Protection of chickens against highly lethal H5N1 and H7N1 avian influenza viruses with a recombinant fowlpox virus co-expressing H5 haemagglutinin and N1 neuraminidase genes

Inactivated whole avian influenza virus (AIV) vaccine provides protection against homologous haemagglutinin (HA) subtype virus, but poor protection against a heterologous HA virus. Moreover, it induces chickens to produce antibodies to cross-reactive antigens, especially nucleoprotein, which is limits AIV serological surveillance. In this study, a recombinant fowlpox virus co-expressing HA (H5 subtype) and NA (N1 subtype) genes of AIV was evaluated for its ability to protect chickens against intramuscular challenge with a lethal dose of highly pathogenic (HP) AIV. Susceptible chickens were also vaccinated by wing-web puncture with the parent fowlpox vaccine virus. Following challenge 4 weeks later with HPAIV, all chickens vaccinated with recombinant virus were protected, while the chickens vaccinated with either the unaltered parent fowlpox vaccine virus or unvaccinated controls experienced 100% mortality following challenge. This protection was accompanied by the high levels of specific antibody to the respective components of the recombinant vaccine. The above results showed that rFPV-HA-NA could be a potential vaccine to replace current inactivated vaccines for preventing AI.     

宫腔镜电切术在宫颈疾病中的应用

目的探讨应用官腔镜电切术治疗宫颈病变的临床效果。方法2002年1月～2003年6月，应用宫腔电切镜切除359例各类宫颈病变。结果359例均在门诊一次完成手术，手术时间5～15min，术中出血2-10ml。术后病理诊断慢性官颈炎332例，宫颈上皮内瘤样病变（cervical intraepithelial neoplasia，CIN）Ⅰ～Ⅱ级26例，CINⅢ级1例。335例随访2～12个月，平均9个月。术后2个月308例慢性富颈炎一次性治愈率98．7％（304／308）；237例随访1年宫颈糜烂、宫颈息肉及宫颈肥大未复发；27例CIN术后随访6～12个月未显示CIN病变。结论宫腔镜电切术治疗宫颈病变，疗效肯定，并发症少，值得推广。     

中老年普外非急诊入院患者营养状况调查(附169例分析)

本文报道了169例中、老年普外科非急诊入院患者营养状况调查,多参数指标包括人体测量和实验室检查。结果显示40％患者有不同程度的营养不良。120例(71％)患者在8项调查指标中,有2～6项异常。按消化道和非消化道疾病进行比较,体重身高指数(WT/HT)、上臂周径(AMC)在中年组有显著差异(P<0.05)。     

Evaluation of cytotoxicity of some Mannich bases of various aryl and arylidene ketones and their corresponding arylhydrazones.

Mannich bases were synthesized and converted to the corresponding arylhydrazones. X-ray analysis of a ketone (1a) and a hydrazone (4d) revealed structural features of interest. All of the compounds showed cytotoxicity toward murine lymphocytic leukemia L1210 cells in the 4.9-25.0-microM range. The correlation coefficients generated by plotting the IC50 values (the concentrations of compounds that inhibit the growth of tumors by 50%) of some hydrazones against certain electronic, hydrophobic, and steric constants of the aryl substituents indicated only weak correlations. A few ketones and hydrazones displayed significant cytotoxicity to the WiDr human colon cancer cells, and these derivatives, especially the ketones, may serve as prototypes for future drug development. The KB tumor (a human epidermoid carcinoma of the nasopharynx) was somewhat refractory to selected compounds. In an in vitro assay conducted by the National Cancer Institute and involving approximately 53 tumor cell lines originating from eight neoplastic diseases, 65% of the compounds showed some selectivity toward one or more groups of cancers, principally leukemia, melanoma, and colon cancer. The bioevaluation of the ketones and hydrazones against the L1210, WiDr, and KB tumors, as well as evidence from proton nuclear magnetic resonance studies did not support the suggestion that hydrazones may be prodrugs of the corresponding ketones.     

小鼠实验性糖尿病对胰腺腺泡细胞形态学的影响

为了探讨实验性糖尿病对胰腺腺泡细胞的影响，我们用四氧嘧啶对小鼠建造糖尿病模型。８ｗｋ后，取小鼠胰尾组织作光镜和电镜观察。结果：实验性糖尿病小鼠胰腺内部分腺泡细胞萎缩、细胞排列松散，并有大量慢性炎症细胞浸润。电镜下可见粗面内质网扩张，线粒体嵴紊乱、空泡变性，胞浆内出现髓样小体，酶原颗粒减少。表明实验性糖尿病对小鼠胰腺腺泡细胞的结构有一定的损害作用，进而使胰腺外分泌部的分泌功能受到影响。     

Relationship among hyperglycemia growth hormone (CSF) and insulin in serum of cerebral hemorrhage]

40 patients of stroke were studied. The results showed that in Cerebral hemorrhage the correlation between ascending Growth hormone (GH) of CSF and insulin of serum was negative, but the positive correlation between ascending GH (CSF) and hyperglycemia. In patients of cerebral thrombosis the results of values above were no correlation. The pathological significance in such cases was discussed.     

神经精神性狼疮MRI检查的临床应用价值

目的：探讨神经精神性狼疮(NPSLE)MRI表现特点及其与临床的关系。方法：52例NPSLE患者在出现症状后1天～2个月内进行头部MR检查。另选取26例无神经系统症状的SLE患者和27例健康志愿者行MR检查并与NPSLE组比较。结果：NPSLE的MRI主要表现为斑点状和大片状脑炎样病变、出血、脑梗死和脑萎缩，额、顶叶和基底节区好发。表现为点状病灶的临床以精神障碍和头痛为主要表现，片状病灶以癫痫和偏瘫为主要表现。临床病情严重患者的片状病灶的发生率、病灶总面积较轻微组显著增高。片状的，边缘模糊的，T1WI等、略低信号，T2WI高信号的病灶变化迅速。结论：NPSLE的MRI检查有助于明确脑病性质及更准确的评估病情和预后，从而指导治疗和评价疗效。     

我院聘用护士防范护理纠纷的知识掌握情况调查

随着法律制度的健全、完善和普及，人们的法制观念和维权意识逐步增强，特别是《医疗事故处理条例》的实施及一些负面报道，使医疗纠纷日趋增加。近年来，随着卫生系统人事制度的改革，聘用护士已成为各医院护理工作的主要力量。这部分人年龄小、经验不足、责任心及风险意识差，存在着潜在的护理纠纷隐患，必须对其加强法律法规的教育。为了解聘用护士对防范护理纠纷知识的掌握情况，对我院104名聘用护士进行相关调查，结果如下。     

血管内皮生长因子在糖尿病大鼠视网膜中的表达

目的 :利用糖尿病大鼠动物模型 ,通过大鼠视网膜中血管内皮生长因子 ( vascular en-dothelial growth factor,VEGF)的表达情况 ,探讨 VEGF在糖尿病视网膜病变 ( diabetic retinopa-thy,DR)发展过程中作用机理。方法 :复制链脲佐菌素 ( streptozocin,STZ)糖尿病大鼠动物模型 ,取不同组、不同时期大鼠视网膜 ,利用免疫组织化学及原位杂交方法 ,检测 VEGF蛋白质及 m RNA的表达情况。结果 :1正常对照组 ( M)、血糖恢复组及糖尿病 1个月组 ( M1)大鼠视网膜均无 VEGF蛋白质及 m RNA的阳性表达 ;2糖尿病 3个月组 ( M3 )未见 VEGF m RNA表达 ,而在内核层及节细胞层有 VEGF蛋白表达阳性 ( 34%) ,此表达与胶质纤维酸性蛋白 ( GFAP)染色阳性细胞相同 ;3糖尿病 5个月组 ( M5) VEGF m RNA表达阳性率为 67%,表达位于视网膜各层 ,内界膜中的表达与 GFAP免疫组化阳性分布相同 ,VEGF蛋白质表达强阳性 ( 89%) ,主要位于内核层、节细胞层的细胞及血管上。结论 :VEGF在 STZ大鼠视网膜中的表达与病程相关 ,而且 VEGF的产生存在着自分泌和旁分泌多种途径