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胃肝样腺癌的超微结构诊断研究 总被引:1,自引:0,他引:1
本文对6例手术切除的胃肝样腺癌进行了光镜和电镜检查,结果表明肝样分化区的肿瘤细胞具有许多肝细胞癌特征,如胞质内胆汁,向心性环层小体,糖原颗粒及癌细胞间的毛细胆管。在扩张的粗面内质网池中的球形小体和细胞间的球形小体含有层状或纤维状结晶体。这些球形小体可能为光镜下所见的嗜酸性小体,含AFP物质。 相似文献
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Waller MB 《The Nursing clinics of North America》2001,36(3):543-52, xi
This article reviews the epidemiology, cause, and current staging of gastric adenocarcinoma. An in-depth discussion regarding patient assessment and treatment options is presented. Advanced disease management and clinical trials are reviewed. 相似文献
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目的研究胃腺癌中p53、CEA的表达,探讨它们和临床病理参数与胃腺癌预后的关系。方法采用组织芯片和免疫组化检测150例胃腺癌中D53、CEA的表达.分析它们和临床病理参数与74例胃腺癌预后的关系。单因素分析用Kaplan—Meier法计算生存率并比较平均生存时间.多因素分析用COX回归模型.结果150例胃腺癌中p53阳性率为31.3%,CEA阳性率为19.3%。74例胃腺癌患者1年生存率为83.8%,3年生存率为70.3%,5年生存率为63.5%。单因素分析年龄、浸润深度、pTNM分期、切缘累及是影响胃腺癌预后的因素;多因素分析年龄、pTNM分期、切缘累及为影响胃腺癌患着预后的独立因素(P〈0.05)。结论年龄、浸润深度、pTNM分期和切缘累及是影响胃腺癌预后的重要因素,而p53、CEA、性别、肿瘤部位和大小、WHO组织学分类不是影响胃腺癌预后的因素。 相似文献
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Calcification in a gastric mucinous adenocarcinoma 总被引:1,自引:0,他引:1
R A D'Altorio 《The American journal of digestive diseases》1973,18(5):419-492
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Genes encoding pancreatic polypeptide and neuropeptide Y are on human chromosomes 17 and 7. 总被引:5,自引:0,他引:5 下载免费PDF全文
T Takeuchi D L Gumucio T Yamada M H Meisler C D Minth J E Dixon R E Eddy T B Shows 《The Journal of clinical investigation》1986,77(3):1038-1041
Pancreatic polypeptide and neuropeptide Y share 50% amino acid homology (18 out of 36 residues), suggesting that they may have common ancestral origins. cDNA clones complementary to human mRNAs encoding pancreatic polypeptide and neuropeptide Y were used to detect specific human genomic DNA sequences in human-mouse somatic cell hybrid lines. The pancreatic polypeptide gene (PPY) segregated with human chromosome 17, while the neuropeptide Y gene (NPY) segregated with human chromosome 7. Examination of cell hybrids with chromosomal rearrangements assigned PPY to the p11.1-qter region and NPY to the pter-q22 region of their respective chromosomes. 相似文献
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胰腺癌18号染色体和20号染色体的不稳定性 总被引:1,自引:0,他引:1
目的 检测胰腺癌细胞系基因组中18号染色体和20号染色体数目及结构的变化,探讨胰腺癌细胞染色体不稳定性的规律。方法 选择18号染色体和20号染色体的染色体涂染(chromosome painting)探针,用与我院实验室自建的中国人胰腺癌细胞系PC-1、PC-2、PC-4、PC-7和来源于ATCC的人胰腺癌细胞系PANC-1、ASPC-1、Miapaea、BXPC-3共8株细胞系进行双色荧光原位杂交,分析胰腺癌细胞基因组中18号染色体和20号染色体发生非整倍体的特点。结果 在8株胰腺癌细胞系中7株细胞系18号染色体为二倍体,1株为四倍体,2株有18号染色体长臂部分丢失,另有2株18号染色体与其他染色体发生重组:有3株细胞系20号染色体出现三倍体,其中2株同时有20号染色体重组发生,有3株细胞系20号染色体出现四倍体,其中1株伴有重组。结论 中国人胰腺癌细胞18号染色体长臂部分丢失,并有18号染色体与其他染色体的重组发生;20号染色体扩增和重组是高频发生事件,这些染色体的非整倍体与胰腺癌发生可能有着密切的关系。 相似文献
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目的:探讨6种胃液游离microRNAs(以下简称miRNAs)对胃癌的潜在诊断价值。方法:选择2013年于复旦大学附属中山医院进行胃镜检查的53例患者为研究对象。提取胃液并采用实时荧光定量PCR(qRT-PCR)检测其中6种游离miRNAs表达量。按疾病诊断情况将患者分为胃癌组(24例胃腺癌患者)和对照组(16例胃溃疡患者和13例慢性胃炎患者),采用非参数Mann-Whitney检验比较两组患者胃液游离miRNAs的表达差异,采用ROC曲线下面积计算诊断效能。结果:与对照组相比,胃癌组患者胃液中miR-17、miR-18a、miR-20a、miR-21和miR-378的表达差异均有统计学意义(P0.05)。miR-17、miR-18a、miR-21和miR-378具有中等诊断效能,miR-20a和miR-106b有较低诊断效能。结论:胃液6种游离miRNAs对于胃癌具有潜在诊断价值。 相似文献
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目的 探讨甲状旁腺激素相关蛋白(PTHrP)在胃腺癌组织的表达以及与分化程度、分期和转移之间的关系.方法 应用免疫组织化学链霉亲和素—生物素—过氧化物酶复合物技术( streptavidin biotin-peroxidase complex method,SABC),对60例胃腺癌手术标本(其中低分化17例、中分化28例、高分化15例)进行PTHrP检测,并分析PTHrP表达与胃腺癌组织分化程度、分期和转移之间的关系.结果 阳性细胞表现为胞浆染色,主要存在于癌组织和淋巴结转移灶,部分肿瘤间质中亦有一定表达,癌周正常组织无表达.中低分化组阳性率分别为100%(17/17)、100%(28/28),高分化组阳性率为46.7%(7/15),不同分化组之间差异有统计学意义(P<0.01).不同分期之间阳性率差异无统计学意义.结论 胃腺癌组织高表达PTHrP,中低分化组织表达阳性率较高. 相似文献
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Cancers of the esophagus, stomach and colon contribute to a major health burden worldwide and over 20% of all cancer deaths. Biomarkers that should indicate pathogenic process and are measureable in an objective manner for these tumors are rare and not established in the clinical setting. In general biomarkers can be very useful for cancer management as they can improve clinical decision-making regarding diagnosis, surveillance, and therapy. Biomarkers can be different types of molecular entities (such as DNA, RNA or proteins), which can be detected, in different tissues or body fluids. However, more important is the type of biomarker itself, which allows diagnostic, prognostic or predictive analyses for different clinical problems. This review aims to systematically summarize the recent findings of genetic and epigenetic markers for gastrointestinal tumors within the last decade. While many biomarkers seem to be very promising, especially if used as panels, further development is urgently needed to address practical considerations of biomarkers in cancer treatment. 相似文献
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目的:探讨 microRNA129(简称 miR129)在胃管状腺瘤、胃脉癌组织及其对应的癌旁组织中的表达及其临床意义。方法收集病理确诊的55例管状腺瘤、76例胃腺癌组织及对应的癌旁组织,分别用原位杂交方法检测miR129的表达,分析 miR129表达与临床病理参数之间的关系。结果癌旁胃黏膜组织中 miR-129的表达阳性率高于胃管状腺瘤组织,胃管状腺瘤组织中 miR-129的表达阳性率高于胃腺癌组织(P <0.05)。miR129在高分化胃癌组织中阳性表达率高于中、低分化组织(P <0.05);临床分期Ⅰ中的阳性表达率高于Ⅲ期;无淋巴结转移组织中的表达阳性率高于有淋巴结转移组织(P <0.05);胃管状腺癌中 miR129阳性率高于弥漫型腺癌(P <0.05)。结论miR129在胃腺癌组织内低表达,发挥着抑癌基因的作用;miR129可作为胃腺癌的判断预后的标志物。 相似文献
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Witzig R Schönberger B Fink U Busch R Gundel H Sendler A Peschel C Siewert JR Lordick F 《Endoscopy》2006,38(11):1122-1126
BACKGROUND AND STUDY AIMS: In the past, there were long delays in the diagnosis of patients with cancer of the stomach or esophagus. The objective of this study was to describe current delays in the diagnosis and treatment of gastric and esophageal adenocarcinoma and to compare the findings with those from an historical control population treated at the same institutions 10 years earlier. PATIENTS AND METHODS: Patients with biopsy-proven gastric cancer or esophageal adenocarcinoma who were treated at two academic medical centers in Germany between April and October 2003 were consecutively screened for eligibility to take part in the study. Medical charts for each patient were reviewed. Additional data were obtained via structured interviews. Main outcome measures were the total delay, and the delays related to patients themselves, to doctors, and to the hospital. Data were compared with those from a historic control group assessed in 1993. RESULTS: The median total delay for patients with gastric cancer (n = 104) was 3.5 months (range 0.3 - 29.6), and in patients with esophageal adenocarcinoma (n = 22) the total delay was significantly shorter (median 2.2 months, range 1.2 - 11.7; P < 0.05). Comparing these findings with those from an historic cohort of patients with gastric cancer (n = 100) revealed a significant decrease in the total delay (3.5 versus 8.0 months, P < 0.001). CONCLUSIONS: The current findings indicate that delays in the diagnosis and treatment of gastric cancer have become significantly shorter within the last 10 years as our understanding of and ability to treat this form of cancer have improved. 相似文献
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目的探讨局部进展期胃癌术前新辅助化疗对手术并发症的影响.方法 前瞻性收集2005年1月至2010年10月在上海交通大学新华医院进行新辅助化疗和胃癌根治术的142例局部进展期胃癌患者的资料,用Logistic回归分析方法对手术并发症的危险因素进行分析.结果 手术并发症38.0%(54/142),死亡率1.4%(2/142).年龄>60岁[相对危险性11.3(95%CI:2.50~50.6)]及体重指数(BMI)≥26kg/m2[相对危险性4.08(95%CI:1.08~15.4)]是引起手术并发症的危险性因素.结论 术前新辅助化疗对局部进展期胃癌,并不是手术并发症和死亡率的危险因素. 相似文献
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目的 研究胃腺癌中p53、CEA的表达,探讨它们和临床病理参数与胃腺癌预后的关系.方法 采用组织芯片和免疫组化检测150例胃腺癌中p53、CEA的表达,分析它们和临床病理参数与74例胃腺癌预后的关系.单因素分析用Kaplan-Meier法计算生存率并比较平均生存时间,多因素分析用COX回归模型.结果 150例胃腺癌中p53阳性率为31.3%,CEA阳性率为19.3%.74例胃腺癌患者1年生存率为83.8%,3年生存率为70.3%.5年生存率为63.5%.单因素分析年龄、浸润深度、pTNM分期、切缘累及是影响胃腺癌预后的因素;多因素分析年龄、pTNM分期、切缘累及为影响胃腺癌患者预后的独立因素(P<0.05).结论 年龄、浸润深度、pTNM分期和切缘累及是影响胃腺癌预后的重要因素,而p53、CEA、性别、肿瘤部位和大小、WHO组织学分类不是影响胃腺癌预后的因素. 相似文献
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目的 探讨血管内皮生长因子 (VEGF)在判断胃腺癌转移和预后中的作用。方法 应用免疫组织化学S P法检测 76例胃腺癌组织和 10例正常胃组织中VEGF的表达水平 ,比较VEGF的不同表达率与生存率的关系及其与肿瘤特征的相关性。结果 胃腺癌组织中VEGF阳性表达率为 72 .4 % ,较正常组织显著增高 (P <0 .0 5 ) ,与Borrmann分型、浸润深度、肿块大小、淋巴结转移程度比较相关显著 (P <0 .0 5 ) ,与分化程度相关不显著 (P >0 .0 5 ) ,VEGF阳性表达者的生存时间较阴性者短 (P <0 .0 5 )。结论 VEGF与血管发生密切相关 ,可作为判断胃腺癌转移和预后的重要指标。 相似文献