芪苈强心胶囊对缺血性心肌病患者心房纤颤、左房内径及心脏β_1受体和M_2受体自身抗体的影响

目的:观察芪苈强心胶囊对缺血性心肌病患者部分心功能指标、左房内径、心房纤颤转复率、心脏β1受体和M2受体自身抗体平均几何滴度的影响并探讨其机制。方法:将198例缺血性心肌病并心房纤颤患者随机分为2组,治疗组(98例)常规治疗基础上加服芪苈强心胶囊;对照组(100例)在常规治疗基础上加服地高辛片,疗程为6个月,统计2组患者治疗前后上述指标的变化。结果:(1)2组患者经过治疗后,部分心功能指标均较治疗前有改善,差异具有统计学意义(P0.05),但组间差异无统计学意义(P0.05);(2)治疗组心房纤颤转复率明显高于对照组,差异具统计学意义(P0.05)。(3)6个月后,治疗组的左房内径、β1、M2受体自身抗体平均几何滴度较之治疗前及对照组均有减少,差异具有统计学意义(P0.05)。结论:芪苈强心胶囊可能通过抗自身免疫机制,改善缺血性心肌病患者左房重构和心房纤颤的持续。     

Effects of mitogen-activated protein kinase signal pathway on heat shock protein 27 expression in human lens epithelial cells exposed to sodium salicylate in vitro

The roles of mitogen-activated protein kinase （MAPK） signal pathway in sodium salieylate-induced expression of heat shock protein 27 （HSP27） in human lens epithelial cells （HLECs-B3） in vitro were investigated. HLECs-B3 were incubated in the fresh media containing sodium salicylate at different concentrations for different durations, and allowed to be recovered in fresh medium without sodium salicylate for different durations with or without pretreatment with p38MAPK inhibitor （SB203580）, ERK1/2 inhibitor （PD98059） and JNK/SAPK inhibitor （SP600125）. The expression of P38MAPK, ERK1/2, JNK/SAPK, phosphorylated P38MAPK, phosphorylated ERK1/2, phosphorylated JNK/SAPK and HSP27 was detected by Western blot. The expression of HSP27 mRNA and protein was detected by RT-PCR and immunohistochemistry respectively. It was found there was only weak expression of HSP27 in normal HLECs. The expression of HSP27 was not detectable in HLECs-B3 that were exposed to sodium salicylate （55 retool/L） for 1-5 h. It was indicated that recovery from sodium salicylate （〉35 mmol/L） significantly increased the synthesis of HSP27. The expression of HSP27 was up-regulated in HLECs-B3 under sodium salicylate recovery for 3 h, reached the peak level for 6 h, and returned to the level of control cells by 24 h. Activation of P38MAPK from sodium salicylate stimulation occurred at 30th rain, and increased significantly at 1st h, then declined and renamed to baseline level at 3rd h under sodium salicylate recovery. Activation of ERK1/2 occurred at 1st h and reached the peak level at 6th h under sodium salicylate recovery. However, JNK/SAPK was inactivated by sodium salicylate. The expression of HSP27 could be down-regulated with the pretreatment of SB203580 and PD98059 jointly. It is concluded that sodium salicylate can induce the expression of HSP27 in HLECs-B3. The effects are mediated, at least in part, through the activation of P38MAPK and ERK1/2 signaling pathway.     

The effect of vitamin a on secretion of IFN-γ and IL-4 in A549 cells induced by <Emphasis Type="Italic">Mycoplasma Pneumoniae</Emphasis>

In order to investigate the effect of vitamin A （VA） on the secretion of IFN-γ and IL-4 in Mycoplasma Pneumoniae （MP）-induced A549 cells, A549 cells were co-cultured with MP for different time lengths and then the levels of IFN-γ and IL-4 in the cell culture supernatants were detected before and after treatment with different concentrations of VA by using the enzyme-linked immu-nosorbent assay （ ELISA）. The results showed that the level of IFN-γ and IL-4 in the supernatants of MP-induced A549 cells was much higher than that in non-induced cells （P〈0.01）. After application of VA, IL-4 level was not increased until the concentration of VA was up to 0.5×10-5 mol/L （P〈0.01）. However, with concentration of VA increased up to 1×10-4 mol/L, IL-4 was significantly suppressed （P〈0.01）. It was concluded that MP could induce the secretion of IFN-γ and IL-4 in A549 cells. VA could inhibit the secretion of IFN-γ and increase the IL-4 level in MP-induced A549 cells. However, high concentration of VA had an inhibitory effect on the secretion of IL-4 as well as on the IFN-γ. These data provided a theoretical basis for the application of VA in MP pneumonia in the clinical practice.     

鼠巨细胞病毒感染对雄性小鼠生殖性激素水平的影响

目的研究鼠巨细胞病毒（MCMV）感染后雄性小鼠生殖性激素水平的变化，探讨MCMV感染影响雄性生殖功能的可能机制。方法选择无McMV活动感染的雄性小鼠，睾丸接种MCMV或不合MCMV的细胞培养液，设立实验组与对照组，采用放射免疫法检测接种后不同时段（小鼠一个生精周期内）的小鼠血清及睾丸组织内性激素含量，并进行比较。结果睾丸匀浆组织T浓度在MCMV感染第4～9d显著降低（P〈0．05），第14～21d有一短暂恢复过程，第38d又较对照组下降（P〈0.05）。血清LH浓度在MCMV感染的第4、9、14d显著升高（P〈0．05），其它时间点比较差异无统计学意义（P〉0．05）。而感染不同时期的血清T和FSH比较差异均无统计学意义（P〉0．05）。结论MCMV急性感染可引起雄鼠生殖内分泌激素水平的改变：通过影响其下丘脑-垂体-性腺轴的调节导致雄鼠生殖功能障碍。     

细胞周期依赖性激酶抑制剂及其在眼科的应用

哺乳动物细胞能否增殖主要取决于细胞内特异性细胞周期依赖性激酶 (cyclindependentkinase,CDK)的活性发挥 ,CDK的活性发挥依赖于其正调控亚基Cyclin的顺序性表达及其负调控亚基CDK抑制剂 (cyclin dependentkinasein hibitor,CKI)的浓度。因此CKI与眼科肿瘤及增殖性疾病有着密切关系。通过抑制或激活CKI活性也有着广阔的临床治疗前景。我们就CKI的结构功能 ,CKI与眼科肿瘤、白内障、角膜病、增生性玻璃体视网膜病变等的关系及治疗作用作一综述     

我国发展电子健康面临的机遇与挑战

电子健康,随着在发达国家的逐步发展,21世纪中期它将成为医疗保健的主导模式,代表了医疗保健发展的未来。本文简单介绍了电子健康的概念和特点,重点分析了我国发展电子健康面临的机遇与挑战,希冀我国政府制订出发展电子健康的合理政策,推动我国电子健康的发展。     

Experience with intravascular lead extraction

With the increase of clinical use of cardiac pacemaker, a certain kinds of severe leadsrelated complicationspresented in a fewespecially infection ) have patients who underwent pacemaker implantation. The best way to manage this problem is to remove the transvenous leads. The technique for percutaneous removal of transvenous leads have undergone considerable development in western countries over the past 2 decades.     

对城市社区糖调节受损人群糖尿病相关知识、态度及行为的调查分析

目的：了解城市社区中糖调节受损（impaired glucose regulation,IGR）人群的糖尿病（diabetes mellitus, DM）相关知识、态度、行为现状,为糖尿病前期人群社区干预提供依据。方法采用自制糖调节受损人群 KAP 问卷调查表,对武汉市某社区130名 IGR 者进行个人基本情况和与糖尿病相关 KAP 的调查。结果①IGR 人群基本情况及问卷得分比较：各年龄组 KAP 得分与年龄增长呈负相关,不同年龄段得分差异有统计学意义（P 〈0.05）；IGR 人群 KAP 得分与学历高低呈正相关,3组不同文化程度得分差异有统计学意义（P 〈0.01）；职业组医务人员得分最高、专业技术人员次之、工人较低,不同职业组得分差异有统计学意义（P 〈0.01）。②调查问卷中 K、A、P 部分的得分情况：K 分为满分的占37.33%；A 分为满分的72.51%；P 分为满分的占51.10%。结论城市社区中IGR 人群对糖尿病相关知识、态度及行为有较强的求知欲望,存在相关知识缺乏现象,应加强对 IGR 群体的糖尿病相关知识、态度及行为的社区干预。     

长链非编码RNA RP1-85F18.6在乳腺癌细胞中的表达及其对增殖和细胞周期的影响

背景与目的:近年来,大量研究表明长链非编码RNA(lncRNA)在肿瘤发生、发展中起着重要作用。lncRNA RP1-85F18.6是新近发现的非编码RNA,其在结肠癌组织和细胞系中高表达,并可促进肿瘤细胞增殖和侵袭,抑制凋亡及调控细胞周期。然而,目前尚无lncRNA RP1-85F18.6在乳腺癌中的研究报道,因此,本研究初步探讨lncRNA RP1-85F18.6在乳腺癌细胞中的表达及其对增殖和细胞周期的影响。方法:qRT-PCR法检测lncRNA RP1-85F18.6在乳腺癌细胞系MDA-MB-231、MBA-MD-468、MCF-7 及正常乳腺细胞系MCF-10A中的表达。将MDA-MB-231细胞分别转染RP1-85F18.6沉默序列(沉默组)与阴性对照序列(阴性对照组),将无处理的MDA-MB-231细胞作为空白对照组,在各组细胞中采用MTT法测定增殖能力,PI染色流式细胞仪检测法测定细胞周期,Western blot法测定Ki-67、增殖细胞核抗原(PCNA)、cyclin A1和p21~(C1P1)蛋白的表达。结果:乳腺癌细胞系MDA-MB-231、MBA-MD-468及MCF-7中lncRNA RP1-85F18.6相对表达量均高于正常乳腺上皮细胞系MCF-10A(均P0.05)。沉默组在转染后24、48、72、96 h的OD_(490) _(nm)值均明显低于空白对照组(均P0.05)。与空白对照组比较,沉默组的G_1/G_0期细胞比例无明显变化(P0.05),但S期细胞比例明显升高、G_2/M期细胞比例明显降低(均P0.05);沉默组Ki67﹑PCNA及cyclin A1蛋白表达量明显下调,而p21~(C1P1)蛋白表达量明显上调(均P0.05)。阴性对照组与空白对照组间以上指标差异均无统计学意义(均P0.05)。结论:lncRNA RP1-85F18.6在乳腺癌细胞系中高表达,其可能通过调节增殖相关蛋白及细胞周期蛋白的表达而参与乳腺癌的发生与发展,对lncRNA RP1-85F18.6及其相关靶基因的干预可能为乳腺癌的治疗提供新的途径。