外周血中BAFF、BAFF-R及Bcl-xL的表达与B细胞非霍奇金淋巴瘤疾病进展的相关性研究

目的研究B细胞性非霍奇金淋巴瘤(B-NHL)患者外周血B cell-activating factor(BAFF)、其受体BAFF-R及Bcl-xL基因的表达,探讨其与B-NHL疾病进展的相关性。方法应用实时荧光定量PCR法检测36例B-NHL患者外周血单个核细胞(PBMC)BAFF、BAFF-R、Bcl-xL mRNAs的相对表达水平,以7例健康献血员作为对照,并据性别、淋巴瘤国际预后指数(IPI)、年龄、临床分期、是否耐药进行分组比较。结果 B-NHL患者PBMC BAFF、BAFF-R及Bcl-xL的mRNAs表达较正常对照组显著升高(P<0.05),Ⅲ/Ⅳ期高于Ⅰ/Ⅱ期,耐药B-NHL组高于非耐药组(P<0.05)。结论外周血单个核细胞BAFF、BAFF-R、Bcl-xL mRNAs的表达水平与B-NHL临床分期有关,在耐药B-NHL外周血中明显升高,提示BAFF/BAFF-R介导的信号通路可能参与B-NHL的临床进展及耐药机制。     

Expression of Recombination Activating Genes in Germinal Center B Cells: Involvement of Interleukin 7 (IL-7) and the IL-7 Receptor

Mouse germinal center (GC) B cells have been shown to undergo secondary V(D)J (V, variable; D, diversity; J, joining) recombination (receptor editing) mediated by the reexpressed products of recombination activating gene (RAG)-1 and RAG-2. We show here that interleukin (IL)-7 as well as IL-4 was effective in inducing functional RAG products in mouse IgD⁺ B cells activated via CD40 in vitro. Blocking of the IL-7 receptor (IL-7R) by injecting an anti– IL-7R monoclonal antibody resulted in a marked suppression of the reexpression of RAG-2 and subsequent V(D)J recombination in the draining lymph node of immunized mice, whereas RAG-2 expression was not impaired in immunized IL-4–deficient mice. Further, these peripheral B cells activated in vitro or in vivo were found to express IL-7R. These findings indicate a novel role for IL-7 and IL-7R in inducing receptor editing in GC B cells.     

浅谈从肝论治冠心病

冠心病属于中医"胸痹""心痛"的范畴,气机不畅是主要病机。肝与心在情志、五行、经络上相关联。现代医学认为抑郁和焦虑是冠心病的心理社会危险因素。因此,冠心病的治疗常从肝论治。     

贺菊乔教授运用脉管通汤治疗下肢血管疾病验案举隅

贺菊乔,湖南中医药大学第一附属医院主任医师,教授,博士研究生导师,湖南省名中医,第五批全国老中医药专家学术经验继承工作指导老师。擅长各种外科疾病的诊治,衷中参西,学验俱丰,在周围血管病的诊治方面也有较深研究和造诣,疗效卓著。笔者作为贺菊乔名老中医药专家传承工作室课题组负责人跟师侍诊,学有所获,本文就贺菊乔教授运用自拟方脉管通汤治疗下肢血管疾病的经验介绍如下。1血栓性深静脉炎案     

Cdc42: Role in Cancer Management

Contribution of Cdc42, a member of Rho family, has been characterized for the beginning of variety of cellular responses including cellular transformation, cell division, cell invasion, migration, invadopodia formation, enzyme activity, filopodia formation, and cell polarity in cells. Deregulation of Cdc42 can alter the normal functioning of the cells, responsible for the initiation of signaling pathways and is correlated with several pathogenic processes such as cancer. Therefore, maintaining the level of Cdc42 and its effectors in cells, tumor progression can be controlled. Therefore, it can be suggested that deeper understanding about the Cdc42 contribution in cancer cell progression at molecular level can approach to the development of Cdc42 inhibitors in cancer management.     

Assessment of intracellular cytokines and regulatory cells in patients with autoimmune diseases and primary immunodeficiencies — Novel tool for diagnostics and patient follow-up

Serum and intracytoplasmic cytokines are mandatory in host defense against microbes, but also play a pivotal role in the pathogenesis of autoimmune diseases by initiating and perpetuating various cellular and humoral autoimmune processes.     

益气活血法在缺血性中风后神经修复中的生物学基础研究进展

中风是全球死亡和残疾的主要原因，开发增强中风后恢复和增强神经修复的方法至关重要。中风后的恢复涉及复杂的相互关联的神经修复系统。神经修复整个过程需要神经元胞体对伤害性刺激作出应答，通过神经干细胞增殖与迁移、轴浆运输信号分子、细胞骨架结构构建以及轴突末端生长锥形成等一系列协调的相互作用，才能实现再生生长。神经功能重塑作为神经功能缺损治疗潜在的新靶点，无论是神经功能重塑的具体机制，还是神经功能缺损临床治疗方案，均具有重要研究意义。脑损伤后，由于其内在修复机制十分复杂，单一的治疗措施时常难以奏效，综合治疗将是提高脑内再修复功能的发展方向。益气活血法具有神经保护、血管再生、神经发生及环路重建等多方面生物效应，可共同促进损伤后的神经功能重塑；其作用机制与细胞自噬、免疫调节及微小RNA调控密切相关，充分体现了益气活血法的多途径、多靶点、整体调节的治疗特点以及对中风后的神经修复发挥重要的治疗作用。因此，进行益气活血法对中风后脑功能康复的研究具有十分重要的理论和指导意义。     

益气活血法干预肾纤维化机制的研究进展＊

肾纤维化是各种慢性肾脏病常见的病理基础，其以炎性细胞的浸润、成纤维细胞的增殖、细胞外基质沉积为特征。中医认为气虚血瘀是肾纤维化的基本病机，运用益气活血法抗肾纤维化的机制研究取得进展，故文章从调节细胞因子的表达、减少细胞外基质的沉积、抑制上皮间充质转化、减轻炎症反应、抗氧化应激反应方面进行阐述益气活血法干预肾纤维化的作用机制，以期为今后中医药防治肾纤维化提供依据。     

弥散张量成像在颅脑损伤昏迷病人中的应用

目的初步探讨颅脑损伤昏迷病人上行网状激活系统(ARAS)弥散张量成像(DTI)和预后的相关性。方法以最近3年的颅脑损伤后昏迷病人为研究对象,在颅脑创伤后的3周和5周行DTI和纤维示踪成像(DTT)检查。种子兴趣区为中脑和桥脑被盖区,目标兴趣区为丘脑板内核。分析ARAS纤维束的部分各向异性(FA)、平均弥散率(MD)、纤维束量(TV),及其变异和病人颅脑创伤3月后意识状态的关系。采用Spearman相关分析,分析FA、MD、TV和预后评分的相关性。结果 3周时上行网状激动系统FA、MD和3月时的预后之间无相关性,TV和3月时的预后有统计学相关性(相关系数为0. 89,P 0. 001)。5周时,FA、TV和3月时的预后呈正相关性(P 0. 001),3周至5周间FA的变异与3月时的GCS评分和GOS评分呈正相关(P 0. 005,P 0. 05),TV变异和3月时GCS评分和GOS评分呈正相关(P 0. 001)。结论颅脑损伤后昏迷患者3月后的意识状态和DTI所模拟颅脑损伤后5周时ARAS的FA、MD、TV及动态变化有相关性。亚急性期上行网状激动系统纤维束的改变可以间接反映患者意识恢复能力。