A study on various symptoms of chronic hepatitis treated with radix astragali and its regulative effect to levels of serum hormone

Sixty-seven cases of chronic hepatitis were treated with Radix Astragali. After treatment (2-month course), the clinical improvement rate in 38 cases of the Stagnation of the Liver-Qi and Deficiency of the Spleen type was 92.1%, and in 26 cases of the Deficiency of Liver Yin and Kidney Yin type was 88.5%, more effective than in the control group (P<0.05). The regulative effect to the levels of serum hormone was observed in the patients of the Stagnation of the Liver-Qi and Deficiency of the Spleen type treated with this medicine. The results showed that the levels of serum triiodothyronine, estradiol (female) and testosterone (male) were increased after treatment (1.40±1.38 ng/dl, 129.30±1.23 pg/ml and 496.24±1.47 ng/dl). Pre-treatment levels were 1.22±1.49 ng/dl, 104.60±1.45 pg/ml and 398. 17±1.55 ng/dl respectively (P<0.05); however, the level of serum prolactin (2.75±4.46 ng/ml) was lower after treatment than before treatment (3.20±3.82 ng/ml,P<0.05). No obvious changes were observed in the levels of serum follicle stimulating hormone, luteinizing hormone, thyroid stimulating hormone, thyroxine, triiodothyronine uptake ratio and cortisol after treatment.     

大叶牛奶菜孕甾甙成分研究

用硅胶层析及反相硅胶层析法，从大叶牛奶菜（MarsdeniakoiTsiang）抗生育活性的甲醇提取物中分离获得一孕甾四糖甙。经化学反应，波谱分析，酸碱降解及其水解产物的鉴定，确定其结构为12-0-cvnnamyl-dihydrosarcostin-3-0-β-D-glucopyranosyl（l→4）-0-3-0-methyl-6-deoxy-β-D-allopyranosyl(1→4)-0-β-D-oleandropyranosyl(1→4)-0-β-D-cymaropyranoside,命名为大叶牛奶菜甙庚（marsdekoisideG）。经系统文献检索证明其为首次自该植物中分离得到。     

亲电性对醌二甲烷与富电子烯烃的电荷转移聚合

概述了亲电性对醌二甲烷与富电子烯烃电荷转移聚合的最新进展，着重介绍聚合的一般特征、引发机理、链增长机理，以及单体结构、溶剂对聚合反应的影响。     

Albumin recovery enhancement in membrane plasma fractionation using pulsatile flow

In therapeutic plasmapheresis using cascade filtration, it is important to maximize albumin recovery while rejecting as many gamma-globulins as possible. Several membrane fractionation techniques were investigated using fresh bovine and human plasma and cellulose acetate filters (PF 100, AKZO). In dead end mode the sieving coefficients were found to decrease as transmembrane pressure increased. This was due to membrane plugging during the course of filtration after about 20 minutes which lead to a rapid increase in transmembrane pressure. In single pass mode the albumin recovery factor generally remains around 40% since the permeate flux is much less than the inlet flow. When strong pulsations (4 to 6 Hz) were superposed on the inlet plasma flow in single pass mode, the albumin sieving coefficient remained at about 0.95 while the permeate flux was increased by 106%. As a result a recovery factor of more than 80% could be sustained for at least 90 minutes without membrane plugging. Therefore pulsatile flow plasma fractionation seems to be an interesting approach to combine continuous operation with high albumin recovery.     

夜间电子生物阻抗测量装置对阴茎勃起功能障碍的检测

目的 :探讨夜间电子生物阻抗测量装置 (NEVA)在阴茎勃起功能障碍的诊断中的应用价值。方法 :对 4 1例主诉阴茎勃起功能障碍者 (障碍组 ) 19例主诉无勃起功能障碍但有射精障碍者 (无障碍组 )进行NEVA检测。结果 :障碍组夜间试验中的夜间勃起的次数、阴茎勃起的最大体积改变、最长持续时间等客观指标均要差于无障碍组 ,差异有统计学意义 (P <0 .0 1)。结论 :NEVA为非侵入性检测、可鉴别心理性阴茎勃起功能障碍和严重的器质性勃起功能障碍 ,且对勃起功能障碍的定性和定量具有一定的客观性。     

高校科技创新工作的若干问题及对策

我国高等学校的科技队伍不断发展和壮大 ,在我国的科技事业发展中具有举足轻重的地位 ,高等学校的科技创新对推进我国国家创新体系的建设起着越来越重要的作用。但高校科学研究工作中存在一些困难和问题 ,必须采用改革现行管理体制和运行机制等对策予以解决     

去骨瓣减压术治疗大面积脑梗死的短期疗效评价

目的:评价去骨瓣减压术治疗大面积脑梗死的效果。方法:制定入选和排除标准,统一术式,比较术前、术后不同时期的神经功能变化,并对存活病例进行随访(6个月),评价术后3和6个月时的预后评分(GOS)和BarthelIndex(BI)的变化。结果:按入选标准行去骨瓣减压术26例,术后死亡率为30.8%。术前昏迷评分GCS对决定手术时机有指导作用。共随访14例患者,术后3和6个月GOS分别为3.6±0.8和4.0±0.8,与出院时GOS评分比差异有统计学意义。术后3和6个月BI分别为68.9±29.4和77.5±28.3,其中术后6个月BI>60者占85.7%。结论:对保守治疗无效的大面积脑梗死患者,去骨瓣减压术不仅可作为一种“救命”手术,而且多数存活病例恢复较好。合理选择手术适应证、及时把握手术时机以及充分手术减压可能是影响预后的重要因素。     

烤瓷贴面修复20例临床观察

目的评价烤瓷贴面的修复效果。方法选择20例患者制作烤瓷贴面92个。复诊时对烤瓷贴面的边缘适合性,边缘着色及颜色进行评价;同时采用牙龈出血指数和菌斑指数评价治疗前后的牙周状况。观察时间为12～18个月。结果5颗牙烤瓷贴面失败,成功率为95.7%;烤瓷贴面治疗前后牙龈出血指数无显著性差异(P>0.05),治疗后菌斑指数降低(P<0.01)。结论烤瓷贴面具有较好的治疗效果。     

脐血抗—HPCA—2和Tük3标记的CD34阳性细胞的流式细胞仪比较分析

在标记脐血造血祖细胞表面抗原（ＨＰＣＡ），ＣＤ３４中，比较抗－ＨＰＣＡ－２－ＦＩＴＣ和Ｔｋ３（纯抗体）标记的ＣＤ（３４＋）细胞在流式细胞仪分析中的荧光特征及两种单抗标记的ＣＤ（３４＋）细胞与体外培养的粒单细胞集落形成单位（ＣＦＵ－ＧＭ），红系爆发形成单位（ＢＦＵ－Ｅ），和混合集落形成单位（ＣＦＵ－Ｍｉｘ）的相关性。结果发现脐血有核细胞中，抗ＨＰＣＡ－２阳性细胞占１．０５±０．７２％（ｎ＝１３），Ｔｋ３阳性细胞占２．０６±１．２５％（ｎ＝８），差别显著（Ｐ＜０．０５）。每毫升脐血两种抗体标记的细胞分别为９６．５６±５６．６４和２３１．４０±１６３．９３（Ｐ＜０．０５）。尽管ＨＰＣＡ－２阳性细胞与Ｔｋ３阳性细胞数量呈显著正相关（ｒ＝０．８７５，Ｐ＜０．０１），前者与ＣＦＵ－ＧＭ，ＢＦＵＥ，ＣＦＵ－Ｍｉｘ及集落总数ＣＦＵｓ均呈正相关，而后者仅与ＣＦＵ－ＧＭ，ＣＦＵｓ相关。研究提示在检测造血祖细胞时，用抗－ＨＰＣＡ－２－ＦＩＴＣ代替Ｔｋ３可降低假阳性，获得较好的ＯＤ（３４＋）细胞与ＣＦＵ间的线性关系。     

5名电离辐射事故患者外周血T细胞T细胞抗原受体、T细胞分化抗原决定簇－3效应的研究

文中报道了５名事故性急性骨髓型放射病患者照后２．５和３．５年外周血Ｔ淋巴细胞Ｔ细胞受体（ＴＣＲ）基因，ＴＣＲ、Ｔ细胞分化抗原决定簇－３（ＣＤ_３）表达与ＴＣＲ／ＣＤ_３复合物功能的辐射效应．发现５名患者于照后２．５年，２名（５．２Ｇｙ和２．４Ｇｙ，５５岁）于照后３．５年外周血Ｔ细胞应答抗ＣＤ３单抗刺激而增殖的能力尚未完全恢复；经同时用ＩＬ－２和抗ＣＤ_３单抗刺激，增殖能力比单用抗ＣＤ_３单抗刺激有所增强；后２名的外周血ＴＣＲ、ＣＤ_３阳性细胞百分率一直低于正常对照和其他患者；并见一患者出现ＤＮＡ重排杂交带型．本文并从ＴＣＲ／ＣＤ_３在介导Ｔ细胞抗原刺激反应中的作用，电离辐射对ＴＣＲ／ＣＤ_３复合物的影响，后果和意义等方面进行了讨论．