子宫内膜癌中Rb2/P130、PTEN及Ki-67的表达及意义

目的 探讨正常子宫内膜、子宫内膜增殖症及内膜癌组织中Rb2/P130、PTEN及Ki-67的表达以及与子宫内膜癌发生的关系.方法 应用免疫组化SP法检测30例正常子宫内膜组织、32例单纯型增生过长、31例复杂型增生过长、36例不典型增生、64例子宫内膜癌组织中Rb2/P130、PTEN和Ki-67的表达.结果 Rb2/P130、PTEN蛋白在正常子宫内膜、单纯性增生过长、复杂型增生、不典犁增生、子官内膜癌组织中的阳性表达率依次递减,而Ki-67的阳性表达率依次递增,子宫内膜癌和不典型性增生中Rb2/P130、PTEN阳性表达率明显低于正常增生期子宫内膜和单纯性增生,差异均有显著性(P均<0.01),而Ki-67的阳性表达率明显高于正常增牛期子宫内膜和单纯性增生过长,差异均有显著性(P均<0.01).Rb2/P130、PTEN阳性表达缺失与组织学分级有关(P均<0.01)、与子宫肌层浸润程度无关,Rb2/P130阳性表达缺失与淋巴结转移无关,PTEN阳性表达缺失与淋巴结转移有关(P<0.05),而Ki-67阳性表达与组织学分级、临床分期及淋巴结转移有关(P<0.01,P<0.05,P<0.01),与子宫肌层浸润程度无关.Rb2/P130、PTEN蛋白表达与Ki-67呈负相关(P<0.003.P<0.000).结论 Rb2/P130、PTEN蛋白与Ki-67的异常表达与子宫内膜癌的发生相关,有可能成为子宫内膜组织早期癌变的有用标记物.     

正常,增生过长子宫内膜及内膜癌ER,PR检测探讨

本实验用亲和组化法检测增生期、分泌期、增生过长子宫内膜及内膜癌的雌激素受体(estrogen receptor,ER)和孕激素受体(Progesterone receptor,PR)。各组强阳性率结果:增生期内膜ER为56.5%,PR为43.5%;分泌期内膜ER仅为6.5%,PR为3.5%;增生过长内膜ER为25%;子宫内膜癌ER为13%,且与分化程度呈正比。统计学处理,增生期子宮内膜与分泌期、增生过长内膜及內膜癌的受体水平均差异有显著性,P<0.01、P<0.05。增生过长子宫内膜与内膜癌受体水平及分布特点差异无显著性,P>0.05。癌周残留内膜间质细胞及肌层组织均显示相当水平的ER、PR。本文就ER、PR在子宫内膜癌的发生、临床、病理的关系及检测方法进行了讨论。     

子宫内膜癌组织中Id-1、VEGF-C和EGFR的表达及临床意义

目的探讨Id-1、VEGF-C和EGFR在正常子宫内膜、子宫内膜增殖症和内膜癌组织中的表达及临床病理学意义。方法采用组织芯片技术和免疫组化检测30例正常子宫内膜组织、30例单纯性增生过长、30例复杂性增生伴不典型增生、72例子宫内膜癌组织中Id-1、VEGF-C和EGFR蛋白表达。结果Id-1、VEGF-C和EGFR蛋白在子宫内膜腺癌组织中的阳性表达率明显高于正常子宫内膜和子宫内膜增殖症(P0.01),Id-1过表达与组织学分级、临床分期、浸润程度和淋巴结转移有关(P0.01,P0.01,P0.05,P0.05);VEGF-C和EGFR阳性表达均与临床分期、浸润程度和淋巴结转移有关(P0.05),与组织学分级无关;Id-1与VEGF-C和EGFR蛋白表达呈正相关(rs=0.625,P0.01;rs=0.313,P0.008)。结论Id-1蛋白参与VEGF-C和EGFR调控,指示其可能与子宫内膜癌的发生发展有关,联合检测可作为判断子宫内膜癌浸润和转移的重要指标。     

子宫内膜病变组织中Artermin的表达及意义

目的 观察Artermin(ARTN)在子宫内膜病变组织中的表达及其临床意义.方法 建立组织微阵列平台,应用免疫组化SP法检测38例正常子宫内膜、20例子宫内膜简单型增生、20例子宫内膜复杂型增生和47例子宫内膜样腺癌组织中ARTN蛋白的表达.结果 子宫内膜样腺癌中ARTN的阳性率为83.0%,明显高于正常子宫内膜、子宫内膜简单型增生和复杂型增生(P<0.01);子宫内膜样腺癌中ARTN的表达与肿瘤组织学分级、肿瘤子宫肌层浸润均有相关性(P<0.01,P<0.05).结论 子宫内膜样腺癌中ARTN的表达失调,其可能参与子宫内膜癌的发生、发展.     

Ki-67及ezrin在子宫内膜腺癌中的表达及意义

目的　探讨Ki 6 7及ezrin在子宫内膜癌中的表达及意义。方法　应用免疫组化方法检测Ki 6 7和ezrin在子宫内膜腺癌、非典型增生、子宫内膜增殖症及正常内膜中的表达 ;应用RT PCR技术对Ki 6 7 和ezrin mRNA在子宫内膜癌及正常内膜中的表达进行半定量分析。结果　Ki 6 7指数在子宫内膜癌、非典型增生及子宫内膜增殖症分别为 39.9± 6 .4、1 8.9± 1 4 .7、1 8.6± 1 5 .3,明显高于正常子宫内膜的 1 .1± 1 .6 7(P <0 .0 5 )。正常及子宫内膜增殖症的ezrin表达几乎全集中于细胞膜上 ,而子宫内膜癌及非典型增生的ezrin表达则为细胞浆内的弥漫性染色。在子宫内膜癌组织中 ,Ki 6 7mRNA表达为 0 .6 0 75± 0 .0 887,高于正常内膜组织的 0 .35 32± 0 .1 2 6 7。结论　Ki 6 7抗原过量表达与子宫内膜癌的发生及恶性程度密切相关 ;ezrin的着色部位对子宫内膜病变的性质有标识作用     

Fhit、p53表达与子宫内膜癌发生和发展的相关性

目的　探讨正常子宫内膜、子宫内膜增殖症及内膜癌组织中Fhit、p53蛋白表达,以及与子宫内膜癌发生、发展的关 系。方法　应用免疫组化S P法检测37例正常子宫内膜组织、27例单纯型增生过长、28例复杂型增生过长、38例子宫内膜癌 组织中Fhit、p53蛋白的表达。结果　在正常子宫内膜(增生期、分泌期)、子宫内膜增殖症(单纯型增生过长、复杂型增生过 长、不典型增生)、子宫内膜腺癌组织中Fhit蛋白的阳性表达率依次递增,差异有显著性(χ2=33.726,P<0.005)。p53蛋白的 阳性表达率也依次递增,差异有显著性(χ2=58.474,P<0.005)。在腺瘤型增生过长、不典型增生及子宫内膜腺癌组织中Fhit (χ2=6.571,P=0.037)、p53(χ2=6.915,P=0.032)蛋白的阳性表达率依次递增,差异有显著性。Fisher精确概率检验显示不 同肌层浸润组Fhit(P=0.033)、p53(P=0.034)蛋白的表达差异有统计学意义,而在年龄、是否绝经、手术病理分期、组织学分 级组的表达无统计学意义(P>0.05)。Spearman等级相关分析显示Fhit、p53蛋白表达呈正相关(r=0.900,P<0.05)。在月 经期内膜的腺上皮细胞胞质中的Fhit蛋白阳性表达率为72.72%。结论　Fhit、p53蛋白的表达与子宫内膜癌的发生相关。 Fhit基因可能成为子宫内膜组织早期癌变的分子标记物。     

子宫内膜样腺癌中TBX2、PAX9的表达及其相关性

目的 探讨TBX2、PAX9在正常子宫内膜、子宫内膜增殖症和子宫内膜样腺癌(endometrioid adenocarcinoma,EA)组织中的表达及临床病理学意义.方法 采用组织芯片技术和免疫组化检测30例正常子宫内膜组织、30例单纯性增生内膜、30例复杂伴不典型性增生内膜、82例EA组织中TBX2、PAX9蛋白的表达.结果 TBX2蛋白在子宫内膜样腺癌中的阳性表达率明显高于正常子宫内膜和子宫内膜增殖症(P均＜0.01),TBX2过表达与组织学分级、临床分期、浸润程度均有相关性(P＜0.01,P＜0.05,P＜0.01),与淋巴结转移无相关性(P＞0.05);PAX9蛋白在子宫内膜样腺癌中的阳性表达率明显高于正常子宫内膜、子宫内膜单纯性增生(P均＜0.01),而和复杂伴不典型性增生之间没有统计学意义(P＞0.05),在复杂伴不典型增生中表达明显高于正常子宫内膜和单纯性增生内膜(P均＜0.01),PAX9阳性表达与组织学分级、临床分期、浸润程度均有相关性(P＜0.01,P＜0.01,P＜0.05),但与淋巴结转移无相关性(P＞0.05).TBX2与PAX9蛋白呈正相关(rs=0.427,P＜0.01).结论 TBX2和PAX9均在子宫内膜样腺癌中发生、发展中发挥重要作用,联合检测其表达可为子宫内膜样腺癌的早期诊断、预后判断提供有价值的指标.     

转移抑制基因KAI1表达与子宫内膜腺癌进展的关系

目的探讨KAI1蛋白表达与子宫内膜腺癌进展的关系。方法应用免疫组化SP法检测20例正常子宫内膜组织、17例子宫内膜不典型增生和48例子宫内膜腺癌组织中KAI1蛋白的表达情况。结果子宫内膜腺癌中KAI1蛋白的阳性率明显低于正常内膜组织(P<0.01)和内膜不典型增生组织(P<0.01)。KAI1蛋白的表达随子宫内膜腺癌恶性程度(P<0.01),肌层浸润深度(P<0.01)及手术-病理分期(P<0.05)的增高而降低,并与子宫内膜腺癌组织学类型有关(P<0.01),有淋巴结转移的组织中KAI1蛋白阳性率明显低于无转移组织(P<0.01)。KAI1阴性的患者总的生存率低于阳性者(P<0.01,<0.01)。结论KAI1蛋白在子宫内膜腺癌的恶性进展中表达下调,有望成为内膜癌恶性程度评估,转移预测和判断预后的有效指标。     

子宫内膜样腺癌组织中p53蛋白和VEGF的表达及意义

子宫内膜癌是最常见的女性生殖道恶性肿瘤之一,近年来子宫内膜癌的发病率有明显增高趋势,与宫颈癌收治率比较,已趋接近甚至超过,而与雌激素相关的子宫内膜样腺癌占全部子宫内膜癌的80％～900h,,其与子宫内膜增生过长关系密切。笔者运用免疫组化S-P法检测p53、VEGF在子宫内膜样腺癌中的表达,旨在探讨其与子宫内膜样腺癌的组织学分级、浸润深度、临床分期和肿瘤转移、预后的关系。     

子宫内膜癌中survivin与PTEN、p53蛋白的表达及其相互关系

目的 观察子宫内膜癌中survivin与PTEN、p53蛋白的表达情况,探讨它们在子宫内膜癌中表达的意义及相互关系.方法 应用免疫组化EliVision方法检测86例子宫内膜癌、30例不典型增生子宫内膜、30例正常子宫内膜中survivin与PTEN、p53蛋白的表达.结果 survivin在子宫内膜癌、不典型增生子宫内膜和正常子宫内膜中的阳性表达率分别为76.7%、40.0%、13.3%,差异均有显著性(P均＜0.01);PTEN在子宫内膜癌、不典型增生子宫内膜和正常子宫内膜的阳性表达率分别为40.7%、60.0%、100.0%,前两者均低于后者,差异有显著性(P＜0.01),但前两者之间差异无统计学意义;p53在子宫内膜癌、不典型增生子宫内膜和正常子宫内膜中的阳性表达率分别为43.0%、20%、0.0%,差异均有显著性(P＜0.01).survivin、PTEN的表达均与子宫内膜癌的组织分级、临床病理分期及肌层浸润无关.p53的表达与上述密切相关.survivin的表达与子宫内膜癌的组织学类型无关,而PTEN和p53的表达与其密切相关.survivin与p53在子宫内膜癌中的表达存在正相关性(rs=0.367,P＜0.01);survivin与PTEN在子宫内膜癌中的表达存在负相关性(rs=-0.384,P＜0.01).结论 survivin与PTEN、p53蛋白在子宫内膜癌的发生、发展中起着协同而独立的作用,对其进行联合检测有助于子宫内膜癌的早期诊断及预后.     

子宫内膜增生及内膜癌中PTEN、Ki-67蛋白的表达

目的　研究子宫内膜增生组织及内膜癌组织中PTEN、Ki 6 7蛋白的异常表达 ,探讨其与子宫内膜癌变的关系及作为早期癌变生物学标志的可能性。方法　应用免疫组化S P法对 12例正常增生期子宫内膜组织、4 0例子宫内膜增殖症组织、4 2例内膜腺癌组织中PTEN、Ki 6 7蛋白的表达进行研究。结果　在正常增生期子宫内膜、子宫内膜增殖症 (单纯增生、复杂型增生、不典型增生 )、子宫内膜腺癌组织中PTEN蛋白的阳性表达率呈递减趋势 ;Ki 6 7蛋白的阳性表达率呈递增趋势。等级相关分析结果显示PTEN、Ki 6 7表达异常与子宫内膜组织学分级均显著相关 (相关系数r分别为 - 0 5 4 1和 0 4 96 ,P值均<0 0 1)。子宫内膜癌与除不典型增生外的子宫内膜增殖症组织及正常增生期子宫内膜组织的PTEN、Ki 6 7蛋白表达差异有显著性 ,正常增生期子宫内膜、单纯增生与不典型增生组织的PTEN蛋白表达差异有显著性 ,不典型增生与单纯增生组织的Ki 6 7蛋白表达差异有显著性。PTEN、Ki 6 7蛋白表达存在负相关性 (r =- 0 4 2 8,P <0 0 1)。PTEN、Ki 6 7蛋白的表达与子宫内膜癌的手术分期、组织学分级、肌层浸润无关 (P >0 0 5 )。结论　PTEN、Ki 6 7蛋白的异常表达与子宫内膜的癌变过程相关 ,PTEN基因表达异常及细胞增殖异常与子宫内膜     

Ezh2、Runx3和caspase-3在子宫内膜样腺癌中的表达及相关性

目的 探讨Ezh2、Runx3和caspase-3在正常子宫内膜、子宫内膜增殖症和子宫内膜样腺癌组织中的表达及相关性.方法 采用组织芯片技术和免疫组织化学SP法检测30例正常子宫内膜组织、30例单纯性增生内膜、30例复杂伴不典型增生内膜、72例子宫内膜样腺癌组织中Ezh2、Runx3和caspase-3蛋白的表达.结果 Ezh2、Runx3和caspase-3蛋白在子宫内膜样腺癌组织中的阳性表达率分别为83.3%(60/72)、26.4%(19/72)、33.3%(24/72);Ezh2在腺癌组织中的阳性率明显高于正常和各型增生内膜(16.7%、33.3%、63.3%;P<0.05),Runx3在腺癌组织中的阳性率明显低于正常和单纯性增生内膜(80.0%、56.7%;P<0.01),caspase-3在腺癌组织中的阳性率明显低于正常和各型增生内膜(86.7%、73.3%、63.3%;P<0.01),差异均有统计学意义.Ezh2和Runx3的阳性表达与组织分级、临床分期和肌层浸润深度均有关(均P<0.05),与淋巴结转移均无关(P>0.05);caspase-3的阳性表达与组织分级有关(P<0.05),而与临床分期、浸润深度及淋巴结转移均无关(P>0.05).Ezh2与Runx3的蛋白表达呈负相关(rs=-0.262,P<0.05).结论 Ezh2、Runx3和caspase-3可能在子宫内膜样腺癌的发生发展过程中发挥重要作用,联合检测其表达可为子宫内膜样腺癌的预后监测及新基因靶点的探寻提供依据.

Abstract：

Objective To investigate the role of the expression of Ezh2, Runx3 and caspase-3 proteins and their correlation in the pathogenesis of endometrial carcinoma. Methods Expression of Ezh2, Runx3 and caspase-3 proteins was examined by tissue microarray technique and immunohistochemistry (SP method) in 72 cases of endometrial adenocarcinomas, 60 endometrial hyperplasia and 30 normal endometrial tissues. Results The positive expression rates of Ezh2, Runx3 and caspase-3 proteins in endometrial adenocarcinomas were 83.3%(60/72), 26.4%(19/72) and 33.3%(24/72), respectively. The positive rate of Ezh2 protein in endometrial carcinomas was higher than that in normal endometrium and endometrial hyperplasia(16.7%, 33.3%, 63.3%;P<0.05). However, the positive rate of Runx3 in endometrial carcinomas was lower than that in normal endometrium and endometrial hyperplasia(80.0%,56.7%; P<0.01). The positive rate of caspase-3 protein in endometrial carcinomas was lower than that in normal endometrium and endometrial hyperplasia(86.7%, 73.3%, 63.3%;P<0.01). Positive expression of Ezh2 and Runx3 was related to the histological grade, FIGO stage, and depth of invasion of endometrial adenocarcinomas(P<0.05), but it was not related to the lymph node metastasis (P>0.05). Positive expression of caspase-3 protein was related to the histological grade(P<0.05), but it was not related to the FIGO stage, depth of invasion and the lymph node metastasis of endometrial adenocarcinomas (P>0.05). The expression of Ezh2 protein was negatively correlated to that of Runx3 (rs=-0.262, P<0.05). Conclusions Abnormal expression of Ezh2, Runx3 and caspase-3 proteins is associated with the development and progression of endometrioid adenocarcinoma. Combined analysis of Ezh2, Runx3 and caspase-3 may offer prognostic information for patients with endometrial cancer.     

子宫内膜腺癌组织中cyclinD1、PCNA和Ki-67的表达

目的　探讨cyclinD1、PCNA和Ki 6 7在子宫内膜腺癌组织中的表达及其意义。 方法　采用免疫组化S P法检测正常增生期子宫内膜 10例、单纯性增生 30例、复杂性增生 30例、非典型增生 30例和子宫内膜腺癌 4 7例组织中cyclinD1、PCNA和Ki 6 7的表达。结果　cyclinD1在增生期子宫内膜组织中未见阳性表达 ,在单纯性增生、复杂性增生、非典型增生和子宫内膜腺癌组织中的阳性表达率分别为 13 3%、16 7%、30 0 %和 5 7 8%。非典型增生和子宫内膜腺癌组织阳性表达率高于增生期宫内膜、单纯性和复杂性增生 (P <0 0 5 ) ,cyclinD1蛋白表达与子宫内膜腺癌临床分期、肌层浸润和淋巴结转移呈正相关 (P<0 0 5 ) ,而与肿瘤的分化程度无关 (P >0 0 5 )。PCNA和Ki 6 7在非典型增生组标记指数 (LI)高于增生期宫内膜、单纯性和复杂性增生组 ,子宫内膜腺癌组高于非典型增生组 (P <0 0 5 ) ,PCNA和Ki 6 7LI与肿瘤的分化程度、临床分期、肌层浸润和淋巴结转移呈正相关 (P <0 0 5 )。PCNA和Ki 6 7在cyclinD1阳性表达组的LI高于阴性组 (P <0 0 5 )。结论　cyclinD1蛋白过度表达可能在子宫内膜癌的发生、发展中起重要作用 ,其作用途径可能是通过促进细胞增殖而实现的。     

Steroid receptor coactivator AIB1 in endometrial carcinoma, hyperplasia and normal endometrium: Correlation with clinicopathologic parameters and biomarkers.

Members of the p160 steroid receptor cofactor family, including AIB1 (Amplified in Breast Cancer 1) (also known as SRC-3/RAC3/ACTR/pCIP/TRAM-1), are of interest in endometrial carcinoma as they affect the function of estrogen (ER) and progesterone receptors (PR). Since it is feasible that alterations in the expression levels of coregulators can either augment ER activity or reduce the ability of PR to oppose ER action in endometrial cancers, our primary aim was to analyze expression of the AIB1 protein in endometrial carcinoma, carcinoma-associated complex atypical hyperplasia, and carcinoma-associated normal endometrium using immunohistochemistry and tissue microarrays. Expression of AIB1 was compared with other biomarkers and clinicopathologic parameters. We also tested AIB1 expression in non-carcinoma associated hyperplastic, normal secretory and proliferative endometrium to determine baseline AIB1 levels. In endometrial carcinoma, there is a higher expression of AIB1 compared to carcinoma-associated complex atypical hyperplasia (0.007) or carcinoma-associated normal endometrium (<0.001). AIB1 expression correlates with older age (P = 0.003), peri- or postmenopausal status (P = 0.002) and a higher grade of carcinomas (P = 0.04). There were no differences in the expression of additional steroid hormone receptor co-activators (SRC-1 and p300/CBP) and the co-repressor SMRT between histologic categories. AIB1 expression correlated with ER (r = 0.30, P = 0.006). The strongest correlation was between ER and PR-B isoform nuclear expression (r = 0.52, P < 0.0001). AIB1 levels were higher in non-carcinoma associated normal and hyperplastic endometrium compared to carcinoma-associated complex atypical hyperplasia and carcinoma-associated normal endometrium, and were the highest in normal secretory endometrium. In conclusion, high AIB1 expression in endometrial carcinoma is associated with parameters of poor prognosis. We propose that when AIB1 is overexpressed in endometrial carcinoma, ER action is augmented, leading to endometrial hyperplasia and progression to malignancy. Future studies correlating expression with response to hormonal therapy may be beneficial.     

Computerized image analysis of p53 and proliferating cell nuclear antigen expression in benign, hyperplastic, and malignant endometrium.

CONTEXT: The endometrium is an intrinsically dynamic tissue with great capability for regeneration and proliferation; consequently, there is some overlap between features seen in benign, premalignant, and malignant lesions. This leads to marked intrabiopsy, interbiopsy, and interobserver variability. OBJECTIVE: We studied the specificity and sensitivity of computerized image analysis of molecular markers to evaluate its potential use as a diagnostic tool. DESIGN: Specimens from 100 patients were examined and the following histologic diagnoses were assigned: proliferative endometrium (n = 10), secretory endometrium (n = 10), endometrial hyperplasia (n = 40; 30 with no atypia, 10 with atypia), and carcinoma (n = 40; 20 endometrioid, 10 serous, and 10 clear cell). All cases were evaluated immunohistochemically for p53 and proliferating cell nuclear antigen (PCNA) expression. Computerized image analysis was performed with a CAS 200 digital analyzer. RESULTS: Expression of p53 was found only in carcinomas (65%) and endometrial hyperplasia with atypia (30%). Expression of p53 was higher in the poor prognostic categories (serous carcinoma and clear cell carcinoma) than in endometrioid carcinoma. In endometrioid carcinoma, p53 expression correlated with grade. Proliferating cell nuclear antigen showed a similar pattern of results to p53 in the various carcinoma subtypes and endometrioid carcinoma grades. Endometrial hyperplasia PCNA values were the lowest among all the groups. Both carcinomas and proliferative endometrium showed higher glandular and stromal PCNA values, significantly different from endometrial hyperplasia with atypia. In proliferative endometrium, stromal PCNA was the highest among all of the groups. The p53 and PCNA results correlated with each other for carcinoma. CONCLUSIONS: Computerized image analysis correlates well with the established morphologic groups of endometrial pathology and yields results consistent with previous studies. Owing to its higher degree of sensitivity, computerized image analysis is of potential use in cases of diagnostic dilemmas and can help objectively allocate the case in the correct category (e.g., proliferative endometrium vs. endometrial hyperplasia, endometrial hyperplasia with atypia vs. endometrioid carcinoma). It is particularly useful in the evaluation of stromal changes.     

Apoptosis and the expression of Bax and Bcl-2 in hyperplasia and adenocarcinoma of the uterine endometrium

BACKGROUND: Apoptosis plays a crucial role in carcinogenesis in various tumours. This study was designed to investigate the occurrence of apoptosis and the expression of Bcl-2 and Bax proteins in endometrial tumours of corpus uteri. METHODS: Endometrial tissues were obtained from 20 patients with endometrioid adenocarcinoma, 16 patients with endometrial hyperplasia, and 4 patients with myoma uteri (which were used as controls). The occurrence of apoptosis was examined by using molecular biochemical techniques. The expression of Bcl-2 and Bax proteins was also investigated using immunohistochemical staining with appropriate antibodies. RESULTS: The labelling of DNA in situ indicated that apoptotic cells were sporadically seen in postmenopausal endometrium (5.2 +/- 2.1, n = 4) and endometrial hyperplasia without atypia (2.6 +/- 0.5, n = 9). In contrast, labelled cells were detected in atypical endometrial hyperplasia (15.9 +/- 2.2, n = 7), and their numbers increased intensely in adenocarcinoma (29.3 +/- 3.7, n = 20). Autoradiographic analysis revealed DNA laddering in many cases of carcinoma. Bcl-2 was highly immunopositive in hyperplasia without atypia (36.2 +/- 6.5%, n = 9), but was decreased in the atypical endometrial hyperplasia (16.3 +/- 4.8%, n = 7). Large fractions of the carcinoma (6.3 +/- 1.8%, n = 20) and normal endometrium (2.8 +/- 1.4%, n = 4) were immunonegative or slightly immunopositive to Bcl-2. In contrast, Bax immunoreactivity was more frequent and stronger in adenocarcinoma (43.6 +/- 4.1%, n = 20) than that in normal endometrium (17.6 +/- 6.7%, n = 4) and hyperplasia (7.2 +/- 2.2%, n = 16). CONCLUSIONS: These results suggest that cells in hyperplasia expressing Bcl-2 might have prolonged survival ability. Neoplastic cells in adenocarcinoma might show apoptosis in association with a decreased expression of Bcl-2 and an increased expression of Bax. Therefore, the frequency of apoptosis and the expression of Bcl-2 and Bax might be correlated with carcinogenesis in the uterine endometrium of humans.     

MCM7在子宫内膜腺癌中的表达及意义

目的检测微小染色体维持蛋白7(MCM7)在子宫内膜腺癌组织中的表达,探讨其表达与子宫内膜腺癌临床病理参数的关系。方法应用免疫组化方法检测MCM7在单纯性增生子宫内膜、子宫内膜不典型增生和子宫内膜腺癌组织中的表达,以及雌激素受体(ER)、孕激素受体(PR)在子宫内膜腺癌中的表达。结果 MCM7在子宫内膜单纯性增生、不典型增生以及子宫内膜腺癌中的表达逐渐增高(P<0.05),在子宫内膜腺癌的表达与患者的年龄呈正相关(>45岁,P=0.007)、肿瘤的病理学分级呈负相关(P=0.0003),并进一步发现雌激素受体(ER)、孕激素受体(PR)阴性表达的肿瘤组织中MCM7表达高于受体阳性的肿瘤组织(P=0.002;P=0.021)。结论 MCM7在子宫内膜腺癌的发生发展过程中起促进作用,这一促进作用在雌孕激素受体阴性的子宫内膜腺癌更明显。     

HSP70在早期妊娠大鼠子宫中的表达及己烯雌酚的诱导作用

目的探讨在早期妊娠大鼠子宫中热休克蛋白70(hearshockprotelns,HSP70)的表达变化以及己烯雌酚(dithylstilbestrol,DES)对子宫HSP70表达的诱导作用。方法采用免疫组织化学和图像分析技术研究正常大鼠未孕及已孕的子宫。结果①孕鼠子宫HSP70的阳性表达较未孕鼠明显增强,差异有显著性(P<0.01);②小剂量(1.25滋g/50g)大剂量(5滋g/50g)DES均可诱导大鼠子宫HSP70免疫反应阳性细胞数量显著增加(P<0.01)。结论热休克蛋白70在早期妊娠大鼠子宫内膜固有层的基质细胞及蜕膜内蜕膜细胞的表达明显增高,DES对子宫HSP70。表达具有明显诱导作用。