老年人鼻出血38例分析

鼻出血是病理条件下人体最多见的出血[1],是耳鼻喉科最常见的急症,老年人常患高血压、动脉硬化及伴各个器官不同程度的功能衰退,而且多数患者恐惧死亡引起精神紧张,了解老年人生理及心理特点,提高防范,快速有效施治非常必要,现将我院2004年1月～2006年12月诊治的严重老年人鼻出血38例总结如下。     

2007年1～11月全国医药行业经济运行情况分析

通过参考2007年1～11月医药行业统计数据，对全国医药行业经济运行情况进行了分析。结果显示，全国医药行业生产、销售保持快速增长，但产销率下降，出口增速减缓。虽然成本费用在提升，但经济效益出现了大幅度提升。     

"心希望工程"为社区群众带来佳音大型冠心病社区健康干预全面启动

冠心病在社区中是老年人群最常见的慢性疾病之一,如何来采取行动,以减慢和抑制这一慢性病上升的趋势已成为当务之急. 由中国医师协会和上海和黄药业共同发起的"心希望工程",自2007年3月正式启动以来,已在北京、上海以及浙江、江苏、广东、辽宁、山东等地的大、中城市取得了良好的社会反响.     

上医股份以最快的速度送出抗震救灾急救药品

5月12日,四川省汶川地区发生强烈地震以后,作为国家战备药品储备基地、军队战备药材代储企业的上海市医药股份有限公司,在国家重大突发事件面前,表现出高度的社会责任感,迅速启动了药品应急供应绿色通道,截至5月13日下午4点,已经送出第一批急救药品887件,并向上海市红十字会捐赠急救药品(价值人民币87.48万元).     

"入籍的中国女婿"——马海德大夫两三事

乔治·海德姆有了中国名儿 乔治·海德姆1910年9月生于美国纽约州水牛城一个阿拉伯移民家庭,祖籍黎巴嫩.他的父亲是个工人.乔治·海德姆靠奖学金资助完成了学业.1933年,23岁的他毕业于瑞士日内瓦医科大学,并获博士学位.受时代的影响,他毕业后就来到中国,结识了宋庆龄等人,因此得以在1936年和斯诺一起来到陕北.     

一动,一热,一冷,一烤霍英东勇斗癌魔4法宝

杰出的社会活动家、著名爱国人士、香港知名实业家、全国政协副主席霍英东先生于2006年10月28日在北京逝世,享年83岁.霍英东先生生前与癌症斗争了23年多,他的精神值得大家学习.霍英东先生是香港著名的大企业家,他热爱祖国,乐善好施,经常慷慨捐资救灾或为国家、社会、民众办好事和实事.     

丙酮酸对糖尿病大鼠晶状体氧化损伤与能量代谢的作用

目的:探讨丙酮酸对大鼠糖尿病性白内障的抑制作用.方法:Wistar大鼠120只,随机分为对照组、模型组及治疗组3组.模型组、治疗组应用链脲佐茵(STZ)诱发糖尿病.治疗组饲料及饮水中添加2%丙酮酸钠.在实验4、8、12周观察3组大鼠晶状体组织中GSH、MDA以及ATP的变化.结果:模型组与对照组比较,晶状体组织中GSH及ATP含量明显下降,MAD水平升高.而治疗组上述指标有不同程度改善.结论:丙酮酸减轻氧化应激反应,改善晶状体的能量代谢,抑制糖尿病性白内障的发生.     

抗震救灾捐赠药品的科学管理

2008年5月12日汶川发生8.0级大地震,引起了全世界的注意,也牵动了祖国各地人民的心.在地震发生后,祖国各地的企事业单位和个人通过各种形式表现自己的关注,很多制药企业通过捐赠药品的方式表达自己的爱心.作为四川省急救中心专门负责捐赠药品的部门,我们在具体工作中总结了一些经验,也发现了一些问题,在此提出,供参考和借鉴.     

环孢素A眼膜研制

目的：研制环孢素A眼膜的给药新剂型，考察其稳定性、刺激性，为进一步开发眼膜提供经验。方法：以聚乙烯醇，羧甲基纤维素钠为骨架，制备环孢素A眼膜。结果：制剂稳定，工艺简单，刺激性小，使用方便。结论：环孢素A缓释眼膜是一种良好的新剂型，值得开发应用。     

川芎DNA提取方法的研究

目的 以伞形科蒿本属植物川芎Ligusticum chuanxiong Hort.叶为材料,研究川芎DNA的提取方法 .方法 分别采取CTAB法、高盐低pH法、木本植物DNA提取法、改良高盐低pH法提取基因组DNA,并对4种方法进行了改进.通过0.9%琼脂糖凝胶电泳和RAPD两种方法检测所提取的DNA样品.结果 比较DNA产量、质量等,确定了木本植物DNA提取法最佳.结论 木本植物DNA提取法为最佳方法.     

Efficacy of gut lavage,hemodialysis, and hemoperfusion in the therapy of paraquat or diquat intoxication

Clinical and in vitro investigations were carried out to test the efficacy of gut lavage, hemodialysis, and hemoperfusion in the treatment of poisoning with paraquat or diquat. In a patient suffering from diquat intoxication 130 times more diquat was removed by gut lavage 30 h after ingestion than was removed by complete aspiration of the gastric contents.Determination of in vitro clearances for paraquat and diquat by hemodialysis showed that, at serum concentrations of 1–2 ppm, such as are frequently encountered in poisoning in man, toxicologically relevant quantities of herbicide cannot be removed from the body. At a concentration of 20 ppm, on the other hand, hemodialysis proved to be effective, the clearance being 70 ml/min at a blood flow rate of 100 ml/min. The efficacy of hemoperfusion with coated activated charcoal was on the whole better. Especially at concentrations around 1–2 ppm, the clearance values for hemoperfusion were some 5–7 times higher than those for hemodialysis.In a patient suffering from paraquat poisoning, both hemodialysis as well as hemoperfusion were carried out. The in vitro results could be confirmed: At serum concentrations of paraquat less than 1 ppm no clearance could be obtained by hemodialysis while by hemoperfusion with activated charcoal quite high clearance values were measured and the serum level dropped down to zero.

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Zusammenfassung Klinische Untersuchungen und Laboratoriumsversuche wurden durchgeführt, um die Wirksamkeit von Darmspülung, Hämodialyse und Hämoperfusion bei Paraquat- und Deiquat-Vergiftungen zu prüfen.Bei einem Patienten wurde 30 Std nach Deiquat-Aufnahme durch Darmspülung 130mal mehr Deiquat entfernt als durch vollständige Aspiration des Mageninhaltes. In vitro-Versuche ergaben, daß bei Blutserumkonzentrationen von 1–2 ppm, die bei Vergiftungen oft gemessen werden, durch Hämodialyse keine toxikologisch relevanten Paraquat- oder Deiquat-Mengen entfernt werden können. Dagegen erwies sich die Hämodialyse bei 20 ppm und einer Blutumlaufgeschwindigkeit von 100 ml/min mit einer Clearance von 70 ml/min als wirksam. Die Hämoperfusion mit beschicheter Aktivkohle war in diesen Versuchen aber eindeutig überlegen, denn insbesondere bei Konzentrationen um 1–2 ppm waren die Clearance-Werte 5–7mal höher als bei der Hämodialyse.Die in vitro-Ergebnisse wurden bei einem Patienten mit einer Paraquat-Vergiftung bestätigt: Bei Konzentrationen unter 1 ppm war die Hämodialyse wirkungslos, während durch Hämoperfusion relativ hohe Clearance-Werte erreicht wurden, so daß der Serumspiegel rasch unter die Nachweisgrenze abfiel.

     

In vitro studies on sterically stabilized liposomes (SL) as enzyme carriers in organophosphorus (OP) antagonism

This study describes a new approach for organophosphorous (OP) antidotal treatment by encapsulating an OP hydrolyzing enzyme, OPA anhydrolase (OPAA), within sterically stabilized liposomes. The recombinant OPAA enzyme was derived from Alteromonas strain JD6. It has broad substrate specificity to a wide range of OP compounds: DFP and the nerve agents, soman and sarin. Liposomes encapsulating OPAA (SL)* were made by mechanical dispersion method. Hydrolysis of DFP by (SL)* was measured by following an increase of fluoride ion concentration using a fluoride ion selective electrode. OPAA entrapped in the carrier liposomes rapidly hydrolyze DFP, with the rate of DFP hydrolysis directly proportional to the amount of (SL)* added to the solution. Liposomal carriers containing no enzyme did not hydrolyze DFP. The reaction was linear and the rate of hydrolysis was first order in the substrate. This enzyme carrier system serves as a biodegradable protective environment for the recombinant OP-metabolizing enzyme, OPAA, resulting in prolongation of enzymatic concentration in the body. These studies suggest that the protection of OP intoxication can be strikingly enhanced by adding OPAA encapsulated within (SL)* to pralidoxime and atropine.     

Steroidal sapogenin contents in some domestic plants

In order to find out the values of the steroid resources for the future use. the compositions and contents of steroidal sapogenins from 13 domestic plants have been investigated. As a result,Dioscorea nipponica, D. quinqueloba andSmilax china were found to have large amount of diosgenin. And pennogenin inTrillium kamtschaticum andParis verticillata, yuccagenin inAllium fistulosum, hecogenin inAgave americana and neochlorogenin inSolanum nigum were appeared to be major steroidal sapogenins.     

Synthesis,Cytotoxicity and Antileishmanial Activity of Some N-(2-(indol-3-yl)ethyl)-7-chloroquinolin-4-amines

We report herein the condensation of 4,7-dichloroquinoline (1) with tryptamine (2) and D-tryptophan methyl ester (3) . Hydrolysis of the methyl ester adduct (5) yielded the free acid (6) . The compounds were evaluated in vitro for activity against four different species of Leishmania promastigote forms and for cytotoxic activity against Kb and Vero cells. Compound (5) showed good activity against the Leishmania species tested, while all three compounds displayed moderate activity in both Kb and Vero cells.     

Aquatic Insects and Trace Metals: Bioavailability,Bioaccumulation, and Toxicity

Abstract

The uptake of metals from food and water sources by insects is thought to be additive. For a given metal, the proportions taken up from water and food will depend both on the bioavailable concentration of the metal associated with each source and the mechanism and rate by which the metal enters the insect. Attempts to correlate insect trace metal concentrations with the trophic level of insects should be made with a knowledge of the feeding relationships of the individual taxa concerned. Pathways for the uptake of essential metals, such as copper and zinc, exist at the cellular level, and other nonessential metals, such as cadmium, also appear to enter via these routes. Within cells, trace metals can be bound to proteins or stored in granules. The internal distribution of metals among body tissues is very heterogeneous, and distribution patterns tend to be both metal and taxon specific. Trace metals associated with insects can be both bound on the surface of their chitinous exoskeleton and incorporated into body tissues. The quantities of trace meals accumulated by an individual reflect the net balance between the rate of metal influx from both dissolved and particulate sources and the rate of metal efflux from the organism. The toxicity of metals has been demonstrated at all levels of biological organization: cell, tissue, individual, population, and community. Much of the literature pertaining to the toxic effects of metals on aquatic insects is based on laboratory observations and, as such, it is difficult to extrapolate the data to insects in nature. The few experimental studies in nature suggest that trace metal contaminants can affect both the distribution and the abundance of aquatic insects. Insects have a largely unexploited potential as biomonitors of metal contamination in nature. A better understanding of the physico-chemical and biological mechanisms mediating trace metal bioavailability and exchange will facilitate the development of general predictive models relating trace metal concentrations in insects to those in their environment. Such models will facilitate the use of insects as contaminant biomonitors.