子宫内膜样腺癌中LYVE-1的表达与淋巴道转移关系

目的:观察子宫内膜样腺癌中淋巴管的分布特点及增殖状态,研究肿瘤淋巴管生成与淋巴道转移的关系。方法:收集80例子宫内膜样腺癌及其相应的正常子宫内膜组织标本,采用免疫组化双标记技术,运用淋巴管特异标记物LYVE-1检测微淋巴管密度(MLD),LYVE-1与Ki-67进行双标免疫组化染色检测淋巴管增殖活性。结果:子宫内膜样腺癌肿瘤边缘区淋巴管多呈管样扩张状,而肿瘤其他区域多为呈闭索状。子宫内膜样腺癌组织中MLD较正常子宫内膜组织显著性增高(P<0.05),MLD在肿瘤边缘区、低分化子宫内膜样腺癌组、伴淋巴结转移组中显著增高,在临床分组间无显著差异。子宫内膜样腺癌中淋巴管内皮细胞Ki-67指数较正常子宫内膜组织增高(P<0.05),肿瘤边缘区Ki-67阳性表达的微淋巴管比肿瘤其他区域、有淋巴结转移组比无淋巴结转移组有显著性增高(P<0.05)。结论:子宫内膜样腺癌组织中存在淋巴管生成,淋巴管主要分布在肿瘤边缘区且淋巴管内皮细胞增殖活性增高。淋巴管密度与子宫内膜样腺癌分化程度、淋巴道转移有关,与临床分期无明显关系。检测淋巴管密度和增殖状态对预测淋巴道转移可提供一定理论的依据。     

子宫内膜癌中CXCR2的表达及其与血管生成的关系

目的:研究IL-8受体CXCR2在子宫内膜腺癌组织中的表达及其与血管生成的关系。方法:应用免疫组化SP法,检测45例子宫内膜腺癌、8例增生过长组织、8例不典型增生组织、16例正常内膜组织中CXCR2的表达,并检测子宫内膜癌中微血管密度。结果:(1)相对于非腺癌组织,CXCR2在子宫内膜癌细胞腔侧表达明显减少(P<0.05),非腔侧表达明显增加(P<0.05),并出现胞浆表达;(2)子宫内膜癌期别越晚,CX-CR2非腔侧及胞浆表达越强,与病理分级无关;(3)子宫内膜癌组织中,CXCR2非腔侧及胞浆表达与微血管密度呈正相关(P<0.05)。结论:CXCR2在癌细胞非腔侧、胞浆的表达与子宫内膜癌发生、发展相关,并在促血管生成中有重要作用。     

子宫内膜样腺癌中LYVE-1的表达与淋巴道转移关系

目的:观察子宫内膜样腺癌中淋巴管的分布特点及增殖状态,研究肿瘤淋巴管生成与淋巴道转移的关系。方法:收集80例子宫内膜样腺癌及其相应的正常子宫内膜组织标本,采用免疫组化双标记技术,运用淋巴管特异标记物LYVE-1检测微淋巴管密度(MLD),LYVE-1与Ki-67进行双标免疫组化染色检测淋巴管增殖活性。结果:子宫内膜样腺癌肿瘤边缘区淋巴管多呈管样扩张状,而肿瘤其他区域多为呈闭索状。子宫内膜样腺癌组织中MLD较正常子宫内膜组织显著性增高(P<0.05),MLD在肿瘤边缘区、低分化子宫内膜样腺癌组、伴淋巴结转移组中显著增高,在临床分组间无显著差异。子宫内膜样腺癌中淋巴管内皮细胞Ki-67指数较正常子宫内膜组织增高(P<0.05),肿瘤边缘区Ki-67阳性表达的微淋巴管比肿瘤其他区域、有淋巴结转移组比无淋巴结转移组有显著性增高(P<0.05)。结论:子宫内膜样腺癌组织中存在淋巴管生成,淋巴管主要分布在肿瘤边缘区且淋巴管内皮细胞增殖活性增高。淋巴管密度与子宫内膜样腺癌分化程度、淋巴道转移有关,与临床分期无明显关系。检测淋巴管密度和增殖状态对预测淋巴道转移可提供一定理论的依据。     

体外实验中肝细胞生长因子诱导子宫内膜癌细胞的侵袭作用

肝细胞生长因子(hepatocyte growth factor,HGF)是一种多向生长因子,由成纤维细胞和其他间叶细胞所分泌。其受体Met是一种跨膜的酪氨酸激酶受体,主要由上皮细胞表达。已有研究表明,在许多人体组织包括子宫内膜中,HGF与Met之间的相互作用可调节细胞的增殖和运动;HGF还可以调节组织的再生与修复,如月经期后子宫内膜的再生;此外,HGF/Met与肿瘤浸润有关,在体外实验中HGF可刺激多种恶性肿瘤细胞系的浸润功能,并与某些     

子宫腺肌病组织中PTTG的表达与微血管密度和b-FGF的关系

目的探讨子宫腺肌病患者异位内膜组织中PTTG、b-FGF的表达以及在新生血管生成过程中的作用。方法采用原位杂交技术,检测子宫腺肌病患者在位内膜和异位内膜(35例)组织中PTTG mRNA的表达,采用免疫组化SP方法检测PTTG、b-FGF蛋白的表达水平,CD34标记血管内皮并计数微血管密度(MVD)。以非子宫腺肌病患者正常内膜(18例)作为对照。结果PTTG在对照组正常内膜不表达或弱阳性表达,实验组在位内膜中弱阳性表达或阳性表达,异位内膜组织中阳性或强阳性表达(P<0.05);b-FGF在正常内膜、在位与异位内膜组织中的表达分别依次增强(P<0.05),MVD在异位内膜和在位内膜的表达明显高于正常对照组内膜,异位内膜高于在位内膜(P<0.05);等级相关分析表明,PTTG、b-FGF表达与MVD呈正相关。结论子宫腺肌病异位内膜组织中PT-TG、b-FGF和MVD高表达,三者呈正相关,因此推断,PTTG通过激活b-FGF的转录,在子宫腺肌病组织血管生成过程发生作用。     

skp2和p27~(kip1)在子宫内膜样癌组织中的表达

目的:检测子宫内膜样癌组织中skp2和p27kip1mRNA及其蛋白的表达,探讨其在子宫内膜样癌发生、发展中的意义。方法:采用半定量逆转录聚合酶链反应法(RT-PCR)检测37例子宫内膜样癌组织中skp2mRNA和p27kip1mRNA的表达,并进行半定量分析;应用免疫组化(PV-6000)二步法检测skp2和p27kip1蛋白的表达,以24例正常子宫内膜作为对照。结果:skp2mRNA平均表达水平在子宫内膜样癌组织中为0.79±0.10,正常子宫内膜为0.24±0.02,两者比较差异有统计学意义(P<0.01)。p27kip1mR-NA在子宫内膜样癌组织和正常内膜组织中表达无明显差异。子宫内膜样癌组织中skp2蛋白阳性表达率为78.38%,高于正常子宫内膜组织的4.17%,两者比较差异有统计学意义(P<0.01)。p27kip1蛋白在内膜癌组织阳性表达率低于正常内膜组织(48.65%vs79.17%),差异有统计学意义(P<0.05)。skp2 mRNA及蛋白表达与病理分级、淋巴结转移及肌层浸润深度呈明显正相关(P<0.05);p27kip1蛋白表达则与病理分级、淋巴结转移及肌层浸润深度呈明显负相关(P<0.05),两者均与年龄及手术病理分期无关(P>0.05)。子宫内膜样癌组织中skp2蛋白表达与p27kip1蛋白表达呈负相关(P<0.05)。结论:子宫内膜样癌组织中skp2 mRNA及蛋白高表达,p27kip1蛋白低表达,参与了子宫内膜样癌的发生、发展过程,并有可能成为子宫内膜样癌的早期诊断和治疗的新靶点。     

VEGF和CD31在子宫内膜样腺癌中的表达及其临床意义

目的:检测血管内皮生长因子(VEGF)和CD31在不同子宫内膜组织中的表达情况。方法:采用免疫组化方法检测VEGF、CD31在52例子宫内膜样腺癌组织、22例子宫内膜不典型增生组织及21例正常子宫内膜组织中的表达,对结果进行量化分析。结果:(1)VEGF在正常子宫内膜组织、不典型增生组织及子宫内膜样腺癌中表达的阳性率分别为23.8%、31.8%、65.4%;CD31在正常子宫内膜组织、不典型增生组织及子宫内膜样腺癌组织中标记的微血管密度(microvessel density,MVD)分别为23.6±11.7、31.5±17.7、51.9±21.1。VEGF的阳性表达及CD31-MVD(CD31标记的MVD)在子宫内膜样腺癌组织中明显高于不典型增生及正常子宫内膜组织(P0.05)。(2)VEGF在子宫内膜样腺癌中的表达,与淋巴结转移有关(P0.05)。CD31-MVD与肿瘤分期、浸润肌层深度、组织学类型有关(P0.05)。(3)在子宫内膜样腺癌组织,VEGF表达与CD31-MVD无明显相关性(r=0.095,P=0.504)。结论:VEGF表达、CD31-MVD在子宫内膜样腺癌组织中增高,可能促进子宫内膜样腺癌的发生发展及转移浸润。     

肾上腺髓质素及其降钙素受体样受体与子宫内膜腺癌微血管密度的相关性

目的探讨肾上腺髓质素(AM)及其受体——降钙素受体样受体(CRLR)在子宫内膜腺癌组织中的表达与子宫内膜腺癌微血管密度(MVD)的相关性。方法免疫组化法检测2006年1月至2010年1月中国医科大学附属第一医院以及解放军202医院收治的15例子宫内膜单纯性增生、21例子宫内膜不典型增生、50例子宫内膜腺癌组织中AM及CRLR蛋白表达;利用CD34免疫组化法检测组织内MVD,并研究与临床病理学参数的关系。结果 AM在子宫内膜腺癌中的表达高于单纯性增生组织(P<0.05);CRLR蛋白在子宫内膜腺癌中的表达高于单纯性增生、不典型增生组织(P<0.05);在子宫内膜腺癌中,AM与CRLR的蛋白表达呈正相关(r=0.399,P=0.004),AM与CRLR的表达均与肿瘤的MVD呈正相关(P<0.05)。结论 AM及其受体CRLR与子宫内膜腺癌的发生有关,并且参与肿瘤的血管发生。     

NLRC3对子宫内膜样癌作用的研究

目的:探讨NLR家族含CARD结构蛋白3(NLRC3)在子宫内膜癌组织中的表达情况及其对子宫内膜癌细胞系生物学行为的影响。方法:采用GEPIA数据库分析子宫内膜癌患者NLRC3表达水平及其与无病生存率的关系。免疫组化、Western blot法检测NLRC3在子宫内膜样癌组织、癌旁组织、对照组子宫内膜组织中的表达。Ishikawa(ISK)、KLE细胞转染过表达NLRC3慢病毒,细胞平板克隆、划痕愈伤实验、Transwell迁移及侵袭实验检测NLRC3对体外细胞增殖、迁移、侵袭的影响。Western blot实验检测过表达NLRC3对上皮间质转化(EMT)的影响。构建裸鼠皮下成瘤模型,检测过表达NLRC3对肿瘤生长的影响。结果:GEPIA数据库分析显示,NLRC3在子宫内膜癌组织中低表达,较高水平NLRC3与较好的无病生存率有关(P<0.05)。免疫组化、Western blot实验结果与数据库分析一致,NLRC3在子宫内膜样癌组织中的表达水平低于正常子宫内膜组织、配对癌旁组织(P<0.05),NLRC3表达随肿瘤病理分化程度降低而逐渐降低。ISK、KLE细胞过表达NLRC...     

PTEN蛋白在卵巢子宫内膜异位囊肿及卵巢子宫内膜样癌组织中的表达及临床意义

目的 探讨卵巢子宫内膜异位囊肿及卵巢子宫内膜样癌组织中抑癌基因PTEN蛋白表达及意义.方法 利用免疫组化SP法和蛋白质免疫印迹法检测1985-2005年中国医科大学附属第一医院妇科手术切除的卵巢子宫内膜异位囊肿30例、卵巢子宫内膜样癌标本30例和正常增生期子宫内膜20例组织中PTEN蛋白的表达.结果 PTEN蛋白主要定位于细胞浆中,在正常子宫内膜均为阳性表达,在卵巢子宫内膜异位囊肿组织中染色强度和范围较正常子宫内膜弱(0.77±0.08对1.59±0.12,P<0.05);而在卵巢子宫内膜样癌组织中表达明显下降,与正常子宫内膜和卵巢子宫内膜异位囊肿比较,差异有统计学意义(分另q为0.55±0.08对1.59±0.12,0.55±0.08对0.77±0.08,P<0.05),且与组织分化程度、临床病理分期及有无子宫内膜异位症病史有关;分期越晚,分化程度越低,蛋白表达越少.结论 PTEN蛋白失活可能是卵巢子宫内膜异位囊肿向卵巢子宫内膜样癌发生过程中的重要事件,且检测glEN蛋白表达对判断患者预后具有一定意义.     

Immunoexpression of hepatocyte growth factor and c-Met receptor in the eutopic endometrium predicts the activity of ectopic endometrium

OBJECTIVE: To investigate the mitogenic and angiogenic activity of the eutopic and ectopic endometrium throughout the menstrual cycle and to examine whether the activity of the eutopic endometrium is useful to predict greater activity of the ectopic endometrium. DESIGN: Controlled clinicopathologic study using intact tissue. SETTING: Nagasaki University School of Medicine, Nagasaki, Japan. PATIENT(S): Fifteen infertile women with pelvic endometriosis and 10 women without endometriosis undergoing laparoscopy. INTERVENTION(S): Biopsies from the ectopic endometrium and the corresponding eutopic endometrium were collected. Immunohistochemical staining was performed using respective antibodies, and a computer analyzed modified quantitative-histogram (Q-H) score was used to quantify immunostaining. MAIN OUTCOME MEASURE(S):The immunoreactions of hepatocyte growth factor (HGF), its receptor, c-Met, vascular endothelial growth factor (VEGF), proliferating cell nuclear antigen (PCNA), and von Willebrand factor (VWF) in eutopic and ectopic endometrium were examined, and their relation with different revised American Society for Reproductive Medicine (r-ASRM) stages and the morphology of endometriosis was evaluated. RESULT(S): The immunoexpressions of HGF and c-Met were significantly higher in the eutopic endometrium of patients with endometriosis than in that of controls. The Q-H scores of HGF, c-Met, VEGF, PCNA, and microvessel density (MVD) were markedly higher in red peritoneal lesions when compared with other lesions. The Q-H scores did not reveal r-ASRM stage-dependent variation in any of these markers. We observed a significant correlation between the immunoexpressions of HGF, c-Met, and PCNA or microvessel counts. When we combined the Q-H scores of the glandular epithelium and stroma, we found that increased activity of the eutopic endometrium as measured by the immunoreaction of HGF, c-Met, VEGF, PCNA, and MVD was similar to highly active red lesions and was significantly higher than that of controls and other lesions. CONCLUSION(S): Immunoexpression of HGF and c-Met in the eutopic endometrium of patients with pelvic endometrioisis is possibly useful to predict greater activity of the ectopic endometrium.     

Expression of the cell-cycle regulatory proteins (cyclins D1 and E) in endometrial carcinomas: correlations with hormone receptor status, proliferating indices, tumor suppressor gene products (p53, pRb), and clinicopathological parameters

PURPOSE OF INVESTIGATION: This study aimed to investigate the immunohistochemical expression of cyclins D1 and E in normal, hyperplastic and neoplastic endometrium, and their correlation with proliferative activity and clinicopathological features. METHODS: We carried out immunohistochemical techniques on archived material of formalin-fixed paraffin-embedded tissues using the antibodies against the cyclins D1 and E, PR-ER, p53, Ki67 (MIB1) and pRb with the streptavidin-biotin-peroxidase method in a total of 20 cases of normal endometrium, 32 cases of hyperplastic endometrium and 66 cases of endometrial carcinomas. RESULTS: Cyclin D1 and E immunoreactivity was observed in the nuclei of tumour cells in 18.2% and 39.1%, respectively, of the cases of endometrial carcinomas. Cyclin D1 labelling index was not significantly correlated with any of the clinicopathologic parameters examined. However, there was a significant correlation between the cyclin E labelling index and histological grade of carcinoma (p = 0.00096), which increased significantly with histological grades of malignancy. We also detected a significant correlation between cyclin E and PCNA (p < 0.0001) as well as with the tumor suppressor genes p53 and pRb (p = 0.052 and 0.0002, respectively) in endometrioid endometrial carcinoma. CONCLUSION: Our results indicate that cyclin E overexpression may be involved in the development and/or proliferation and differentiation of human endometrioid endometrial carcinoma. Immunoexpression of cyclin D1 does not appear to be associated with cell-cycle progression in the benign or malignant endometrium.     

Microvessel density (MVD) as a prognosticator in endometrial carcinoma

PURPOSE: To assess microvessel density (MVD) as a marker for angiogenesis in endometrial carcinoma (EC) and normal endometrium at the proliferative and secretory phase, and to determine its prognostic value on survival among cases with EC. METHODS: Forty-three endometrial carcinoma cases were surgically staged and recruited for this case-control study. Tissue specimens from hysterectomies due to benign conditions (uterine descensus, myoma uteri, chronic pelvic pain, adenomyosis), that belonged to proliferative (n = 10) and secretory (n = 10) endometrium (n = 10), were studied as the control group (n = 20). MVD was assessed in hot areas where a high density of microvessels were detected within tumoral tissue and normal endometrium at proliferative and secretory phases. Among EC, various prognosticators such as tumor stage, histological and nuclear grade, tumor size, lympho-vascular space involvement (LVSI), cervical involvement, myometrial invasion, adnexal and lymph node involvement, peritoneal cytology and MVD were analysed in regard to survival. RESULTS: The mean age of cases with EC was 58.3 +/- 1.4. MVD was apparently high in EC cases (p < 0.05). Among control cases, endometrium from proliferative and secretory phases of the menstrual cycle was not statistically different (48.5 +/- 3.6 vs 47.4 +/- 3.8, respectively). MVD was correlated with high surgical stage (p < 0.001), cervical involvement (p = 0.01), adnexal involvement (p = 0.04), lympho-vascular space involvement (p = 0.02), pelvic and para-aortic lymph node metastasis (p < 0.001) and positive peritoneal cytology (p < 0.001). On univariate analysis, with a MVD cut-off value of 81/0.739 mm2, surgical stage (p < 0.001), LVSI (p < 0.001), retroperitoneal lymph node involvement (p < 0.001), adnexal metastasis (p < 0.001), peritoneal cytology (p = 0.005) and MVD count (p < 0.001) appeared to be independent factors for survival. On multivariate analysis, only pelvic lymph node involvement (p = 0.03) and MVD (p = 0.02) were found to be independent prognosticators on survival. CONCLUSIONS: Angiogenesis is apparent in both initial and further evolution of a tumoral process. MVD appears to have a substantial prognostic value on survival in EC cases.     

PELP1在Ⅱ型子宫内膜癌组织中的表达及其与ER相关性研究

目的:探讨脯氨酸、谷氨酸和亮氨酸富集蛋白1(PELP1)在II型子宫内膜癌中的表达及其与雌激素受体(ER)的相关性。方法:免疫组化法检测84例子宫内膜癌及40例正常子宫内膜组织中PELP1和ER表达水平并对其进行相关性分析。结果:I型子宫内膜癌及增殖期子宫内膜组织中PELP1、ER阳性表达率高于II型子宫内膜癌及分泌期子宫内膜组织,差异均有统计学意义(P0.05);II型子宫内膜癌与分泌期子宫内膜组织比较,差异均无统计学差异(P0.05)。Pearson相关分析提示,PELP1与ER在I型子宫内膜癌组织中表达量呈正相关(rs=0.348,P=0.01),而在II型子宫内膜癌组织中无相关性(rs=0.268,P=0.144)。结论:PELP1在II型子宫内膜癌组织中的表达较少,且与ER表达无明显相关性。     

Glycoprotein CD44 expression in normal, hyperplasic and neoplastic endometrium. An immunohistochemical study including correlations with p53, steroid receptor status and proliferative indices (PCNA, MIB1)

PURPOSE OF INVESTIGATION: We have studied by immunohistochemistry the presence and localization of CD44, estrogen and progesterone receptors, p53 and proliferative associated indices (MIB1, PCNA) in archival endometrial tissue, in order to determine their diagnostic and prognostic value as well as the possible correlations between them. METHODS: We examined 186 samples of endometrial tissue (100 endometrial carcinomas of endometrioid type, 40 cases of hyperplasia and 46 of normal endometrium). Patient records were examined for FIGO stage, grade, and depth of myometrial invasion, histology, and lympho-vascular space invasion. RESULTS: Strong membranous immunostaining (> 10% of neoplastic cells) was observed in 45% of the carcinomas. A statistically significant correlation was found in the expression of protein in stromal cells, when compared with epithelial cells (p < 0.0001). Immunohistochemical expression of CD44 was significantly lower in cancer cases than in normal endometrium, mainly in the secretory phase (p < 0.0001). CD44 positive cases by immunohistochemistry failed to show any statistical correlation with tumor grade or with vessel invasion. The expression of the protein was lower in FIGO Stage II compared with Stage I (p = 0.03). A positive relation of CD44 expression with progesterone receptor status (p = 0.02) was detected. CD44 expression was also positively associated with the proliferation associated with the proliferative index MIB1 (p = 0.001). CONCLUSION: CD44 is closely related to the secretory phase of the normal menstrual cycle and its expression is decreased in hyperplasia (simple or complex with or without atypia) and in cancer cases. These observations suggest that decreased CD44 expression might be functionally involved in the multiple mechanisms of the development and progression of endometrial lesions.     

PTEN、P27基因甲基化及蛋白表达与子宫内膜癌发生发展的关系

目的:探讨PTEN及P27基因甲基化状态及其蛋白表达与子宫内膜癌发生发展的关系。方法:用甲基化特异性PCR检测36例子宫内膜癌、17例子宫内膜增生症及27例正常子宫内膜组织中的PTEN及P27基因甲基化情况;应用免疫组化Elivision二步法检测PTEN、P27基因在以上3种组织中蛋白表达情况。结果:在子宫内膜癌及子宫内膜增生症中PTEN及P27基因甲基化率明显高于正常子宫内膜(P<0.05),在子宫内膜癌中PTEN及P27蛋白表达率明显低于子宫内膜增生症及正常子宫内膜(P<0.05)。同时,PTEN蛋白表达与P27蛋白表达呈正相关(r=0.491,P=0.005)。结论:PTEN及P27基因甲基化可能参与子宫内膜癌的发生发展;P27基因甲基化可能是子宫内膜癌早期分子事件,可作为子宫内膜癌发生的预测及预防的靶点;在子宫内膜癌中,PTEN蛋白与P27蛋白表达间存在正向调控关系。     

子宫内膜癌与细菌感染及炎症介质IL-6、IL-11的关系

目的了解子宫内膜癌组织中细菌感染及炎症因子白介素-6（IL-6）、白介素-11（IL-11）表达情况,探讨子宫内膜癌与炎症的关系。方法选取2011年6月至2012年2月北京大学人民医院妇产科子宫内膜癌和正常子宫内膜组织标本各27例,分别行细菌涂片革兰染色及细菌培养,同时采用免疫组织化学染色方法检测IL-6、IL-11的表达情况。结果 27例子宫内膜癌组织中,5例细菌涂片革兰染色阳性,5例细菌培养阳性;27例正常子宫内膜组织中,4例细菌涂片革兰染色阳性,3例细菌培养阳性,两者比较,差异均无统计学意义（P〉0.05）。子宫内膜癌组织中炎症因子IL-6、IL-11阳性表达率高于正常子宫内膜（P〈0.05）。结论子宫内膜癌组织和正常子宫内膜组织细菌培养阳性率无差异,子宫内膜癌组织中炎症因子IL-6、IL-11阳性表达率高,表明炎症因子可能与子宫内膜癌的发生有关。     

cyclinD1、p16蛋白在子宫内膜癌中的表达及其临床意义

目的 :探讨cyclinD1、p16与子宫内膜癌发生与发展的关系。方法 :用免疫组化SP法检测了 50例子宫内膜癌、2 2例子宫内膜不典型增生、10例正常子宫内膜组织中cyclinD1、p16蛋白的表达情况。结果 :cyclinD1蛋白在正常子宫内膜、内膜不典型增生、子宫内膜癌中的表达率分别为 0 ( 0 /10 )、2 2 .73% ( 5/2 2 )、4 0 .0 0 % ( 2 0 /50 ) ,其中子宫内膜癌与正常内膜差异有显著性 (P <0 .0 5)。p16蛋白在内膜癌的表达率为 4 6.0 0 % ,明显低于正常内膜组织的 90 .0 0 % (P <0 .0 5)。 50例内膜癌中 ,cyclinD1蛋白在G2 、G3级及临床Ⅱ～Ⅲ期中的表达率分别高于G1级及临床Ⅰ期 (P <0 .0 5) ,复发组表达率高于未复发组 (P <0 .0 5)。p16蛋白表达与子宫内膜癌的细胞分级、临床分期及预后有关 (P <0 .0 5) ,p16蛋白表达阴性者分化差 ,分期晚 ,复发率高。相关性分析显示 ,cyclinD1与p16表达呈负相关 ,二者协同异常表达者生物学行为较差。结论 :cyclinD1、p16与子宫内膜癌的发生、发展密切相关 ,二者异常表达提示子宫内膜癌复发率高、预后差     

子宫内膜癌PTEN蛋白表达及其临床意义

目的 :探讨抑癌基因第 10染色体同源丢失性磷酸酶 -张力蛋白基因 (PTEN)蛋白表达与子宫内膜癌的发生、发展及复发的关系。方法 :采用免疫组织化学S P法检测PTEN蛋白在 5 0例子宫内膜癌、12例不典型增生子宫内膜及 10例正常子宫内膜组织的表达。结果 :5 0例子宫内膜癌中PTEN蛋白表达率为 5 6 0 0 % ,明显低于正常子宫内膜以及不典型增生子宫内膜中的表达 (10 0 0 0 %、91 0 0 % ) (P <0 0 5 )。PTEN蛋白在无肌层浸润或肌层浸润≤ 1/ 2的子宫内膜癌中阳性表达率为 76 0 0 % ,肌层浸润 >1/ 2或有淋巴结转移者为 36 0 0 % ,与肌层浸润程度显著相关 (P <0 0 5 ) ,且Ia Ib期与Ic期相比也有统计学差异 ;但与子宫内膜癌的组织学分级、有无复发无关 (P >0 0 5 )。结论 :抑癌基因PTEN蛋白表达缺失在子宫内膜癌的发生、发展、浸润及复发过程中有一定作用。