共查询到19条相似文献,搜索用时 78 毫秒
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目的 研究Lumican基因在大肠癌及癌旁正常组织中的表达,并探讨其与大肠癌生物学行为及预后的关系.方法 应用免疫组织化学方法,检测205例大肠癌原发灶及50例癌旁正常组织中lumican基因表达情况,观察其表达与大肠癌生物学行为及预后的关系.结果 Lumican在大肠癌组织中阳性表达率为75.61%(155/205);而在大肠癌旁正常组织中Lumican表达阳性率仅为12.0%(6/50),且均为弱阳性表达.Lumican表达水平与肿瘤浸润深度和病理分型密切相关(x2=16.201,P=0.013;x2=9.506,P=0.029),而与肿瘤分期和淋巴结转移无关(x2=15.457,P=0.079;x2=1.887,P=0.596).Lumican表达阴性组、弱阳性组、阳性组和强阳性组患者平均生存时间分别为64.9月、56.6月、41.5月和36.4月,组间差别有统计学意义(x2=35.066,P=0.000).结论 Lumican表达水平与大肠癌侵袭能力密切相关,并可作为判断大肠癌患者预后的重要指标之一. 相似文献
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目的检测非编码RNA LUCAT1在大肠癌及癌旁的表达差异,并探讨其与患者临床病理参数和预后的相关性及临床意义。方法采用原位杂交组织化学法检测221对大肠癌病理组织标本和癌旁组织标本中LUCAT1表达水平,两样本秩和检验比较癌与癌旁的LUCAT1表达;采用Pearsonχ^2、非条件Logistics回归、Logrank检验,多因素COX比例风险回归模型以及MDR法分析LUCAT1表达与大肠癌患者临床病理参数及预后的相关性。结果LUCAT1在大肠癌细胞的核和浆均有表达;其在癌和癌旁组织的表达水平分别为141%(90%~210%)和98%(40%~150%),二者比较P<0.05;LUCAT1在癌组织中的表达与年龄(OR=2.288,95%CI:1.294~4.046,P=0.004)、性别(OR=0.540,95%CI:0.308~0.947,P=0.002)、浸润深度(OR=2.249,95%CI:1.394~4.373,P=0.002)、淋巴结转移(OR=2.061,95%CI:1.170~3.631,P=0.012)及Dukes分期(OR=2.089,95%CI:1.148~3.804,P=0.016)存在相关性;对于大肠癌患者,LUCAT1高表达和低表达时总体中位生存时间分别为41个月和111个月,二者比较P<0.001;多因素分析发现,LUCAT1表达为患者预后的独立风险因素(HR=4.502,95%CI:2.865~7.072,P<0.001);降维分析结果显示LUCAT1表达联合8个危险因素结合起来评判预后效果更好,是预测大肠癌预后情况的最佳模型(CV Consistency=10/10,P=0.001)。结论大肠癌中LUCAT1表达水平显著升高,其表达水平与年龄、性别、浸润深度、淋巴结转移及Dukes分期存在相关性,而且LUCAT1高表达使患者的生存时间显著缩短,提示LUCAT1可作为大肠癌发生以及患者术后预后评判的分子标志物。 相似文献
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目的:探讨DCC(deleted in colorectal carcinoma)基因在大肠癌组织中的表达情况及与Bcl-2,Bax蛋白之间的关系。 方法:采用免疫组织化学法结合图像分析技术观察74例大肠癌组织中DCC,Bcl-2,Bax蛋白的表达情况。 结果:大肠癌组织中,DCC蛋白失表达率为 54.1% (40/74),其表达在不同的肿瘤分化程度 (P=0.002)及Dukes分期中有差异 (P=0.042); Bcl-2蛋白表达阳性率为60.8% (45/74),其表达与不同的大肠癌临床Dukes分期 (P=0.032)及是否有淋巴结转移 (P<0.001)中有差异;Bax蛋白表达阳性率为48.6% (36/74),在不同的大肠癌组织学类型、分化程度、Dukes分期及淋巴结是否转移中均无差异 (P>0.05)。大肠癌中DCC蛋白表达与Bcl-2表达水平呈负相关(r=-0.201, P=0.043),与Bax表达水平呈正相关(r=0.296, P=0.005)。 结论:大肠癌中DCC表达缺失频率较高,且可能通过上调Bcl-2蛋白表达和下调Bax蛋白表达阻止细胞凋亡,从而促进大肠癌发生。 相似文献
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为了研究大肠癌表皮生长因子受体(EGFR)和p53蛋白表达与病理特征和预后的关系,应用免疫组化检测EGFR和p53在61例大肠癌中的表达。结果提示:正常大肠粘膜未发现EGFR和p53阳性表达,而两者在大肠癌均有较高表达(77.04%和55.75%)。EGFR表达与大肠癌Dukes分期有关(P<0.05)。p53表达与大肠癌分化程度及Dukes分期有关(P<0.05)。大肠癌生存率随EGFR和p53表达增高而降低,其中两者4年生存率>65%表达组均明显低于<25%组(P<0.05),EGFR-LI和p53-LI与生存期均有明显负相关。结果表明:EGFR和p53表达与大肠癌的进展程度有关,该两项指标对大肠癌临床诊治和预后的评估有重要价值。 相似文献
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目的:探讨S100蛋白在人大肠癌组织中的表达及其临床意义.方法:收集2005年1月~2010年1月间,本院普通外科手术切除的大肠癌组织,且临床资料完整的石蜡标本88例,包括粘液腺癌17例,低分化腺癌15例,中分化腺癌25例,高分化腺癌31例;临床Dukes分期包括Ⅰ期18例,Ⅱ期25例,Ⅲ期25例,Ⅳ期20例;88例患... 相似文献
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目的 探讨UbcH10在肝癌中的临床病理特征及预后意义。方法 采用RT-PCR技术对我院2017年9月~12月收治的30例不同分化程度肝癌患者肿瘤组织中的UbcH10表达进行检测,通过Kaplan-Meier和 Cox回归评估UbcH10表达与患者存活率的相关性。结果 低分化肝癌组织中UbcH10 mRNA表达EI评分为(0.82±0.32)分,高于高分化癌组织的(0.33±0.06)分,差异有统计学意义(P<0.05);不同组织学分化程度和淋巴结转移患者的UbcH10表达比较,差异有统计学意义(P<0.05);高UbcH10表达和低UbcH10表达的肝癌患者的存活时间不同,差异有统计学意义(P<0.05)。结论 UbcH10可能在肿瘤发展中起积极作用,可作为肝癌患者预后不良的独立预测因子。 相似文献
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本研究采用免疫组织化学SABC法对77例大肠癌bcl-2进行了检测。结果表明,在77例大肠癌中,bcl-2阳性67例(87.01%);在作为对照的57例癌周组织中,bcl-2阳性占47例(82.45%);在46例高分化的大肠癌中,比15例低分化腺癌表达要强(P<0.01)。结论:bcl-2在绝大部分大肠癌中都有表达,这表明其参与了大肠癌的凋亡调控,其表达与大肠癌的分化有关。 相似文献
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P16蛋白在乳腺癌中的表达及其与预后的关系 总被引:23,自引:0,他引:23
P16蛋白在乳腺癌中的表达及其与预后的关系郭山春廖松林丁华野吴霞孟振行柳剑英皋岚湘田玉旺一、材料和方法93例乳腺癌标本均为1986~1995年北京军区总医院外科切除标本,常规取材,10%福马林固定,石蜡包埋。按1982年WHO标准进行组织学分型,浸润... 相似文献
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目的 探讨PER2基因在喉癌组织和癌旁非肿瘤组织中的表达水平及其与临床预后之间的相关性。方法 综合利用肿瘤基因组图谱(The Cancer Genome Atlas, TCGA)数据库和基因表达数据库(Gene Expression Omnibus,GEO)中的GSE84957数据集,分析PER2基因在喉癌患者癌组织及癌旁组织中的表达水平,并利用实时荧光定量PCR法在64例喉癌患者组织中验证PER2基因的表达。同时利用COX回归分析探讨PER2基因表达与喉癌患者临床预后和病理特征的相关性,进一步分析PER2基因的蛋白互作网络及功能富集,初步探索其在喉癌发生发展中的作用机制。结果 基于TCGA和GEO数据库分析结果显示PER2基因在喉癌组织中显著低表达(P<0.01),PCR结果证实PER2基因在喉癌组织的表达量显著低于癌旁正常组织(P<0.01)。同时PER2基因高表达与喉癌患者的总生存期和无进展生存时间呈现显著正相关,且与喉癌患者的临床分期、分化程度和淋巴结转移状态等临床病理特征显著相关;蛋白互作及功能富集分析显示PER2基因主要通过与时钟相关基因相互作用参与昼夜节律等生... 相似文献
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目的: 研究原发性肝细胞癌组织中Survivin的表达及其与肝癌细胞的生物学行为及预后的关系。 方法: 应用免疫组织化学染色对83例肝癌及相应癌旁组织中Survivin蛋白的表达情况进行检测,应用半定量RT-PCR技术对11例肝癌及相应癌旁组织中Survivin mRNA的表达情况进行检测,结合临床病理资料分析。 结果: 肝癌及癌旁组织中Survivin蛋白的表达率分别为63.9%(53例)和39.6%(21例)。肝癌组织中,41.5%(22例)表达于肝癌细胞核,45.3%(24例)表达于肝癌细胞浆,13.2%(7例)在胞核、胞浆中均有表达。统计学分析表明,Survivin蛋白阳性反应定位于胞核的病例,其肿瘤的包膜侵犯率和转移率更高 (P<0.05);且术后生存期<2年的肝癌组中的核表达率显著高于术后生存期≥2年者(P<0.01)。RT-PCR结果显示,11例肝癌组织均表达Survivin mRNA,而癌旁组织只有45.5%(5例)表达。 结论: Survivin在肝癌中呈现高表达,其核表达与肝癌的恶性生物学行为及预后密切相关。 相似文献
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AIMS: To investigate the expression of bcl-2 in colorectal carcinoma and to examine its association with mediators of apoptosis (p53 and mdm-2), clinicopathological features and long-term outcome. METHODS AND RESULTS: We determined by immunohistochemistry the expression of bcl-2 in 102 colorectal carcinomas with 10-year follow-up. In 66 of these cases in which we had previously assessed p53 status, no correlation was seen between bcl-2 and p53. The mdm-2 protein was not detected in any of the 66 cases. Cytoplasmic staining of the bcl-2 gene product was seen in the tumour cells of 22 cases (22%). Using a polymerase chain reaction technique we showed that overexpression of bcl-2 was not due to rearrangement of the bcl-2 gene. Expression of bcl-2 protein was related to tumour grade but was unrelated to patient age, sex, tumour site, tumour size or Dukes' stage. There was a trend towards increased survival in those whose tumours expressed bcl-2 protein (P = 0.055). When entered into a multivariate analysis, this survival difference was independent of tumour stage (P = 0.05). CONCLUSIONS: These results suggest that bcl-2 expression in colorectal carcinoma is associated with a better long-term prognosis. 相似文献
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Objective
The aim of this study was to determine the clinicopathological significance and prognostic role of Pin1 expression and subcellular localization in colorectal cancer (CRC).Methods
The Pin1 expression, as well as cytoplasmic and nuclear localization, was investigated using immunohistochemistry in 265 human CRC tissues. The impact of subcellular localization of Pin1 on clinicopathological significance and prognosis in CRC was evaluated.Results
Pin1 was expressed in 164 of 265 CRCs (61.9%). Pin1 expression was not significantly correlated with any clinicopathological parameters. However, Pin1 expression was significantly correlated with worse overall and recurrence-free survivals (P?=? 0.002 and P?=? 0.001, respectively). CRCs with only nuclear Pin1 expression showed no difference in survival compared to CRCs with no Pin1 expression. Over half (51.7%, 137/265) of the CRCs had any cytoplasmic Pin1 expression, and 26.8% (71/265) had both cytoplasmic and nuclear expression. Cytoplasmic Pin1 expression was more frequent than only nuclear or no Pin1 expression in cases with vascular invasion and distant metastasis. Cytoplasmic Pin1 expression was significantly correlated with worse overall and recurrence-free survivals (P?<? 0.001 and P?<? 0.001, respectively).Conclusion
Taken together, our results indicated different prognostic roles of subcellular Pin1expression in CRC. Cytoplasmic expression of Pin1, with or without nuclear expression, is an important factor in predicting aggressive tumor behavior and worse prognosis. 相似文献16.
The heterogeneous nuclear ribonucleoproteins are a group of RNA-binding proteins with a range of key cellular functions, which are dysregulated in tumorigenesis including regulation of translational and RNA processing. The aims of this study were to define the heterogeneous nuclear ribonucleoprotein expression profile in primary and metastatic colorectal cancer and to establish the clinicopathologic significance of this expression. A tissue microarray containing 515 primary colorectal cancers, 224 lymph node metastasis of colorectal cancer, and 50 normal colon samples was immunostained for 6 heterogeneous nuclear ribonucleoproteins. Heterogeneous nuclear ribonucleoprotein I, heterogeneous nuclear ribonucleoprotein K, and heterogeneous nuclear ribonucleoprotein L displayed the most frequent strong immunoreactivity in primary colorectal tumor samples. Heterogeneous nuclear ribonucleoprotein A1 (P < .001) and heterogeneous nuclear ribonucleoprotein U (P = .003) showed significant alterations in nuclear expression in tumors compared with normal colonic epithelium, whereas heterogeneous nuclear ribonucleoprotein A1 (P = .001), heterogeneous nuclear ribonucleoprotein I (P < .001), and heterogeneous nuclear ribonucleoprotein K (P < .001) all showed significant aberrant cytoplasmic immunoreactivity in tumor cells. There were also significant differences in cytoplasmic immunoreactivity between the primary tumor and the corresponding lymph node metastasis for heterogeneous nuclear ribonucleoprotein A1 (P = .001), heterogeneous nuclear ribonucleoprotein I (P < .001), and heterogeneous nuclear ribonucleoprotein K (P = .001). Nuclear heterogeneous nuclear ribonucleoprotein H (χ(2) = 72.1; P < .001), cytoplasmic heterogeneous nuclear ribonucleoprotein I (χ(2) = 28.1; P < .001), and cytoplasmic heterogeneous nuclear ribonucleoprotein K (χ(2) = 13.2; P = .04) all showed significant associations with tumor stage. There was a significant relationship between strong nuclear heterogeneous nuclear ribonucleoprotein H expression and survival (χ(2) = 14.97; P < .001). This study has defined the expression profile of heterogeneous nuclear ribonucleoproteins in colorectal cancer and shown that there are significant alterations in both expression and subcellular localization of individual heterogeneous nuclear ribonucleoproteins in this type of tumor. 相似文献
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The objective of staging is to group malignancies with similar prognosis and therapeutical approach, to be able to compare clinicopathologic data from different institutions, and to perform clinical trials or research studies on a homogeneous population of patients.Accurate pathology staging for prostate cancer is critical to determine treatment of individual patients and it reflects ultimate expected clinical outcome. Radical prostatectomy Gleason score, pathologic T stage, lymph node and surgical margin status are independent predictors of biochemical recurrence-free survival.The TNM staging system is the most widely used system for prostate cancer staging, assessing the extent of primary tumor, the absence or presence of regional lymph node involvement, and the absence or presence of distant metastases. This system is in constant evolution and several modifications have been made over time in an attempt to improve the uniformity of patient evaluation, and to maintain a clinically relevant classification system. 相似文献
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目的:探讨富含AT序列特异性结合蛋白2(special AT-rich sequence-binding protein 2, SATB2)在结直肠癌组织及对应淋巴结转移灶中的表达,并分析其与临床病理特征的关系。方法应用免疫组化EnVision法检测200例结直肠癌原发灶及80例淋巴结转移灶中SATB2蛋白表达。结果结直肠癌原发灶中SATB2高表达率为25.0%(50/200),中等强度表达率为36.0%(72/200),阴性率为39.0%(78/200)。对应淋巴结转移灶中SATB2高表达率为15.0%(12/80),中等强度表达率为28.8%(23/80),阴性率为56.2%(45/80)。 SATB2在结直肠癌原发灶中的表达与肿瘤大小、分化程度,浸润深度、淋巴结转移以及TNM分期显著相关(P<0.05),与患者年龄、性别及远处转移无相关性。 SATB2在结直肠癌淋巴结转移灶中表达显著低于原发灶(P<0.05),其在转移灶中的表达与临床病理因素无明显相关性。结论 SATB2低表达与结直肠癌的发生、发展相关,在肿瘤转移过程中表达明显降低,有望成为新型的结直肠癌分子靶标。 相似文献
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结直肠癌(colorectal cancer,CRC)是世界范围内最常见的癌症之一.近年来,随着人们生活方式及饮食结构的改变,肥胖人群的比例越来越多,大量流行病学研究发现,结肠癌的发生风险跟肥胖密切相关.但是,对于肥胖是否影响CRC的预后,研究结果各不相同.文章就肥胖与CRC患者预后的相关性进行阐述,目前临床上对这一问题存在正反两种观点,多数研究结果显示肥胖在很大程度上影响CRC的预后;对肥胖影响CRC预后的可能作用机制进行分析,包括肥胖的胰岛素抵抗/高胰岛素血症、肥胖引起慢性炎症及脂肪酸合成酶(fatty acid synthase,FASN)表达过度.总之,肥胖作为CRC的主要危险因素及不良预后因素,在一定程度上影响CRC病死及复发. 相似文献