Expression of a G-protein {beta} subunit-related gene during lymphocyte activation

Using a subtractlve strategy, we have cloned an activation-relatedgene from a human B cell cDNA library. Sequence analysis revealedthat this gene was identical to H12.3, a gene belonging to anexpanding family of guanlne nucleotlde-blndlng protein ßsubunlts. The expression of H12.3 was induclble in the latephase of mltogen-stlmulated T and B cells. In T cells, IL-2and IL-4 by themselves had no direct effect on the expressionof H12.3, but they could augment the level of steady-state H12.3mRNA stimulated by phytohemagglutlnln. On the other hand, IFN-and IL-6 had no obvious effect on the expression in B cellswith or without Staphytococcus aureus Cowan l-stlmulatlon. CyclosporinA, a strong immunosuppressant, Inhibited the mltogen-stlmulatedexpression of H12.3, but rapamycin, another such agent, didnot. In synchronized Jurkat cells, the expression of H12.3 hadno cell cycle-dependent decrease in S and G₂/M phase, whilecyclin E, which controls the progression of the cell cycle unlate G₁ phase, did show a periodic expression pattern. The resultssuggest that H12.3 might be involved in regulation of lymphocyteactivation.     

北京市新入监罪犯人格特点及心理卫生状况

目的:调查新入监罪犯的人格特点及心理卫生状况.方法:采用人格诊断问卷(PDQ-4 )、症状自评量表(SCL-90)和Zung氏抑郁自评量表(SDS)对1,511名新入监罪犯进行测试,并进行相关分析.结果:罪犯的PDQ-4 总分明显高于常模,暴力和财产犯罪者的反社会型和攻击型得分高于性犯罪者(P<0.01);暴力和性犯罪者的表演型得分高于财产犯罪者;而财产和性犯罪者的回避型、强迫型和被动攻击型的得分高于暴力犯罪者,差异均有统计学显著意义(P<0.05).所有罪犯的SCL-90总分和各因子分,SDS总分均明显高于正常人群.结论:新入监罪犯的心理问题较为严重,人格缺陷较为突出.     

患者知情同意权代为行使的案例分析及启示

以医疗典型纠纷案例为例,通过厘清相关法律对患者知情同意权行使及代为行使的相关规定,探讨知情同意权代为行使行为的界定。启示如下:知情同意权代为行使应设前置条件进行限制和约束;代为行使主体包括近亲属或关系人、委托代理人;患者本人意见具有首要优先性,委托代理人意见应优先于近亲属意见。     

做强、做大、做活,培育一流科技期刊

【目的】 总结《材料科学技术(英文版)》在发展过程中“做强、做大、做活”的实践经验,探索培育一流科技期刊的可行道路。【方法】 采用文献研究、对比分析、定性分析、列举实证等方法,分析讨论如何通过“做强、做大、做活”培育一流科技期刊。【结果】 历经十余年努力,《材料科学技术(英文版)》的影响因子从0.175提升到10.319,年发文量从180篇增加到1000篇左右,进入JCR学科排名Top 2,成为国际材料领域的主流期刊。【结论】 培育世界一流科技期刊是我国科技创新事业的当务之急,也是重中之重。“做强、做大、做活”是培育一流期刊的可行且有效的途径。     

静注阿奇霉素治疗呼吸系统感染的临床研究

目的：评价阿奇霉素静脉注射剂对呼吸系统感染的临床疗效及不良反应。方法：轻到中度呼吸系统感染患者44例,随机分为2组,一组使用阿奇霉素治疗5天,另一组使用红霉素治疗7－14天,对临床疗效及不良反应进行评价,在治疗前,治疗后第4天以及治疗结束后1天进行细菌学评价。结果：44例患者入选,41例完成观察,阿奇霉素组治疗有效率为95．23％,而红霉素组为85％（P＞0．05）;二组中分别检出16株细菌,并分别有15株被清除（93．75％）,阿奇霉素组药物不良反应的发生率为14．3％,红霉素组为17．4％（P＞0．05）,结论．静脉注射阿奇霉素5天与使用红霉素7－14天的临床疗效相当,阿奇霉素的副作用发生率较低,主要为一过性ALT升高。     

内外科输血前四项检查结果的调查分析

为了了解内外科输血前四项检查结果的情况,笔者总结了从2000年11月～2001年5月的外科420人和内科69人因各种疾患需要输血的住院患者检查结果外科、内科乙肝六项检查含HBsAg阳性各为27例、8例,阳性率分别为6.4%(27/420)、11.6%(8/69);抗HCVIgG阳性各为12例、6例,阳性率分别为2.9%(12/420)、8.7%(6/69);梅毒抗体阳性分别为3例、2例;外科HIV抗体全阴性,内科阳性2例.提示输血前四项检查很有必要,以减少不必要的由输血引起的医疗纠纷.     

TLR9 Deficiency in B Cells Promotes Immune Tolerance via Interleukin-10 in a Type 1 Diabetes Mouse Model

Toll-like receptor 9 (TLR9) is highly expressed in B cells, and B cells are important in the pathogenesis of type 1 diabetes (T1D) development. However, the intrinsic effect of TLR9 in B cells on β-cell autoimmunity is not known. To fill this knowledge gap, we generated NOD mice with a B-cell–specific deficiency of TLR9 (TLR9^fl/fl/CD19-Cre+ NOD). The B-cell–specific deletion of TLR9 resulted in near-complete protection from T1D development. Diabetes protection was accompanied by an increased proportion of interleukin-10 (IL-10)–producing B cells. We also found that TLR9-deficient B cells were hyporesponsive to both innate and adaptive immune stimuli. This suggested that TLR9 in B cells modulates T1D susceptibility in NOD mice by changing the frequency and function of IL-10–producing B cells. Molecular analysis revealed a network of TLR9 with matrix metalloproteinases, tissue inhibitor of metalloproteinase-1, and CD40, all of which are interconnected with IL-10. Our study has highlighted an important connection of an innate immune molecule in B cells to the immunopathogenesis of T1D. Thus, targeting the TLR9 pathway, specifically in B cells, may provide a novel therapeutic strategy for T1D treatment.     

完全右半肝-左半肝劈离式肝移植的临床应用:附四例报告

目的探讨完全右半肝-左半肝劈离式肝移植在成人-成人或成人-大体重儿童中的临床应用。方法回顾2019年1月至12月间首都医科大学附属北京友谊医院完成的4例完全右半肝-左半肝劈离式肝移植的供受者临床资料,分析劈离式肝移植的手术方式、冷缺血时间、手术时间、术中输血量,观察患者术后并发症及相关预后。结果4例完全右半肝-左半肝劈离式肝移植的受者包括3例成人和1例大体重儿童(45 kg),年龄范围14~48岁,体重范围45~61 kg,终末期肝病模型评分分别为21、12、41和30分。移植物质量与受者体质量比为0.85%~1.35%。冷缺血时间457~650 min,手术时长460~575 min。4例患者移植术后早期肝功能恢复顺利,均未出现小肝综合征。随访至术后6个月,其中1例出现胆道吻合口漏,经内镜逆行胰胆管造影术治疗后治愈;1例出现胆道狭窄,经皮肝穿刺胆道引流术治疗后反复胆道感染;1例术后6个月死于肺部感染。结论在严格病例选择的情况下,可以开展完全右半肝-左半肝劈离式肝移植。