Studies on constituents of Korean basidiomycetes (L)

To find antitumor metabolites in Korean basidiomycetes, the shake-cultured mycelia of eight of the higher fungi were extracted with hot water and the extracts, after being partially purified, were subjected toin vivo antitumor test. When administeredi.p. at the dose of 30mg/kg/day for ten consecutive days into the female ICR mice, which had been implanted with 1×10⁵ cells of sarcoma 180 twenty-four hours before the first injection, the extracts ofAgaricus campestris, Lyophyllum decastes, Lyophyllum ulmarium, Armillaria tabescence andCalvatia exipulitormis respectively showed inhibition ratios of 64.1%, 65.4%, 60.0%, 53.0% and 49.3%. These five species were selected for further study, whereas the extracts ofPhallus impudicus, Coprinus comatus andPholiota squarrosa which showed the inhibition ratios of 31.2%, 33.5% and 19.0% were discontinued.     

人和兔雪旺氏细胞的体外培养及形态学观察和生物特性研究

雪旺氏细胞(Schwann cell,SC)在神经再生过程中起着重要作用。我们取人胚及兔之坐骨神经,采用“植块多次移出法”培养出纯净度达99％的人和兔的SC。对培养的SC进行了冻存和复苏处理,复苏后的细胞可保持原有的生长特性。     

14例大疱性表皮坏死松解型药疹治疗体会

报告14例大疱性表皮坏死松解型药疹的治疗。以磺胺类药和解热镇痛药引起者居多,各4例。皮损面积按九分法计算,皮损面积80％以上者9例,80％以上者5例,治愈9例,死亡5例,我们认为早期使用足够剂量皮质激素类药物是有效措施。病程中注意防治感染,给予足够的液体以防止水电解质失平衡,局部治疗使用本院中药“五黄油”。     

家兔延髓吻端腹外侧区在“人中”穴加压效应中的作用

延髓吻端腹外测区(Rostral ventrolateral medulla,RVL)微量注射红藻氨酸(Kainic acid,KA)前,分别用弱、强电刺激“人中”穴时可引起动脉血压(BP)显著升高,心率(HR)明显增快。一侧或双侧RVL注射KA后,再用弱、强电刺激“人中”穴时,BP、HR的反应基本消失。结果表明,RVL在“人中”穴加压效应中起关键性作用。     

HIV-1 infected mononuclear phagocyte secretory products affect neuronal physiology leading to cellular demise: relevance for HIV-1-associated dementia

Viral and cellular products from HIV-1-infected and/or immune competent mononuclear phagocytes (MP) (brain macrophages and microglia) affect neuronal function during HIV-1-associated dementia (HAD). Neurotoxic MP factors include, but are not limited to, pro-inflammatory cytokines, chemokines, platelet activating factor, arachidonic acid and its metabolites, nitric oxide, progeny virions and viral structural and regulatory proteins. The mechanisms for immune-mediated neural injury in HAD, only now, are being unraveled. In this regard, we reviewed the current knowledge of how postmitotic neurons, which can neither divide nor be replaced, are damaged by MP secretory activities. Linking neuronal function with brain MP activation was made possible by placing viral and/or immune products onto neurons and measuring cell signaling events or through ex vivo electrophysiological tests on MP-treated brain slices. Such linkages are shown, in this report, by select demonstrations of MP factors which cause neuronal dysfunction in HAD.     

喉咽灵口服液的体外抗菌作用

目的：探讨喉咽灵口服液的体外抗菌作用。方法：为临床分离细菌为受试菌，采用连续倍比稀释法，观察喉咽灵口服液的最低抑菌浓度和最低杀菌浓度。结果：喉咽灵口服液对不同细菌的最小抑菌浓度是成品浓度64－128倍，最小杀菌浓度是成品浓度32－64倍。结论：喉咽灵口服液对所有受试菌均有不同程度的抑菌和杀菌作用，且抗菌谱广，抗菌作用强。     

多中心平行对照比较布洛芬与安乃近的疗效和安全性

目的：比较布洛芬与安乃近的疗效和安全性。方法：本试验为双盲双模拟，单剂量，多中心，随机，平行对照试验设计，210例6月到12周岁发热儿童被随机分入布洛芬治疗组和安乃近治疗组，观察其退热镇痛疗效和不良反应。结果：与安乃近组相比，布洛芬组的总体疗效好(99．3％)，退热起效时间早，退热持续时间长，P值均小于0．05。试验过程中没有发现不良反应。结论：布洛芬混悬剂用于儿童发热安全高效，应为儿科急诊临床应用的较好选择。     

小剂量尿激酶联合低分子肝素治疗不稳定心绞痛的疗效观察

目的针对不稳定型心绞痛(UA)的发病机理,比较小剂量尿激酶(UK)联合低分子肝素(LMWH)与常规方法联合LMWH治疗UA的疗效,以探讨治疗UA的合理方案。方法采用随机分组,对照小剂量UK联合LMWH组及常规治疗联合LMWH组的疗效。结果采用小剂量UK联合LM-WH组比常规治疗联合LMWH组能更快控制症状(P<0.05),无明显副作用,近期疗效确切,但两组的有效率差异无显著意义(P>0.05),故仍是一种价-效比适合的方案。结论在目前介入疗法普及率有限的情况下,在基层医院尤其适用,并为有条件的患者赢得时间。     

反相高效液相色谱法测定血浆中多奈哌齐浓度

 目的建立反相高效液相色谱法测定人血浆中多奈哌齐浓度。方法采用美国Waters公司680型高效液相色谱仪,486紫外可变波长检测器,YMC-PackODS(150mm×3.9mm,5μm)色谱柱，柱温62℃，以CH-3OH-0.01mol·L^-1NH4H2PO4=65∶35(pH7.50)为流动相，甲泼尼龙做内标，在314nm波长处检测。结果标准曲线线性范围1.00～20.00μg·L^-1；萃取回收率71.6%～76.0%；加样回收率99.8%～108.9%；日内RSD为2.7%～10.3%，日间RSD为1.8%～9.9%。结论本方法快速、灵敏、准确、简便，可用于多奈哌齐血药浓度测定和药动学及生物利用度研究。     

石菖蒲配伍冰片对缺血再灌注脑损伤大鼠内皮素的影响

目的：探讨石菖蒲配伍冰片对大鼠抉血再灌注脑损伤内皮素的影响。方法：大鼠灌胃给药7d，造成脑缺血再灌注损伤模型，采用放射免疫法制定血浆和脑组织内皮素含量。结果：石菖蒲配伍冰片高、中剂量组脑组织内皮素含量明显下降，并显量效关系。结论：石菖蒲配伍冰片能够降低脑缺血再灌注大鼠脑组织中内皮素含量，发挥护脑醒脑之功效。