Foxo3a和p27kip1在大鼠坐骨神经损伤后背根神经节中的表达

Objective To investigate the expression of Foxo3a and p27kip1 in lumbar dorsal root ganglia (DRG) after injury of sciatic nerve in rats. Methods Adult rats were randomly divided into control group and experimental group. The rats in experimental group were subjected to sciatic nerve clamp.Expression and distribution of Foxo3a and p27kip1 and cellular proliferation and axon regeneration in DRG was detected by western blot and immunohistochemistry. Results Foxo3a protein levels begined to reduce at 1 day (7.0 ± 3.5), reached valley at 2 day (6.0 ± 3.8) after injury, and following Foxo3a downregulation, p27kip1 protein levels begined to decrease at 2 day (29.0 ± 3.5), reached valley at 7 day (21.0± 3.0) after injury. Down-regulation of Foxo3a and p27kip1 was expressed predominantly in neurons and glial cells by double immunolabelling. Foxo3a and p27kip1 were expressed in neurons [(37.8 ± 5.7)%, (43.3 ±4.3)%] and glial [(22.4 ± 3.9)%, (13.8 ± 3.2)%] cells in sections of DRG at 2 day after injury less than neurons [(73.6 ± 2.5)%, (84.1 ± 3.7)%] and glial [(61.3 ± 4.4)%, (68.7 ± 5.6)%] cells in sections of normal DRG. Proliferating cell nuclear antigen (PCNA) and GAP-43 were up-regulation from 2 day, and PCNA reached peak at 7 day after injury.The glial cells were the main type of cellular proliferation.Conclusion Down-regulation of Foxo3a and p27kip1 in lumbar DRG is correlated with the proliferation of glial cells and axonal regeneration after sciatic nerve injury.     

氨基胍对大鼠创伤性脑损伤的保护作用

目的探讨诱导型一氧化氮合酶（iNOS）抑制剂氨基胍（AG）对大鼠创伤性脑损伤（TBI）的神经保护作用。方法采用改进的Feeney法大鼠脑损伤模型,对生理盐水（NS）组和AG组SD大鼠于伤后6h分别腹腔注射NS或AG,每隔24h注射1次,连续注射3次。分别于致伤后24h、72h、168h取样,采用iNOS免疫组化技术,研究大鼠TBI后iNOS的表达及其细胞定位,采用凋亡细胞原位缺口末端标记法（TUNEL）,观察大鼠TBI后不同时点的神经细胞凋亡情况。结果大鼠TBI后24h,大脑损伤区周围皮质和伤侧海马iNOS阳性表达,TUNEL阳性细胞均明显增多,伤后72h表达最明显,伤后168h仍有表达;注射AG后,大脑损伤区周围皮质和伤侧海马的iNOS阳性细胞和TUNEL阳性细胞均明显减少（P〈0．01）。结论TBI后损伤区周围皮质和伤侧海马可出现iNOS阳性细胞高表达和神经细胞凋亡,且呈相关性变化,推测iNOS的过度表达可能参与了TBI后继发性神经细胞凋亡,使用AG能明显减少iNOS阳性细胞的表达和神经细胞的凋亡。     

基于C/S模式下大型综合性医院科研管理信息系统的开发

根据医院科研管理的特殊性,管理信息系统采用C/S模式开发,通过TCL/TK脚本语言和Sqlite数据库实现.运用网络技术、数据库技术等, 最大限度的实现自动化, 促进科研管理工作的科学化、网络化.     

适时引导投稿期刊的选择

对于医务人员投稿需要有适当、适时的引导,从如何抵御非法期刊的侵袭开始,引导对照论文内涵质量,利用检索工具,选择合适期刊,投稿同时也要注意到常规操作方面,坚持规范原则,做到有的放矢,提高稿件采用率.     

手术与非手术治疗急性肘关节尺侧副韧带损伤的组织学及生物力学研究

目的 探讨手术修复与不修复急性肘关节尺侧副韧带损伤后韧带愈合的组织学及生物力学特性。方法 新西兰白兔56只，随机分为两组，其中28只切断右肘尺侧副韧带后随即缝合，为缝合组；另28只切断尺侧副韧带后不缝合，为不缝合组。分别于术后3、6、9、12周四个阶段取材，进行组织学观察及生物力学检测。结果12周时缝合组和不缝合组的韧带断端间均被平行的胶原纤维桥接，并与原韧带纤维相连，但前者翻转交错明显，纤维间隙较后者小。除术后3周外各时间点检测韧带缝合组位移均明显小于切断不缝合组，差异有统计学意义（P〈0．05），而最大负荷及功耗则明显高于韧带不缝合组，差异有统计学意义（P〈0．05）。结论 肘关节尺侧副韧带损伤后手术和非手术修复韧带均能愈合，但手术修复后的韧带愈合质量明显比未修复高。     

Foxo3a和p27kip1在大鼠坐骨神经损伤后背根神经节中的表达

Objective To investigate the expression of Foxo3a and p27kip1 in lumbar dorsal root ganglia (DRG) after injury of sciatic nerve in rats. Methods Adult rats were randomly divided into control group and experimental group. The rats in experimental group were subjected to sciatic nerve clamp.Expression and distribution of Foxo3a and p27kip1 and cellular proliferation and axon regeneration in DRG was detected by western blot and immunohistochemistry. Results Foxo3a protein levels begined to reduce at 1 day (7.0 ± 3.5), reached valley at 2 day (6.0 ± 3.8) after injury, and following Foxo3a downregulation, p27kip1 protein levels begined to decrease at 2 day (29.0 ± 3.5), reached valley at 7 day (21.0± 3.0) after injury. Down-regulation of Foxo3a and p27kip1 was expressed predominantly in neurons and glial cells by double immunolabelling. Foxo3a and p27kip1 were expressed in neurons [(37.8 ± 5.7)%, (43.3 ±4.3)%] and glial [(22.4 ± 3.9)%, (13.8 ± 3.2)%] cells in sections of DRG at 2 day after injury less than neurons [(73.6 ± 2.5)%, (84.1 ± 3.7)%] and glial [(61.3 ± 4.4)%, (68.7 ± 5.6)%] cells in sections of normal DRG. Proliferating cell nuclear antigen (PCNA) and GAP-43 were up-regulation from 2 day, and PCNA reached peak at 7 day after injury.The glial cells were the main type of cellular proliferation.Conclusion Down-regulation of Foxo3a and p27kip1 in lumbar DRG is correlated with the proliferation of glial cells and axonal regeneration after sciatic nerve injury.     

南通大学附属医院科研管理制度概述

科研管理制度在科研工作中起着举足轻重的作用。南通大学附属医院确定了科研计划管理办法、科技成果管理办法、科研经费管理办法及重点医学专科管理办法、使管理工作有章可循。     

Foxo3a和p27kip1在大鼠坐骨神经损伤后背根神经节中的表达

目的 探讨坐骨神经夹伤后Foxo3a和p27kip1在腰段背根神经节(DRG)中表达变化及其意义.方法 将成年SD大鼠随机分为正常对照组和实验组.对实验组实行坐骨神经夹伤术.运用蛋白质印迹、免疫荧光双标,研究大鼠坐骨神经夹伤后,腰段DRG中Foxo3a和p27kip1的表达、分布以及细胞增殖和轴突再生情况.结果 Foxo3a在坐骨神经夹伤后1 d表达值(7.0±3.5)开始明显下降,2 d表达值(6.0±3.8)达到最低值,随之逐渐升高,p27kip1在坐骨神经夹伤后2 d表达值(29.0±3.5)表达开始明显下降,7 d表达值(21.0±3.0)达到最低值,随之逐渐升高;Foxo3a和p27kip1分布于神经元和神经胶质细胞内且在坐骨神经夹伤后2d DRG中,Foxo3a和p27kip1在神经元细胞[(37.8±5.7)%、(43.3±4.3)%]和神经胶质细胞[(22.4±3.9)%、(13.8±3.2)%]中表达较在正常组神经元细胞[(73.6±2.5)%、(84.1±3.7)%]和神经胶质细胞[(61.3±4.4)%、(68.7±5.6)%]减少;细胞核增殖抗原(proliferating cell nuclear antigen,PCNA)和神经元生长相关蛋白(GAP-43)在坐骨神经夹伤后2 d DRG中表达值[12±2.6,15±1.9]均开始上调,PCNA在7 d表达值(25.0±3.2)达到最高点,GAP-43则保持较高水平;此外,PCNA与神经胶质细胞共定位明显,与神经元细胞几乎无共定位.结论 大鼠坐骨神经损伤后,Foxo3a和p27kip1在腰段DRG中的表达减少与神经胶质细胞增殖和轴突再生密切相关.     

Foxo3a在大鼠坐骨神经损伤后背根神经节中的表达

目的 探讨大鼠坐骨神经夹伤后Foxo3a在腰段背根神经节(dorsal root ganglia,DRG)中的表达变化及其意义.方法 将42只成年SD大鼠完全随机分为正常对照组和实验组.对实验组行坐骨神经夹伤术.运用Western blot及免疫荧光染色,观察大鼠坐骨神经夹伤对腰段DRG中Foxo3a表达的影响及其与生长相关蛋白的表达变化.结果 Western blot结果表明,坐骨神经夹伤后1 d,腰段DRG中Foxo3a蛋白表达开始明显下降,第2天达到最低值,随之逐渐升高,于4周后接近正常水平.坐骨神经夹伤后2 d细胞核增殖抗原(proliferating cell nuclear antigen,PCNA)和神经元生长相关蛋白(GAP-43)在DRG中的表达均开始上调,在7 d达到最高点,GAP-43则保持较高水平.免疫荧光染色结果表明,Foxo3a表达下降主要存在于神经元和神经胶质细胞内,并且PCNA与神经元细胞几乎无共定位,与神经胶质细胞共定位明显.结论 大鼠坐骨神经损伤后,Foxo3a在腰段DRG中的表达减少可能与神经胶质细胞增殖和轴突再生密切相关.     

某大学附属医院2004-2009年科技论文发表统计分析

筛选医院2004 -2009年度发表论文,运用文献计量学方法,从年代、作者、项目资助情况予以分类统计,分析揭示其内在规律性、连续性,为医院管理部门制定相应的规章措施、及时完善激励机制、绩效考核、统筹规划提供量化指标.