脑胶质瘤中膜联蛋白A2的表达及意义

目的:研究膜联蛋白A2在人脑胶质瘤中的表达及其与病理分级的相关性,探讨其成为胶质瘤诊断标志物的可能性。方法:分别使用RT-PCR和免疫组化法检测胶质瘤和瘤周组织中膜联蛋白A2的mRNA及蛋白表达水平。结果:RT-PCR法显示胶质瘤中膜联蛋白A2mRNA的表达率和表达量远远高于瘤旁脑组织(P0.05),免疫组化的结果也显示胶质瘤中膜联蛋白A2的表达高于瘤旁组织(P0.05)。结论:胶质瘤中膜联蛋白A2表达明显高于瘤周脑组织,且和胶质瘤病理分级呈正相关,可作为胶质瘤诊断辅助指标之一。     

膜联蛋白A7在胃癌组织中的表达和意义

目的 检测膜联蛋白A7（ANXA7）在胃癌组织中的表达改变,探讨胃癌的发生机制。 方法 收集人胃癌组织55例及正常胃组织25例,细胞裂解液裂解组织细胞,蛋白定量试剂盒进行蛋白定量后,Western blotting法和Real-time PCR法分别于蛋白水平和基因转录水平检测ANXA7在胃癌组织和正常胃组织中的表达改变,并用免疫组织化学法对ANXA7在细胞中的定位和表达进行检测。 结果 ANXA7在胃癌中蛋白水平和转录水平的表达均显著增高,与正常组相比差异有显著性（P<0.05）; ANXA7在胃癌细胞中定位于细胞质。 结论 膜联蛋白A7在胃癌中的表达增高有可能是胃癌发生的机制之一。     

间皮素(mesothelin)在乳腺浸润性导管癌中的表达及临床意义

目的:研究间皮素(mesothelin)的表达与乳腺浸润性导管癌的关系.方法:采用免疫组化测定46例乳腺浸润性导管癌组织中mesothelin的表达情况.结果:mesothelin在乳腺浸润性导管癌组织中的阳性表达率为19.6% (9/46).在手术病理分期Ⅰ期、Ⅱ期和Ⅲ期中阳性率分别为5.56%、12.5%和50%....     

ALDH1A1在乳腺浸润性导管癌中的表达及临床意义

目的探讨ALDH1A1在乳腺浸润性导管癌中的表达及临床意义。方法收集2004年至2008年在中国医科大学附属第一医院乳腺外科病房行根治性手术的158例有完整随访资料的乳腺浸润性导管癌组织石蜡标本,采用免疫组化SP法检测ALDH1A1蛋白在乳腺癌组织中的表达,分析其与临床病理因素及预后的关系。结果 ALDH1A1主要表达于细胞浆。乳腺癌浸润性导管癌组织中ALDH1A1表达阳性率为56.3%。乳腺癌浸润性导管癌组织中ALDH1A1的表达与年龄、绝经状态、肿瘤大小、临床分期、临床分级无关(P0.05),而与淋巴结转移相关(P=0.009)。ALDH1A1阳性表达患者无病生存时间(DFS)和总生存时间(OS)均短于ALDH1A1阳性表达患者,差异具有有统计学意义(P=0.022和P=0.011)。Cox比例风险回归分析显示ALDH1A1是影响乳腺浸润性导管癌患者预后的危险因素(P=0.025和P=0.014),但不是独立危险因素(P=0.892和P=0.489)。结论 ALDH1A1蛋白在乳腺浸润性导管癌的发生、发展中起一定作用,与淋巴结转移密切相关,可能是影响乳腺浸润性导管癌预后的重要指标。     

上皮钙依赖粘附素相关分子在乳腺浸润性小叶癌和导管癌中的表达及意义

目的 探讨上皮钙依赖粘附素相关分子α-、β-、γ-catenin在乳腺浸润性小叶癌（ILC）和浸润性导管癌（IDC）中的表达及其意义。方法 采用免疫组织化学LSAB法检测了19例ILC和32例IDC组织中α-、β-、γ-catenin的表达,并根据阳性癌细胞占肿瘤细胞的比例进行半定量化分析和统计学x^2检验。结果 α-、β-、γ-catenin在19例ILC中表达缺失和明显减少的分别为15例（78.9%),10例（52.6%)和16例（84.2%),而在32例IDC癌组织中的表达缺失和明显减少为24例（75.0%),14例（43.8%)和26例(81.3%)例。另外,这3种蛋白在浸润性癌组织中表达强度弱于原位癌灶的表达强度。α-catenin和β-catenin在乳腺浸润性癌中的表达具有明显的正相关性,未发现α-、β-、γ-catenin在乳腺浸润性癌中的表达与有无伴有淋巴结转移病例之间的关系有统计学意义。结论 α-、β-、γ-catenin在乳腺ILC和IDC中表达均为明显缺失和减少,说明这些粘附分子在乳腺浸润性癌发生中确实丧失了其正常的细胞粘附功能。     

HER-2、p16、p53蛋白在乳腺浸润性导管癌中的表达及意义

目的探讨HER-2、p16、p53蛋白在乳腺浸润性导管癌中的表达情况及其临床意义。方法收集2008年7月～2010年12月商丘市中心医院行手术治疗,术后证实为乳腺浸润性导管癌患者149例,检测HER-2、p16、p53蛋白在乳腺浸润性导管癌中以及正常组织中的表达情况。结果乳腺浸润性导管癌HER-2过表达,阳性率为23.5%;p16、p53阳性率分别为31.5%和51.0%;HER-2过表达与腋窝淋巴结转移、组织学分级存在明显相关性(χ2=5.687、5.924,P均<0.05);p16阳性表达在不同年龄之间存在统计学差异(χ2=4.213,P<0.05),p53阳性表达在不同组织学分级之间存在统计学差异(χ2=6.378,P<0.05);HER-2、p16表达与术后无瘤生存存在明显的相关性;p16与p53存在明显相关性(r=0.282,P<0.05)。结论 HER-2、p16、p53与乳腺浸润性导管癌的发生、发展密切相关,可作为临床指导治疗和评价患者预后的重要指标。     

SSTR2与Her-2在乳腺癌组织中的表达及其临床意义

目的：探讨SSTR2与Her-2在原发性乳腺浸润性导管癌组织中的表达,及其与临床病理因素的关系。方法：应用免疫组织化学法（IHC）检测80例原发性乳腺浸润性导管癌组织中SSTR2与Her-2的表达情况,并分析其与临床病理因素的关系。结果：原发性乳腺浸润性导管癌组织中SSTR2阳性表达率为77.5%（62/80）,Her-2阳性表达率为46.3%（37/80）,Her-2与SSTR2同时表达阳性率为31.3%（25/80）。SSTR2与Her-2两者表达有相关性（P〈0.05）。SSTR2的表达与年龄（P〉0.05）,月经状态（P〉0.05）,肿瘤大小（P〉0.05）无关,与不同肿瘤临床TNM分期,淋巴结转移状态密切相关（P均〈0.05）。Her-2的表达与年龄（P〉0.05）,月经状态（p〉0.05）无关;与肿瘤大小,不同肿瘤临床TNM分期,淋巴结转移状态密切相关（P〈0.05）。结论：原发性乳腺浸润性导管癌组织中SSTR2阳性表达率为77.5%,因此对大多数疑为乳腺癌的患者可应用生长抑素受体显像技术（SRS）进行筛选。SSTR2与Her-2两者表达有相关性,因此生长抑素显像技术有助于提示乳腺癌患者Her-2基因表达情况,联合检测Her-2与SSTR2对乳腺癌临床诊断、分期和预后具有指导意义。     

乳腺癌中线粒体DNA拷贝量变化的意义

目的 通过分析mtDNA拷贝量在乳腺癌组织和癌旁正常组织中的变化,探讨其在乳腺癌发生和发展中的作用. 方法 采用PCR反应分别扩增20例乳腺浸润性导管癌组织和相对应的20例癌旁正常组织的mtDNAD-loop两个高突变区HV1和HV2,并以核基因组β-actin作为定量标准物,经过聚丙烯酰胺凝胶电泳法(PAGE)并利用Gel-Pro Express图像分析系统进行核酸定量分析,比较mtDNA拷贝量在癌组织和癌旁组织间的差异. 结果 在乳腺癌组织中HV1和HV2的条带的吸光度均较癌旁正常组织弱,其中HV1在两者比较中有统计学差异(P<0.05);HV2在两者比较中有明显统计学差异(P<0.01);统计学分析发现,HV1和HV2呈明显正相关(P<0.01),且mtDNA的拷贝量与年龄、肿瘤大小均无统计学意义,而与淋巴结转移和肿瘤分期有统计学意义(均为P<0.05).结论乳腺浸润性导管癌组织mtDNA拷贝量减少,与乳腺癌的发生和发展有密切关系,并可能成为一种新的乳腺癌标志物.     

乳腺癌中RRIG1 mRNA的表达及意义

目的探讨维甲酸受体诱导基因1(retinoic receptor-induced gene 1,RRIG1)在人乳腺癌组织中的表达及其与患者临床病理参数的关系。方法以GAPDH为内对照采用实时荧光定量逆转录聚合酶链反应法(real time quantitative reverse transcrip-tion polymerase chain reaction,RQ RT-PCR)检测76例新鲜乳腺浸润性导管癌组织5、例导管原位癌组织和20例乳腺良性增生组织中RRIG1 mRNA的表达水平,并分析其与患者临床病理参数的关系。结果乳腺导管原位癌、浸润性导管癌组织中RRIG1 mRNA相对表达水平(3.5±2.1、6.7±4.1)明显低于良性增生组织(10.2±6.5),差异具有统计学意义(P=0.004,P=0.036);乳腺浸润性导管癌中淋巴结转移组RRIG1 mRNA相对表达水平(5.2±3.1)明显低于无淋巴结转移组(7.48±4.5),两组之间差异具有统计学意义(P=0.023)。结论 RRIG1可能作为一种新的抑癌基因参与乳腺癌的发生、浸润和转移,对乳腺癌早期诊断和预后评估具有重要的参考价值。     

锰超氧化物歧化酶在乳腺浸润性导管癌中的表达及临床意义

目的检测锰超氧化物歧化酶(manganese superoxide dismutase,MnSOD)在乳腺浸润性导管癌组织及癌旁正常组织中的表达,探讨MnSOD在肿瘤的发生及肿瘤侵袭过程中的作用。方法采用RT-PCR和Western blot法分别对20例乳腺浸润性导管癌组织样本和20例癌旁正常组织样本的MnSOD mRNA及蛋白表达进行检测,以β-actin作为定量参考物,比较其在乳腺癌组织和癌旁正常组织中的表达差异,并结合临床特征淋巴结转移和TNM分期,分析MnSOD在肿瘤不同阶段表达的差异。结果乳腺浸润性导管癌组织MnSOD mRNA的表达值为0.61±0.15,癌旁组织为1.24±0.14,两者比较差异具有统计学意义(P<0.01);MnSOD蛋白在癌组织中表达值为0.40±0.04,癌旁组织为0.75±0.06,两者比较差异具有统计学意义(P<0.01)。乳腺浸润性导管癌中淋巴结转移与非淋巴结转移MnSOD mRNA及蛋白表达无统计学意义(P>0.05)。TNM分期:Ⅰ期4例MnSOD mRNA表达值为0.45±0.15,Ⅱ期9例MnSOD mRNA表达值为0.44±0.15,Ⅲ期7例MnSOD mRNA表达值为0.36±0.07,Ⅱ期与Ⅲ期及Ⅰ期与Ⅲ期的比较差异均有统计学意义(P<0.05);Ⅰ期与Ⅱ期比较差异无统计学意义(P>0.05);Ⅰ～Ⅲ期MnSOD蛋白表达三者相互间比较差异均无统计学意义(P>0.05)。结论乳腺浸润性导管癌组织中Mn-SOD mRNA和蛋白表达明显下降,检测MnSOD的表达可作为临床诊治及判定乳腺浸润性导管癌预后的指标。     

Fibroadenoma of the Female Breast: A Critical Clinical Assessment

In a study of 70 patients with 75 histologically proven fibroadenomas of the breast, a biphasic peak incidence was recorded, initially in their late 20s to early 30s with a second unexpected peak in their late 40s to early 50s. These lesions averaged 2.8 cm in diameter, two thirds were located in the lateral quadrants of the breast, and 10 percent were multiple. There was a significantly higher incidence among nonwhite than white women when compared to census figures and hospital admission data. The corrected recurrence rate was 17 percent. An inordinately high number of patients under 40 years of age in this series were nonwhite. Family history demonstrates a significantly high incidence of breast disease of all types in first-degree relatives.     

Self-Blame and Distress Among Women with Newly Diagnosed Breast Cancer

This study examined relations between behavioral and characterological self-blame attributions for breast cancer and psychological distress in the year following a diagnosis. One hundred fifteen women with newly diagnosed breast cancer participated. First, we predicted that both forms of self-blame would be associated with distress shortly after diagnosis (i.e., at 4 months). Second, we predicted that only characterological self-blame would be related to distress at 7 and 12 months post-diagnosis because behavioral self-blame would enhance perceptions of control, thereby protecting against distress. Results supported the first hypothesis; both forms of self-blame were related to symptoms of anxiety and depression at 4 months post-diagnosis. Findings did not support the second hypothesis because both forms of self-blame continued to be related to distress at 7 and 12 months post-diagnosis. Furthermore, perceptions of control did not mediate the self-blame/distress relation. Implications for social cognitive processes in adaptation to breast cancer are discussed.     

Comparative Analysis of the Work of Morphofunctional Zones in Normal Epithelium,Fibroadenoma, and Cancer of the Breast

Twenty-four rosettes (proliferative epidermal units) in epithelial tissue are united into morphofunctional zones, where cambial cells proliferate with the formation of maternal and daughter cells and these latter ones differentiate under the influence of electrical field generated by 12 maternal cells. The number of cambial cells in morphofunctional zone of a malignant tumor is reduced at least 2-fold. Hence, the number of maternal cells is reduced to 6, which is insufficient for electric field generation and stimulation of daughter cells differentiation. The percentage of cambial cells in a benign tumor decreases 1.5 times. Daughter cells are differentiated in an electric field whose strength is below optimal, but above the threshold value at which cells do not differentiate; hence, differentiation is incomplete. __________ Translated from Byulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 140, No. 8, pp. 201–205, August, 2005     

Expression of Phosphofructokinase-1 and Glycolytic Level in Human Breast Cancer and Paracancer Tissues

目的:比较人乳腺癌及癌旁组织中糖酵解的水平差异,并探讨磷酸果糖激酶1的表达对糖酵解水平的影响.方法:采集3种不同临床分期共33对人乳腺癌及癌旁组织.酶法分析组织中乳酸含量、乳酸脱氢酶活力、己糖激酶活力、磷酸果糖激酶-1活力和丙酮酸激酶活力,用来反映糖酵解的水平;采用Westernblot技术检测组织中磷酸果糖激酶-1的表达.结果:癌组织的糖酵解水平和磷酸果糖激酶1表达量均高于癌旁组织,而且,晚期癌组织的糖酵解和磷酸果糖激酶1表达量水平高于早期乳腺癌组织.结论:在人乳腺癌的发生发展过程中,糖酵解水平的增加可能与磷酸果糖激酶1的表达量增加有关.     

hsa-miR-1973 MicroRNA is Significantly and Differentially Expressed in MDA-MB-231 Cells of Breast Adenocarcinoma and Xenografts Derived from the Tumor

Bulletin of Experimental Biology and Medicine - The gene expression profiles of MDA-MB-231 cell line of breast cancer and xenografts derived from this tumor in murine model were analyzed using...     

Mood States Associated with Transitory Physical Symptoms Among Breast and Ovarian Cancer Survivors

This study used electronic diaries to examine patterns of mood and physical symptoms within and across days in two independent samples of cancer patients. Twenty-three breast cancer survivors (post-treatment) and 33 ovarian cancer survivors (on chemotherapy) recorded mood and physical symptoms 4 times daily for 7 consecutive days. A series of repeated-measures multilevel models using SAS Proc Mixed were calculated to estimate the degree to which physical symptoms (e.g., pain, fatigue, and nausea) were associated with participants’ moods. Across days, mood vectors with a pleasantness component (i.e., happy-sad and calm-anxious) and mood vectors with an arousal component (i.e., active-passive and peppy-tired) were significantly associated with physical symptom severity. Specifically, breast cancer survivors with greater fatigue and pain reported more negative moods (η ²≤0.33). Ovarian cancer survivors with greater fatigue (η ²≤0.35), pain (η ²≤0.04), and nausea (η ²≤0.04) also reported more negative moods. Diurnal analyses showed that happy-sad (η ²≤0.16), active-passive (η ²≤0.27), and peppy-tired moods (η ²≤0.33) were significantly negatively associated with fatigue at each of the four daily assessment times in both samples. Although correlational, our findings are consistent with previous studies suggesting that variations in both pleasant and aroused mood covary with changes in real-time physical symptom reports.     

Emotional Coping Differences Among Breast Cancer Patients From an Online Support Group: A Cross-Sectional Study

Background

Due to mixed findings in research on the effect of online peer-to-peer support on psychological well-being, there is a need for studies explaining why and when online support communities are beneficial for cancer patients.

Objective

Previous studies have typically not taken into account individual coping differences, despite the fact that patients have different strategies to cope with cancer-related emotions. In the current study, it was predicted that the effects of online support group participation would partly depend on patients’ ability to cope with thoughts and emotions regarding the illness.

Methods

For this study, 184 Dutch breast cancer patients filled out a questionnaire assessing activity within a peer-led online support community, coping with emotions and thoughts regarding the illness (cognitive avoidance, emotional processing, and expression) and psychological well-being (depression, breast cancer-related concerns, and emotional well-being). Of these, 163 patients were visiting an online peer-led support community.

Results

Results showed interactions of the intensity of support group participation and coping style on psychological well-being. Specifically, we found an interaction of online activity and emotional expression on depression (beta=–.17, P=.030), a marginally significant interaction of online activity and emotional expression on emotional well-being (beta=.14, P=.089), and an interaction of online activity and cognitive avoidance on breast cancer–related concerns (beta=.15, P=.027). For patients who actively dealt with their emotions and thoughts, active online support group participation was positively related to psychological well-being. For patients high on avoidance of illness-related thoughts or low on emotional expression, active participation was negatively related to measures of well-being.

Conclusions

The current study revealed the role of individual differences in coping in online support group participation. Results suggest that breast cancer patients’ ability to cope with emotions and thoughts regarding the illness influence the relationship between online support group participation and psychological well-being.     

Matrix Metalloproteinases 2 and 9 Are Differentially Expressed in Patients with Indeterminate and Cardiac Clinical Forms of Chagas Disease

Dilated chronic cardiomyopathy (DCC) from Chagas disease is associated with myocardial remodeling and interstitial fibrosis, resulting in extracellular matrix (ECM) changes. In this study, we characterized for the first time the serum matrix metalloproteinase 2 (MMP-2) and MMP-9 levels, as well as their main cell sources in peripheral blood mononuclear cells from patients presenting with the indeterminate (IND) or cardiac (CARD) clinical form of Chagas disease. Our results showed that serum levels of MMP-9 are associated with the severity of Chagas disease. The analysis of MMP production by T lymphocytes showed that CD8⁺ T cells are the main mononuclear leukocyte source of both MMP-2 and MMP-9 molecules. Using a new 3-dimensional model of fibrosis, we observed that sera from patients with Chagas disease induced an increase in the extracellular matrix components in cardiac spheroids. Furthermore, MMP-2 and MMP-9 showed different correlations with matrix proteins and inflammatory cytokines in patients with Chagas disease. Our results suggest that MMP-2 and MMP-9 show distinct activities in Chagas disease pathogenesis. While MMP-9 seems to be involved in the inflammation and cardiac remodeling of Chagas disease, MMP-2 does not correlate with inflammatory molecules.