替莫唑胺对神经胶质瘤TJ905细胞增殖特性和迁移能力的影响

目的探讨替莫唑胺(TMZ)对人胶质瘤TJ905细胞增殖和迁移能力的影响。方法培养TJ905细胞,分别应用不同浓度的TMZ(0、50、100、200、400μmol·L-1)干预TJ905细胞,干预不同时间(24、48、72 h)后收集细胞,应用Cell Counting Kit-8检测药物干预前后细胞增殖活性变化;细胞划痕实验检测400μmol·L-1TMZ对TJ905细胞迁移能力的影响。结果随着TMZ浓度的升高和培养时间的延长,TJ905细胞的密度降低,细胞出现皱缩,增殖受到明显抑制,并可见散在的细胞碎片;TJ905细胞存活率随着培养液中TMZ浓度的升高和培养时间的延长而降低(P<0.05);400μmol·L-1TMZ的培养液培养24、48和72 h后TJ905细胞迁移度均低于对照组(P<0.05)。结论 TMZ能有效抑制TJ905细胞增殖和迁移。     

三甲医院如何加强科研管理

目前,我国医疗体制处于改革的阶段,医院作为一个特殊的服务行业,必须不断适应社会的发展。科研管理在医院管理工作中占有十分重要的地位,科研成果是人类宝贵的财富,是推动医疗技术持续进步的必要资源,其推广和应用于社会,是科研任务的出发点和最终归宿。虽然各界医疗行业加强了对科研的投入,并且也随着医疗技术的进步得到较快发展,但是我国在科研管理方面仍然存在不足。文章结合某三甲医院科研现状,阐述了科研项目管理、高层次人才引进和培养、实验室及人才基地的建设和科研奖励的设置方面对策,为医院科研管理的健康发展提出建议。     

脑室穿刺引流联合脑脊液置换术治疗重型脑室出血的疗效评价

对90例重型脑室出血患者随机进行开颅清除血肿（A组），脑室穿刺引流（B组）和脑室穿刺引流联合脑脊液置换术治疗（C组），分析评价3种手术方法的疗效。结果：3组治疗后临床神经功能缺损程度评分较治疗前均有显著降低（P〈0．05）IB、C组的总有效率和基本痊愈率高于A组，脑脊液正常时间、住院天数较A组明显缩短，病死率低于A组（P〈0．05），而B、C组间无显著性差异（P〉0．05）IC组的基本痊愈率高于A、B组（P〈0．05）。认为脑室穿刺引流联合脑脊液置换术治疗重型脑室出血可以有效降低病死率，提高治愈率，是治疗重型脑室出血的有效方法。     

替莫唑胺对 Livin基因过表达的胶质瘤TJ905细胞及其干细胞增殖活性的影响

目的分析替莫唑胺（TMZ）干预Livin基因过表达的胶质瘤TJ905细胞及其干细胞模型后对细胞增殖活性的影响,以及对胶质瘤TJ905细胞和TJ905干细胞中Livin、Caspase-3/7的作用机制。 方法使用免疫磁珠方法从胶质瘤TJ905细胞系中分选出CD133阳性胶质瘤干细胞,采用慢病毒过表达技术建立Livin过表达的细胞模型,使用不同浓度（0、25、50、100、200、400 μmol/L）的TMZ干预细胞模型48 h,采用CCK-8、流式细胞术、反转录PCR检测药物干预后细胞增殖活性、细胞周期及Livin、Caspase-3/7基因的表达量。 结果（1）胶质瘤TJ905细胞中Livin基因表达量明显高于同源TJ905干细胞,差异有统计学意义（P<0.05）;（2）TMZ能抑制胶质瘤TJ905细胞及其干细胞的增殖活性,降低增殖速度,并且随药物浓度的增加抑制作用逐渐增强;（3）TMZ能抑制Livin基因的表达,诱导Caspase-3/7的表达,并且随药物浓度的增加抑制作用逐渐增强,差异有统计学意义（P<0.05）;（4）Livin基因转染后胶质瘤干细胞细胞周期G0/G1增加明显,而TJ905细胞周期则是G2/M期少量增加;TMZ干预细胞模型后,TJ905干细胞过表达组在S、G2/M停滞,对照组则是在S期停滞;TJ905细胞过表达组在S期停滞,对照组G2/M则是低浓度诱导停滞,随药物浓度增加其诱导作用减弱,差异均有统计学意义（P<0.05）。 结论TMZ可以通过抑制Livin基因的表达、诱导Caspase-3/7的表达、调控细胞周期变化来降低细胞增殖活性,促进细胞凋亡。     

自身免疫性脑脊髓炎模型大鼠侧脑室注射嗅鞘细胞对髓鞘修复及运动功能的影响

BACKGROUND： Olfactory ensheathing cell transplantation can activate axonal regeneration and enhance myelin repair, which are beneficial for treating demyelinating diseases. OBJECTIVE： To explore the effects of olfactory ensheathing cell transplantation on myelin repair, synaptophysin expression, and motor function in a rat model of experimental allergic encephalomyelitis. DESIGN, TIME AND SETTING： A randomized, controlled experiment was performed at the Laboratory of Provincial Hospital affiliated to Shandong University between August 2006 and September 2007. MATERIALS： Dibenzylamine （Hoechst 33342）, luxol fast blue, and rabbit anti-rat synaptophysin antibody were provided by Sigma, USA. METHODS： Olfactory ensheatbing cells extracted from neonatal Wistar rats were cultured for 10-14 days and labeled with dibenzylamine. Spinal cord extracted from a healthy guinea pig was homogenized and equally mixed with complete Freund＇s adjuvant; thereafter, the mixture was intracutaneously injected into two posterior voix pedis of healthy male Wistar rats to establish models of experimental allergic encephalomyelitis. Rats were randomly divided into a control encephalomyelitis group and an olfactory ensheathing cell transplantation group, 36 rats in each group. Physiological saline （2 μ L） or an olfactory ensheathing cell suspension （2 μ L） was separately injected along lateral cerebral ventricle at day 7 post-model induction. MAIN OUTCOME MEASURES： The migration and distribution of olfactory ensheathing cells were observed under fluorescence microscopy; myelin repair was detected using hematoxylin-eosin staining and luxol fast blue staining; synaptophysin expression was measured using immunohistochemical staining; motor function was evaluated using a motor function scale. RESULTS： Olfactory ensheatbing cells could survive in vivo and migrate to the distal end of the transplant focus and spinal cord, and survived 21 days. Hematoxylin-eosin staining and luxol fast blue staining indicated that myelin in the transplantation group was intact, and the inflammatory focus gradually disappeared. Transplantation increased synaptophysin expression （P 〈 0.05 versus control） and motor function （P 〈 0.05）. CONCLUSION： Olfactory ensheathing cell transplantation can promote myelin repair, increase synaptophysin protein expression, and ameliorate motor function in a rat model of experimental allergic encephalomyelitis.     

垂体腺瘤合并垂体脓肿及化脓性脑膜炎一例

患者男,59 岁,因"突发头痛、发热、呕吐、视物不清2 d"于2010 年7 月30 日入院.查体:T 39.5 ℃,神志清,瞳孔直径右3 mm、左2 mm,对光反射存在,双眼球外展、上视受限,复视并视物不清,颈抵抗,四肢肌力肌张力正常,Kernig 征阳性.     

2004-2009年宁夏人间布鲁杆菌病流行病学分析

目的 了解宁夏布鲁杆菌病(简称布病)的流行规律及趋势,为采取科学有效的防治措施提供依据.方法 2004-2009年,对宁夏银川市、石嘴山市、吴忠市、固原市和中卫市五地市网络报告的布病患者的资料进行整理和回顾分析,资料内容包括人口学特征、就诊情况及病史病程等方面信息,分析指标包括报告发病率;患者的性别、年龄、地区分布、城乡分布情况;转为慢性期率及其影响因素;病例报告单位的分布情况等.结果 2004-2009宁夏累计报告布病349例,无死亡病例,年报告发病率分别为0.017/10万、0.543/10万、0.151/10万、0.563/10万、1.771/10万、2.692/10万;男女比约为5.5∶1(295/54);≥30岁年龄组所占比例相对较高(27.5%,96/349);患者职业分布主要以农牧民为主(70.2%,245/349);在布病患者人数的地区分布中,吴忠市所占比例最高(61.9%,216/349),其次为银川市(22.9%,80/349);农村的布病患者所占比例(97.4%,340/349)高于城市(2.6%,9/349);患者转为慢性期的比例为11.2%(39/349),随着年龄的增长,布病转为慢性期的机会有减少的趋势(优势比为0.966);疾病预防控制中心报告病例占74.8%(261/349),医院报告的病例占25.2%(88/349).结论 宁夏人间布病发病率呈逐年快速上升趋势,发病主要以男性青壮年为主,转慢率较高,医院发现报告病例的能力较弱.应采取综合措施,加大经费投入、加强监测、不断提高医务人员诊断意识和水平,进一步加强对布病的预防控制.

Abstract：

Objective To learn the prevalence and trends of Brucella disease in Ningxia, in order to provide scientific basis for effective control of the disease. Methods Data of Brucella cases reported through city network from 2004 to 2009 in Yinchuan city, Shizuishan city, Wuzhong city, Guyuan city and Zhongwei city of Ningxia were reviewed and retrospectively analyzed. The data included demographic characteristics, treatment conditions and medical history so on related information. Analytical indicators include reported incidence;with patients' gender, age, regional distribution, urban and rural distribution;become chronic and associated factors;distribution of the cases reporting unit and so on. Results From 2004 to 2009, Ningxia had reported 349 cases of Brucellosis, no deaths, the annual incidence rates reported were 0.017/10 million, 0.543/10 million, 0.151/101 (295/54);The proportion of 34- to 40-year-old age group was higher than other age groups(27.5%, 96/349);Occupational distribution of patients was mainly farmers and herdsmen(70.2% ,245/349), in regional distribution of the patients, the highest percentage was Wuzhong city(61.9%,216/349), followed by Yinchuan city(22.9%,80/349);The proportion of patients in rural areas(97.4% ,340/349) was higher than urban(2.6% ,9/349);the proportion of patients converted to chronic was 11.2% (39/349). With age, the chance of patients converted to chronic was in a decreasing trend(odds ratio was 0.966);cases reported by Centre for Disease Control and Prevention accounted for 74.8%(261/349), by hospital accounted for 25.2%(88/349). Conclusions The reported incidence of Brucellosis in Ningxia is in a rapid upward trend year by year, the patients is mainly young men, the rate of converted to chronic is higher and the ability of hospital in founding and reporting of the cases is weaker.Comprehensive measures should be taken to increase funding, strengthen monitoring, and continuously improve the level of awareness and diagnosis of medical personnel for further strengthen the prevention and control of Brucellosis.     

胶质瘤TJ905细胞及其干细胞抗凋亡与MRP基因的关系

目的 从人脑胶质瘤细胞TJ905中分离、培养肿瘤干细胞,并探讨其生物学特性及其抗凋亡和耐药基因的表达差异.方法 TJ905细胞经免疫磁珠分离获取CD133+细胞,用无血清培养方法获得肿瘤干细胞球,用含有10%的胎牛血清培养基诱导分化,分化前后分别做兔抗人巢蛋白抗体(nestin)、鼠抗人微小管相关蛋白β(tubulin-β)、兔抗人胶质纤维酸性蛋白质(GFAP)、免疫细胞化学荧光染色,WST-8检测干细胞增殖活性,应用实时荧光定量RT-PCR技术检测Livin、Livinα、Livinβ、生存素和MRP1、MRF3的表达,并观察肿瘤干细胞形态学改变.结果 TJ905细胞中含有少量CD133+细胞,约为0.21%,这些细胞具有典型的干细胞特性,nestin染色为阳性;在无血清培养基中呈悬浮球样生长,能够自我更新和增殖,在有血清培养基中能够分化,tubulin-β、GFAP染色为阳性.TJ905干细胞球Livin、Livinα、Livinβ、生存素和MRP-1、MRP-3 mRNA表达量较TJ905单层培养细胞表达量都有不同程度的降低.结论 TJ905细胞中含有少量肿瘤干细胞,TJ905干细胞球抗凋亡和MRP基因表达量较TJ905单层培养细胞表达量都有不同程度的降低,提示肿瘤干细胞在肿瘤耐药机制中发挥的作用不尽相同,也不总是造成肿瘤耐药的惟一因素.