锂-匹罗卡品癫(癎)模型中核转录因子的表达及干预机制

目的探讨癫发作时核转录因子(nuclear factor kappaB,NF-κB)在神经元损伤中的表达变化以及拉莫三嗪、黄芪注射液对这一过程的影响。方法干预组大鼠预处理3d后制作大鼠锂-匹罗卡品(lithi-um-pilocarpine,Li-PC)癫模型,造模后24h、3、7d应用光镜及电镜进行神经元形态学观察,利用免疫组织化学法半定量检测NF-κB的表达含量。结果与正常组比较,模型组海马内NF-κB表达明显增多(P<0.01),在24h达峰值;与模型组比较,拉莫三嗪、黄芪注射液能够使NF-κB表达增加(P<0.05)。结论NF-κB的主要作用是有利于神经元生存,拉莫三嗪、黄芪注射液可通过调控凋亡因子的表达而发挥对癫的神经元保护作用。     

PHA对单产和联产白细胞介素-2活性的影响

本文研究了用人外周血白细胞在细胞浓度为5×10~5个/ml、培养时间为24h,PHA加量对单独生产白细胞介素_2(单产)及联合生产a_干扰素、白细胞介素-2(联产)的影响.单产中,以25μg/mlPHA刺激量为宜;联产中以100μg/ml刺激量最好.联产比单产所得白细胞介素-2产量高10倍以上,且纯度高.     

心理干预对维持性血透患者的有益影响

神经-内分泌-免疫学说的发展为心理干预在维持性血透患者中的应用提供了理论基础.本文研究短程心理干预前后患者免疫功能指标及患者感染率、住院率、病死率等指标的变化,旨在探讨心理干预在血透患者整体治疗中的重要性及有效性.     

降低ePTFE隆鼻术后感染发生率的临床研究

目的:寻找一种降低膨体聚四氟乙烯(ePTFE)隆鼻术后感染发生率的方法。方法:尝试将雕刻成形的ePTFE假体放入含有庆大霉素溶液的注射器内,负压抽吸使庆大霉素溶液进入材料的孔隙,然后将假体置入。结果:比较处理组与未处理组感染发生的情况,庆大霉素处理组的感染率明显低于未处理组,有显著性差异。结论:该方法是一种减少ePTFE隆鼻术后感染发生率的简便易行方法。     

囊肿/脑室-腹腔分流术治疗鞍区蛛网膜囊肿一例

患者女,43岁。因头胀痛渐加重2个月伴走路不稳而行头颅CT及MRI检查,提示鞍上蛛网膜囊肿,大小约4．2 cm×3cm×3cm,伴梗阻性脑积水。神经系统查体见行走不稳,双眼视乳头轻度水肿,余无特殊异常发现。手术方法：局麻下安装脑立体定向仪头架后行CT定位扫描,以蛛网膜囊肿壁与右侧脑室前角交界处为靶点计算其X、Y、Z轴的坐标。回到手术室后局麻下于眉间上9cm右侧旁开2．5cm处     

磷酸化肌球蛋白轻链及其激酶在耐药颞叶癫(癎)患者脑组织中的表达

目的探讨耐药性癫癎颞叶和海马脑组织中磷酸化肌球蛋白轻链(phosphorylation of myosin light chain,P-MLC)及其激酶(myosin light chain kinase,MLCK)的表达在癫癎芽生形成中的作用。方法免疫组化检测32例耐药性颞叶癫癎中P-MLC及其激酶MLCK的蛋白质表达水平,并与对照组比较。结果P-MLC免疫组化结果显示,耐药性颞叶癫癎组颞叶光密度值(0.35±0.13)高于对照组(0.19±0.027,P<0.05);耐药组海马光密度值(0.41±0.02)高于对照组(0.10±0.06,P<0.05)。免疫组化结果显示耐药组的MLCK表达水平在颞叶组织和海马组织中较对照组无统计学差异(P>0.05)。结论P-MLC及其激酶MLCK的功能与苔藓纤维芽生关系密切,P-MLC蛋白质产物在耐药性癫中明显升高,但其磷酸化激酶MLCK的表达并不升高,提示MLCK和去磷酸化酶间动态平衡被打破是P-MLC升高的原因,而P-MLC的升高可能在苔藓纤维芽生的形成中发挥重要作用。     

深圳龙岗区1993～2002职业性有机溶剂中毒调查分析

目的：对深圳市龙岗区1993～2002年间共发生的29起职业性有机溶剂职业中毒事故进行分析，寻找引起中毒发生的因素。方法：按职业性有机溶剂中毒诊断标准对收集的29起有机溶剂中毒事故资料进行分析。结果：中毒175人，死亡5人，死亡率2．86％。造成事故原因主要为通风排毒措施不佳．个人防护较差，职工缺乏安全防护知识。结论：三氯乙烯和正已烷中毒已成为有机溶剂中毒的发生的主要因素。     

体外受精-胚胎移植治疗不孕症142个周期临床分析

体外受精与胚胎移植(IVF-ET)使得许多因输卵管阻塞及其他原因用传统方法治疗无法受孕的妇女获得了妊娠机会.自1992年Palermo等[1]用胞浆内单精子注射(ICSI)获妊娠并成功分娩健康婴儿后,男性不育(严重少精、弱精)的治疗有了突破性进展.我中心于2001年1月～2003年11月对106对不孕症夫妇,实施常规IVF、ICSI或冻融胚胎移植,共142个周期,现将结果报道如下.     

脂氧素A4对心肌缺血再灌注损伤的保护作用

Objective To investigate the roles of lipoxin A4, an endegenous lipid mediator with wide anti-inflammatory fea- tures, in attenuating myocardial ischemia-reperfusion injury and the possible mechanisms. Methods Thirty male KM mice were divid- ed randomly into three groups, 10 in each: ischemia-reperfusion group (group A), lipoxin A4 (0.1 mg/kg) group (group B) and Zn- PP (Zinc protoporphyrin Ⅸ, 25 mg/kg)phus lipoxin A4 (0.1 mg/kg)group (group C). A ischemia-reperfusion heart model was de- veloped by ligating the lift anterior descending branch of the coronary artery. A dine of 10% dehydrated alcohol in 0.2 ml for group A, a dose of isochoric lipoxin A4 for group B and a dose of isochoric ZnPP + lipoxin A4 for group C was infused into the ascending aorta through a catheter, which was kpassing the right common carotid artery, 30 minutes after reperfusion. The concentration of serum TNF-α, activities of serum crestine kinase(CK) and lactate dehydrogenase (LDH), activities of myeloperoxidase (MPO) and malond- ialdehyde (MDA) and the cell apoptosis rate in the myocardial tissue were measured 5 hours after reperfusion. Pathological features of the inflammatory infiltration in the myocardium were also observated.Results As compared with group A, the inflammatoryry infiltra- tion in the ischemic and necrotic regions tithe myocardium was reduced, with group C in the intermediate range. The serum activities of CK and LDH wine significantly lower in group B and C than that in group A, and the lowest activities were detected in group B. Similar findings were observed for MPO, an indicator for neutrophil infiltration, and MDA, an indictor for cell injury caused by oxy- gen radicals, in the myocardium. The concentration of TNF-α and the rate of cadiocyte apoptosis were decreased significantly in group B(P < 0.01). ZnPP, an inhibitor of heine oxygenase (HO)-1, attenusted the above protective effects of lipoxin A4 significantly (P<0.05). Conclusion Lipoxin A4 has protective effects against myocardial ischemia-reperfusion injury, and HO-1 may have a potential role in the protectve mechanisms of lipoxin A4, probably pertly by means of reducing the production of reactive oxygen spe- cies and TNF-α, decreasing the activation and infiltration of neutrophils, alleviating inflammatory damage and avoiding apoptosis.     

食管胃吻合口-胸腔瘘的影像学诊断和介入治疗

目的：探讨食管胃吻合口-胸腔瘘的影像学特征及其介入治疗方法。方法：回顾性分析6例具有完整临床资料的食管胃吻合口-胸腔瘘的口服碘水造影及CT表现；透视下，置入蘑菇状覆膜内支架封堵瘘口。结果：6例口服碘水造影显示对比剂均经吻合口溢入胸腔；6例螺旋CT检查，其中5例显示吻合口与胸腔相通，1例瘘口小而未显示。全部病例顺利置入内支架，既完全封堵了瘘口，又解决了进食问题。结论：根据口服碘水造影和螺旋CT征象可以诊断食管胃吻合口-胸腔瘘，置入蘑菇状覆膜内支架封堵瘘口操作简单、安全、近期疗效明显，是一项值得推广的新技术。