CD305分子在类风湿关节炎滑膜成纤维细胞中的表达

目的：研究CD305分子在类风湿关节炎滑膜中的表达。方法：通过免疫组织化学染色方法分别检测CD305分子在类风湿关节炎（Rheumatoid arthritis,RA）、骨性关节炎（Osteoarthritis,OA）和正常创伤患者滑膜中的分布规律。结果：在RA组,CD305分子在所有患者滑膜组织中均有表达。在OA组,CD305分子在部分患者滑膜组织中表达。而在正常患者中,CD305分子在大部分滑膜组织中不表达,仅在部分样本边缘处有少量表达。结论：CD305分子在RA患者滑膜组织中表达高于正常创伤患者,且主要在里衬层（lining layer）滑膜成纤维细胞(fibroblast-like synoviocytes, FLS) 上高表达。     

类风湿关节炎活动期患者血清血小板活化因子含量测定及临床意义

目的探讨血小板活化因子(PAF)在类风湿关节炎(RA)活动期中的水平变化及临床意义。方法采用酶联免疫吸附方法检测43例活动期RA患者血清PAF含量,并与30例健康人血清PAF含量进行比较。结果RA活动期组血清PAF含量(116.02±20.15)明显高于健康对照组(44.27±18.98),差异具有非常显著性意义(t=15.325 6,P<0.001)。结论活动期RA患者血清PAF水平明显升高,可作为反映RA患者风湿活动的评估指标之一。     

Evolving concepts of rheumatoid arthritis

Rheumatoid arthritis is the most common inflammatory arthritis and is a major cause of disability. It existed in early Native American populations several thousand years ago but might not have appeared in Europe until the 17th century. Early theories on the pathogenesis of rheumatoid arthritis focused on autoantibodies and immune complexes. T-cell-mediated antigen-specific responses, T-cell-independent cytokine networks, and aggressive tumour-like behaviour of rheumatoid synovium have also been implicated. More recently, the contribution of autoantibodies has returned to the forefront. Based on the pathogenic mechanisms, specific therapeutic interventions can be designed to suppress synovial inflammation and joint destruction in rheumatoid arthritis.     

Two calcium-binding proteins in infiltrate macrophages of rheumatoid arthritis

The aetiology and cellular mechanism of chronic inflammatory processes are poorly understood. Macrophages act prominently in the inflammatory response and we report here that they express two calcium-binding proteins. The expression of these proteins, referred to as MRP-8 and MRP-14, is specific for cells of myeloid origin, namely granulocytes, monocytes and macrophages, and is observed in blood granulocytes and monocytes but not in normal tissue macrophages. In acutely inflamed tissues, macrophages can express MRP-14 but not MRP-8, and in chronic inflammations, such as primary chronic polyarthritis, infiltrate macrophages express both MRP-8 and MRP-14. Characterization of MRP-8 and MRP-14 could therefore be useful to the understanding of cellular processes induced in chronic inflammation.     

基于移动代理的主动网络安全研究

对基于移动代理的主动网络进行了研究,移动代理作为一种能够在异构网络中主机间自主地进行迁移的代码机制,可用来实现主动网络、设计了一个通用的基于移动代理的主动网络安全框架,其符合主动网络安全工作组提出的主动网络的安全规范,能有效地保护主动结点的资源。     

类风湿关节炎灭活滑膜液单个核细胞对非灭活滑膜液单个核细胞分泌IL-10水平的影响

目的观察类风湿关节炎灭活滑膜液单个核细胞对非灭活滑膜液单个核细胞分泌IL-10水平的影响。方法抽取类风湿关节炎(RA)患者关节液,分离关节液单个核细胞,分为对照组:2×10~6的非灭活单个核细胞,培养条件为37℃,5%CO_2孵育箱培养48h;实验组:细胞数为2×10~6个非灭活单个核细胞与甲醛灭活后的单个核细胞按1:10混合培养.用ELISA法测定培养上清中IL-10的水平.结果实验组较对照组IL-10水平明显升高(P<0.01).结论灭活滑膜液单个核细胞对非灭活滑膜液单个核细胞IL-10分泌有促进作用,提示未经克隆选择的RA滑膜液混合细胞可能具有诱导分泌IL-10CD_4调节性T细胞的生成作用.     

Expression of active human factor VIII from recombinant DNA clones

DNA clones encoding the complete 2,351 amino acid sequence for human factor VIII have been isolated and used to produce biologically active factor VIII in cultured mammalian cells. The recombinant protein corrects the clotting time of plasma from haemophiliacs and has many of the biochemical and immunological characteristics of serum-derived factor VIII.     

类风湿关节炎全球药物研发状况分析

 类风湿关节炎（RA）是一种自身免疫性疾病,全球患病率约0.24%。RA发病机制复杂,致残率极高,严重影响患者的生活质量,给社会带来沉重的经济负担,对RA的有效治疗成为全球医药行业关注的重点。据艾美仕数据统计,2015年全球医药市场用于治疗RA的药物支出达214亿美元。本报告依据相关文献及Thomson Reuters、IMS Health等数据库信息,对RA全球药物研发市场、治疗药物类别、靶标、专利等药物研发状况进行分析。目前,RA治疗药物类别包括抗炎药、抗风湿药、激素类药物、生物制剂、联合用药、免疫重建等;治疗靶标有肿瘤坏死因子α、环氧化酶类、B-淋巴细胞抗原、白细胞介素类、细胞核转录因子kB、小分子激酶等;近些年,生物技术药物在RA等自身免疫性疾病治疗领域取得了前所未有的成功,未来市场小分子药物及生物仿制药也将会发挥关键作用。     

Isolation of CD4- CD8- mycobacteria-reactive T lymphocyte clones from rheumatoid arthritis synovial fluid

The majority of peripheral T cells express a heterodimeric, alpha/beta T-cell receptor, which recognizes specific antigenic peptides bound to self major histocompatibility complex (MHC) molecules, and either the CD4 or CD8 surface markers. An additional subset of T cells, whose physiological function is unknown, express a distinct CD3-associated receptor composed of gamma and delta chains. This subset includes cells lacking both CD4 and CD8 surface markers, which may be involved in autoimmunity. The recognition specificity of the gamma/delta receptors is not well characterized and has been defined in only one case to date, a murine cell line which shows MHC-linked specificity. In this report, we describe the isolation of CD4- CD8-, gamma/delta TCR bearing T cell clones from the synovial fluid of a rheumatoid arthritis patient. These T cell clones respond specifically to mycobacterial antigens without MHC restriction.     

类风湿关节炎并发心血管系统损害43例临床分析

对43例类风湿关节炎急性活动期进行系统检查，发现并发心血病变较为常见，并可引起严重后果。心包积液、二尖瓣狭窄各占35.3%、心律失常55.8%。心脏传导阻滞20.9%、冠状动脉炎9.3%、左心室血栓5.9%。揭示在诊治类风湿关节炎同时应重视心血管系统病变的时期诊断和治疗，对改善预后具有重要意义。     

ACCPA,RF及Ig对类风湿性关节炎诊断价值的探讨

目的研究抗环瓜氨酸抗体(anti-cyclic citrullinated peptide antibodies,ACCPA)、类风湿因子(RF)及免疫球蛋白(Ig)对类风湿性关节炎(Rheumatoid Arthritis,RA)的诊断价值,为临床应用提供参考。方法以RA患者作为病例组,健康体检人群为对照组,对两组血浆中ACCPA,RF及Ig水平进行检测,分析判断每种指标对于RA诊断的敏感性和特异性,对其测定结果用SPSS19.0软件进行统计学分析。结果在3种诊断指标中RF的敏感性为81.25%,特异性为77.08%;Ig敏感性为85.42%,特异性为47.92%;ACCPA敏感性为66.67%,特异性为93.75%;但是,三者联合对于RA诊断的敏感性和特异性分别为98.85%和73.9%。结论 ACCPA,RF及Ig三种指标联合用于RA诊断,不仅有较高的敏感性和特异性,而且也可以根据ACCPA来判断RA患者的严重程度,在临床应用中有良好的推广价值。     

核因子-κB与类风湿关节炎关系研究进展

概述了核因子-κB的生物学特性、核因子-κB的活化与在类风湿关节炎发病中的关系,以及目前临床治疗类风湿关节炎的药物,包括非甾体类抗炎药、糖皮质激素、慢作用抗风湿药、中药等调控核因子-κB活性的研究现状,为深入探讨类风湿关节炎的发病机制,研发新的抗类风湿关节炎药物提供研究依据.     

一种新型二氧化氯活化剂的研究

为了寻找新型的二氧化氯活化剂,对一种在接近中性条件下进行活化的无机物MY进行了研究,确定了其最佳活化配比,同时对影响其活化的主要因素-温度、浓度等进行了初步探索.     

Research on an active and continuous monitoring system for human respiratory system

Continuous and dynamic measurements of human respiratory parameters are very important for vital diseases of respiratory system during mechanical ventilation. This paper analyzed the structure and mechanical properties of the human respiratory system, and designed an active intervening monitoring micro system for it. The mobile mechanism of the micro system is soft and earthworm-like movement actuated by pneumatic rubber actuator, the measurement and therapy unit of the system is an extensible mechanism with sensors in the front. The micro monitoring system can move in respiratory tract and measure the respiratory parameters in bronchium continuously. Experiments had been done in swine＇s respiratory tract, the results proved that the micro robot system could measure the respiratory parameters in real-time successfully and its movement was smith in swine＇s respiratory tract.     

Expression of biologically active human clotting factor IX (hF IX) in the mammary gland of transgenic mice

The DNA of human factor IX (hF IX) gene vector pMC IX m, which had been proven to be able to express inin vitro and living cells, was introduced into 586 zygotes of Kunming Whlte Mice by positive pressure microinjection technique with manual operation. The 499 survival embryos after microinjection were then transferred into pseudopregnant recipient mice and 216 F, pups were born. The analysis of PCR and Southern blot hybridization showed that, of the 216, 6 (2 females and 4 males) were integrated with foreign DNA in their genornes, giving an integration frequency of 3% (6/216). Two F₀ female transgenic mice could express hF IX protein in their milk and the content was over 100 ng/mL as measured with ELISA. The biological activities of hF IV in the milk of two F₀ mike were 44.67 % and 79.43 %, respectively.     

Expression of active human clotting factor IX from recombinant DNA clones in mammalian cells

Haemophilia B, or Christmas disease, is an inherited X-chromosome-linked bleeding disorder caused by a defect in clotting factor IX and occurs in about 1 in 30,000 males in the United Kingdom. Injection of factor IX concentrate obtained from blood donors allows most patients to be successfully managed. However, because of impurities in the factor IX concentrate presently in use, this treatment involves some risk of infection by blood-borne viruses such as non-A, non-B hepatitis and the virus causing acquired immune deficiency syndrome (AIDS). Because of the recent concern about the increasing incidence of AIDS amongst haemophiliacs, a factor IX preparation derived from a source other than blood is desirable. Here, we report that after introduction of human factor IX DNA clones into a rat hepatoma cell line using recombinant DNA methods, we were able to isolate small amounts of biologically active human factor IX.