PPD为丝裂源作淋巴细胞转化试验对结核性胸膜炎的诊断价值

以结核菌素纯蛋白衍生物(PPD)为丝裂源作淋巴细胞转化试验,检测结核性(17例)和非结核性(14例)胸膜炎患者的外周血淋巴细胞(PBL)和胸腔积液淋巴细胞(PEL)对PPD 的反应性。结果显示:结核性胸膜炎患者无论PPD 皮试是阳性还是阴性,其PEL 的PPD 刺激指数(PPD-SI)都显著高于PBL(P 分别<0.001与<0.01);结核性PEL 的PPD-SI 显著高于非结核性PEL(P<0.001)。提示PPD 胸腔积液淋巴细胞转化试验可作为诊断结核性胸膜炎的有效方法。     

计算机技术定量分析三尖瓣返流患者右室收缩和舒张功能的研究

本研究对３０例三尖瓣返流患者同步进行了多普勒超声心动图和右心导管检查，应用计算机软件程序对三尖瓣返流频谱曲线进行微分处理。结果表明，两种技术测量的右室压力最大上升速率、右室心肌最大生理缩短速度、右室压力最大下降速率以及右室心肌松驰时间常数均高度相关（ｒ分别为０．９３，０．８６，０．９４，０．９５），表明三尖瓣返流压差法能够无创性估测右室收缩和舒张功能，应用计算机软件程序能够使测量方法简便、准确。     

AG11067减少血管成形术后的冠状动脉粥样硬化

AGI1067(Ⅰ)是一种抗炎症药物，Ⅱb期CART-2试验结果显示，(Ⅰ)可减少血管成形术后的冠状动脉粥样硬化。     

FM-VP4进入Ⅱ期临床

Forbes Medi-Tech公司向美国FDA提出其降胆固醇药FM-VP4（Ⅰ）的Ⅱ期临床试验IND（新药临床试验）申请。（Ⅰ）是一种胆固醇吸收抑制剂，属于新一类降胆固醇药。即将在美国进行的这项临床试验设计糅合了临床前研究和一项欧洲人临床试验（概念证明）的结果。     

地塞米松对布比卡因诱导小鼠神经元毒性的影响

Objective To investigate the effect of dexamethasone on the toxicity of bupivacaine in murine neurons.Methods Murine neuroblastoma cell line N2a was obtained from ATCC cell bank (USA). The cells were cultured in 10% fetal cow serum/MEM culture medium and divided into 4 groups voup I control (Con); group II bupivacaine ( Bup); group Ⅲ dexamethasone (Dex) and group IV Dex + Bup. The culture medium contained bupivacaine 900 μmol/L in group Bup and dexamethasone 1 μmol/L in group Dex respectively. In group Dex + Bup ( IV ) Bup was added to the culture medium with a final concentration of 900 μmol/L at 12 h after pretreatment with Dex 1 μmol/L. The cells were inoculated in 24 well plates (0.5 ml in each well, 24 wells in each group) and 10 cm culture dishes (7 ml in each dish, 4 dishes in each group). The release rate of LDH was calculated and the morphology of the cells and nucleus condensation (by Hoechst 3334224 fluorescent staining) was detected at 9 h of incubation in 24 well plates. The mitochondrial transmembrane potential (by JC-1 assay) and phosphorylation of Akt and ERKs (by Western blot) were measured at 5 h of incubation in 24 well plates and in culture dishes respectively. ResultsBupivacaine caused severe damage to the N2a cells as evidenced by increase in LDH release and nucleus condensation (apoptosis), dephosphorylation of Akt and ERKs, decrease in mitochondrial transmembrane potential and severe morphological changes. Dexamethasone pretreatment significantly attenuated bupivacaine-induced neurotoxicity. Conclusion Dexamethasone can protect N2a cells from bupivacaine-induced neurotoxicity through stabilization of mitochondrial transmembrane potential and inhibition of dephosphorylation of Akt and ERKs.     

氟乙酰胺致中毒性脑病32例临床分析

氟乙酰胺是一种有机氟高毒农药 ,不少地方用于灭鼠。由于管理不当、使用不善造成中毒人数逐年增多。为提高对该农药中毒认识处理 ,作者收集１９９５年１２月～２０００年１２月收治的３２例氟乙酰胺中毒患者 ,对其中枢神经系统表现分析报告如下。１临床资料１．１一般资料本组３２例中男１７例 ,女１５例。年龄８～８０岁 ,平均３３．４岁 ,其中＜１０岁１５例 ,１７～６０岁１４例 ,＞６０岁３例。消化道中毒２９例 ,其中误服２１例 ,轻生８例 ,皮肤、呼吸道吸入中毒３例。潜伏期长短不一 ,经消化道中毒２９例为１０ｍｉｎ～数小时 ,３例因…     

从同份标本中分离出两株不同细菌结果分析

１病原摘要患者徐某，男，２０岁。２００１年９月２５日因外伤后左下腹疼痛，流血伴肠外露３小时后入院，入院诊断为：（１）左下腹壁外伤并肠外露；（２）左下腹股沟皮、腹壁皮肤软组织、肌肉广泛挫裂伤；（３）失血性休克；９月２６日查房时见左侧腹股沟区伤口发出恶臭味，如尸臭，伴有大量淡红色液体渗出恶臭。肌肉变黑、坏死，怀疑为“气性坏疽”；即采集多处创口渗出物送检。经培养鉴定为：（１）人苍白杆菌；（２）枯草芽胞杆菌。２细菌学鉴定２．１细菌分离接标本后严格按需氧菌、厌氧菌操作规程接种血平板及麦康凯平板，厌氧培养４…     

中国1号方胶囊慢性毒性实验

中国1号方胶囊系由天然名贵中药经特殊工艺加工精制而成.被国家保密局列为国家级技术保密产品.本产品主要用于治疗HIV感染及恶性肿瘤,具有明显的保护细胞免疫及调节体液免疫的作用.为保证临床安全使用,对其进行毒性研究[1].