探索医院融合党建,发挥党建示范引领

作为医院的党务工作者,探索融合党建,是摆在我们面前的新课题。本文从党建工作现状分析、加强融合党建、发挥党建示范引领作用上阐述新时期融合党建工作。     

高血压对骨折患者微循环及骨折愈合的影响

目的：分析高血压对股骨转子间骨折患者微循环状态及骨折愈合时间的影响。方法：选取重庆市渝北区人民医院住院的175例老年单侧股骨转子间骨折患者为研究对象,根据其血压情况分为高血压组(n=85)和对照组(n=90),比较两组患者手术治疗后红细胞聚集程度、血液流变学、骨折愈合时间、延迟愈合及不愈合发生率等指标是否有差异。结果：(1)两组年龄、性别、术前微型营养评估简表(MNA-SF)营养风险评分、血红蛋白、骨密度值以及手术失血量比较,差异均无统计学意义(P>0.05);(2)高血压组红细胞轻度聚集程度及血液流变学指标均高于对照组,且差异有统计学意义(P<0.05);(3)高血压组骨折完全愈合平均时间长于对照组,差异具有统计学意义(P<0.05)。高血压组延迟愈合发生率高于对照组,且差异有统计学意义(P<0.05)。结论：高血压会导致老年骨折患者的微循环紊乱,是延长患者骨折愈合时间和影响骨折愈合的重要因素之一。     

^18F-FECNT的生物分布特性及小动物PET显像研究

目的探讨多巴胺转运蛋白（DAT）显像剂^18F-N-（2-氟乙基）-2β-甲酯基-3β-（4-氯苯基）去甲基托烷（FECNT）的体内生物分布特性,并进行小动物PET显像研究,以评价其临床应用潜力。方法自制^18F-FECNT注射液,进行正常小鼠脑内分布、DAT阻断实验、正常和单侧帕金森病（PD）模型大鼠小动物PET脑显像。结果正常ICR小鼠在给药后5,15,30,60,120,180min的进脑量分别达2．22,1．20,1．02,0．78,0．71,0．67百分注射剂量率（％ID）。给药后5～60min内,药物在纹状体（ST）部位浓聚,纹状体／小脑（ST／CB）比值在5,15,30,60min时分别为2．56,3．47,2．78,1．63。120min后ST的放射性浓度下降至与其他脑组织相近。脑内DAT经β-CFF阻断的小鼠,其ST未见放射性浓聚。正常大鼠小动物PFT显像图中ST显影清晰（ST／CB=2．18±0．16,n=3）,双侧对称;PD模型大鼠未损毁侧ST放射性浓聚（ST未损毁侧／CB=2．01±0．23,n=3）,而损毁侧ST放射性摄取不明显,与小脑相当（ST损毁侧／CB=1．04±0．05）。结论^18F-FECNT能透过无损的血脑屏障浓聚于ST,对DAT具有高亲和性与特异性,是一种有临床应用潜力的DAT显像剂。     

微创穴位埋线治疗脑血管病后遗症120例疗效观察

<正>2008-02—2010-03,我们采用微创穴位埋线法治疗脑血管病后遗症120例,结果如下。1资料与方法 1.1一般资料本组120例均系本院神经内科、神经外科确诊为脑梗死、脑出血患者,经住院治疗神志清楚,均     

7.0T MRI及Micro-PET无创检测小鼠动脉粥样硬化

目的 探讨7.0T小动物MRI及Micro-PET检测动脉粥样硬化的可行性.方法 取10只46周龄ApoE-/-小鼠建立老年ApoE-/-小鼠动脉粥样硬化模型,取5只模型于鼠尾静脉注射超顺磁性氧化铁(SPIO)前、后12 h、24 h、36 h 行MR扫描(应用7.0TMR仪);另5只模型于鼠尾静脉注射18F-氟脱氧葡萄糖(~(18)F-FDG)1 h、2 h、3 h后行Micro-PET显像;取腹主动脉行病理检查.结果 老年ApoE-/-小鼠高脂喂养6个月后,7.0T MRI证实动脉粥样硬化斑块形成;鼠尾静脉注射SPIO后36 h发现鼠腹主动脉及两侧髂动脉血管壁T2W像上环形高信号较未注射SPIO前变薄,血管腔较前增宽.鼠尾静脉注射~(18)F-FDG行Micro-PET检测,发现在3 h左右腹主动脉及两侧髂动脉区域有放射性浓聚.病理示腹主动脉壁内有动脉粥样硬化斑块形成及巨噬细胞的聚集.结论 7.0T MRI及Micro-PET可成功检测巨噬细胞丰富的动脉粥样硬化斑块,有助于判断斑块的易损性,为早期发现、诊断及治疗动脉粥样硬化提供理论依据.     

18F-FECNT的生物分布特性及小动物PET显像研究

Objective 2β-carbomethoxy-3β-(4-corophenyl)-8-(2-18F-fluoroethyl) nortropane (18F-FECNT) is a recently developed dopamine transporter (DAT) imaging agent. The aim of this study was to evaluate its brain biedistribution and to assess its usefulness in quantitation of DAT density in normal and hemiparkinsonian rats. Methods Six groups of mice (5 mice each group) received 18F-FECNT were sacri-ficed at indicated time post injection. Different brain regions (cortex, hippocampus, striatum, cerebellum) were removed, weighed, and countered. DAT blocking effect was investigated in mice pretreated with 2β-Carbomethoxy-3β-(4-fluorpbenyl)tropane (β-CFT) at before 18F-FECNT injection. MicroPET scans were performed in beth normal and unilaterally 6-hydroxydopamine-lesioned rats. Results The brain uptake of 18F-FECNT was 2.22, 1.20, 1.02, 0.78, 0.71, and 0.67 percent injection dose (%ID) at 5, 15, 30, 60, 120, and 180 min post injection. Radioactivity concentration of the striatum, the target region, was the highest in the brain regions and decreased quickly from 5 to 60 min and reached to background at 120 min of post injection. The striatum/cerebellum ratio was 2.56, 3.47, 2.78, 1.63, 0.97, and 0.88 at 5, 15, 30, 60, 120, and 180 min, respectively, post injection. The selective striatum uptake of 18F-FECNT decreased dramatically to the background when the DAT was blocked with β-CFT. The striatum of normal rats in micro-PET exhibited symmetrical (left/right = 1.00±0.05) and the highest uptake of radioactivity (striatum/cere-helium =2.18±0. 16 at 5- 125 min, n =3). As for the hemiparkinsonian rats, nonsymmetrical [unlesioned striatum/cerebellum vs lesioned striatum/cerebellum = 2.01 ± 0.23 (n = 3) vs 1.04 ± 0. 05] and the high-est uptake of radioactivity were also noted. Conclusions The results suggest that 18F-FECNT rapidly pas-ses through blood-brain barrier and locates in stiatal region with high affinity and selectivity to DAT. It is a potential radiotracer to assess the in vivo DAT density in Parkinson's disease.     

海鞘来源放线菌Streptomyces pratensis SCSIO LCY05中Anthracimycin类化合物及其抗菌活性研究

目的 研究来源于海鞘的放线菌Streptomyces pratensis SCSIO LCY05产生的抑菌活性物质。 方法 采用硅胶柱色谱、中压制备色谱、半制备HPLC等方法对其发酵产物分离纯化,经HR-ESI-MS、NMR以及X-ray单晶衍射等方法确定化合物的结构;采用微量二倍稀释法对化合物进行抗菌活性评价。 结果 从发酵产物中分离鉴定了3个化合物：anthracimycin C(1)、anthracimycin(2)和anthracimycin B(3),结构得到X-ray单晶衍射的确证,其中化合物1为新化合物。经抗菌活性测定,化合物2和3对6株革兰氏阳性菌具有显著的抑制活性,最小抑菌浓度(MIC)值在0.0675-0.25 μg/mL之间,并首次发现化合物2和3对藤黄微球菌和模仿葡萄球菌生长抑制活性良好。 结论 海洋共附生微生物是天然活性物质的重要来源,从海鞘来源的S. pratensis SCSIO LCY05中分离获得具有抗菌活性的anthracimycin类化合物可作为良好的抗菌药物先导化合物。     

纤维连接蛋白亚型胞外结构域特异性探针18F－AlF－NOTA－PEG4－ZD2的制备及microPET显像

目的制备针对纤维连接蛋白亚型胞外结构域B(EDB-FN)的特异性分子探针18F-AlF-1, 4, 7-三氮杂环壬烷-1, 4, 7-三乙酸-(聚乙二醇)4-ZD2(18F-AlF-NOTA-PEG4-ZD2), 并进行体内外理化性质评价。方法通过Al18F一步螯合标记的方法制备18F-AlF-NOTA-PEG4-ZD2, 通过高效液相色谱(HPLC)测定其放化纯和体外稳定性, 测定脂水分配系数(logP), 并行细胞摄取实验[将三阴性乳腺癌MDA-MB-231细胞(1×106/管)分为3组(各3管), 分别为阳性组、抑制组和控制对照组]。取MDA-MB-231荷瘤裸鼠(n=3;实验组)行18F-AlF-NOTA-PEG4-ZD2 microPET显像(30、60、90和120 min), 并与阻断组(n=3;注射NOTA-PEG4-ZD2后0.5 h再注射18F-AlF-NOTA-PEG4-ZD2)进行对照。采用两独立样本t检验分析数据。结果成功制备18F-AlF-NOTA-PEG4-ZD2, 优化后的放化产率为(33.8±2.1)%(未行衰变校正, n=8), 放化纯>96%...     

18F-FECNT的生物分布特性及小动物PET显像研究

Objective 2β-carbomethoxy-3β-(4-corophenyl)-8-(2-18F-fluoroethyl) nortropane (18F-FECNT) is a recently developed dopamine transporter (DAT) imaging agent. The aim of this study was to evaluate its brain biedistribution and to assess its usefulness in quantitation of DAT density in normal and hemiparkinsonian rats. Methods Six groups of mice (5 mice each group) received 18F-FECNT were sacri-ficed at indicated time post injection. Different brain regions (cortex, hippocampus, striatum, cerebellum) were removed, weighed, and countered. DAT blocking effect was investigated in mice pretreated with 2β-Carbomethoxy-3β-(4-fluorpbenyl)tropane (β-CFT) at before 18F-FECNT injection. MicroPET scans were performed in beth normal and unilaterally 6-hydroxydopamine-lesioned rats. Results The brain uptake of 18F-FECNT was 2.22, 1.20, 1.02, 0.78, 0.71, and 0.67 percent injection dose (%ID) at 5, 15, 30, 60, 120, and 180 min post injection. Radioactivity concentration of the striatum, the target region, was the highest in the brain regions and decreased quickly from 5 to 60 min and reached to background at 120 min of post injection. The striatum/cerebellum ratio was 2.56, 3.47, 2.78, 1.63, 0.97, and 0.88 at 5, 15, 30, 60, 120, and 180 min, respectively, post injection. The selective striatum uptake of 18F-FECNT decreased dramatically to the background when the DAT was blocked with β-CFT. The striatum of normal rats in micro-PET exhibited symmetrical (left/right = 1.00±0.05) and the highest uptake of radioactivity (striatum/cere-helium =2.18±0. 16 at 5- 125 min, n =3). As for the hemiparkinsonian rats, nonsymmetrical [unlesioned striatum/cerebellum vs lesioned striatum/cerebellum = 2.01 ± 0.23 (n = 3) vs 1.04 ± 0. 05] and the high-est uptake of radioactivity were also noted. Conclusions The results suggest that 18F-FECNT rapidly pas-ses through blood-brain barrier and locates in stiatal region with high affinity and selectivity to DAT. It is a potential radiotracer to assess the in vivo DAT density in Parkinson's disease.     

促红细胞生长素对充血性心衰患者心功能的影响

目的探讨充血性心衰(CHF)并贫血的患者,在EPO加铁剂治疗后,对心脏结构与功能及B型利钠肽水平的影响。方法32例连续CHF并贫血(80g/L<血红蛋白<120g/L)的患者纳入本研究。以随机方法分为治疗组(A组、16例),皮下注射EPO12000IU/周+每天口服铁剂共4个月。对照组(B组、16例),每天口服铁剂。结果A组患者在随机治疗的4个月中,相对于基础状态血红蛋白增加(P<0.001),左室内径缩小(P<0.001),射血分数增加(P<0.05),心功能分级(P<0.001)与6min步行试验(P<0.05)改善,同时血浆中B型利钠肽水平(P<0.01)下降。B组患者在试验期间射血分数(P<0.05)及6min步行距离(P<0.05)有所下降,其他指标无明显变化。结论CHF并贫血患者,EPO加口服铁剂治疗,能改善患者的心脏结构与功能,降低B型利钠肽水平。