Positive correlation between miR-570 and prognosis of colon cancer: inhibition of cell proliferation and invasion

Clinical and Experimental Medicine - Colon cancer is one of most common cancers. The progression of various cancers is driven by miRNA-570. The role of miRNA-570 in the progression of colon cancer...     

人胎视网膜发生的光镜和电镜观察

本文在光镜下观察40例人胎视网膜的发生,在电镜下观察15例人胎视网膜视细胞、双极细胞、节细胞的发育。结果表明:胚胎第9周时神经上皮可分内、外成神经细胞层。第10周时内、外成神经细胞层之间的Chievitz带消失;第11周时节细胞从内成神经细胞层内迁;第13周节细胞与内成神经细胞之间出现内网层;第16周始双极细胞从外成神经细胞层中内迁形成外网层和内核层。第20周后视网膜各层形成。而视细胞、双极细胞、节细胞的超微结构于胎儿8个月后才发育完善。其结构与成人基本相同。     

超声乳化联合小切口硬核白内障摘除的临床观察

目的 探讨贫困地区超声乳化联合小切口硬核白内障摘除联合PMMA人工晶状体植入手术的疗效。方法 对336例(336只眼)Ⅳ级以上核白内障行超声乳化联合小切口晶状体摘除联合PMMA人工晶状体植入术。结果 术后1天、3天视力在0．5以上分别为240只眼(71．4％)、265只眼(78．8％)。术中主要并发症为后囊破裂。术后主要并发症为角膜水肿、眼压升高。结论 超声乳化联合小切口晶状体摘除治疗Ⅳ级以上核白内障切口小，术后反应轻，散光小，并且视力恢复快，费用低。手术技巧的提高可避免或减少术中术后并发症。     

甲状腺肿瘤X线造影与超声检查对比分析

本文报告了经手术病理证实的53例甲状腺肿瘤,均作了甲状腺造影和B超检查.通过比较分析,我们认为造影对确定肿瘤的良、恶性以及延伸到胸骨后的异位甲状腺肿瘤有其优越性,是一项有效的检查方法;超声则能准确地判断肿瘤的囊、实性,适合碘过敏患者的检查.两种检查各有特点,配合使用有利于对甲状腺肿瘤的诊断和治疗.     

硒的人体最大安全摄入量研究 三、恩施高硒点居民血和发中某些拮抗金属元素的含量

恩施高硒区的硒来源于煤.煤中除硒外,尚有高含量的氟.此外,本地尚分布有丰富的硫铁矿,居民用作生产硫磺.由于环境污染严重,因此在观察硒的毒性时,应考虑其它有关元素的含量.本文测定了居民发中的Cd,Hg,As以及全血中的Cd,Zn和Cu等元素.从组织和血中这些元素的含量来考虑,唯有Cd对硒中毒的影响值得注意.     

浅谈手术室人性化管理

人性化的管理是以科学的人性观为基础的以人为本的管理,要求正视人的需求,肯定人性的合理性,维护人的个体价值。通过对我院手术室进行人性化管理,充分调动了护士的积极性、主动性、创造性,增强了护理队伍的凝聚力,使手术室工作有声有色。1对象本组11人,护士2人、护师8人、主管护师1人,均为女性,年龄20岁~40岁。2方法2.1精神培养提高手术室护士的道德修养,是手术室护士的第一课。我们努力做好以下几点:①具有高尚的医德医风和奉献精神,有时一名护士的形象,通过她的精神面貌和言行表现出内在的品德,胜过一个护士的经验和业务水平所起的作用。…     

羧酸酯酶1和羧酸酯酶2基因表达量与体质量指数的关系及其基因多态性分析

目的 通过检测健康志愿者的羧酸酯酶1 (carboxylesterase 1,CES1)和羧酸酯酶2 (carboxylesterase 2,CES2)的基因多态性和基因表达水平,探索CES1和CES2在代谢中的作用。方法 从48例健康志愿者获得血样并提取DNA,对DNA进行二代基因测序,并提取总RNA检测基因表达量。使用多元线性回归分析CES1和CES2基因表达量与性别、年龄、体质量指数(body mass index, BMI)的关系。结果 CES1的基因表达量为141.8(72.7,237.8),CES2的基因表达量为74.4(30.8,133.6)。多元线性回归分析中,BMI与CES2的基因表达有关,性别、年龄和BMI与CES1的基因表达无关。发现CES1 20个基因变异,其中10个会引起氨基酸序列改变;发现CES2 6个基因变异,其中2个引起氨基酸序列改变。结论 发现CES2的表达水平与BMI相关,CES1的表达水平与BMI无明显相关,基因预测结果提示CES1的遗传变异可能影响其功能表达。     

Anti-idiotypes to oxidized LDL antibodies in intravenous immunoglobulin preparations--possible immunomodulation of atherosclerosis

OBJECTIVE: The aim of this study was to examine whether intravenous immunoglobulin (IVIg) preparations contain anti-oxLDL and anti-anti-oxLDL antibodies. BACKGROUND: Oxidized low-density lipoprotein (oxLDL) is one of the major players in atherogenesis. IVIg can reduce atherosclerosis in experimental animal models. METHODS: Six commercial IVIg preparations were tested for the presence of anti-oxLDL antibodies by EIA. Inhibition studies were performed with the different IVIg preparations and IgGs purified from a pool of sera from patients with high anti-oxLDL antibody levels. Absorption assays were carried out to evaluate the presence of anti-idiotypes against anti-oxLDL antibodies in IVIg preparations. RESULTS: IVIg preparations tested had various degrees of reactivity towards oxLDL. Absorption experiments suggested that the reactivity was specific because it could be effectively absorbed by oxLDL and not by an irrelevant antigen PPD. The reactivity was smaller than that observed with the IgG from the pool with high anti-oxLDL antibody levels. Inhibition studies with IVIg demonstrated 20-45% inhibition of anti-oxLDL binding to oxLDL, compared to 76% inhibition by the pool with high anti-oxLDL levels. To investigate the presence of anti-idiotypes against anti-oxLDL antibodies within IVIg, F(ab')2 fragments of IVIg IgG were used to absorb IgG F(ab')2 fragments from the pool of sera with high anti-oxLDL levels. The decreased binding to oxLDL of the absorbed supernatants shows that IgG F(ab')2 fragments of the IVIg preparations had high inhibitory capacities ranging from 65 to 90%. CONCLUSIONS: IVIg preparations contain both anti-oxLDL and anti-anti-oxLDL activity. This finding may explain the immunomodulating effect of IVIg in atherosclerosis.     

陕西、青海、新疆三省(区)部分人群庚型肝炎病毒血清学调查

目的：调查陕西、青海、新疆三省（区）部分人群庚型肝炎病毒（HGV／GBV）血清学特征。方法：采用ELISA方法，共调查三省（区）1469份血清中GBV－IgG抗体。结果：少数民族血清GBV－IgG抗体的阳性率（藏族4．11％，蒙古族5．36％，维吾尔族4．55％，回族4．00％）略高于汉族（1．36％－1．73％），但差异无显著性（P＞0．05）；吸毒人群GBV－IgG阳性率（11．30％，34／301）明显高于正常人群（2．44％，18／736），（P＜0．01）；献血员GBV－IgG阳性率为1．02％－7．68％。结论：三省区民族间GBV－IgG抗体阳性差异无显著性，血源性传播是其重要途径，应加强对献血员及吸毒人员的监管。