两种不同类型的胃癌组织中DNA氧化损伤的水平及临床意义

目的检测胃腺癌、印戒细胞癌组织及正常胃黏膜组织中8-羟基脱氧鸟苷（8- oxodGsn）水平,探讨DNA氧化损伤与不同类型胃癌临床指标间的关系。方法提取42例胃癌（腺癌28例,印戒细胞癌14例）及癌旁5cm以外的正常组织的DNA,并采用核酸酶P1和碱性磷酸酶消化成单个核苷,再采用高效液相色谱-串联质谱法（LC- MS/MS）检测其8- oxodGsn的水平;同时联合免疫组化法对组织中的8- oxodGsn进行定位分析。结果不同类型胃癌组织与正常组织中8- oxodGsn水平的差异均有统计学意义（均P＜0.05）。8- oxodGsn主要分布于肿瘤细胞的细胞质和细胞核内,腺癌细胞中以细胞核分布居多,印戒细胞癌中以细胞质分布居多。不同类型胃癌组织中8- oxodGsn水平在癌组织浸润深度、淋巴结转移程度、远处器官转移程度、临床病理分期等差异均有统计学意义（均P＜0.05）。结论8- oxodGsn水平在两种类型的胃癌组织中均有不同程度的增加,提示DNA氧化损伤可能是胃癌发生、发展的重要因素。     

2005年至2008年全国HLA低分辨基因分型检测室间质量评价结果分析

Objective National external quality assessment (EQA) results from 2005 to 2008 for HLA class Ⅰ (A, B) and class Ⅱ (DRB1) low-resolution DNA typing were summarized with the goal of exploring strategies to assure and improve HLA DNA typing performance in clinical testing. Methods HLA allele results from the four consecutive years EQA events were analysed. Different kinds of errors were described and classified, and the possible causes were discussed. Results Participant laboratories were increasing in the four consecutive years with the number of 22, 28, 47 and 61 in 2005, 2006, 2007 and 2008,respectively. 2 844 HLA DNA typings were returned from the participants during the 4 years EQA surveys, and overall 30 errors (1.05%) were identified. These 30 errors were classified into two major types of errors including 25 technical genotyping errors and 5 human errors. The proportion of laboratory participants which made mistakes was 13. 6%, 10. 7%, 10. 6% and 16.4% in 2005, 2006, 2007 and 2008, respectively. Conclusions Above 10% of participant laboratories exhibited errors in the four consecutive years HLA molecular typing EQA surveys. Relevant important attentions should be greatly paid to clinical HLA molecular typing test.     

2005年至2008年全国HLA低分辨基因分型检测室间质量评价结果分析

Objective National external quality assessment (EQA) results from 2005 to 2008 for HLA class Ⅰ (A, B) and class Ⅱ (DRB1) low-resolution DNA typing were summarized with the goal of exploring strategies to assure and improve HLA DNA typing performance in clinical testing. Methods HLA allele results from the four consecutive years EQA events were analysed. Different kinds of errors were described and classified, and the possible causes were discussed. Results Participant laboratories were increasing in the four consecutive years with the number of 22, 28, 47 and 61 in 2005, 2006, 2007 and 2008,respectively. 2 844 HLA DNA typings were returned from the participants during the 4 years EQA surveys, and overall 30 errors (1.05%) were identified. These 30 errors were classified into two major types of errors including 25 technical genotyping errors and 5 human errors. The proportion of laboratory participants which made mistakes was 13. 6%, 10. 7%, 10. 6% and 16.4% in 2005, 2006, 2007 and 2008, respectively. Conclusions Above 10% of participant laboratories exhibited errors in the four consecutive years HLA molecular typing EQA surveys. Relevant important attentions should be greatly paid to clinical HLA molecular typing test.     

我国汉族人群MEF2A基因多态性位点的检测及其与冠状动脉粥样硬化心脏病相关性的研究

目的检测我国汉族人群中MEF2A基因存在的多态性位点，调查这些多态性位点与冠状动脉粥样硬化性心脏病发生的相关性。方法用单链构象多态性和（或）聚合酶链反应产物直接测序法对257例冠状动脉粥样硬化性心脏病阳性病例、157例冠状动脉粥样硬化性心脏病阴性对照及242名健康体检者MEF2A基因的编码区和5′非翻译区进行全基因扫描、发现多态性位点，明确多态性各位点的等位基因频率和基因型频率，研究不同基因型与冠状动脉粥样硬化性心脏病发生的相关性。结果在MEF2A基因的编码区中共筛查到4处基因多态性位点，其中3处为单核苷酸多态性位点（891C／T，1305G／A，1353G／T），1处为三联核苷酸缺失多态性位点（1294～1296CCG／-）。经病例一对照研究显示，891C／T位点TT基因型频率在病例组和对照组分别为8．2％和3．9％，经统计学检验差异无统计学意义（P=0．088）。其余3个位点的等位基因频率和基因型频率在病例组和对照组之间分布相近，差异无统计学意义（P〉0．05）。结论MEF2A基因的4个多态性位点（891C／T，1305G／A，1353G／T，1294-1296CCG／-）与我国汉族人群中冠状动脉粥样硬化性心脏病的发生无显著相关性。     

创伤性结肠破裂一期手术临床治疗研究

目的：整理该院创伤性结肠破裂患者的一期手术资料,探讨一期手术对创伤性结肠破裂的治疗效果。方法方便选取该院2008年1月＿2016年10月收治的54例创伤性结肠破裂患者,根据患者手术情况分为实验组与对照组,每组各27例患者,实验组采用一期手术进行治疗,对照组在此基础上采用二期手术进行治疗,比较两组的手术治疗效果。结果实验组治疗有效率100.00%,对照组治疗有效率为92.59%,实验组不良反应发生率18.52%,对照组不良反应发生率29.63%,实验组治疗满意度评分(86.23±5.23﹚分,对照组治疗满意度评分(64.45±5.78﹚分,差异具有统计学意义(P﹤0.05﹚。结论创伤性结肠破裂多为外伤引起,患者在外力作用下导致发病,且结肠破裂的临床症状特异性不强,通过一期手术治疗效果显著,但依旧需要根据患者的临床症状,病情程度选择治疗术式,以保证患者的治疗效果,降低患者出现术后并发症的发病率,一期手术治疗创伤性结肠破裂效果显著,值得临床推广应用。     

低剂量饮酒抑制大鼠肝组织DNA中8-oxo-dGsn水平

目的 检测低剂量饮酒大鼠肝组织DNA中氧化标志物8-羟基脱氧鸟苷(8-oxo-dGsn)水平,评价低剂量饮酒对肝脏组织氧化应激的影响.方法 4月龄的健康雄性SD大鼠48只,随机分为对照组和饮酒组,饮酒组每天灌胃56度二锅头酒每天每公斤低于2g(＜2g/kg),对照组每天灌胃同等体积的生理盐水.在灌胃4、8、12周时,用放射性核素稀释高效液相-串联质谱(ID-LC-MS/MS)方法检测大鼠肝组织DNA中氧化标志物8-羟基脱氧鸟苷(8-oxo-dGsn)含量;用分光光度法测定抗超氧阴离子(O2-)能力和谷胱甘肽过氧化物酶(GSH-PX)活力.结果 低剂量饮酒4、8、12周后的肝组织DNA中8-oxo-dGsn含量均较同时间点对照组低,差异有统计学意义(P＜0.05);低剂量饮酒4、8、12周后的肝组织中抗O2-能力与GSH-PX活性均增强,与对照组相比差异有统计学意义(P＜0.05).结论 低剂量饮酒可抑制大鼠肝组织DNA中的氧化水平,可能与肝脏中抗氧化酶活性的增高有关.     

产毒型霍乱弧菌实时定量三重TaqMan PCR快速检测方法的建立

应霍乱弧菌产生霍乱毒素的能力.     

2005年至2008年全国HLA低分辨基因分型检测室间质量评价结果分析

Objective National external quality assessment (EQA) results from 2005 to 2008 for HLA class Ⅰ (A, B) and class Ⅱ (DRB1) low-resolution DNA typing were summarized with the goal of exploring strategies to assure and improve HLA DNA typing performance in clinical testing. Methods HLA allele results from the four consecutive years EQA events were analysed. Different kinds of errors were described and classified, and the possible causes were discussed. Results Participant laboratories were increasing in the four consecutive years with the number of 22, 28, 47 and 61 in 2005, 2006, 2007 and 2008,respectively. 2 844 HLA DNA typings were returned from the participants during the 4 years EQA surveys, and overall 30 errors (1.05%) were identified. These 30 errors were classified into two major types of errors including 25 technical genotyping errors and 5 human errors. The proportion of laboratory participants which made mistakes was 13. 6%, 10. 7%, 10. 6% and 16.4% in 2005, 2006, 2007 and 2008, respectively. Conclusions Above 10% of participant laboratories exhibited errors in the four consecutive years HLA molecular typing EQA surveys. Relevant important attentions should be greatly paid to clinical HLA molecular typing test.     

播散性带状疱疹5例报告

1979~1985年我科收治了136例带状疱疹(HZ)患者,其中5例(3.7%)属播散性带状疱疹(DHZ)现将该5例资料报告如下.     

幽门螺杆菌感染胃黏膜组织的DNA及RNA氧化损伤水平比较及致癌机制探讨

目的通过检测幽门螺杆菌(Hp)感染患者及正常对照人群胃黏膜组织DNA及RNA氧化损伤水平,探讨氧化应激因素在HP感染致癌中的作用。方法 60例Hp感染及无Hp感染胃黏膜组织石蜡包埋,切片免疫组织化学法染色,研究级显微镜下观察采集图像,IPP软件定量分析,检测DNA及RNA氧化产物水平,并行统计学分析。结果 Hp感染患者与正常人胃黏膜局部RNA氧化水平标记物8-oxo Gsn的免疫组化阳性染色OD值分别为0.117±0.015和0.073±0.012,差异有统计学意义;Hp感染患者与正常人胃黏膜局部DNA氧化水平标记物8-oxod Gsn的免疫组化阳性染色OD值分别为0.220±0.036和0.210±0.055,差异无统计学意义。结论 Hp感染致人胃黏膜局部RNA氧化水平增高,可能与Hp致癌发病机制相关。