons 130-186), 7 (codons 230-248) and 8 (codons 271-282) which perhaps suggests that tobacco carcinogens probably affect the mutational hot spots of the p53 gene at codons 157, 175, 186, 248, 273 and 282; and (3) fresh frozen and formalin-fixed tissue specimens give similar results when an immunohistochemical method is applied. The importance of p53, TGF-alpha, EGFR, c-erbB-2/neu and PCNA as biomarkers in oropharyngeal SCCs deserves particular attention because it might offer further understanding of the development of these carcinomas.     

c-erbB-2 protein overexpression and p53 immunoreaction in primary and recurrent breast cancer tissues

BACKGROUND AND OBJECTIVES: We investigated whether expression levels of c-erbB-2 and p53 proteins in breast cancer tissues differ in primary and metastatic lesions. METHODS: Immunohistochemical staining or sandwich enzyme immunoassay was used to determine expression levels of c-erbB-2 and p53 proteins in 42 breast cancer samples from 21 patients. Estrogen (ER) and progesterone receptors (PgR) were also measured by enzyme immunoassay in each case. All patients had undergone radical surgery for primary tumors and surgical resection of asynchronous metastatic lesions. Thirteen patients (62%) were premenopausal and 14 (67%) received postoperative adjuvant therapies. Median disease-free survival time was 26 months (range, 5-104). The resected metastatic lesions included 1 in the liver, 3 in the lung, and 3 in the supraclavicular lymph nodes. The remaining 14 were local skin lesions. RESULTS: There was no difference in the positivity rate of c-erbB-2 (38%: 8/21) and p53 (39%: 7/18) expression between the primary tumors and the recurrent lesions. In addition, no discordant c-erbB-2 or p53 expression was observed between the primary tumors and their respective metastatic lesions. Positivity rates for ER and PgR were 50% (10/20) and 60% (12/20) for the primary tumors, but only 25% (5/20) and 30% (6/20) for the recurrent lesions, respectively (P = 0. 19 for ER and P = 0.11 for PgR). CONCLUSIONS: c-erbB-2 and p53 expression levels in breast cancer cells were almost unchanged as the disease progressed and/or in response to adjuvant therapies, regardless of the hormone receptor status.     

Dual colour flow cytometry of p53 and c-erbB-2 expression related to DNA aneuploidy in primary and metastatic breast cancer.

DNA aneuploidy and p53 or c-erbB-2 expression were simultaneously measured in 29 breast tumours by two-colour flow cytometry. (i) The majority of tumours had some cells expressing either p53 (5-68%) or c-erbB-2 (1-56%). (ii) Expression of p53 and c-erbB-2 was observed mainly in the aneuploid population of mixed aneuploid and diploid tumours but there was no significant correlation with a specific DNA index. Aneuploid tumours contained higher percentages of c-erbB-2 positive cells (average 25%) than purely diploid tumours (average 15%) but this just failed to reach significance (P = 0.074). No relevant trends were noted for p53 expression. (iii) Significantly increased c-erbB-2 expression was observed in stage 2 tumours (26%) compared to stage 1 tumours (12%) (P = 0.001) with no trend evident for p53 expression. (iv) The metastatic tumour in the axillary node contained similar or slightly higher percentages of positive cells than the matched primary tumour.     

淋巴结阴性乳腺癌p21~(waf1)、c-erbB-2和p53蛋白表达及其临床意义

目的：探讨腋淋巴结阴性乳腺癌组织中ｐ２１ｗａｆ１、ｃ－ｅｒｂＢ－２和ｐ５３基因蛋白表达及其与临床病理参数和预后的关系。方法：应用免疫组化ＬＳＡＢ方法检测１２１例腋淋巴结阴性乳腺癌石蜡切片中ｐ２１ｗａｆ１、ｃ－ｅｒｂＢ－２和ｐ５３蛋白的表达情况;同时应用Ｋａｐｌａｎ－Ｍｅｉｅｒ法及多变量Ｃｏｘ比例风险模型,分析３种蛋白表达与预后的关系。结果：（１）ｐ２１ｗａｆ１蛋白表达率为 ４８． ８％,与病理组织学分级、ＥＲ状态有关; ｐ５３蛋白表达率为 ３６． ４％, ｃ－ｅｒｂＢ－２蛋白表达率为 ２６． ４％,与组织学分级有关;（２）ｐ２１ｗａｆ１阳性表达与 ｐ５３表达呈负相关（ Ｐ＜ ０． ０５）;（３）ｐ２１ｗａｆ１阳性组患者无瘤生存率高于阴性组（Ｐ＜０．０５）;ｃ－ｅｒｂＢ－２阳性组患者无瘤生存率明显低于阴性组（Ｐ＜０ ０１）;Ｃｏｘ模型分析显示仅有ｃ－ｅｒｂＢ－２表达对预后有显著影响。结论：乳腺癌组织ｐ２１ｗａｆ１、ｃ－ｅｒｂＢ－２表达与病理组织学分级有相关性;ｐ２１ｗａｆ１表达依赖于ｐ５３途径刺激; ｐ２１ｗａｆ１、、ｃ－ｅｒｂＢ－２表达与腋淋巴结阴性乳腺癌预后有关,且ｃ－ｅｒｂＢ－２表达是一个独立的预后指标。     

P53-immunoreactive cells in benign and malignant effusions: diagnostic value using a panel of monoclonal antibodies and comparison with CEA-staining

The diagnosis of malignancy in peritoneal and pleural effusions can be difficult, because activated mesothelial cells may resemble malignant cells. P53 mutations are the most frequent genetic changes in human cancer and translate into an overexpression of the p53 protein detectable by immunocytochemistry. In this study, we investigated the sensitivity and specificity of 4 different monoclonal antibodies (moAB) against p53 for the diagnosis of malignancy in effusions. We also compared p53 staining with CEA immunocytochemistry which previous work had established as a specific marker of malignancy in body cavity effusions. Normal and malignant cells from 28 benign and 52 malignant effusions (pleura and ascites) were examined by indirect immuno-alkaline phosphatase method. Four different moAB against p53 (PAB 1801, PAB 240, DO-1 and DO-7) and one moAB against CEA (CEA-84) were used. Antibodies p1801, p240 and DO-1 react with 52-75% of cases of effusions with malignant cells, but also with 38-80% of benign effusions. Only the antibody DO-7 and the CEA moAB show specificity for malignant cells reacting respectively with 20 (55%) of cases. A combination of these 2 markers does not enhance the sensitivity for the detection of tumor cells. No direct correlation between CEA and p53 immunostaining could be established. The sensitivity and specificity of staining p53 in malignant cells by immunocytochemistry depend strongly on the antibody used. Some p53 moAB are positive with reactive cells in ascites and pleural effusions. Currently, p53 staining of expressing cells does not improve the identification of malignant cells in comparison with CEA immunocytochemistry, but may help to screen for patients with p53 mutations.     

乳腺癌C—erBb—2、p53、ER和PR表达及意义

目的 分析研究C-erBb-2、p53、ER和PR在乳腺癌中的表达与转移及预后关系。方法用免疫组化法测定192例原发乳腺癌各抗体的表达情况。结果 C-erBb-2阳性率为39.1％(75/192),p53阳性率为32.3％(62/192),ER阳性率为47.9％(92/192),PR阳性率为54.2％(104/192)。C-erBb-2、p53随临床分期的递增和淋巴结转移数目的增多,其阳性表达率随之增加,差异有显著性(P<0.05)。ER和PR的阳性表达率则与C-erBb-2、p53呈负相关,但差异无显著性(P>0.05)。C-erBb-2、p53共同阳性表达与淋巴结转移差异有显著性(P<0.05)。结论 C-erBb-2、p53是判断乳腺癌预后的有效指标。ER、PR与临床分期、淋巴结转移有一定关系,但不十分明显。