头孢匹肟和亚胺培南对肠杆菌属和产ESBLs的大肠埃希菌、肺炎克雷伯菌稳定性的研究

目的调查2001～2003年头孢匹肟、亚胺培南对临床分离的肠杆菌属、产ESBLs肺炎克雷伯菌、大肠埃希菌的体外抗菌活性的变化,以了解头孢匹肟、亚胺培南两种抗生素的稳定性.方法采用Vitek-32全自动微生物分析仪GNS-120药敏卡测定头孢匹肟、亚胺培南等10种抗生素对699株临床分离株的最低抑菌浓度(MIC),同时检测肺炎克雷伯菌、大肠埃希菌产ESBLs的检出率.结果三年中,对于肠杆菌属细菌,头孢他啶、头孢曲松的体外抗菌活性有下降的趋势,而亚胺培南、头孢匹肟、氨曲南、哌拉西林/他唑巴坦的活性较为稳定.2001～2003年产ESBLs大肠埃希菌的检出率为20.9～36.8%,上升较快,产ESBLs肺炎克雷伯菌的检出率为16.7%～28.8%.头孢曲松、庆大霉素、环丙沙星、头孢匹肟、头孢他啶、氨曲南对ESBLs阳性菌抑菌浓度明显高于ESBLs阴性菌,而亚胺培南对两组的抑菌浓度没有明显差异.结论对于肠杆菌属细菌和产ESBLs肺炎克雷伯菌、大肠埃希菌,亚胺培南、头孢匹肟与喹诺酮类、氨基糖苷类、磺胺类等抗生素相比有较强的抗菌活性,且稳定性高,喹诺酮类与氨基糖苷类抗生素交叉耐药明显,且有上升的趋势.     

头孢美唑对肺炎克雷伯菌和大肠埃希菌的体外抗菌活性

目的 :评价头孢美唑对肺炎克雷伯菌和大肠埃希菌的体外抗菌活性。方法 :收集临床标本分离的肺炎克雷伯菌和大肠埃希菌共 4 2 6株 ,用Kirby Bauer琼脂扩散法作药敏试验 ;用表型确证试验检测超广谱 β内酰胺酶 (ESBLs)。 结果 :4 2 6株肺炎克雷伯菌和大肠埃希菌中 ,头孢美唑的抑菌率为 91.1% ,逊于亚胺培南 (10 0 % )、头孢哌酮 舒巴坦 (10 0 % )、哌拉西林 三唑巴坦 (99.5 % )和头孢吡肟 (94 .4 % ) ,明显优于青霉素类抗生素哌拉西林 (48.8% )和第二代头孢菌素头孢呋辛 (6 0 .1% ) ,也优于第三代头孢菌素头孢曲松 (6 2 .9% )、头孢噻肟 (6 4 .8% )、头孢哌酮 (6 5 .7% )和头孢他啶 (88.3% )。 14 2株 (33.3% )菌株经表型确证试验证实为产ESBLs;头孢美唑对产ESBLs株的抑菌率为 87.3%。结论 :头孢美唑对肺炎克雷伯菌和大肠埃希菌的体外抗菌活性优于第二、三代头孢菌素 ,逊于亚胺培南、头孢哌酮 舒巴坦、哌拉西林 三唑巴坦和第四代头孢菌素头孢吡肟。头孢美唑可用于产ESBLs株引起感染的治疗。     

美罗培南和其他4种β内酰胺类抗生素体外抗菌活性的研究

目的 :调查美罗培南和其他 4种 β内酰胺类抗生素的体外抗菌活性。 方法 :采用Etest法测定美罗培南、亚胺培南、头孢吡肟、头孢他啶和头孢哌酮 舒巴坦对 5 5 4株临床分离菌株的最低抑菌浓度 (MIC) ;检测肺炎克雷伯菌和大肠埃希菌中产超广谱 β内酰胺酶 (ESBLs)。 结果 :11.5 %的大肠埃希菌和 2 9%的肺炎克雷伯菌产生ESBLs。头孢吡肟、头孢哌酮 舒巴坦和头孢他啶对ESBLs阳性菌的MIC值明显高于ESBLs阴性株 ;而美罗培南和亚胺培南对产ESBLs株和不产ESBLs株的MIC值没有明显差别。对于肠杆菌属细菌 ,美罗培南的活性最高 (敏感率 95 % ) ,其次是亚胺培南 (82 % )、头孢吡肟 (71% )、头孢他啶、头孢哌酮 舒巴坦 (5 7%～ 5 9% )。美罗培南对于铜绿假单胞菌的MIC仅为亚胺培南的 1/ 8;对于不动杆菌属、肠球菌属 ,这 2种碳青霉烯类的MIC值分布相似。美罗培南对流感嗜血杆菌、肺炎链球菌和苯唑西林敏感的葡萄球菌的抗菌活性很高。结论 :5种β内酰胺类抗生素类的活性依次是美罗培南 (敏感率 94 .6 % )、亚胺培南 (90 .1% )、头孢吡肟 (77.6 % )、头孢哌酮 舒巴坦 (77.5 % )及头孢他啶 (76 .6 % )。     

美罗培南对临床常见革兰氏阴性细菌的药物敏感性分析

[目的]探讨美罗培南和其它17种抗生素的体外抗菌活性。[方法]细菌鉴定和药敏试验采用法国Bio Merieux公司的VITEK AMS-60全自动微生物系统GIN^ 细菌鉴定卡和GNS-437药敏卡，部分抗生素采用K—B法药敏试验。[结果]药敏试验结果表明对非产ESBLs的肺炎克雷伯菌抗菌药物敏感率依次为美罗培南(100％)、亚胺培南(100％)、头孢他啶(94．67％)、头孢吡肟(94．67％)、头孢曲松(90．67％)和头孢呋辛钠(89．33％)；对非产ESBLs的大肠埃希菌抗菌药物敏感率依次为美罗培南(100％)、亚胺培南(100％)、头孢他啶(96．49％)、头孢曲松(91．23％)头孢吡肟(89．47％)和头孢呋辛钠(85．96％)；对产ESBLs的大肠埃希氏菌和肺炎克雷伯菌，美罗培南和亚胺培南有相同抗菌活性；对铜绿假单胞菌和鲍曼不动杆菌，体外抗菌活性美罗培南优于亚胺培南。[结论]美罗培南可作为临床重症感染的有效抗生素用于治疗致病菌不明确或怀疑为耐药菌株所致的严重感染。     

抗菌药物对产超广谱β内酰胺酶大肠埃希菌和肺炎克雷伯菌接种效应的研究

目的研究美罗培南、头孢米诺、哌拉西林-他唑巴坦、头孢吡肟、头孢他啶、头孢噻肟和头孢曲松7种常见抗生素对产ESBLs大肠埃希菌和肺炎克雷伯菌的接种效应。方法用微量肉汤稀释法测定7种抗生素对22株产ESBLs大肠埃希菌和肺炎克雷伯菌在标准细菌接种量(5×10~5CFU/mL)和高接种菌量(5×10~7CFU/mL)时的MIC。结果随着接种菌量增加,美罗培南和头孢米诺对所有受试菌株的MIC无接种效应;哌拉西林-他唑巴坦对SHV-12型和1株CTX-M-14菌的MIC表现出接种效应;头孢吡肟、头孢他啶、头孢噻肟和头孢曲松存在接种效应的菌种分别占所有受试菌株的86.4%(19/22)、40.9%(9/22)、10%(22/22)和100%(22/22)。结论对22株产ESBLs大肠埃希菌和肺炎克雷伯菌,美罗培南和头孢米诺不存在接种效应,哌拉西林-他唑巴坦对部分基因型ESBLs菌株(SHV-12型和1株CTX-M-14菌株)存在接种效应,头孢吡肟、头孢他啶、头孢噻肟和头孢曲松存在接种效应。     

宿州市大肠埃希菌和肺炎克雷伯菌ESBLs的检测及基因型分布

目的探讨安徽省宿州市临床分离菌中大肠埃希菌和肺炎克雷伯菌ESBLs的检出率、耐药性及基因型分布。方法采用2005年CLSI推荐方法对收集菌株进行ESBLs确证试验;平皿琼脂对倍稀释法测定产ESBLs大肠埃希菌和肺炎克雷伯菌对13种抗菌药物的耐药性;用PCR法对产ESBLs菌株使用8对引物进行B内酰胺酶基因的扩增,扩增产物回收纯化后测序。结果宿州市临床分离大肠埃希菌和肺炎克雷伯菌中产ESBLs株的检出率分别为64．7％和60．5％。ESBLs产生株对三代头孢菌素头孢曲松、头孢塞肟、头孢他啶的耐药率为41．9％～86．3%,对环丙沙星、左氧沙星的耐药率为48．4％～85．5％,对哌拉西林／他唑巴坦、头孢哌酮／舒巴坦的耐药率为4．2％～25．8％,对亚胺培南和美洛培南100．0％敏感。PCR及测序结果显示产ESBLs菌株中,β内酰胺酶基因型以TEM和CTX—M13型为主,分别为61株和55株;亚胺培南和美洛培南是治疗产ESBLs大肠埃希菌和肺炎克雷伯菌感染的首选药物。结论宿州市临床分离大肠埃希菌和肺炎克雷伯菌中产ESBLs株的检出率和对头孢菌素类及喹诺酮类的耐药率均达到很高水平,应加强对产ESBLs株的临床监测。     

杭州市产超广谱β内酰胺酶大肠埃希菌和肺炎克雷伯菌耐药性研究

目的 :了解杭州市产超广谱 β内酰胺酶 (ESBLs)大肠埃希菌和肺炎克雷伯菌耐药情况。 方法 :收集杭州市区 5所医院临床分离的大肠埃希菌和肺炎克雷伯菌共 198株 ,用酶抑制剂增强纸片扩散试验确证产ESBLs细菌 ,琼脂扩散法测定其对17种抗菌药物的敏感性。结果 :12 7株大肠埃希菌和 71株肺炎克雷伯菌ESBLs检出率分别为 31.5 %和 15 .5 %。产ESBLs大肠埃希菌和肺炎克雷伯菌对亚胺培南和美罗培南耐药率为 0 ,抗菌作用较强的抗生素还有拉氧头孢、头孢哌酮 舒巴坦和哌拉西林 三唑巴坦 ,耐药率分别为 3.9%、3.9%和 2 3.5 %。而氨苄西林、复方磺胺甲唑、氨苄西林 舒巴坦、替卡西林 克拉维酸、阿莫西林 克拉维酸和环丙沙星的耐药率均 >5 0 %。结论 :产ESBLs大肠埃希菌和肺炎克雷伯菌耐药率较高 ,临床治疗中要选择适当抗菌药并对产ESBLs菌株实行监控。     

泌尿系感染大肠埃希菌和肺炎克雷伯菌耐药性监测

目的研究泌尿系感染中大肠埃希菌和肺炎克雷伯菌的耐药性特征,加强对其产超广谱β-内酰胺酶（ESBLs）和碳青霉烯酶的监测。方法细菌鉴定、药敏试验采用法国梅里埃VITEK2-compact全自动细菌分析系统,用微量肉汤法检测产ESBLs情况,产碳青霉烯酶表型确证试验用改良Hodge试验。结果大肠埃希菌和肺炎克雷伯菌均对阿米卡星、亚胺培南、美罗培南和哌拉西林/他唑巴坦保持高度的敏感性;大肠埃希菌对头孢唑林、环丙沙星、头孢曲松、头孢吡肟、庆大霉素、左氧氟沙星、复方新诺明的耐药率均高于肺炎克雷伯菌,且差异有统计学意义（P〈0.05）;肺炎克雷伯菌对呋喃妥因的耐药率显著高于大肠埃希菌（P〈0.05）;两种细菌对氨苄西林均保持高度耐药。本研究中段尿分离的大肠埃希菌ESBLs阳性率为50.5%,肺炎克雷伯菌ESBLs阳性率为36.8%,未发现产碳青霉烯酶肺炎克雷伯菌和大肠埃希菌。结论临床治疗由肺炎克雷伯菌或大肠埃希菌引起的泌尿系感染时,应以药敏结果为依据,合理应用抗菌药物,重视ESBLs和碳青霉烯酶的检测。     

广州地区产超广谱β-内酰胺酶大肠埃希菌、肺炎克雷伯菌的耐药性分析

目的 :检测、分析广州地区大肠埃希菌和肺炎克雷伯菌产超广谱 β 内酰胺酶 (extended spectrum β lac tamases ,ESBLs)株的发生率及耐药状况。方法 :对广州市 12家医院 1998-2 0 0 2年 5年间从临床标本分离的 164 5株大肠埃希菌和 1175株肺炎克雷伯菌进行ESBLs检测 ,用纸片扩散法 (K B法 )检测产ESBLs大肠埃希菌和肺炎克雷伯菌株对 19种抗生素的耐药率。结果 :1998-2 0 0 2年 5年间广州地区产ESBLs大肠埃希菌和肺炎克雷伯菌的检出率变化不大 ,波动在 3 2 3 %～ 41 1%、3 8 6%～ 44 7%范围之间 ,产ESBLs的大肠埃希菌和肺炎克雷伯菌 5年间对 19种抗生素的耐药率经统计处理显示 :头孢吡肟、头孢西丁、阿米卡星的耐药率存在显著性差异 (P <0 0 5 ) ,余无差异。产ESBLs大肠埃希菌对氨苄西林耐药率为 98 4%～ 10 0 % ,产ESBLs肺炎克雷伯菌对氨苄西林耐药率为 10 0 0 % ;产ESBLs大肠埃希菌对三代头孢菌素除头孢他啶外 ,其余的耐药率均在 71 1%以上 ,产ESBLs肺炎克雷伯菌对二代和三代头孢菌素的耐药率为 48 3 %～ 98 4% ,产ESBLs大肠埃希菌和肺炎克雷伯菌对头孢吡肟的耐药率有上升的趋势 ( 2 4 8%～ 41 3 %、10 2 %～ 3 0 4% ) ,亚胺培南对产ESBLs大肠埃希菌和肺炎克雷伯菌抗菌活性最强 ,耐药率为 0 0 %     

腹腔感染大肠埃希菌和肺炎克雷伯菌的耐药性监测

目的监测2008—2010年我国不同地区6所教学医院腹腔感染患者中分离的大肠埃希菌和肺炎克雷伯菌的体外药物敏感性。方法收集2008—2010年全国6所教学医院腹腔感染患者分离的大肠埃希菌和肺炎克雷伯菌。采用微量肉汤稀释法测定多种抗菌药物的最低抑菌浓度(MIC)。数据采用WHONET 5.6软件进行耐药性分析。结果 2008—2010年共收集到腹腔感染大肠埃希菌789株和肺炎克雷伯菌263株。对于大肠埃希菌,碳青霉烯类抗生素物具有高度体外抗菌活性(细菌对其敏感率96.7%～99.3%),哌拉西林-他唑巴坦(87.1%～93.2%)和阿米卡星(86.7%～89.8%)次之。细菌对头孢他啶的敏感率较高(48.5%～59.2%),2010年头孢曲松、头孢噻肟和头孢吡肟的敏感率仅为24.5%～32.8%。细菌对2种氟喹诺酮类药物的敏感率逐年降低,对氨苄西林-舒巴坦的敏感率最低,为12.4%～20.6%。大肠埃希菌中ESBLs的检出率逐年上升,从2008年的59.7%升至2010年的73.5%。厄他培南(90.4%～94.1%)、亚胺培南(95.1%～97.1%)、阿米卡星(79.2%～92.6%)和哌拉西林-他唑巴坦(80.2%～85.3%)对肺炎克雷伯菌保持了较高的抗菌活性。细菌对头孢他啶(66.3%～72.1%)和头孢吡肟(67.3%～79.1%)的敏感率略高于头孢噻肟(59.4%～61.8%)和头孢曲松(60.3%～60.6%)。细菌对2种氟喹诺酮类药物的敏感率从2008年的58.4%～60.4%到2010年的64.7%～72.1%。肺炎克雷伯菌中产ESBLs菌株的检出率略有下降,从2008年的37.6%至2010年的28.1%。产ESBLs菌株对厄他培南和亚胺培南保持了高的敏感率(88.5%～99.4%)。结论腹腔感染患者中分离的大肠埃希菌和肺炎克雷伯菌对碳青霉烯类抗生素、哌拉西林-他唑巴坦和阿米卡星保持了较高的体外敏感性。大肠埃希菌对第三代、第四代头孢菌素和氟喹诺酮类抗菌药物敏感性较低,提示临床上应谨慎使用。     

现代残疾康复理念、政策与社区康复体系研究

本研究分析了当代残疾康复的理念和理论架构,构建了以国际公约、决议和政策、国内法律和政策以及操作性工具3个层次的康复理论体系;运用包容性发展,分析探讨了当代社区康复的体系和特点;就发展康复事业、为残疾人提供全面系统的康复服务提出相关的政策建议。     

国内外唇腭裂专科护理发展现状的文献研究及分析

目的了解和分析国内唇腭裂专科护理工作发展的现状。方法检索并分析万方医学网、中国知网、Springer Link及PubMed英文数据库近6年有关唇腭裂手术的围术期护理、患儿的喂养、手术安全管理、围术期疼痛研究以及心理护理的相关文献。结果共检索出国内文献89篇(核心期刊20篇)、国外文献22篇,其中围术期护理38篇、患儿的喂养16篇、手术安全管理10篇、围术期疼痛研究10篇、心理护理15篇。结论与国外文献相比,国内论文总结和回顾性居多,应增加研究探讨性论文,从而促进唇腭裂临床护理工作专科化的发展。     

城乡学童个性行为特征调查

目的探讨农村与城市儿童的个性行为特征。方法将97名农村学龄儿童设为农村组,97名城市学龄儿童设为城市组,采用艾森克个性问卷一儿童版和Achenbach’s 行为量表一儿童版进行评定分析。结果两组学龄儿童艾森克个性问卷各维度评分均无显著性差异（P均〉0．05）,且与全国常模相一致（P均〉0．05）;农村组男学童Achenbach’s行为量表违纪行为、攻击行为及外向型因子分均显著高于城市组,女学童退缩、社交问题因子分均显著高于城市组（P〈0．05或0．01）,其他因子分均无显著性差异（P均〉0．05）。结论农村与城市儿童个性无显著差异,而农村儿童存在较多的行为问题,可能与其所受教养和生活方式有关。     

我院文职护士管理和培训的实践与体会

目的构建文职护士培训、使用及管理的科学方法。方法通过规范管理、科学施训、作为骨干大胆任用等多种管理方式,使文职护士得到充分的发展。结果文职护士群体成长为医院优秀骨干,首批满3年的文职护士顺利通过续聘考核。结论科学的管理培训是文职护士成长的重要基石,对医院护理管理有着重要作用。     

Comparison of short-term and long-term protocols for stabilization and preservation of RNA and DNA of Leishmania, Trypanosoma, and Plasmodium

Molecular tools continue to be important in the prevention and control of parasitic diseases. However, using these techniques directly in the field remains a major challenge. Therefore, the preservation of clinical samples collected from endemic field areas for later analysis remains an important preanalytical process. This study aimed at identifying a suitable protocol for stabilization and preservation of RNA and DNA in bioclinical specimens for Trypanosoma, Leishmania, and Plasmodium research. Both spiked and unspiked blood samples were preserved in 7 protocols (different media; storage temperatures). Samples were evaluated for possible degradation of DNA and RNA along the storage duration up to the 10th week. Nucleic acid targets were assessed as follows: (i) Trypanosoma and Plasmodium RNA analysis was done using real-time nucleic acid sequence-based amplification (RT-NASBA) for 18S rRNA and for stage-specific Pfs25 mRNA, respectively; (ii) Trypanosoma DNA assessment analysis was conducted by using a conventional PCR for 18S rDNA; (iii) Leishmania RNA analysis was performed with a quantitative NASBA for 18S rRNA and Leishmania DNA assessment with an RT-PCR for 18S rDNA. Findings suggested that a newly developed L3™ buffer proved to be reliable and suitable for both short- and long-term preservation of parasite nucleic acid material. This buffer is envisaged to be suitable for utilization in field situations where resources are limited.     

History of violence and subjective health of mother and child

Objective: To study the self-reported prevalence of experienced violence among a cohort of women about two years after giving birth, their health during pregnancy, pregnancy outcomes and their experience of their child’s health.

Setting and subjects: In 2011, a total of 657 women participated in phase III of the Childbirth and Health Cohort Study in Icelandic Primary Health Care, 18 to 24 months after delivery. The women had previously participated in phase I around pregnancy week 16 and phase II 5–6 months after delivery. Data were collected by postal questionnaires.

Main outcome measures: Women’s reported history of experienced violence, sociodemographic and obstetric background, self-perceived health, the use of medications and their child’s perceived health.

Results: In phase III, 16% of women reported experiencing violence. These women felt less support from their current partner (p?p?p?p?p?p?=?0.008).

Conclusions: Our study confirms that a history of violence is common among women. A history of violence is associated with various maternal health problems during and after pregnancy, a higher rate of caesarean sections and maternal reports of health problems in their child 18–24 months after birth.

• KEY POINTS

• Violence is a major concern worldwide. Understanding the impact of violence on human health and developing effective preventive measures are important elements of any public health agenda.

• ??The reported prevalence of experiencing violence was 16% among women attending antenatal care in the primary health care setting in Iceland.

• ??Women with a history of violence reported worse health in general during pregnancy and delivered more often by caesarean section, compared to women with no such history.

• ??Mothers with a history of violence also evaluated the general health of their child as worse than women with no such history.

• ??The findings of this study support the importance of recognizing and addressing experienced violence among women in primary care.

     

Rates and risks of transmission of smallpox and mechanisms of prevention

In 1980, the World Health Organization declared smallpox eradicated from the world; the last known natural case had occurred in Somalia in 1977, and the United States had stopped routinely vaccinating its citizens in 1972. However, with increasing concerns regarding domestic and international terrorism, smallpox has resurfaced as a potential threat to global health. We review the direct and indirect modes of smallpox transmission and how patterns of transmission vary substantially, depending on the severity of circulating disease, vaccination status, environmental and socioeconomic factors, and the setting of an outbreak. We examine mechanisms for controlling outbreaks of disease and preventing further transmission in the event of an outbreak, with an emphasis on smallpox vaccination.     

通用设计原则与产品研发策略

本文介绍了通用设计的概念和设计原则,并阐述了根据此原则实施通用设计的产品研发策略。通用设计惠及的不仅是残疾人,也惠及了包括普通公众在内的广泛人群,以及企业。应将通用设计的原理应融入政府相关政策和未来发展的规划中,为残疾人以及更多人群提供合理便利的通用设计产品。     

Prevalence and severity of nausea and vomiting of pregnancy and effect of vitamin supplementation.

OBJECTIVE: Although nausea and vomiting of pregnancy is the most common medical condition during pregnancy, there are many unanswered questions regarding its cause, epidemiologic features and optimal management. The objectives of this study were to ascertain the prevalence of nausea and vomiting in a sample of Canadian women, to characterize the distribution of their severity and to investigate the role of vitamin B6 deficiency in their etiology. DESIGN: Prospective study. SETTING: Antenatal counselling service for pregnant women. PATIENTS: Three cohorts of women: a prospective, population-based cohort of 193 women, to estimate the rate and severity of nausea and vomiting (cohort A); a cohort of 555 women who sought advice for nausea with or without vomiting, to study the correlation between the maximal daily number of episodes of vomiting and maximal weight loss (cohort B); and a prospective cohort of 301 women who reported vomiting, to correlate vitamin supplementation with vomiting (cohort C). INTERVENTIONS: All 3 cohorts were interviewed during the counselling session, and cohort B was followed up prospectively. OUTCOME MEASURES: Frequency of nausea and vomiting, weight loss, maximal number of daily episodes of vomiting, rate of multivitamin supplementation. RESULTS: Overall, 67% of the women in cohort A reported experiencing nausea or vomiting, or both; 22% reported vomiting, and 9% experienced weight loss. In cohort B there was a significant correlation between the maximal number of daily episodes of vomiting and maximal weight loss, although there was wide variation (r2 = 0.25, p < 0.001). There was a highly significant correlation between the number of daily vomiting episodes and mean weight loss (r2 = 0.99). In cohort C, vomiting was significantly associated with lack of supplementation with multivitamins before 6 weeks' gestation (p = 0.002). CONCLUSIONS: The relation between number of daily vomiting episodes and mean weight loss may serve as a clinical tool to assess the severity of nausea and vomiting in pregnancy and the success of anti-emetics and rehydration regimens. Further study is needed to elucidate the biologic basis of the observed association between vomiting and lack of multivitamin supplementation in early pregnancy.     

胃癌DNA含量与E-cad、EGFR表达的关系及其意义

目的　探讨胃癌组织DNA含量与E cad、EGFR表达的关系 ,评价其在浸润、转移潜能及预后判断中的作用。方法　应用图像分析仪及SP免疫组化法检测 30例正常胃黏膜上皮、30例不典型增生和 5 0例胃癌组织DNA含量与E cad、EGFR蛋白表达情况。结果　①正常胃黏膜上皮、Ⅰ、Ⅱ、Ⅲ级不典型增生及胃癌组的DI、PI、S %、>5c %逐渐增高 ,与胃癌分期、淋巴结转移显著相关 (P <0 0 1)。②E cad在正常胃黏膜上皮阳性表达率 10 0 % ,EGFR呈阴性表达 ;Ⅰ、Ⅱ、Ⅲ级不典型增生及胃癌E cad阳性表达率逐渐降低 ,EGFR的阳性表达率逐渐升高 ,且差异显著 (P <0 0 5 ) ;E cad表达减弱、EGFR表达升高与胃癌分化差、淋巴结转移显著相关 (P <0 0 1)。③E cad表达阴性的胃癌DNA指数及EGFR表达水平显著高于E cad阳性 (P <0 0 1)。结论　检测DNA含量及E cad、EGFR蛋白表达有助于胃癌的早期诊断及转移潜能和预后的判断。