简单灵敏的免疫复合物抗原特异性固相酶联检测法

本文将聚乙二醇(PEG)比浊法和固相酶联免疫法(ELISA)结合,建立了—较灵敏的免疫复合物(IC)直接固相吸附抗原特异性检测法。利用牛清蛋白(BSA)为已知抗原组份的IC模型,分别对IC直接固相吸附的条件和影响因素、方法的灵敏度、重复性等进行了研究。结果发现IC在解离状态下直接固相吸附后的抗原特异性检测灵敏度明显高于未解离者。该法具有简单易行,灵敏度较高、适于临床测定大量血清样品等优点。     

肾动脉狭窄支架植入术的临床疗效观察

目的探讨肾动脉狭窄支架植入术的临床疗效.方法1997年1月～2004年12月,我院行支架介入治疗肾动脉狭窄27例.对27例术前、术后及随访期内血压、肾功能以及生活质量进行评估,并与同期单纯药物治疗肾动脉狭窄27例进行比较.结果介入组27例植入支架40枚,手术成功24例(88.9%,24/27),失败3例(11.1%,3/27),手术并发症5例(18.5%,5/27).术后在血压下降(包括收缩压舒张压)肌酐下降,肾小球滤过率增加方面,介入组获益率明显优于药物组,两组比较差异均有显著性,术后随访6个月～8年6个月,中位数为1年9个月,介入组有19例能比较健康的生活和工作,药物组仅12例能维持生活和工作.结论支架介入治疗较单纯药物治疗肾动脉狭窄疗效显著.     

PFT-α对结肠上皮细胞凋亡和周期的影响及机制探讨

目的探讨p53抑制剂（p-fifty three inhibitor—alpha，PFT-α）对结肠上皮细胞凋亡、周期的影响及机制。研究PFT-α对热化疗损伤结肠上皮细胞的影响。方法顺铂联合温热处理原代培养结肠七皮细胞30min，对比加入不同浓度PFT-α后，Annexin V—FITC／PI染色，流式细胞仪检测细胞凋亡。PI染色检测细胞周期。Western blot检测结肠上皮细胞Cyclin B1和Cdc2（Tyr15）表达。结果不同浓度PFT-α作用于热化疗处理的结肠上皮细胞后，细胞凋亡率下降且呈剂量依赖性。流式细胞仪细胞周期分析显示在运用PFT-α后，结肠上皮细胞的G2／M延长，CyclinB1和Cde2（Tyr15）蛋白表达随PFT—α的剂量升高而逐渐增强。结论PFT-α可能通过促进CyclinB1蛋白表达，Cde2（Tyr15）磷酸化水平升高，降低CyclinB1／Cde2活性，细胞停滞于G2／M期，减轻热化疗对结肠上皮细胞的损伤。     

Similar motion of a hand-held object may trigger nonsimilar grip force adjustments.

The tight coupling between load (L) and grip (G) forces during voluntary manipulation of a hand-held object is well established. The current study is to examine grip-load force coupling when motion of the hand with an object was either self-generated (voluntary) or externally generated. Subjects performed similar cyclic movements of different loads at various frequencies with three types of manipulations: 1) voluntary oscillation, 2) oscillating the right arm via the pulley system by the left leg (self-driven oscillation), and 3) oscillating the arm via the pulley system by another person (other-driven oscillation). During the self-generated movements: 1) the grip forces were larger and 2) grip-load force modulation was more pronounced than in the externally generated movements. The G-L adjustments are not completely determined by the mechanics of object motion; nonmechanical factors related to movement performance, for instance perceptual factors, may affect the G-L coupling.     

红花注射液治疗老年慢性肾功能衰竭32例临床观察

老年人肾功能随着年龄增长有“自然减退”现象，加上既往存在的高血压、糖尿病、慢性肾炎等疾病，更易出现慢性肾功能衰竭（CRF）。目前老年慢性肾衰的治疗目标是延缓肾功能减退的进程，主要的手段有控制血压、低蛋白饮食、纠正贫血、增加肠道排毒等。笔者采用中医活血化瘀的方法，通过静脉滴注红花注射液改善肾脏的供血，增加肾小球的滤过率，临床取得一定效果，现报道如下，供同道参考。[第一段]     

狂犬疫苗免疫后早期血清学抗体结果分析

目的观察接种狂犬病疫苗人群不同时期抗体产生情况，探讨最佳检测时间。方法用ELISA法检测人用狂犬病纯化疫苗接种者血清狂犬病毒抗体。结果对完成全程免疫后第7d、第14d和第30d的血清进行检测，第7d和第14d检出的抗体阳性率无显著性差异。结论现行国产狂犬疫苗的保护性不断提高，早期检测抗体对及时发现免疫失败者、降低发病率有着重要的意义。     

Augmentation of intrarenal angiotensin II levels in uninephrectomized aldosterone/salt-treated hypertensive rats; renoprotective effects of an ultrahigh dose of olmesartan.

Recent studies have suggested that aldosterone plays a role in the pathogenesis of renal injury. In this study, we investigated whether local angiotensin II (Ang II) activity contributes to the progression of renal injury in aldosterone/salt-induced hypertensive rats. Uninephrectomized rats were treated with 1% NaCl in a drinking solution and one of the following combinations for 6 weeks: vehicle (2% ethanol, s.c.; n=9), aldosterone (0.75 mug/h, s.c.; n=8), aldosterone+Ang II type 1 receptor blocker olmesartan (10 mg/kg/day, p.o.; n=8), or aldosterone+olmesartan (100 mg/kg/day, p.o.; n=9). Aldosterone/salt-treated hypertensive rats exhibited severe proteinuria and renal injury characterized by glomerular sclerosis and tubulointerstitial fibrosis. Aldosterone/salt-induced renal injury was associated with augmented expression of angiotensin converting enzyme and Ang II levels in the renal cortex and medullary tissues. Renal cortical and medullary mRNA expression of transforming growth factor-beta (TGF-beta) and connective tissue growth factor (CTGF) as well as the collagen contents were increased in aldosterone/salt-treated hypertensive rats. Treatment with olmesartan (10 or 100 mg/kg/day) had no effect on blood pressure but attenuated proteinuria in a dose-dependent manner. Olmesartan at 10 mg/kg/day tended to decrease renal cortical and medullary Ang II levels, TGF-beta and CTGF expression, and collagen contents; however, these changes were not significant. On the other hand, an ultrahigh dose of olmesartan (100 mg/kg/day) significantly decreased these values and ameliorated renal injury. These data suggest that augmented local Ang II activity contributes, at least partially, to the progression of aldosterone/salt-dependent renal injury.     

血管内皮生长因子与妊娠高血压综合征发病的关系

目的　探讨血管内皮生长因子 (VEGF)在妊娠高血压综合征发病中的作用。方法　分别采用酶联免疫吸附试验检测 40例妊高征孕妇的血清VEGF水平 ,免疫组化检测胎盘及蜕膜组织VEGF及CD3 4表达情况 ,35例正常孕妇作对照。结果　①妊高征组孕妇的外周血VEGF水平及胎盘组织MVD明显低于正常妊娠组 (P <0 0 5 ) ;②两组胎盘绒毛滋养叶细胞和蜕膜组织中均有VEGF阳性表达 ,胎盘组织强阳性表达高于蜕膜。与对照组比较 ,其胎盘组织VEGF强阳性表达的轻度妊高征无显著性差异 ;而中度和重度妊高征与对照组相比 ,则明显降低 ,差异显著 (P <0 0 5 )。各组孕妇蜕膜组织中VEGF的表达强度和差异无显著性。③孕妇外周血VEGF水平与新生儿出生体重 (r =0 2 9,P <0 0 5 )和胎盘重量 (r =0 34,P <0 0 1)均存在直线正相关关系。结论　妊高征患者血清VEGF水平和胎盘组织MVD降低 ,胎盘组织VEGF表达明显下降 ,都可能在妊高征的发病中起一定的作用。     

螺旋CT多功能重建在骨关节外伤中的应用

目的 探讨螺旋cT功能重建在骨与关节外伤中的应用，提高重建技术的使用能力和诊断水平。方法 对使用双层螺旋CT，SSD，MPR，MIP等多种方式重建检查的49例复杂的骨与关节外伤病例进行回顾性分析。结果 49例骨关节外伤重建成像，其中，颅底3例，颌面部7例，颈、胸、腰、骶椎共17例，肩胛骨3例，髋关节8例，膝关节11例。SSD在显示碎骨片明显移位的空间关系方面较MIP，MPR为佳，它可以直观地、立体地、清晰地、多角度显示骨关节损伤，而MIP在显示骨折细节方面较优，尤其在外伤中颅窝观察有关神经孔方面。结论 螺旋CT的SSD，MPR和MIP技术的综合应用，对复杂的骨折、关节损伤的显示效果良好，具有较高的临床应用价值。     

聚苯醚热固性改性及其性能研究

通过溴化聚苯醚和格利雅试剂反应，将不饱和基团烯丙基引入聚苯醚中实现其热固性改性，由^1H-NMR和FTIR进行结构表征。确定了烯丙化聚苯醚的固化工艺，并对其固化产物性能进行测试。结果表明：按合成新工艺制备的热固性聚苯醚，其固化产物具有优异的介电性能(低介电常数、低介电损耗因子)，良好的耐溶剂性能和低吸湿性。