同源框基因HOXA11及雌激素受体在人良、恶性子宫内膜增殖组织中的表达及意义

目的:探讨同源框基因HOXA11及雌激素受体(ER)在人良、恶性子宫内膜增殖组织中的表达及意义.方法:采用Wester blot方法检测27例正常增殖期子宫内膜、35例单纯型及复杂型增殖子宫内膜、37例不典型增殖子宫内膜、31例子宫内膜腺癌组织中HOXA11和ER的表达.结果:HOXA11与ER蛋白的表达量由良性到恶性演变的子宫内膜呈下降趋势,组间比较,差异有高度统计学意义(P＜0.001);且各组子宫内膜中HOXA11与ER蛋白的表达水平呈明显正相关(r=0.971,P=0.000).结论:子宫内膜由良性到恶性演变的过程中,HOXA11与ER蛋白的表达量呈下降趋势,这两个指标对子宫内膜恶性病变的进程与预后具有一定的预测价值.     

月经周期人子宫内膜腺上皮和基质细胞HOXA11表达的差异

目的:探讨HOXA11在月经周期人子宫内膜腺上皮和基质细胞中的表达规律及其生理意义。方法:免疫组织化学方法观察38例子宫内膜腺上皮和基质细胞HOXA11蛋白质的表达;用细胞分离筛选法,分离出子宫内膜腺上皮细胞和基质细胞,采用半定量RT-PCR和Dot-blot方法分别观察HOXA11在腺上皮和基质细胞中的表达。结果:腺上皮细胞HOXA11在分泌中晚期表达量较增生期和分泌早期显著降低;基质细胞HOXA11的表达从增生期到分泌期逐渐增加,以分泌中晚期表达量最高。结论:内膜腺上皮和基质细胞HOXA11表达在分泌中晚期变化最显著,而且其表达量呈反相变化,即腺上皮表达量下降,基质细胞表达量增加。提示HOXA11基因与着床期子宫内膜的分化、成熟密切相关;其对内膜腺上皮和基质细胞的调控机制可能不尽相同。     

左旋18-甲基炔诺酮和米非司酮对分泌中期人子宫内膜HOXA11基因表达的影响

目的:通过口服孕激素类(左旋18-甲基炔诺酮,Levenorgestrel,LNG)和抗孕激素类(米非司酮,RU486)避孕药,研究孕激素对分泌中期人子宫内膜HOXA11基因表达的影响。方法:30名自愿者,于正常月经周期排卵后d7,刮取内膜组织做自身对照;实验周期在排卵前或排卵后2d,口服小剂量LNG(18例)或RU486(12例),同样在排卵后d7刮取内膜组织。用原位杂交方法检测服药子宫内膜HOXA11基因表达的变化。结果:对照组(分泌中期)内膜,间质细胞普遍表达HOXA11mRNA,而腺上皮HOXA11的表达则呈弱阳性或阴性。口服LNG后,子宫内膜形态变化不明显;内膜腺上皮HOXA11表达量进一步下降或无明显变化(即用药前后均表达阴性);间质细胞HOXA11表达增强。服用RU486后,内膜发育明显延迟,腺上皮HOXA11表达强度普遍大于对照组,而间质细胞的表达变化无明显规律。结论:孕激素对内膜腺上皮HOXA11基因的表达起负调控作用;正常分泌中期,内膜腺上皮HOXA11表达减弱或消失是内膜分化成熟的标志。     

神经细胞黏附因子在子宫腺肌病病灶中的表达及意义

目的:检测神经细胞黏附因子(NCAM)在子宫腺肌病在位内膜及异位内膜中的表达,探讨NCAM在子宫腺肌病发病中的作用。方法:采用免疫组化法检测40例子宫腺肌病标本在位内膜与异位内膜组织中NCAM的表达情况(分泌期与增生期各20期),并与20例正常子宫内膜标本进行比较。采用0~10级NRS疼痛评价量表对子宫腺肌病患者痛经程度进行评分,并与相应患者NCAM染色情况进行比较。结果:NCAM在40例子宫腺肌病在位内膜和异位内膜及19例正常内膜腺上皮中均有表达,1例正常内膜无表达,间质中无表达。异位内膜组织中NCAM表达明显高于在位内膜和正常对照组(P0.01)。在位内膜组织分泌期NCAM表达含量高于增生期(P0.05)。子宫腺肌病异位病灶NCAM表达与患者痛经程度呈正相关(r=0.84,P0.01)。结论:NCAM可能参与子宫腺肌病的发病过程,并参与子宫腺肌病痛经的发生发展,但具体分子机制尚需进一步研究。     

肿瘤坏死因子α及转化生长因子β在子宫腺肌病中的表达

目的:研究肿瘤坏死因子α(TNF-α)和转化生长因子β(TGF-β)在和子宫腺肌病中的表达及其临床意义。方法:应用免疫组化SABC技术检测正常子宫组织11份和子宫腺肌病组织33份蜡封包埋切片中TNFα与TGFβ的组织定位和表达。结果:正常子宫和子宫腺肌病组织中均存在TNFα与TGFβ的表达;正常子宫内膜腺体细胞中TNF-α与TGF-β表达强度分别高于子宫肌层和间质,分泌期高于增生期,并呈周期性变化;在子宫腺肌病组织中,TNFα与TGF-β在原位内膜中的表达强度,分泌期高于增生期,并呈周期性变化;TNF-α与TGF-β在异位子宫内膜中的表达强度分别高于原位内膜和正常子宫内膜,腺体表达强度分别高于子宫肌层和间质。结论:TNF-α和TGF-β的表达受卵巢性激素的调控;其在子宫腺肌病异位内膜中的高表达可能是子宫腺肌病发生的病理机制之一。     

孕激素及间质细胞培养液对原代培养内膜腺上皮HOXA11基因表达的影响

目的:探讨间质细胞是否参与了孕激素对子宫内膜腺上皮的调控,及其初步的作用机制。方法:将增生期子宫内膜间质细胞经激素处理后进行培养,提取培养液。用浓度为30%的提取培养液对腺上皮细胞进行原代培养,当细胞生长融合时,加入孕酮或孕雌激素培养4h、24h。提取细胞总RNA,用半定量RT-PCR方法检测腺上皮细胞HOXA11基因表达量。结果:当内膜腺上皮细胞中含有30%经孕激素处理的间质细胞培养液时,加入孕激素或孕、雌激素后其HOXA11基因,在培养4h时表达量有下降趋势;24h时,表达量下降明显;而用RU486预处理后再加入孕激素或雌孕激素,腺上皮细胞HOXA11基因表达量与对照组无差异;当上皮细胞中含有30%经RU486预处理后,再加入孕激素处理的间质细胞培养液时,孕激素或孕、雌激素对内膜腺上皮HOXA11表达的负调控作用在4h时消失;24h时,转为正调控(HOXA11基因表达量增加)。结论:孕激素对内膜腺上皮HOXA11基因的负调控作用需要问质细胞分泌的孕激素依赖因子的参与,而且由间质细胞和内膜腺上皮中的孕激素受体共同介导完成这一负调控作用。     

宫内膜和腺肌病中间丝蛋白及肌动蛋白的免疫组化表达

目的：比较子宫内膜及腺肌病腺上皮和间质的分化能力与分化方向。方法：用免疫组化ＡＢＣ法检测２０份不同生殖周期子宫内膜和腺肌病组织标本的角蛋白、波形蛋白、结蛋白及肌动蛋白α亚单位的表达情况。结果：腺肌病与子宫内膜腺上皮具有相似的角蛋白表达率，达７０％￣９０％，不受腺体分泌状态的影响；腺上皮波形蛋白表达率为８０％￣９０％，在分泌期下降到６０％（Ｐ〈０．０５），且主要局限于基底层和表面上皮；主要表达波形蛋     

血管内皮生长因子在子宫腺肌病中的表达及意义

目的:研究血管内皮生长因子(VEGF)在子宫腺肌病中的组织定位和表达,以探讨VEGF与子宫腺肌病发生的关系。方法:用免疫组化染色法检测13例子宫腺肌病患者在位及异位子宫内膜中VEGF的表达。结果:在位和异位子宫内膜组织均有VEGF阳性染色。经计算机扫描图像处理,异位组织的腺上皮和间质VEGF表达高于在位组织的腺上皮及间质(P<0.05)。结论:高表达的VEGF可能与子宫腺肌病的发生和发展有关。     

类固醇生成因子1在卵巢子宫内膜异位囊肿及子宫腺肌病病灶中的表达

目的 探讨类固醇生成因子1( SF-1)在子宫内膜异位症(内异症)患者在位内膜、卵巢内异症囊肿、子宫腺肌病病灶中的表达.方法 选择2008年1月至2010年12月在北京大学第一医院妇科住院,因子宫腺肌病合并卵巢内异症囊肿行子宫全切除术及卵巢内异症囊肿剥除术或附件切除术的患者共30例,经病理确诊子宫腺肌病合并内异症囊肿共17例作为观察组;同期因宫颈上皮内瘤变(CIN)Ⅲ行子宫全切除术的患者10例作为对照组.将观察组患者的在位内膜、卵巢内异症囊肿病灶、子宫腺肌病病灶和对照组的子宫内膜组织进行石蜡切片,免疫组化Envision二步法检测SF-1蛋白的表达.结果 两组患者在位内膜的腺体和间质细胞中均无SF-1蛋白表达;观察组卵巢内异症囊肿病灶的间质细胞核SF-1蛋白的阳性表达率为14/17,SF-1蛋白在卵巢内异症病灶的腺体细胞及子宫腺肌病病灶中均无表达.结论 卵巢内异症囊肿与子宫腺肌病病灶中SF-1蛋白表达的差异可能在疾病的发生与发展中具有重要意义.     

整合素连接激酶在子宫腺肌病中的表达及临床意义

目的:研究整合素连接激酶(ILK)在子宫腺肌症患者内膜及肌层组织中的表达及其临床意义。方法:选取2013年10月至2014年5月在山东大学齐鲁医院妇科行子宫切除术的53例患者,其中子宫腺肌病32例(腺肌病组),子宫肌瘤和宫颈上皮内瘤变21例(对照组)。采用免疫组化SP法检测ILK在对照组内膜、肌层,腺肌病组在位内膜、异位内膜及病灶肌层中的表达。采用Image-Pro Plus 6.0图像处理系统进行图像分析。结果:(1)腺肌病组在位内膜腺上皮及间质细胞中ILK表达均明显高于异位内膜及对照组正常内膜(P<0.05),且腺上皮细胞ILK的表达量与痛经程度呈明显正相关(r=0.571;P<0.05);异位内膜与对照组正常内膜比较,差异无统计学意义(P>0.05)。(2)腺肌病组内膜(在位及异位)腺上皮及间质细胞ILK的表达量均无周期性变化(P>0.05)。对照组内膜间质细胞ILK表达量增殖期较分泌期明显增加(P<0.05),腺上皮细胞ILK表达量无周期性变化(P>0.05)。(3)腺肌病组病灶肌层中ILK表达量明显高于对照组肌层(P<0.05),并与痛经程度及子宫大小呈正相关(r=0.362;P<0.05;r=0.555,P<0.05)。(4)腺肌病组病灶肌层增殖期的ILK表达水平明显高于分泌期(P<0.05),对照组肌层中ILK表达无周期性变化(P>0.05)。结论:子宫腺肌病患者在位内膜及病灶肌层组织中ILK表达显著增强,提示ILK在子宫腺肌病的发生发展中可能具有重要作用。     

Dissociated expression of Bcl-2 and Ki-67 in endometrial lesions: diagnostic and histogenetic implications.

The objective of the present study was to analyze the expression of the proliferation marker, Ki-67, and the anti-apoptotic protein, bcl-2, in various endometrial lesions. Ki-67 and bcl-2 expressions were studied in 194 specimens of endometrial hyperplasia, polyps, carcinomas, and cyclic endometrium from a defined geographic area. Results were statistically analyzed with respect to marker expression, localization to the stromal or glandular component, and intraglandular topography. The lowest glandular Ki-67 expression was seen in secretory endometrium, in polyps, and in atypical hyperplasia. The Ki-67 score was significantly higher and less heterogeneous in endometrial carcinomas than in hyperplasia (p<0.001). Endometrial hyperplasia of all types was characterized by a markedly heterogeneous glandular expression of Ki-67. The glandular expression of bcl-2 was highest in proliferative endometrium and polyps. Bcl-2 expression was significantly lower in adenocarcinomas than in hyperplastic lesions (p=0.002). Ki-67 and bcl-2 expression showed a significant association in proliferative endometrium (p=0.003). Endometrial polyps demonstrated a unique pattern of very low expression of Ki-67 and high bcl-2 expression in both stroma and glands. Our findings indicate that an imbalance between proliferation and apoptosis may be an important factor in the development of different endometrial lesions, benign as well as malignant. The specific finding of inter- and intraglandular Ki-67 heterogeneity may be valuable as an adjunct to morphology in the differential diagnosis of endometrial hyperplasia.     

Coexpression index of estrogen receptor alpha mRNA isoforms in simple, complex hyperplasia without atypia, complex atypical hyperplasia and adenocarcinoma

OBJECTIVE: Estrogen receptor isoforms are postulated to play an important role in modulating the estrogen response. To clarify the molecular mechanisms through which malignant changes are activated in endometrium, this study aims to examine the expression profiles of wild-type ER-alpha and their splice variants and to assess the number of coexisting mRNA isoforms of ER-alpha in normal endometrium as well as in endometrial hyperplasia and endometrial endometrioid adenocarcinoma. METHODS: Human endometrium and specimens including endometrial hyperplasia and endometrial cancer were obtained during surgery. Endometrial data were classified into four groups: simple hyperplasia (n=24), complex hyperplasia (n=15), atypical hyperplasia (n=11), endometrial endometrioid adenocarcinoma (n=19) (grade 1, grade 2 morphological degree) and proliferative endometrium (n=24) as a control group. Total cellular RNA was extracted from endometrial tissues using Total RNA Prep Plus. A real-time quantitative RT-PCR assay was developed to quantify the wild-type ER-alpha and ER-alpha mRNA isoforms copy numbers. We have evaluated the variation in ERs mRNA level between normal endometrium and endometrial hyperplasia and adenocarcinoma. We also evaluated the "sharing indicator". It is a factor of mRNA ER-alpha holding shares in whole mRNA it assume quotient of ER-alpha slicing variant to all variants of mRNA ER-alpha. RESULTS: It was found that the number of coexisting mRNA isoforms was significantly higher in adenocarcinoma endometrium than that evaluated for various degrees of hyperplasia endometrium and normal proliferative endometrium (p<0.05, the Kruskal-Wallis test). CONCLUSION: The risk for progression of endometrial hyperplasia to atypical hyperplasia and eventually endometrioid adenocarcinoma may be accompanied by an increase in the number of alternative splicing variants of mRNA ER-alpha.     

Leukaemia inhibitory factor (LIF) is immunohistochemically expressed in normal, hyperplastic and malignant endometrial tissue

OBJECTIVE: Leukaemia inhibitory factor (LIF) is a pleiotrophic cytokine, which might play an important role in human reproduction and endocrine-responsive tumours. Therefore, the aim of this study was to determine the frequency and tissue distribution of LIF in normal, hyperplastic and malignant endometrium. STUDY DESIGN: Paraffin-fixed endometrial tissue was obtained from normal premenopausal women (n = 15), endometrial hyperplasia (n = 20), endometroid adenocarcinoma (n = 32) and endometrial polyps (n = 9). The LIF expression was demonstrated by immunohistochemical means and evaluated with a semi-quantitative immunoreactive score. The Mann-Whitney U-test was used for statistical evaluation. RESULTS: The lowest expression of LIF was observed in endometrial adenocarcinomas compared to all groups, while endometrial polyps expressed the highest LIF immunostaining. The expression in normal human glandular cells was significantly higher during the late secretory phase than in the proliferative phase. The highest expression of LIF was observed in endometrial polyps. Simple hyperplasia showed a significantly higher LIF expression than proliferative endometrium and adenocarcinoma. Adenomatous hyperplasia (AH) grade I-III had a significantly higher LIF expression than adenocarcinoma. The lowest expression of LIF was observed in adenocarcinoma, being statistically significant compared to all groups. CONCLUSION: LIF was immunohistochemically demonstrated in normal, hyperplastic and malignant endometrial tissue, suggesting a widespread but complex role for LIF in hyperplastic and malignant endometrial growth regulation. AH I-III also expressed LIF with statistically higher immunostaining than adenocarcinoma. Since AH III can be considered as a precursor of endometrial cancer, LIF could be a marker of cell transformation.     

子宫内膜增生性疾病患者内膜细胞凋亡的研究

目的 :研究凋亡在子宫内膜增生性疾病中的作用。方法 :用改良原位末端标记技术检测 15例正常月经周期的增生期、分泌期、月经期子宫内膜 ,11例增殖性子宫内膜 ,12例子宫内膜癌 ,以及术前用孕激素治疗的 13例异常增生子宫内膜中的凋亡细胞 ,并计算其凋亡指数 (AI)。结果 :分泌期、月经期子宫内膜、增殖性子宫内膜、子宫内膜癌AI均比正常增生期子宫内膜AI高 (P <0 .0 1)。增殖症患者内膜不典型增生组AI比单纯增生、复杂增生组AI高 (P <0 .0 5 ) ;内膜癌患者低分化组AI比高分化组、中分化组AI高 (P <0 .0 5 )。结论 :细胞凋亡与正常子宫内膜周期性变化有关 ,而在增殖性和癌变子宫内膜中的异常表达可能与子宫内膜的良恶性病变有关     

Expression of claudin-3 and claudin-4 in normal, hyperplastic, and malignant endometrial tissue

To clarify the roles of claudins in endometrial tumorigenesis, we determined levels of protein and messengerRNA (mRNA) expression of claudin-3 and claudin-4 in human endometrial tissue (proliferative phase [PE, n= 25]; secretory phase [SE, n= 25]; simple hyperplasia [SH, n= 20]; complex hyperplasia [CH, n= 12]; atypical hyperplasia [AH, n= 15]; endometrioid adenocarcinoma [EEC, n= 30]) using immunohistochemistry, western blotting, and real-time polymerase chain reaction, respectively. Morphologic changes of tight junctions (TJs) were also observed in normal, hyperplastic, and malignant endometrial tissue. Absence or weak staining for claudin-3 and claudin-4 was observed in PE, SE, SH, and CH, while medium to intense staining was detected in AH and EEC. Staining of claudin-3 and claudin-4 was predominantly localized to the glandular epithelial cell membrane. Expression of claudin-3 and claudin-4 was significantly increased in the groups of AH and EEC in comparison with the groups of CH, SH, and normal cyclic endometrium at both protein and mRNA levels. The highest expression was observed in EEC. Although no relevance was found with regard to FIGO stage and histologic grade, overexpression of claudin-3 and claudin-4, especially claudin-4, significantly correlated with myometrial invasion. Transmission electron microscopy analysis indicated morphologic disruptions of TJs may lag behind the increase of claudins expression. These results demonstrate that claudin-3 and claudin-4 are strongly expressed in AH and EEC, but less frequently in normal endometrium. The upregulation of claudins expression during endometrial carcinogenesis suggests their potential utility as diagnostic and prognostic biomarkers.     

子宫内膜癌中fhit、survivin的表达及临床意义

目的 :探讨脆性组氨酸三联体基因蛋白fhit和凋亡抑制蛋白survivin在子宫内膜癌中的表达及临床意义。方法 :用免疫组化S P法检测 12例正常子宫内膜 ,15例不典型增生子宫内膜 ,4 2例子宫内膜癌组织中fhit蛋白、survivin蛋白的表达。结果 :fhit蛋白在子宫内膜癌中的阳性率明显低于正常子宫内膜或不典型增生子宫内膜 ,差异有显著性 (P <0 .0 5 )。survivin在正常子宫内膜、不典型增生子宫内膜、子宫内膜癌中的阳性表达率分别为 16 .7%、6 6 .7%、90 .5 % ,差异有显著性 (P <0 .0 5 ) ;在子宫内膜癌组织中 ,随组织学病理分级的增加、手术临床分期的进展、肌层浸润程度的加深和淋巴结的转移 ,fhit蛋白表达阳性率逐渐下降 ,survivin表达强阳性率则逐渐上升 ,差异有显著性 (P <0 .0 5 ) ;fhit蛋白、survivin蛋白表达呈负相关性 (r=- 0 .76 9,P =0 .0 0 0 )。结论 :fhit、survivin在子宫内膜癌的发生、发展过程中起着重要的作用 ,联合检测可为子宫内膜癌的早期诊断、进一步治疗及预后判断提供必要的理论依据。     

Tenascin expression in normal, hyperplastic, and neoplastic endometrium.

Tenascin (TN) is an extracellular matrix glycoprotein (ECM) that participates in embryogenesis and carcinogenesis. The aim of this study was to investigate immunohistochemically the expression of TN in the normal, hyperplastic, and neoplastic endometrium (endometrial adenocarcinoma). In the adenocarcinomas, the results were correlated with patient age, menopausal status, stage, grade, myometrial invasion, and vascular invasion. TN expression was studied in the following cases: proliferative endometrium (10 cases), early secretory endometrium (10), secretory endometrium (10), simple hyperplasia (15), complex hyperplasia (15), atypical hyperplasia (15), and endometrial adenocarcinomas (25). Staining of basal membranes and the cytoplasm of the stromal and epithelial cells was evaluated semiquantitatively. Positive staining was observed in the vascular and glandular basal membranes, stromal cells, and epithelial cells of proliferative, hyperplastic, and neoplastic endometrium. The difference in percentage of stained stromal cells between the neoplastic and the nonneoplastic (proliferative and hyperplastic) endometrium was significant (p<0.005). However, the percentage of stained epithelial cell area in hyperplasia was significantly higher than that of adenocarcinoma and functional endometrium (p<0.005). We conclude that TN is an extracellular matrix glycoprotein that plays a role in proliferation and possibly endometrial carcinogenesis.     

Objective risk definition for endometrial lesion spectrum: a diagnostic algorithm

OBJECTIVE: Investigations for risk definition in endometrial lesion spectrum still go on. In this study, molecular, morphometric, immunohistochemical techniques were combined with conventional morphology to realize whether an algorithm is definable for risk assessment to progress an invasive carcinoma in endometrial glandular lesion spectrum is possible. METHODS: The study was carried out on 20 benign endometria, 35 hyperplasias, and 20 adenocarcinoma cases. Clonality of glandular cells, the volume percent of endometrial stroma (VPS), PTEN inactivation, and proliferative index (PI) were evaluated. Statistical analysis was evaluated to set an objective algorithm. RESULTS: All benign tissues had polyclonal (PC), whereas all malignant tissues had monoclonal (MC) glandular epithelium. Of hyperplasias, 19 were MC, and 16 were PC. VPS value of 55% had 100% sensitivity, and 80% specificity (n=67) to distinguish MC from PC. Neither PTEN nor PI data augmented the specificity or the sensitivity of clonal distinction. CONCLUSION: Clonality and VPS values were found to be significant in differential of endometrial lesions. With this rationale, a diagnostic algorithm for endometrial risk lesions was set. This algorithm is based on HE morphology, VPS and clonality findings, and has 100% sensitivity and specificity to discriminate neoplastic endometrium from hyperplasia.     

Expression pattern of PAX2 in hyperplastic and malignant endometrium

Background

PAX2 is a member of paired box gene family and expressed during development of urogenital system. This study aimed to evaluate PAX2 expression pattern in hyperplastic and malignant endometrial tissues in comparison to non-pathological endometrial changes and to investigate the presence of any correlation between the PAX2 expression and tumor behavior.

Methods

The study was performed on the archival material of 121 endometrial tissues including complex hyperplasia (n?=?18), complex atypical hyperplasia (n?=?20), and endometrioid type adenocarcinoma (n?=?47) as study groups, and proliferative endometrium (n?=?21) and atrophic endometrium (n?=?16) as control groups. One representative block for each case was selected for immunohistochemical evaluation. Sections with 4??m thickness were cut from the blocks and incubated with PAX2 rabbit anti-human polyclonal antibody.

Results

PAX2 nuclear staining was detected in all of the endometrial tissues. The mean percentages of PAX2 staining cells were 80.8, 96.7, 88.6, 92.7, and 99.2% with proliferative endometrium, atrophic endometrium, complex hyperplasia, complex atypical hyperplasia, and adenocarcinoma, respectively (Kruskal?CWallis; P?Conclusions PAX2 is expressed in hyperplastic and malignant endometrium as well as proliferative and atrophic endometrium. As the neoplastic lesion progresses from a premalignant state to endometrial cancer, PAX2 expression increases. These findings suggest that PAX2 may contribute to the development of endometrial cancer.     

芳香化酶蛋白及性激素受体等在子宫内膜病变组织中的表达变化及意义

目的探讨芳香化酶蛋白、雌激素受体（ER）、孕激素受体（PR）及细胞增殖相关核抗原Ki67在子宫内膜病变组织中的阳性表达率及其在子宫内膜病变的诊断和治疗中的价值。方法采用免疫组化链霉菌抗生物素蛋白-过氧化物酶链接（SP）法,检测148例子宫内膜病变患者（观察组,其中子宫内膜增殖症30例,轻、中、重度子宫内膜非典型增生各10例,子宫内膜腺癌88例）及30例因患宫颈原位癌行子宫全切除术患者的正常子宫内膜组织（对照组,其中增殖期及分泌期子宫内膜各15例）中芳香化酶蛋白、ER、PR及Ki67的阳性表达率。结果（1）观察组子宫内膜增殖症、子宫内膜非典型增生组织芳香化酶蛋白、ER、PR、Ki67的阳性表达率与对照组增殖期内膜比较,差异无统计学意义（P〉0．05）;（2）观察组子宫内膜腺癌组织芳香化酶蛋白阳性表达率为64％（56／88）,与子宫内膜非典型增生（23％,7／30）、子宫内膜增殖症（13％,4／30）及对照组（0／15）比较,差异均有统计学意义（P〈0．01）;（3）芳香化酶蛋白的阳性表达率与子宫内膜腺癌的临床分期（Ⅰ期61％、Ⅱ期77％、Ⅲ期70％、Ⅳ期67％）、肿瘤细胞分化级别（高分化64％,中分化74％,低分化58％）、有无淋巴转移（转移59％,无转移67％）无明显相关性（P〉0．05）。（4）子宫内膜腺癌组织中ER、PR、Ki67的阳性表达率分别为22％（19／88）、19％（17／88）、41％（36／88）,与对照组分别比较,差异均有统计学意义（P〈0．01）。结论子宫内膜良性病变组织与正常内膜组织中,芳香化酶蛋白表达无明显差异;子宫内膜腺癌组织中芳香化酶蛋白的过度表达,可作为诊断子宫内膜腺癌的指标之一。