幽门螺杆菌细胞毒素相关蛋白与胃癌的相关性

目的 探讨幽门螺杆菌细胞毒素相关蛋白与胃癌的相关性。方法 采用免疫印迹法检测218例慢性浅表性胃炎(CSG)、慢性萎缩性胃炎(CAG)和胃癌(GC)患者血清细胞毒素相关蛋白抗体(CagA)。结果 CagA抗体在218例患者中总检出率为69．27％。在慢性浅表性胃炎、慢性萎缩性胃炎、胃癌患者中CagA抗体阳性率分别为55．43，74．11和90．24％，经x^2检验x^2分割法显示：三组胃疾病阳性率总体间差异有显著性；慢性浅表性胃炎与慢性萎缩性胃炎阳性率比较，差异有显著性；慢性浅表性胃炎与胃癌阳性率比较，差异有非常显著性；慢性萎缩性胃炎与胃癌阳性率比较，差异无显著性。结论 慢性萎缩性胃炎和胃癌的发生与CagA阳性Hp感染有关，定期随访CagA抗体阳性Hp感染特别是已进入慢性萎缩性胃炎阶段的患者，可能有利于胃癌的早期诊断。     

幽门螺旋杆菌感染和FasL蛋白表达在胃癌发生中的变化

目的 探讨幽门螺旋杆菌(H.pylori)感染和Fas配体(FasL)蛋白表达在胃癌(GC)发生发展中的变化.方法 选取2010年1月至2011年9月在上海浦东新区南汇中心医院诊断的胃部病变169例患者,其中慢性浅表性胃炎(CSG)25例、慢性萎缩性胃炎(CAG)28例、肠化生(IM)37例、异型增生(Dy)38例和胃癌(GC)41例.分别检测胃黏膜组织中H.pylori感染和FasL的蛋白表达,分析H.pylori感染和FasL的蛋白在GC发生发展中的相关性.结果 H.pylori感染率和FasL蛋白阳性表达率随着病情的加重而逐渐增高,Dy组及GC组H.pylori感染率比CSG组明显升高(65.8％和75.6％ vs 16.0％)(P＜0.05);IM组、Dy组及GC组FasL蛋白阳性表达率比CSG组明显升高(64.9％、78.9％和92.7％ vs 28.0％)(P＜0.05) ;GC组FasL蛋白阳性表达率比CAG组及IM组明显升高(92.7％vs 60.7％;92.7％ vs 64.9％)(P＜0.05).除CSG外,H.pylori感染与CAG、IM、Dy和GC胃黏膜组织中的FasL蛋白表达具有一致性,差异有统计学意义(P＜0.01).结论 FasL蛋白表达和H.pylori感染对评估胃黏膜癌前病变发展趋势有重要的临床价值,有助于早期发现和诊断GC.     

胃癌组织环氧合酶-2表达与幽门螺杆菌cagA+菌株感染的关系

目的探讨胃癌组织H pylori cagA感染对环氧合酶2(COX2)表达的影响。方法采用原位聚合酶链反应(PCR)及免疫组织化学技术检测60例慢性浅表性胃炎6、0例慢性萎缩性胃炎、64例肠上皮化生6、4例不典型增生、64例胃癌组织中cagA基因及COX2蛋白表达情况。结果COX2在胃癌、异型增生的阳性表达率升高,分别为70.3%、64.1%与肠上皮化生、萎缩性胃炎、浅表性胃炎相比有显著性差异(P<0.05)。在H pyloricagA阳性胃癌组、异型增生组COX2表达率明显高于H pyloricagA阴性组,两组之间有显著性差异(P<0.05);COX2阳性表达与患者性别、年龄、肿瘤大小无关,与患者浸润深度、淋巴转移、H pyloricagA感染有关。结论H pylori可通过诱导COX2表达参与胃癌病变,COX2参与胃癌的发生发展,CagA是H pylori的重要致病因素,与COX2表达上调及胃癌的发生密切相关。     

长春地区慢性胃病患者幽门螺杆菌感染状况调查

目的通过对本地区慢性胃病患者幽门螺杆菌（H.pylori）感染状况调查,了解本地区流行病学特点,为进一步阐明其与慢性胃病发生发展的关系提供理论依据。方法采用ELISA方法测定血清H.pyloriIgG抗体及CagA抗体;采取胃粘膜活检组织进行快速尿素酶试验,调查H.pylori感染情况,分析其与各种疾病的关系。结果1180例慢性胃病患者H.pylori感染率为67.11%,复合性溃疡、十二指肠溃疡、胃溃疡及慢性萎缩性胃炎感染率分别为90.9%、84.57%、83.96%和80.24%。与慢性浅表性胃炎相比差异有显著性。消化性溃疡、慢性萎缩性胃炎、胃癌和胃息肉患者血清Hp-CagA抗体的阳性率明显高于慢性浅表性胃炎（P〈0.05）。结论本地区慢性胃病患者H.pylori感染率高与多数地区的普通人群,H.pylori感染者尤其是CagA阳性者,更易发生慢性萎缩性胃炎、消化性溃疡及胃癌。     

血清胃功能检测在早期胃癌筛查中的临床应用研究

目的探讨血清胃功能检测在早期胃癌筛查中的临床应用价值。方法选取该院2015年12月至2016年12月收治的42例胃癌患者、75例胃部良性疾病患者、44例健康体检者为研究对象,所有被研究对象均进行胃镜检查,同时行镜下活检术,并按要求抽血化验,检测胃功能相关指标:胃蛋白酶原Ⅰ(PGⅠ)、胃蛋白酶原Ⅱ(PGⅡ)、PGⅠ/PGⅡ、胃泌素17(G17)及幽门螺杆菌(HP)。分析4组研究对象的血清胃功能指标的情况。结果 PGⅠ,PGⅠ/PGⅡ的表达,从低到高,分别是胃癌组、萎缩性胃炎组、胃溃疡组、浅表性胃炎组和对照组,且两两相比,差异均有统计学意义(P0.05);对照组的G17低于胃溃疡组、萎缩性胃炎组、胃癌组,胃溃疡组的G17低于胃癌组,差异有统计学意义(P0.05)。对照组的HP阳性率低于浅表性胃炎组,浅表性胃炎组低于胃溃疡组,胃溃疡组低于萎缩性胃炎组,萎缩性胃炎组低于胃癌组,差异均有统计学意义(P0.05)。结论血清胃功能检测能较好地区分胃部良性病变与恶性病变,可作为早期筛查的重要指标,且易于接受、成本低,对于检测结果阳性者,应进行胃镜下检查,以提高早期诊断率。     

血清抗幽门螺杆菌IgG抗体、胃蛋白酶原水平与胃癌发病的相关性分析

目的研究长春地区人群血清抗幽门螺杆菌(Helicobacter pylori,Hp)IgG抗体、胃蛋白酶原水平和胃癌发病的相关性,为胃癌的防治研究提供依据和流行病学资料。方法选择2008年10月至2011年2月吉林大学第一医院明确诊断的450例原发性胃癌患者作为病例组,选择同时期体检中心1072例健康体检者作为对照组。采用酶联免疫吸附(ELISA)法检测血清中Hp IgG抗体、胃蛋白酶原Ⅰ(PGI)和Ⅱ(PGII)的水平,确定Hp菌感染和萎缩性胃炎的发生状况。以PGI≤82.3μg/L,同时PGI/PGII≤6.05作为萎缩性胃炎的诊断标准。结果胃癌组与对照组相比,Hp感染阳性率明显增高(69.1%vs.52.4%,χ2=36.1,P<0.001)。胃癌组中血清PGI水平与对照组比较无显著差异(93.2vs.88.9μg/L,P<0.001),而PGII浓度显著升高(15.9vs.11.3μg/L,P<0.001),同时PGI/PGII比值明显降低(5.4vs.7.8,P<0.001)。胃癌组中患萎缩性胃炎的比例明显高于对照组(31.4%vs.10.4%,P<0.001)。多因素回归分析显示:在调整年龄和性别因素后,Hp感染和萎缩性胃炎均为胃癌发病的独立危险因素。结论本研究对象人群中Hp感染率,尤其是青年胃癌患者中Hp感染率仍然较高,Hp感染和萎缩性胃炎是胃癌发病的危险因素。与PGI相比,血清PGII浓度和PGI/PGII比值可能成为胃癌筛选的潜在血清学标志物。     

Molecular markers in Helicobacter pylori-associated gastric carcinogenesis

Helicobacter pylori infection is a known risk factor of gastric carcino-genesis. This article presents early molecular alterations associated with H. pylori chronic gastritis and advances in the molecular characterization of preneoplastic intestinal metaplasia (IM) and premalignant gastric mucosal lesions. H. pylori infection induces changes in gene expression, genomic instability and accumulation of gene mutations in the stomach epithelium. Mutations, including LOH and microsatellite instability, and gene hypermethylation are seen not only in gastric cancer, but are already detectable in IM and gastric dysplasia/adenoma. Recent reports using microarray expression analysis identified several gastric epithelial genes that are regulated by H. pylori. Among the many genes showing altered epithelial expression in response to H. pylori, some might be useful as markers to assess gastric cancer risk. Profiles of mutagenesis and gene expression in IM and dysplasia/adenoma have been characterized and represent potential markers of preneoplastic and premalignant lesions during gastric carcinogenesis.     

Helicobacter pylori-related cytokines influence gastric acid secretion and gastric mucosal inflammation in gastroduodenal ulcers

Helicobacter pylori(H. pylori) is an important pathogenic factor for gastroduodenal ulcers and gastric cancer. The level of gastric acid output may influence the outcome of those diseases. With low acid output, H. pylori can spread to the corpus of the stomach, resulting in progression to atrophic gastritis. It may cause an increased risk of gastric cancer and ulcer. In contrast, with high output, H. pylori is confined in the gastric antrum, which develops antrum-predominant gastritis. This may contribute to an increased risk of duodenal ulcer. It is well known that inflammatory cytokines including interleukin (IL)-1 beta, IL-8 and tumor necrosis factor alpha modulate gastric acid secretion. Therefore, the host immune response by the cytokines may cause these disparate pathways in gastric acid secretion.     

Helicobacter pylori infection in gastric remnant cancer after gastrectomy

Patients who have undergone distal gastrectomy for peptic ulcer are at higher risk of developing gastric remnant cancer, and chronic bile reflux is believed to increase the risk of cancer in remnant stomach. In remnant stomach, carcinogenesis may be prevented by selecting the anastomosis method with a few reflux of intestinal juice including a bile acid. How Helicobacter pylori(H. pylori) infection participate in stomal gastritis and gastric remnant cancer, same as early gastric cancer in the intact stomach, is attended. H. pylori positive rate of remnant stomach is different by examination method and a report, but its rate is decreased every year after gastrectomy and in particular low in Billroth-II(B-II) anastomosis. B-II anastomosis is followed by a significantly lower rate than B-1. This may reflect the role of bile reflux because bile reflux interferes with colonization by H. pylori. Gastric cancer excision usual increase complicates gastric remnant stomach and H. pylori infection, but while H. pylori infection lasts after gastrectomy for gastric cancer, cell proliferation increase in remnant stomach. In remnant stomach after gastrectomy for gastric cancer, while H. pylori infection continues, H. pylori infection may cause remnant gastritis and a second cancer of remnant stomach. H. pylori infection and bile reflux seem to have a synergistic effect on cell proliferation in remnant stomach and may explain the increased risk of gastric remnant cancer. The cancer-causing dominant role might changed from H. pylori infection predominance to bile reflux every year after gastrectomy. Furthermore, a prophylactic effect to carcinogenesis by H. pylori eradication therapy is expected. Eradication of H. pylori after gastrectomy for gastric cancer has been recommended.     

Low serum levels of pepsinogen and gastrin 17 are predictive of extensive gastric atrophy with high-risk of early gastric cancer

Atrophic gastritis (AG) is a well-recognized high-risk condition for developing gastric cancer (GC). Gastrin 17 (G17), a hormone secreted from antral G cells, regulates gastric acid secretion, and its serum level is a possible indicator of antral atrophy. Serum pepsinogen is well established as the indicator of AG involving the corpus. Here we investigated whether serum PG and G17 levels would be useful for determining the topographic pattern of AG and estimating the risk of GC. Enrolled were 122 Japanese patients with early GC (114 well- to moderate-differentiated cancers and 8 poorly-differentiated cancers). In addition, 178 subjects without GC were recruited as control from those undergoing endoscopic examination (non-GC group). All subjects were histologically assigned to the following four groups: non-AG, antrum-predominant AG, corpus-predominant AG, and multifocal AG, affecting the antrum and corpus. Serum concentrations of pepsinogen and G17 were determined using ELISA. Multifocal AG was more frequent in the GC group than in the adjusted non-GC group, and had the highest risk of GC (OR 25.1). Serum G17 was significantly decreased with the exacerbation of antral atrophy in the coexistence of corpus atrophy. Serum biomarker profiles showed that the low levels of pepsinogen and G17 could discriminate between multifocal AG and other types of AG, but not with pepsinogen level alone. Serologically defined multifocal AG had the highest cancer risk among other serologically defined AG groups (OR 26.9). In conclusion, the low serum levels of pepsinogen and G17 are predictive of extensive gastric atrophy with high-risk of early GC.     

端粒酶表达与幽门螺杆菌感染关系的临床观察

目的　探讨端粒酶表达与幽门螺杆菌 (HP)感染在胃癌发生发展过程中的关系及临床意义。方法　用PCR- EL ISA法、病理组织学方法及快速尿素酶试验检测 111例各种胃病变的胃粘膜活检标本中端粒酶活性和 HP感染情况。结果　胃癌组织中端粒酶表达阳性率为 85 % ,明显高于癌前病变 (2 1.2 % ) ,癌周正常组织 (10 % )及浅表性胃炎(0 ) ,差异非常显著 (P<0 .0 1)。 HP感染率在胃癌组为 5 5 % ,癌前病变组为 6 3.5 %。胃癌及癌前病变端粒酶阳性率在 HP阳性组 (90 .9%、2 4.2 % )高于 HP阴性组 (77.8%、15 .8% ) ,但统计学处理无显著性差异 (P>0 .0 5 )。结论　本研究结果显示 ,检测端粒酶活性有助于胃癌的早期诊断。胃癌及癌前病变组织端粒酶表达与幽门螺杆菌感染无关。     

血清骨桥蛋白和组织多肽特异抗原联合检测在胃癌辅助诊断中的临床应用

目的：研究血清骨桥蛋白（osteopontin,OPN）和组织多肽特异抗原（tissue polypeptide specific antigen,TPS）联合检测在胃癌诊断中的价值。方法：采用酶联免疫吸附试验检测70例经病理确诊的胃癌患者、70例浅表性胃炎患者、76例萎缩性胃炎患者及50名正常对照者的血清OPN和TPS水平。结果：胃癌患者的血清OPN[（1 610.02±1 088.30） pg/mL]及TPS水平[（148.54±88.20） U/L]明显高于浅表性胃炎、萎缩性胃炎患者及正常对照者（P<0.05）,而浅表性胃炎患者、萎缩性胃炎患者与正常对照者间的血清OPN、TPS差异无统计学意义（P>0.05）。Ⅲ~Ⅳ期胃癌患者的血清OPN水平[（2 261.8±1 330.3） pg/mL]高于Ⅰ~Ⅱ期胃癌患者[（1531.1±850.5） pg/mL]（P<0.05）,有淋巴结转移的胃癌患者血清OPN水平[（2 688.2±1 174.3） pg/mL]高于无淋巴结转移的患者[（1 281.3±818.4） pg/mL]（P<0.05）;而Ⅲ~Ⅳ期胃癌患者的血清TPS水平[（100.26±64.17） U/L]低于Ⅰ~Ⅱ期胃癌患者[（198.23±98.51） U/L]（P<0.05）,有淋巴结转移的胃癌患者血清TPS水平[（95.46±46.98） U/L]低于无淋巴结转移的患者[（179.58±100.27） U/L]（P<0.05）。OPN、TPS、癌胚抗原（carcinoembryonic antigen,CEA）平行联合检测的受试者工作特征（receiver operating characteristc,ROC）曲线下面积最大为0.849,其约登指数最大时（53.3%）的灵敏度为71.4%,特异度为81.9%。结论：血清OPN、TPS、 CEA的联合检测有助于提高胃癌与良性胃病的鉴别水平。     

生长激素释放肽在胃黏膜癌变过程中表达变化的研究

目的探讨生长激素释放肽（Ghrelin）在胃癌及其癌前疾病诊断中的价值。方法选择浅表性胃炎患者31例,萎缩性胃炎患者21例,上皮异型增生患者6例,胃癌患者19例,健康志愿者21例,分别进行胃镜检查及胃黏膜活检,应用免疫组化的方法,检测胃黏膜Ghrelin的表达水平。结果①胃黏膜Ghrelin的表达：浅表性胃炎、萎缩性胃炎、上皮异型增生患者Ghrelin积分光密度均低于对照组（P〈0．05）,萎缩性胃炎患者、上皮异型增生患者低于浅表性胃炎患者（P〈0．05）,伴有上皮异型增生患者与萎缩性胃炎患者比较无显著差异,胃癌患者Ghrelin积分光密度则高于对照组及其他各组（P〈0．05）;②Hp感染：Hp感染阳性DGR患者胃黏膜Ghrelin积分光密度低于Hp阴性组（P〈0．05）;③Hp感染阳性的胃癌组织Ghrelin积分光密度低于Hp感染阴性的胃癌患者（P〈0．05）。结论胃癌患者生长激素释放肽水平的变化对疾病的预后观察具有重要的临床价值。     

Inflammation, atrophy, and gastric cancer

The association between chronic inflammation and cancer is now well established. This association has recently received renewed interest with the recognition that microbial pathogens can be responsible for the chronic inflammation observed in many cancers, particularly those originating in the gastrointestinal system. A prime example is Helicobacter pylori, which infects 50% of the world's population and is now known to be responsible for inducing chronic gastric inflammation that progresses to atrophy, metaplasia, dysplasia, and gastric cancer. This Review provides an overview of recent progress in elucidating the bacterial properties responsible for colonization of the stomach, persistence in the stomach, and triggering of inflammation, as well as the host factors that have a role in determining whether gastritis progresses to gastric cancer. We also discuss how the increased understanding of the relationship between inflammation and gastric cancer still leaves many questions unanswered regarding recommendations for prevention and treatment.     

Helicobacter pylori associated antral gastritis in peptic ulcer disease patients and normal healthy population of kashmir, India

Aim: To study the association of Helicobacter pylori infection with chronic antral gastritis in peptic ulcer disease patients and healthy population of Kashmir.Methods: 50 peptic ulcer patients (duodenal ulcer = 46, gastric ulcer = 2 and combined duodenal and gastric ulcer = 2) and 30 asymptomatic healthy volunteers were included in this study. Peptic ulcer was diagnosed on endoscopic examination. 4-6 punch biopsies were taken from gastric antrum in all the individuals and in case of gastric ulcer an additional biopsy was taken from the edge of the ulcer to exclude its malignant nature. Helicobacter pylori (H. pylori) organism was diagnosed using three different test methods, viz. Histology (using Giemsa Stain), Microbiology (Gram Stain) and Biochemistry (using one minute Endoscopy Room Test). Histological diagnosis of H. pylori was taken as the "gold standard" for the presence of H. pylori organism. Histological diagnosis of gastritis was made using Hematoxylin and Eosin Stain and the gastritis was classified as active chronic gastritis and superficial chronic gastritis.Results: Out of 30 peptic ulcer disease patients with associated antral gastritis, 27 (90%) were positive for H. pylori on histological examination (13 superficial chronic gastritis and 14 active chronic gastritis) whereas out of 8 healthy volunteers with histological evidence of chronic antral gastritis, H. pylori was observed in 7 individuals (87.50%) (4 active chronic gastritis and 3 superficial chronic gastritis).Conclusion: A highly significant association between H. pylori infection with chronic antral gastritis both in peptic ulcer disease patients and healthy volunteers of Kashmir was found in this study. Association between H. pylori infection and chronic gastritis was 90% in peptic ulcer group and 87.50% in healthy population (P<0.005).     

幽门螺杆菌感染及乳腺癌扩增1基因表达与胃癌相关性的研究

目的探讨幽门螺杆菌（Helicobacter pylori,Hp）感染及乳腺癌扩增1（amplified in breast cancer1,AIB1）基因表达与胃癌的相关性。方法应用快速尿素酶法和改良吉姆萨（Giemsa）染色法检测Hp,用半定量逆转录-聚合酶链反应（RT-PCR）方法检测慢性浅表性胃炎组、中重度慢性萎缩性胃炎组及胃癌组中AIB1mRNA的表达水平。结果胃癌组、中重度慢性萎缩性胃炎组和慢性浅表性胃炎组Hp感染率分别为73．3％、71.4％和43．3％,AIB1mRNA表达水平分别为2．75±0．24、1.92±0．26和1．10±0．19。胃癌组及中重度慢性萎缩性胃炎组Hp感染率及AIB1mRNA的表达水平都明显高于慢性浅表性胃炎组（P〈0．05或〈0．01）。中重度慢性萎缩性胃炎组及胃癌组Hp阳性AIB1mRNA的表达水平明显高于Hp阴性（P〈0．01）。结论Hp感染可能与胃黏膜组织中AIB1mRNA的过表达有关,可能是其新的致癌机制之一。     

血清TFPI-2基因甲基化在胃癌诊断中的临床价值

目的通过测定组织及血清组织因子途径抑制物2(TFPI-2)基因甲基化,探讨其作为一种肿瘤标志物对胃癌诊断的临床价值。方法收集32例胃癌、29例萎缩性胃炎作为研究对象,以30例不排除浅表性胃炎的正常对象作为对照。应用甲基化特异性聚合酶链反应(MSP)方法,测定组织及血清TFPI-2基因甲基化状态。应用电化学发光免疫法测定癌胚抗原(CEA)、糖类抗原199(CA199)。结果组织TFPI-2基因甲基化检出率胃癌组为53.13%、萎缩性胃炎组为37.93%、对照组为3.33%。胃癌组明显高于对照组(P0.05)。血清TFPI-2基因甲基化检出率胃癌组为28.13%,萎缩性胃炎组为6.90%,对照组未检出。胃癌组明显高于萎缩性胃炎组(P0.05)和对照组(P0.05)。血清TFPI-2基因甲基化检测灵敏度为28.13%,特异性为96.61%。血清检出阳性占组织检出阳性的比率为37.93%。胃癌组血清TFPI-2基因甲基化与性别、年龄、Borrmann's分期、CEA和CA199检测结果无关(P0.05)。胃癌组血清TFPI-2基因甲基化与CEA、CA199阳性检出率分别为28.13%、21.88%、18.75%。联合3项阳性检出率为53.13%,显著高于3项各自单独检测(P0.05)。结论血清TFPI-2基因甲基化来源于组织,其对胃癌诊断特异性较高,但灵敏度较差。联合检测血清CEA、CA199有利于提高其灵敏度。血清TFPI-2基因甲基化测定对胃癌的诊断有一定价值。     

幽门螺杆菌和端粒酶在胃癌发生中的相关性研究

目的 :探讨幽门螺杆菌 (HP)、端粒酶与胃癌的关系 ,特别是胃癌发生中HP与端粒酶的相关性。方法 :将病例分为胃癌、癌前病变和慢性浅表性胃炎 3组 ,用快速尿素酶法、W -S染色法检测HP ,用ELISA法检测血清CagA -HPIgG浓度 ,以判断CagA的有无 ;分别对胃癌取胃癌组织、癌旁组织和正常胃粘膜组织 ,用PCR -ELISA法检测端粒酶活性。 结果 :HP、CagA -HP感染率在 3组间有差异 ( P <0 0 5 ) ,胃癌前病变组和胃癌组HP、CagA -HP感染率高于慢性浅表性胃炎组 ( P <0 0 1) ,癌前病变组与胃癌组间HP、CagA -HP感染率无差异 (P >0 0 5 )。胃癌组织端粒酶阳性率高于癌旁和正常组织 (P <0 0 1)。有 HP感染的胃癌与无HP感染者比较 ,端粒酶阳性率无显著差异 (P >0 0 5 ) ,CagA -HP感染的胃癌其端粒酶阳性率与CagA阴性HP感染者比 ,也无差异 (P >0 0 5 )。结论 :HP、CagA -HP和胃癌的发生有关 ,可能在胃癌发生的起始阶段起作用 ,活化的端粒酶促进了胃癌的发生、发展 ,胃癌发生过程中 ,HP、CagA -HP感染对端粒酶激活无直接影响。     

胃粘膜中Survivin与cyclinD1表达及其相关性

目的 探讨Survivin及CyclinD1基因表达在胃癌发生发展过程中的作用。 方法 采用免疫组织化学染色(SP法)检测12例慢性浅表性胃炎、32例胃粘膜肠上皮化生、32例异型增生和50例胃癌组织中Survivin与CyclinD1 表达。结果 慢性浅表性胃炎、肠上皮化生、异型增生和胃癌组织中Survivin阳性率分别为0、21.9%、37.5%和54%，CyclinD1 表达阳性率8.3%、15.6%、34.4%和48%，Survivin与CyclinD1肠上皮化生组表达均明显低于胃癌组（p<0.05）,而两者在肠上皮化生与异型增生、异型增生与胃癌组间均无显著性差异（p>0.05）。Survivin阳性表达与肿瘤大小、临床分期、血管浸润、淋巴结转移均无显著性差异（p >0.05），而组织分化关系密切（p<0.05）；CyclinD1表达与肿瘤分化程度、血管浸润及淋巴结转移关系密切（p<0.05），而肿瘤大小及临床分期无关（p>0.05）。胃癌中，Survivin与CyclinD1表达正相关。结论 Survivin及CyclinD1基因表达在胃癌发生发展过程中起着重要作用，它们的检测对胃癌的早期诊断、恶性度及预后评估提供有效的依据。     

东亚型幽门螺旋杆菌感染与胃癌发生的关系

目的 通过检测各部位慢性胃炎、胃溃疡、胃上皮内瘤变、胃癌幽门螺旋杆菌(Hp)感染情况,探讨河北省消化道肿瘤高发地区Hp感染,特别是东亚型幽门螺旋杆菌(EAS)感染与胃癌发生的关系.方法 依据国际最新悉尼系统分级标准和直观模拟评分法对慢性胃炎进行分级;分别应用Giemsa染色和免疫组织化学法检测贲门、胃体、胃窦3个部位Hp和EAS感染情况,分析Hp感染率、部位分布以及与胃癌发生的关系.结果 总体结果表明,慢性胃炎和胃溃疡中EAS阳性检出率分别为67.0%(138/206)、100.0%(12/12)明显高于上皮内瘤变43.8%(32/73)和胃癌21.7%(13/60)(P<0.05).进一步按病变部位分析贲门、胃体、胃窦和EAS阳性检出率,结果发现同一部位中慢性胃炎、胃溃疡、低级别上皮内瘤变、高级别上皮内瘤变、胃癌Hp和EAS阳性率差异无统计学意义(P>0.05).从慢性胃炎严重程度方面分析,中性粒细胞浸润程度、单核细胞浸润程度、萎缩程度、肠化生程度最严重部位均位于贲门,差异均有统计学意义(P<0.05).Hp密度最高部位位于胃体(P>0.05),但差异无统计学意义.Spearman相关性分析显示,在贲门、胃体、胃窦,Hp密度分别与中性粒细胞浸润程度、单核细胞浸润程度、萎缩程度、肠化生程度呈正相关(P均<0.05).结论 河北省消化道肿瘤高发地区ESA阳性检出率较高,其感染分别与中性粒细胞浸润深度、单核细胞浸润深度、萎缩程度、肠化生程度呈正相关,且在贲门处较易引起严重病变,贲门癌的发生与ESA感染密切相关.