血浆置换治疗重型肝炎疗效观察

目的 评价应用血浆置换治疗重型肝炎的临床疗效。方法 对48例重型肝炎患在综合保肝治疗基础上给予血浆置换治疗。结果 早期好转率85．71％，中期好转率33．33％，差异具有显性。结论 血浆置换是重肝较为安全有效的治疗手段，早期应用效果尤佳。     

电位滴定法的计算原理及Excel软件应用

阐述了电位滴定法的计算原理以及Excel软件在电位滴定数据处理中的应用。     

帕司烟肼介入凝胶体外抗结核活性及安全性研究

目的 观察帕司烟肼凝胶体外抗结核作用和支气管介入的安全性。方法 手工法、仪器法分别测定帕司烟肼及其凝胶的最小抑菌浓度和最小杀菌浓度及家兔经支气管介入的安全性试验。结果 帕司烟肼凝胶对H37Rv标准株、牛型结核分枝杆菌、草分枝杆菌MIC值分别为0．1、0，1、0．4mg／L，MBC值分别为0，2、0．2和1．6mg／L；帕司烟肼凝胶与帕司烟肼单体MIC、MBC值无显著差异；动物实验表明该药应用安全。结论 帕司烟肼凝胶具有与帕司烟肼单体相同的抗结核菌药效，卡波姆基质不影响帕司烟肼的抗菌活性；以卡波姆为基质的帕司烟肼凝胶应用安全。     

10年间剖宫产率及指征变化与围生儿死亡率的关系

目的：探讨剖宫产率及剖宫产指征变迁对围生儿死亡率的影响。方法：对10年间剖宫产病例资料进行回顾性分析。结果：1992－1996年剖宫产率为36．50％，显著低于1997－2001年的47．78％，两者比较，差异有极显著性（P＜0．01）。在剖宫产指征中，妊娠并发（合并）症始终处于第1位，社会因素上升为第2位，难产为第3位，胎儿窘迫为第4位。围生儿死亡率1992－1996年为17．88‰，1997-2001年为22．23‰，两者比较，差异无显著性（P＞0．05）。结论：剖宫产率升高在一定范围内降低了围生儿死亡率，但随着剖宫产率的进一步升高，围生儿死亡率并未随之下降。因此，应合理掌握剖宫产指征，降低剖宫产率。     

51例老年子宫内膜癌临床分析

目的 :分析老年子宫内膜癌的临床特点、病理类型及处理方法 ,以期进一步指导临床治疗。方法 :对 131例子宫内膜癌患者中≥ 6 0岁 5 1例 (老年组 )进行回顾性研究并与同期≤ 5 0岁的 35例 (中青年组 )做对照分析。全部手术切除的标本均经病理检查确诊。结果 :老年组与中青年组临床分期 ,Ⅱ期以上的分别为 2 9 4 %(15 / 5 1)和 11 4 %(4/ 35 ) ;组织分级G2 -G3分别为 6 8 6 %(35 / 5 1)和 45 7%(16 / 35 ) ;子宫肌层浸润深度大于 1/ 2的分别为 43 1%(2 2 / 5 1)和 2 0 0 %(7/ 35 ) (P <0 0 1) ;5年存活率分别为 6 6 6 %和 91 4 %(P <0 0 5 )。结论 :老年子宫内膜癌的预后较中青年妇女的子宫内膜癌差 ,与临床分期晚和组织分化差有关。     

Chronic lithium treatment inhibits pilocarpine-induced mossy fiber sprouting in rat hippocampus.

Lithium remains the gold standard in the treatment of bipolar disorder. Long-term treatment with lithium may lead to specific adaptational changes in gene expression that contribute to a neuroprotective effect. In this study, the pilocarpine model of spontaneous limbic epilepsy was used to induce mossy fiber sprouting (axonal growth of the dentate granule cells that synapse on the pyramidal cells of the CA3 region) to examine the prophylactic neuroprotective effects of lithium in vivo. There were four groups of animals: pilocarpine treated (Pil+/Li-); pilocarpine treated followed by lithium (Pil+/Li+); lithium alone (Pil-/Li+); control (Pil-/Li-). Timm staining was used to obtain density measurements in the stratum oriens and the inner molecular layer of the hippocampus. Mossy fiber density was higher in the pilocarpine-treated animals compared to controls. Chronic lithium following pilocarpine treatment attenuated the density of mossy fibers but lithium alone had no effect. No changes in hilar volume or neuronal number were detected using stereological procedures. The ability of lithium to attenuate activation-induced reorganization in the hippocampus provides evidence for its role as a neuroprotective agent in an in vivo model that may be relevant to its clinical effects in bipolar disorder.     

A dendritic cell line genetically modified to express CTLA4-IG as a means to prolong islet allograft survival

BACKGROUND: Dendritic cells are potent antigen-presenting cells that bind allogeneic T cells. They are thus candidates for targeting immunoregulatory molecules to the alloreactive T cell compartment and suppressing the alloimmune response. METHOD: A dendritic cell line derived from the BALB/c mouse (H2d) was genetically modified to express the immunoregulatory molecule CTLA4-Ig. The ability of these dendritic cell transfectants to downregulate the alloimmune response was tested in an islet transplant model. Allogeneic C57Bl/6 (H2b) mice were rendered diabetic with streptozocin, and they received BALB/c islet (H2d) transplants. Mice were administered 25 million untransfected or CTLA4-Ig-transfected D2SC/1 cells i.v. on the day of islet transplantation and 6 days later[fnc]. RESULT: Mice treated with CTLA4-Ig-transfected D2SC/1 cells demonstrated prolonged allograft survival (mean = 20 days, median = 17 days, SD = 9.39) compared with mice treated with untransfected D2SC/1 cells (mean = 12 days, median = 11 days, SD=2.74) or untreated control mice (mean = 11 days, median = 11 days SD = 1.41). Third party allograft survival was not prolonged in mice receiving similar treatment. CONCLUSIONS: These results demonstrate that a genetically modified dendritic cell line can suppress the alloimmune response and prolong islet allograft survival in an allospecific manner. The findings also suggest that genetically modified dendritic cells may be useful in targeting alloreactive T cells and prolonging allograft survival.     

电阻抗断层成像硬件系统的初步研究

各种原因导致的人体重要器官的缓慢出血等是导致病人死亡或预后较差的重要原因之一,目前的医学成像技术,包括CT、MRI、PET、超声等还无法对出血的过程进行长期、连续的床旁监测和监护。电阻抗断层成像是以目标体内电阻抗的分布或变化为成像对象的一种新型成像技术,作为一种廉价的无损伤检测技术,不使用核素或射线,无毒无害,因而可以成为对病人进行长期、连续图像监护的设备。本文介绍了一个基于物理模型的电阻抗成像硬件系统(FMMU V3),包括具有32个银复合电极的物理模型、采用DDS技术的恒流激励源、高精度信号检测模块、驱动测量模式程控设置模块、数据采集模块、数字I/O模块和高精度多路电源模块。该系统基于物理模型的测量数据经100次迭加后,测量精度在小信号时为1.0%,大信号时为0.1%。采用外触发DMA方式采集一组成像数据(32 X 31个)的时间小于1秒,基本满足了基于物理模型的动态成像要求,并给出了基于物理模型的初步动态成像结果。     

红藻氨酸诱导癫痫发作大鼠海马结构中EAAC-1变化

目的 研究谷氨酸转运蛋白亚型（ＥＡＡＣ－１）在红藻氨酸（ＫＡ）诱导癫痫发作大鼠海马结构中的变化。方法 用红藻氨酸诱导的复杂部分性癫痫模型,将２０只ＳＤ大鼠随机分为３,６,１２,４８ｈ及对照５组,用免疫蛋白印记法（Ｗｅｓｔｅｒｎ ｂｌｏｔ）观察ＥＡＡＣ－１在海马结构上的变化。结果 ＫＡ注射后３ｈ海马ＥＡＡＣ－１开始减少,６ｈ显著减少,１２ｈ后ＥＡＡＣ－１逐渐恢复。结论 ＥＡＡＣ－１表达的调控可能与Ｋ