Changes in the content of Met-enkephalin in different brain structures during the development of immune response

Changes in the content of the opiate peptide Met-enkephalin at the early stages of immune response are studied in different structures of rats brain 20 min and 24 h after immunization with sheep erythrocytes. Translated fromByulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 123, No. 2, pp. 170–172, February, 1997     

血康口服液与他莫昔芬联合治疗免疫性血小板减少性紫癜疗效观察

联合应用血康口服液和他莫昔芬治疗成人免疫性血小板减少性紫癜(ITP)20例。疗程超过2月。15例患者的血小板(BPC)计数明显上升,有效率为75％(15/20),对于激素治疗无效者,仍有良效。对月经过多者和不适合应用激素者尤为适应。两药合用无明显副作用。治疗起效时间较快,平均13天。疗效持续时间较长,长者已达一年以上。     

Diving physiology and pathophysiology

Summary. Divers have worked at 500 m depth in the sea and have reached 700 m in simulated chamber dives. A prerequisite for this has been extensive physiological studies of the body's reactions to pressure and pressure changes. This paper reviews such physiological and pathophysiological studies with emphasis on recent developments.     

Indirect detection of anti-acetylcholinesterase compounds in microcolumn liquid chromatography using packed bed reactor with immobilized human red blood cell acetylcholinesterase and choline oxidase

The inhibiting compounds were separated by micro-column liquid chromatography in the mobile phase containing the natural substrate acetylcholine. A home-made packed bed microbioreactor system containing immobilized enzyme acetylcholinesterase (ACHE) in human red blood cell membrane and choline oxidase (CHO) from alcaligenes was used for the post-column conversion of acetylcholine to hydrogen peroxide which was detected by an electrochemical detector. The inhibition effect of the solutes caused a decrease in the acetylcholinesterase activity, a decrease in the formation of hydrogen peroxide and also a decrease in the response corresponding to the concentration of the solutes. The rate of the enzyme regeneration was also recorded. The micro-system was compared with a conventional LC system comprising commercially prepared enzyme reactor. The stability of the enzymes is at least 3 weeks at ambient temperature. The limit of detection depends on biological activity of inhibition and for galanthamine was 1 pmol.     

一种含胆甾醇介晶基团的侧链液晶高分子的合成

以２，４－二异氰酸甲苯酯（２，４—ＴＤＩ）、胆甾醇、丙烯酸β－羟丙酯为原料，合成了含胆甾醇介品基团的侧链液晶高分子、并用ＮＭＲ、ＩＲ和元素分析方法对其结构进行了鉴定。聚合物的相转变温度和形态织构用ＤＳＣ、Ｘ－射线衍射和偏光显微镜进行了测定和观察。     

Pharmacokinetics of intravenously administered sodium dichloroacetate in rabbits

ＰｈａｒｍａｃｏｋｉｎｅｔｉｃｓｏｆｉｎｔｒａｖｅｎｏｕｓｌｙａｄｍｉｎｉｓｔｅｒｅｄｓｏｄｉｕｍｄｉｃｈｌｏｒｏａｃｅｔａｔｅｉｎｒａｂｂｉｔｓＧｕＢｉｎ（顾斌）；ＳｏｎｇＬｉｎｇ（宋岭）；ＪｉａｎｇＹｏｎｇｐｅｉ（蒋永培）；ＷｅｎＡｉｄｏｎｇ（文...     

人体中氧氟沙星的立体选择性代谢

５名健康志愿者日服单剂３００ｍｇ氧氟沙星［（±）－Ｏｆ１］后，采用立体选择性的ＲＰ－ＨＰＬＣ手性流动相添加剂法测定尿中Ｓ－（－）－Ｏｆ１和Ｒ－（＋）－Ｏｆ１浓度结果显示Ｏｆ１在人体内呈现立体选择性代谢。尿中排泄的Ｓ－（－）－Ｏｆ１／Ｒ－（＋）－Ｏｆ１之比随时间变化。服药后２ｈＳ／Ｒ是０．８７５，２４ｈ增加到１．１５０．Ｓ－（－）－Ｏｆ１的消除半衰期（ｔ１／２）是４．５７ｈ；消除速率常数（ｋ）是０．１５４ｈ；药时曲线下的面积（ＡＵＣ）为１．１７ｍｇ·ｈ－１．ｍＬ－１；Ｒ－（＋）－Ｏｆ１的ｔ１／２为４．１８ｈ，ｋ为０．１６８ｈ－１，ＡＵＣ是１．７８ｍｇ·ｈ－１·ｍＬ－１；经配对ｔ检验这三对参数间有显著性差异，Ｐ值分别小于０．０１，０．００１和０．００５．因此两对映体在人体内呈现立体选择性处置     

导向喷动流化床生物质快速裂解制液体燃料

在冷模试验得到的优化的结构参数基础上，建立了一套生物质最大处理量为5kg／h的导向管喷动流化床生物质裂解反应器。反应在常压和440～520℃进行，以木屑为生物质原料，二氧化碳和氮气为喷动气或流化气，沙子为流化介质。结果表明该喷动流化床反应器可用于生物质的快速裂解。在400～480℃，液体产率随温度增加而上升，高于480℃时，二次反应的加剧又导致液体产品产率下降。固体和气体的产率则随温度的升高而减少。喷动气和流化气流量的增加均强化了反应器内的传热，并使生物质初始裂解产物的停留时间减少，二次反应进行程度减弱。在适当的裂解条件下液体产率可达73．2％，此时气体和焦的产率分别为12．8％和14．0％。所得液体产品为单一相液体，含水约30％，可用于燃烧。与流化床相比，喷动流化床作为生物质快速裂解反应器可明显提高液体产率。     

Double layer capacitance and a microscopic structure of electrified liquid–liquid interfaces

We develop a theory of the double layer at electrolyte–electrolyte interfaces taking in to account the microscopic structure of the interfacial region. This includes a “mixed boundary layer” where the overlapping of two space-charge regions occurs, and the effects of ion association and adsorption at the interface. Theoretical results are in good agreement with experimental data obtained for various organic solvents and electrolytes. The theory suggests a framework for the treatment of the capacitance data and establishes a relationship between experimental results and the microscopic structure of interfaces between two immiscible electrolyte solutions (ITIES).     

急性脑出血患者血清谷氨酸动态变化分析

目的通过观察脑出血（intracerebral hemorrhage，ICH）患者血清中谷氨酸的动态变化来进一步评价谷氨酸对脑出血的作用。方法选择符合条件的30例急性高血压脑实质出血患者，给予神经内科脑出血常规治疗，采用高效液相色谱法检测起病后2d内、5．6d、8-9d和15．16d的血清谷氨酸浓度，同步进行神经功能评定，同时于发病后1．3d、d5-6d及d15．16行头部CT检查了解血肿体积大小。结果脑出血患者血中谷氨酸浓度与血肿体积及神经功能缺损评分之间呈正的直线相关。经治疗后，所有病例谷氨酸水平迅速下降，在5-6d和8—9d下降速度更加明显。结论谷氨酸可能参与了自发性脑出血患者的急性期脑损伤作用。