Efficiency of Superfine Glass Fiber Membrane\= Filters for Depleting Leukocytes

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药流与负压吸宫法的效果和可接受性研究

研究的目的:比较RU486/Cytotec药物和负压吸宫术两种流产方法的效果,以及医学的和个人的可接受性.对象为通过咨询,介绍两种流产方法后,让对象自愿选择而组成.年龄在20～34岁.药物组100例,闭经35～42天,第1天口服RU486 600mg,第3天服Cytotec(PGE1)0.4mg,第17、43天回医院随访.手术组100例,闭经≤56天,负压吸宫术后第14、43天回医院随访.结果:完全流产率药物组为89%,手术组为100%.对象选择这两种流产方法的主要原因:药物组94%的人认为痛苦少,手术组的55%认为手术快、节省时间,而且手术同时可取出或放置宫内节育器(占45%).结论:RU486/Cytotec药物流产和负压吸宫术在各自适合的人群中都具有高度的可接受性.两种方法各具优缺点,不能相互取代,二者相辅相成,取长补短,将使终止妊娠的措施更为安全     

Spatio-temporal progression of the AEP P300 component using the cortical imaging technique

Summary The cortical imaging technique (CIT), a mathematical method for simulating the potential fields on the surface of the brain, was used to analyze the spatio-temporal progression of the AEP P300 component (as well as the preceding and subsequent N2a and N3 components) from thirty normal adult subjects recorded in a standard oddball paradigm. Comparisons were made between the progressions of the endogenous event-related cognitive potentials and the exogenous stimulus-dependent potentials (Nl component). Cortical imaging results suggest that different and multiple generator sites are involved in the production of exogenous and endogenous evoked responses. We particularly note the asymmetric development of the P300 component and the apparent anterior generator sites for the N2a component. This last result is interesting because the N2a precedes the P300 component and supports an earlier frontal contribution.     

Scopolamine Effects on Visual Information Processing, Attention, and Event-Related Potential Map Latencies

We measured performance and event-related brain potential (ERP) map latencies in 12 subjects during four visual discrimination tasks to compare the timing of scopolamine effects on information processing and attention. "Topographic component recognition" found ERP map latencies at times of best fit with a component model map. This "common topography" criterion minimized topographic differences among conditions to facilitate latency interpretations. Scopolamine slowed N1 latency in all tasks, and P3 and reaction time in some tasks. The drug delayed responses to easy targets more than to hard targets. It also induced a disproportionate N1 delay for unilateral high spatial frequency gratings. Both effects reflect a scopolamine-induced impairment when processing targets that usually capture attention. Scopolamine also impaired accuracy for unilateral high spatial frequency gratings, and for gratings presented at probable locations, confirming and extending previous findings. Scopolamine-induced P1 and N1 delays showed that visual processing was affected. Several results were inconsistent with a serial stage model. We suggest that scopolamine both delays selected processes and impairs a processing mode based on automatic capture of attention, inducing more serial processing.     

肱骨外髁的生物力学实验研究及其临床应用

目的 :从生物力学角度探讨肱骨外髁骨折的发生机制和固定方法。方法 :通过电测实验法、三维光弹实验法 ,空间有限元分析法 ,研究肱骨外髁在各种体位下的受力情况和复位固定方法 ,三种实验方法互为验证 ,并应用于临床。结果 :66例肱骨外髁翻转骨折病人 ,经治疗优良率达 90 .9%。结论 :肱骨外髁骨折好发于肘关节半屈曲位跌倒 ,和肘关节伸直内翻位跌倒。骨折复位后固定在屈肘 60°～ 90°前臂旋后位最为稳定。本实验结论具有推广应用价值。     

凤阳山-百山祖保护区药用蕨类植物资源

凤阳山-百山祖自然保护区自然环境优越，植被保存良好，植物资源丰富，其中具有药用价值的蕨类植物共有79种，按其药效可分为解表类药、清热类药、祛风湿药、利尿类药、驱虫药、止血类药、活血祛疯药、补虚类药、平肝息风药等16类。     

ZMS对老年大鼠脑内NGF和BDNF的影响

目的　研究自然衰老大鼠脑内两种神经营养素与学习记忆的关系 ,以及中药活性成分ZMS的作用。方法　用Y 迷宫测试动物的学习记忆功能 ,酶联免疫吸附分析法测定脑组织中BDNF和NGF的含量。结果　老年大鼠的学习和记忆成绩比青年大鼠差 (P <0 0 1) ,脑组织中BDNF的水平降低 ,NGF的变化无显著性。老年鼠喂服ZMS 2mon后 ,学习和记忆能力改善 ,正确次数 /反应总时间比值提高 (P <0 0 1) ,同时BDNF含量也高于老年组 (P <0 0 1)。但是ZMS对脑内NGF含量无影响。结论　ZMS能提高增龄引起的脑BDNF降低 ,从而对神经元起保护作用 ,这可能是ZMS改善老年大鼠学习记忆功能的重要机制之一     

L-精氨酸、L-硝基精氨酸对红藻氨酸诱导大鼠癫痫及其海马结构中iNOS mRNA表达的影响

目的　观察诱导型一氧化氮合酶 (iNOS)在红藻氨酸(KA)癫痫大鼠海马内的表达及L 精氨酸 (L Arg)和L 硝基精氨酸 (L NNA)慢性干预的影响。方法　采用惊厥剂量的KA(1 0mg·kg- 1 )诱导大鼠癫痫发作 ,以NOS抑制剂L NNA(50mg·kg- 1 )和NO前体L Arg(40mg·kg- 1 )进行干预 ,对大鼠的癫痫发作行为及KA后不同时间点的海马内i NOSmRNA ,通过RT PCR观察其表达。结果　KA可使动物发生时间相关性癫痫发作 ,L NNA预处理后使KA诱导的癫痫发作明显加重 ,而L Arg预处理后使KA诱导的癫痫发作减弱。iNOSmRNA在KA处理后 3h开始有微弱的表达 ,且随着时间的延长逐渐增加 ,2 4h达到最高水平 ,2d及3d时未见表达 ,但 7d时又出现高表达 ;经L NNA预处理的动物 ,KA后 1h其海马结构中未出现iNOSmRNA ,但L Arg预处理后再给予KA后 1h ,可见微弱的iNOSmRNA表达。结论　红藻氨酸给药后一定时间 ,癫痫大鼠海马结构中可出现iNOSmRNA表达 ,L Arg慢性干预也有一定影响     

几种特色蒙药活性成分研究方法比较和进展

表文重点介绍了几种特色蒙药蒙古黄芪、肉苁蓉、锁阳、文冠木方法学的研究进展，以期对进一步开发利用蒙药．研制新的特色药．弘扬民族医药学打下基础。     

主成分分析在中风病系统评价中的应用

The evaluation of complexity system is common issue in the study on TCM, such as analysis the relationship of many symptoms in syndrome and integrated determination of mutual interaction of internal and external pathogenic factors. Analysis of Cronbach a and split-half reliability was conducted on the epidemiologic data of 3909 subjects. Then based on the analysis of relationship between variables and muliti-colinear, combined with systematic analysis of literatures and clinical experience, to the risk factors with evident significance was carried out using SAS software.