胃癌中KAI1蛋白表达与临床病理特征的相关性

目的:探讨KAI1蛋白在胃癌中的表达及其与临床病理特征的相关性。方法:应用S-P免疫组化法检测50例胃癌及13例胃良性病变和7例正常胃黏膜组织中KAI1蛋白的表达情况。结果:胃癌组织中KAI1蛋白的表达率为22%,显著低于胃良性病变(84.6%)(P<0.05)及正常胃黏膜组织(100%)(P<0.05)。低、未分化癌的阳性率(12.1%)低于高、中分化癌(41.2%)(P<0.05);随着癌组织浸润程度的进展,KAI1蛋白的阳性率呈降低趋势(T1为66.7%,T2为23.5%,T3为15.0%,T4为0);有淋巴结转移的胃癌组织中KAI1蛋白阳性率(13.2%)低于无淋巴结转移的胃癌组织(50.0%);KAI1蛋白的表达与肿瘤的大小、部位及患者的年龄、性别无关。结论:在胃癌的进展过程中KAI1蛋白表达逐渐降低。KAI1蛋白表达降低在胃癌的浸润、转移过程中起着重要的作用。检测KAI1蛋白可能成为监测胃癌进展及临床上判断其预后的重要参考指标。     

KAI1基因在非小细胞肺癌中的表达及意义

 目的 探讨肿瘤转移抑制基因KAI1基因在非小细胞肺癌组织中的表达及其与患者临床病理指标的关系。 方法 采用RT-PCR和Western blot法,检测48例肺癌患者手术切除的新鲜肺癌组织标本和20例同期手术切除的肺部良性病变周围正常组织中KAI1 mRNA、KAI1/CD82,并结合患者的临床病理资料对其结果进行统计分析。 结果 肺癌组织和肺部良性病变组织中KAI1 mRNA的阳性率分别为52%和90%,KAI1/CD82蛋白的阳性率分别为48%和85%,肺癌组KAI1mRNA及KAI1/CD82蛋白表达均低于肺部良性病变组（P<0.01）;KAI1mRNA、KAI1/CD82表达水平与肺癌患者的临床分期、组织分化程度、淋巴结转移有关（P<0.05）,其中KAI1/CD82表达与淋巴结转移状况密切相关(P<0.01),肺癌组织中KAI1 mRNA与KAI1/CD82表达有相关性（P<0.01）。 结论 KAI1基因的低表达可能与非小细胞肺癌的发生、发展和转移有关;其下调的机制可能主要发生在转录水平;KAI1基因的表达可作为一项评估肺癌患者转移潜能的指标。     

非小细胞肺癌中KAI1基因表达及其与P53的相关性研究

背景与目的近年研究表明,KAI1表达下调与多种肿瘤的转移有关,但其与非小细胞肺癌的关系研究较少,且导致其下调的机制尚未明确。本研究从mRNA和蛋白水平探讨KAI1基因在非小细胞肺癌组织中的表达与患者临床病理特征的关系及其与突变型P53蛋白表达的关系。方法采用RTPCR和Westernblot法,检测48例肺癌患者手术切除的新鲜癌组织标本中KAI1mRNA、KAI1/CD82及突变型P53蛋白的表达,20例肺部良性疾病组织和正常肺组织作为对照。结果肺癌组和对照组中KAI1mRNA的阳性率分别为52%和90%(P<0.01),KAI1/CD82蛋白的阳性率分别为48%和85%(P<0.01),突变型P53蛋白阳性率分别为65%和5%(P<0.01)。KAI1mRNA、KAI1/CD82和突变型P53蛋白阳性率与肺癌患者临床分期、细胞分化程度和淋巴结转移有密切关系(P<0.05或P<0.01)。肺癌组织中KAI1mRNA与KAI1/CD82表达呈密切相关性(P<0.01),KAI1/CD82与突变型P53蛋白的表达亦呈显著相关性(P<0.05),KAI1mRNA与突变型P53表达无明显相关性(P>0.05)。结论KAI1基因的低表达可能与非小细胞肺癌的发生、发展和转移有关;其下调的机制可能主要发生在转录水平并与p53基因有关,二者可能作为评估肺癌患者转移潜能的指标。     

应用组织芯片技术检测KAI1、MRP-1、FAK蛋白在肺癌组织中的表达

背景与目的:肿瘤的发生发展、浸润转移与多基因改变密切相关。目前Kang-ai-1(KAI1)、移动相关蛋白(motility-relatedprotein-1,MRP-1)和局部粘着斑激酶(focaladhesionkinase,FAK)3种基因在肺癌中的共同作用研究较少。本研究旨在探讨这3种基因的蛋白产物在肺癌发生发展中的作用及其在肿瘤诊断和预后判断中的价值。方法:应用免疫组化SP方法检测包含240个点的肺癌组织芯片中KAI1、MRP-1和FAK蛋白的表达。结果:KAI1在肺癌原发灶中阳性率为25.9%,MRP-1为42.6%,与正常肺组织(100%)相比均显著下调;FAK蛋白在肺癌组织中阳性率为44.4%,与正常肺组织相比显著增高;KAI1、FAK两种蛋白在肺癌组织中的表达与患者的年龄、性别、肿瘤的大体类型及组织类型无关,而与肿瘤的分化程度、临床分期及是否伴有淋巴结转移密切相关,两种蛋白的表达呈显著负相关。MRP-1蛋白在肺癌组织中的表达与组织类型有关,小细胞肺癌与非小细胞肺癌相比差异显著,MRP-1与KAI1呈显著正相关,与FAK呈显著负相关。结论:KAI1、MRP-1和FAK的异常表达与肺癌的浸润转移有关,联合检测这3项指标对肺癌的发生发展有重要的预测作用。     

Hugl-1在非小细胞肺癌中的表达及临床意义

目的:研究人源幼虫巨大致死性基因Hugl-1基因表达与人非小细胞肺癌(NSCLC)临床病理生理特征的关系,探讨Hugl-1基因表达与肺癌肿瘤细胞发生、侵袭的相关性。方法:对50例NSCLC标本(含癌旁组织)和10例肺良性病变组织应用单克隆抗体、免疫组化SP法检测Hugl-1基因的蛋白表达情况。应用RT-PCR方法检测NSCLC中Hugl-1的mRNA表达水平。结果:肺癌肿瘤组织中Hugl-1基因表达水平显著低于癌旁组织和肺良性病变组织(P<0.05)。肺癌组织中Hugl-1基因表达水平降低与肿瘤分期、淋巴结转移程度存在相关性(P<0.05),与肺癌组织学类型、细胞分化程度以及患者的性别、年龄无关。结论:Hugl-1基因表达下降与肺癌的发生、发展过程有关。     

KAI1基因表达与大肠癌发生、发展的关系

 目的 探讨KAI1基因的表达与大肠癌(CRC)发生、发展的关系. 方法 采用RT-PCR法及免疫组织化学(EnvisionTM法)检测40例大肠癌组织、8例癌旁黏膜和8例正常黏膜的KAI1 mRNA和蛋白表达. 结果 正常黏膜KAI1 mRNA水平显著低于癌组织(P<0.05),癌旁黏膜略高于正常黏膜,但无显著差异;在大肠癌原发灶中,KAI1蛋白表达阳性25例(62.5%),弱阳性9例(22.5%),阴性6例(15%).KAI1 mRNA及蛋白水平在低分化、伴淋巴结转移肿瘤中表达显著降低(P<0.01,P<0.01;P<0.05,P<0.05). 结论 KAI1的异常表达可能参与了大肠癌的发生、发展,并对肿瘤的分化、淋巴结转移的判断有一定指导意义。     

KAI1和FAK蛋白在肺癌组织中的表达及其相关性研究

目的通过检测肺癌及正常肺组织中KAI1、FAK蛋白的表达及其与临床病理学参数之间的关系,探讨其在肺癌发生发展中的意义.方法应用免疫组化S-P方法检测54例肺癌组织及10例正常肺组织中KAI1和FAK蛋白的表达情况.结果 KAI1蛋白在肺癌组织中表达下调,FAK蛋白在肺癌组织中表达增高,二者与正常肺组织相比差异均有显著性.两种蛋白的表达均与患者的年龄、性别、肿瘤的大体类型及组织类型无关,而与肿瘤的分化程度、临床分期及是否伴有淋巴结转移密切相关;在肺癌组织中两种蛋白的表达呈显著负相关.结论 KAI1和FAK与肺癌的浸润转移有关,联合检测这两项指标对肺癌的发生发展有重要的预测作用.     

肺癌组织中KAI 1/CD82和整合素α5的表达及意义

目的:研究KAI 1/CD82和整合素α5在肺癌组织中的表达及其与临床病理特征的关系.方法:应用免疫组织化学方法检测110例肺癌组织中KAI 1/CD82及整合素α5的表达情况.结果:KAI 1/CD82在肺癌中的表达阳性率为37.3%,α5的表达阳性率为44.5%.二者的表达水平在淋巴结转移方面差异有显著性意义(r＞0,P＜0.05).KAI 1/CD82的表达在TNM分期方面差异亦呈显著性意义(r＞0,P＜0.05).二者的表达水平与年龄、性别、病变部位、肿瘤大小、分化程度及病理类型无关(P＞0.05).结论:KAI 1/CD82和整合素α5与淋巴结转移相关,二者可作为判定肺癌浸润和转移的指标.     

肺癌组织中MRP-1和FAK蛋白的表达及其临床意义的探讨

背景与目的肿瘤细胞发生浸润转移的首要基础是细胞移动性增强,此过程受到极其复杂的多基因调控,移动相关蛋白-1(Motility-related-protein-1,MRP-1)是一种能抑制细胞移动能力的蛋白,它表达的下调可能是肿瘤细胞获得浸润转移恶性表型的关键,但其调控机制仍不清楚。局部粘着斑激酶(Focal adhesion kinase,FAK)是整合素介导的信号转导过程中的中心分子,它与细胞癌变、分化、浸润相关。但二者在肺癌中的表达情况,与临床病理学参数之间的关系及二者之间的相关性如何国内外报道尚不一致。本文拟通过分析MRP-1和FAK两种蛋白在肺癌组织中的表达及其与临床病理学参数之间的关系,探讨二者在肺癌发生发展、浸润转移中的作用。材料与方法采用免疫组化链霉亲和素过氧化物酶法(Streptavidin peroxidase,SP)检测10例正常肺组织、89例肺癌组织和12例淋巴结转移肺癌组织中MRP-1和FAK蛋白的表达。结果MRP-1在正常肺组织中阳性表达率为100.0%,在肺癌组织中为41.6%,而在转移癌组织中仅为8.3%,显著下调;FAK蛋白在正常肺组织中仅微弱表达,阳性率为10.0%,在肺癌组织中阳性表达率为48.3%,而在转移癌组织中为83.3%,过度表达,3组之间差异有统计学意义。MRP-1和FAK蛋白呈显著负相关。在肺原发癌组织中MRP-1的表达与患者年龄、性别、肿瘤大体类型均无关,而与肿瘤的组织类型、分化程度、临床分期、以及是否伴有淋巴结转移密切相关;FAK的表达与患者年龄、性别、肿瘤大体类型及组织学类型均无关,而与肿瘤的分化程度、临床分期、以及是否伴有淋巴结转移密切相关。结论MRP-1、FAK的异常表达可能参与了肺癌的浸润转移,检测这两项指标对预测肺癌的进展有一定的参考价值。     

TSLP在肺癌组织中的表达及其与调节性T 细胞的相关性*

目的:探讨胸腺基质淋巴生成素（thymic stromal lymphopoietin ,TSLP）在肺癌组织中的表达及其与临床指标以及局部调节性T 细胞（Regulatory T cells,Tregs）数量的相关性。方法:分别采用Q-RT-PCR 和免疫组织化学染色方法检测TSLP在不同病变类型的肺组织中的表达,分析TSLP在不同病变肺组织中的表达差异;并运用免疫组化方法检测TSLP蛋白在不同病理类型的肺癌组织中的表达,分析TSLP表达与临床病理特征之间的相关性;采用免疫组化法检测肺癌组织中的Tregs细胞,分析TSLP表达与肿瘤局部Tregs细胞数量之间的关系。结果:TSLP基因在肺癌组织、癌旁组织、非肿瘤肺上皮均表达阳性,且表达差异无统计学意义;TSLP蛋白表达于胞浆中,其在肺癌组织中的阳性表达率（69.57%）显著高于肺的良性病变（13.33%）和非肿瘤肺上皮（30.00%）,且TSLP表达与肿瘤大小和淋巴结转移有关;TSLP表达阳性的患者其肿瘤局部浸润的调节性T 细胞数量明显高于TSLP阴性组（P<0.05）。 结论:TSLP蛋白在肺癌组织中表达增加,且与肿瘤局部调节性T 细胞数量增多有关,这提示TSLP可能是通过诱导Tregs增加在肺癌免疫耐受中发挥作用。      

Ringworm in animals in a farm in Assiut

Bericht über das Auftreten von Hautmykosen bei Tieren auf der Farm der Landwirtschaftlichen Fakultät der Universität Assiut. Von 70 Kälbern waren 42 pilzkrank, davon 22 durch T. mentagrophytes, 20 durch T. verrucosum. Von 180 Kühen waren 8 pilzbefalien, sämtlich durch T. mentagrophytes. Von 2 kranken Bullen wurde T. verrucosum isoliert. Auch die 3 Pferde und 2 Maultiere der Farm waren pilzinfiziert; Erreger war in diesen Fällen T. equinum. Auch ein Kalb war von T. equinum befallen. Die gleiche Pilzart wurde ferner von 3 Tierpflegern isoliert, die Pilzherde am Hals und an den Armen aufwiesen.     

Statistical challenges in preprocessing in microarray experiments in cancer

Many clinical studies incorporate genomic experiments to investigate the potential associations between high-dimensional molecular data and clinical outcome. A critical first step in the statistical analyses of these experiments is that the molecular data are preprocessed. This article provides an overview of preprocessing methods, including summary algorithms and quality control metrics for microarrays. Some of the ramifications and effects that preprocessing methods have on the statistical results are illustrated. The discussions are centered around a microarray experiment based on lung cancer tumor samples with survival as the clinical outcome of interest. The procedures that are presented focus on the array platform used in this study. However, many of these issues are more general and are applicable to other instruments for genome-wide investigation. The discussions here will provide insight into the statistical challenges in preprocessing microarrays used in clinical studies of cancer. These challenges should not be viewed as inconsequential nuisances but rather as important issues that need to be addressed so that informed conclusions can be drawn.     

Hemoglobin in lymphogranulomatosis in children

The peculiarities of hemoglobin content and properties in lymphogranulomatosis were studied in children by different methods. In most patients the content of fetal hemoglobin and methhemoglobin was found to increase and the rate of ferricyanide oxidation of hemoglobin also increases. Simultaneously, the rate of non-homogenicity of basic hemoglobin fractions was observed to increase on account of immunologically different components.     

Trends in zygomycosis in children

Zygomycosis, or mucormycosis, is associated with significant morbidity and mortality in both children and adults. Studies in adults have shown an increase in the incidence of zygomycosis, particularly among haemtopoietic stem cell transplant (HSCT) recipients and patients with haematologic malignancies. There is a paucity of data on the epidemiology of zygomycosis in children. We performed a retrospective analysis to describe trends in zygomycosis between 1 January 2003 and 31 December 2010. We used the Pediatric Health Information System (PHIS) database to identify paediatric patients who were diagnosed with zygomycosis during the study period. Administrative data on diagnoses, demographics, underlying conditions and clinical experiences were collected. Summary statistics were calculated and tests for trend were conducted. We identified 156 unique patients with zygomycosis. The prevalence of zygomycosis did not significantly increase over time (P=0.284). The most common underlying condition was malignancy (58%) and over half received intensive care. Voriconazole utilisation among all hospitalised children significantly increased during the period (P=0.010). Our study demonstrates that the incidence of zygomycosis is not significantly increasing. During the time period there was a significant increase in the use of voriconazole among children.     

Dermatomycosis in Goats in India

Summary: In an extensive survey involving 2176 goats 1.56% of goats manifested clinical lesions of ringworm infection. Animals below the age of 6 months were affected most (4.20%). The incidence of infection was higher during the winter months. T. verrucosum, T. mentagrophytes and M. gypseum were isolated from the skin scrapings of 12, 4, and 2 goats respectively. It is suggested that the infected animals could be a source of disease to human population in which the zoophilic dermatophyte invasion is characterized by severe inflammatory lesions of the skin. The zoonotic importance of different dermatophytes is stressed.
Zusammenfassung: In einer ausgedehnten Untersuchung an 2176 Ziegen wurden bei 1,56% klinische Zeichen einer Hautmykose festgestellt. Tiere, die jühger als 6 Monate alt waren, zeigten mit 4,20% am häfigsten Krankheitssymptome. In den Wintermonaten war die Erkrankungshäufigkeit am gröBten. T. vermcosum, T. mentagrophytes and M. gypseum wurden jeweils von 12,4 bzw. 2 Ziegen isoliert. Die inflzierten Tiere köinnen eine Infektionsquelle für die menschliche Bevölkerung darstellen und dort Mykosen mit stark entzündlichen Veränderungen auslösen. Die Bedeutung verschiedener Dermatophyten als Erreger von Zoonosen wird hervorgehoben.     

Temozolomide treatment in glioma--experiences in two university hospitals in Finland

Thirty-two patients with relapsing glioma were treated with temozolomide in two university hospitals in Finland. One patient (3%) had complete response and 9 (28%) partial response, with 8 patients (25%) showing stable disease. Median progression-free survival for these 18 patients (56%) was 7 months (range 2-11+). The remaining either had progressive disease (25%) or only clinical evaluation (19%). Karnofsky score improved in 34% of patients and decreased in 3%. Symptoms were alleviated in 44% and deteriorated in 9%. Grade 3-4 toxicity was detected in 9% of the patients. Only 4% of the days in treatment were spent in hospital. An average 1.8 neuroradiological investigations, 6.9 laboratory visits, and 5.3 visits to the oncologist were made. This study confirms that temozolomide has positive effects on the outcome of often heavily pretreated glioma patients. High drug costs are compensated by prolonged home care and even the possibility to maintain working capacity.     

Sex hormones in women in rural China and in Britain

Plasma concentrations of certain hormones linked to breast cancer risk were measured in age-pooled samples from 3,250 rural Chinese women in 65 counties, and 300 British women, all aged 35-64. In age-groups 35-44, 45-54 and 55-64 respectively, mean oestradiol concentrations were 36% (P = 0.043), 90% (P less than 0.001) and 171% (P = 0.001) higher in the British than in the Chinese women, and mean testosterone concentrations were 48% (P less than 0.001), 68% (P less than 0.001) and 53% (P = 0.001) higher in the British than in the Chinese women. The difference in testosterone concentrations between the two countries appeared to be due largely to the lower average body weight in the Chinese women. Sex hormone binding globulin did not differ significantly between the two countries in age groups 35-44 and 45-54, but was 15% (P = 0.002) lower in the British than in the Chinese women at ages 55-64. Prolactin concentrations did not differ significantly between the two countries in any age group.