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。     

真空敷料装置在暂时性关腹中的应用

目的 探讨一种新的暂时性关腹方法一真空敷料装置的临床应用。方法 用聚丙烯薄膜、手术巾、塑料黏贴膜和引流管等构建真空敷料装置。记录使用此装置患者的各种临床资料和并发症。结果 有13例患者共使用真空包扎15次进行暂时性关腹，其中5次（33．3％）是因为腹内压增高无法获得无张力的筋膜对合，4次（26．7％）是为了再次手术探查，2次（13．3％）是因为损伤控制，4次（26．7％）是上述多个因素的联合。7例（53．8％）患者最终完成腹壁全层对合关闭，5例（38．5％）患者无法直接对合腹壁缺损，最后行创面断层皮片植皮；3例（23．1％）患者出现腹腔内脓肿，无1例出现消化道瘘，无内脏脱出。1例（7．7％）在试图关腹之前死亡，与真空包扎无关。结论 真空包扎可使患者获得直接腹壁肌肉筋膜层关闭，并发症发生率低、易于掌握，是一种较好的暂时性关腹方法。     

医院感染流行病学监测分析

介绍了我院１９９３年７月１日～１９９３年１２月２０日出院的１０３１例病人医院感染病率的监测分析，半年中感染率为８．４％，妇产科疗区发病率高于外科疗区，感染部位以泌尿道、下呼吸道、手术伤口为最多，侵袭性操作及易感因素引起的感染在感染病例中分别占４０．２％和５９．８％。     

Twisted plywood architecture of collagen fibrils in human compact bone osteons

Summary Ultrathin sections of decalcified human compact bone, observed by transmission electron microscopy, reveal that collagen fibrils can be distributed in the form of a superimposed series of nested arcs. This characteristic pattern has never been interpreted in previous works on compact bone structure. We demonstrate, by goniometric observations at the ultrastructural level, that such series of nested arcs are a consequence of the “twisted plywood” architecture of collagen fibrils in the compact bone matrix. In the same specimens, an “orthogonal plywood” disposition of collagen fibrils is also observed; a transition exists between these two types of orders. We show that the “twisted plywood structure” accounts well for certain optical properties of osteons, observed in polarizing microscopy, described as “intermediate osteons.” The particular geometry of collagen fibrils, leading to nested arcs in oblique sections, is analogous to the distribution of molecules in certain liquid crystals (called cholesteric liquid crystals). The principle of a liquid crystalline self-assembly of the collagen matrix in bone is therefore discussed.     

战伤绿脓杆菌感染源及防治研究

本文对云南老山前、后方医院环境及战伤感染标本中绿脓杆菌(简称PA)进行调查,对所分离的333株PA进行血清学分型及药物敏感性测定。结果可看出除炸伤时创口易被泥土中PA污染外,前、后方医院环境也是感染源之一。提示各级医疗单位在战伤救治中对PA的监控十分重要。本文结果直接有益于前、后方医院对战创伤PA的防治。     

高压液相色谱纯化肾综合征出血热病毒血凝素及其性状分析

用吐温８０－乙醚（ＴＥ）法、蔗糖－丙酮（ＳＡ）法、丙酮－乙醚（ＡＥ）法分别从肾综合征出血热病毒（ＨＦＲＳＶ）感染的Ｖｅｒｏ－Ｅ６细胞培养和乳小白鼠脑组织中制备病毒血凝素（ＨＡＮ），定量对比证明其制备效果，结果无明显差异。粗制ＨＡＮ经高压液相色谱（ＥＰＬＣ）纯化，有４个洗脱峰，血凝活性物质存在于峰１。纯化ＨＡＮ在ＳＤＳ－ＰＡＧＥ中呈单一区带，分子量５６．６ＫＤ，ＨＡＮ相对含量７９．６％。纯化ＨＡＮ在蔗糖密度梯度液中有一条１．１５～１．１６ｇ／ｃｍ３的沉淀，粗制ＨＡＮ有３条沉淀。电镜观察纯化ＨＡＮ中为大小相等的球状颗粒。粗制ＨＡＮ的高密度沉淀中可见到病样颗粒。对几种常用消毒剂、氧化剂、去垢剂对ＨＡＮ的灭活作用做了实验对比观察。     

PHA RMA COKINETICS OF CUPRIC－BIS（SALICYLALDEHYDE－2－FURA NTHIOCA RBOXY－HYDRAZONATE） DICHLORIDE（CSFTCH） IN RABBITS

ＰＨＡＲＭＡＣＯＫＩＮＥＴＩＣＳＯＦＣＵＰＲＩＣ－ＢＩＳ（ＳＡＬＩＣＹＬＡＬＤＥＨＹＤＥ－２－ＦＵＲＡＮＴＨＩＯＣＡＲＢＯＸＹ－ＨＹＤＲＡＺＯＮＡＴＥ）ＤＩＣＨＬＯＲＩＤＥ（ＣＳＦＴＣＨ）ＩＮＲＡＢＢＩＴＳ￥ＧａｏＹｕｎｓｈｅｎｇ；ＺｈｕＹｕｙｕｎ（...     

An alkylpolyglucoside surfactant as a prospective pharmaceutical excipient for topical formulations: The influence of oil polarity on the colloidal structure and hydrocortisone in vitro/in vivo permeation

There is a growing need for research into new skin- and environment-friendly surfactants. This paper focuses on a natural surfactant of an alkylpolyglucoside type, which can form both thermotropic and lyotropic liquid-crystalline phases. The aim of this study was to relate some physicochemical properties (characterised by polarisation and transmission electron microscopy, thermal analysis and rheology) of the three formulations based on cetearyl glucoside and cetearyl alcohol, to the results of in vitro and in vivo bioavailability of hydrocortisone (HC). The three formulations contained oils of different polarity (medium chain triglycerides: MG, isopropyl myristate: IPM and light liquid paraffin: LP), respectively. In vitro permeation was followed through the artificial skin constructs (ASC), while the parameters measured in vivo were erythema index: EI (using instrumental human skin blanching assay), transepidermal water loss (TEWL) and stratum corneum hydration (SCH). The vehicles based on cetearyl glucoside and cetearyl alcohol showed a complex colloidal structure of lamellar liquid-crystalline and lamellar gel-crystalline type, depending on oil polarity. Rheological profile of the vehicle was directly related to the in vitro profile of the HC permeation. In vivo results suggested that the vehicle with MG retarded the HC permeation, whereas less polar IPM and non-polar LP enhanced it. It is suggested that the enhancement is achieved either by a direct interaction with lipid lamellae of the SC or indirectly by improving skin hydration.

There were no adverse effects during in vivo study, which indicates a good safety profile of this alkylpolyglucoside surfactant.     

高效液相色谱法检测血中表阿霉素的研究

用ＺｏｒｂａｘＣ－８柱成功地分离了阿霉素、表阿霉素及其代谢产物。在此基础上建立了用阿霉素作内标物定量测定表阿霉素的分析方法，其最低检测限为２ｎｇ／ｍｌ，线性范围１０－３００ｎｇ／ｍｌ。     

高效液相色谱法测定硫酸奈替米星注射液的含量

目的采用高效液相色谱法测定硫酸奈替米星及注射液的含量。方法以μ-Diamonsil—C18为分析柱，流动相为1．5％的磷酸二氢钾-乙睛，流速为1．0ml／min，检测渡长为205nm。含量测定用峰面积外标法。结果硫酸奈替米星在0．1—1．6mg／ml浓度范围内呈现良好线性关系，r=0．9998．平均回收率为99．5％，RSD=0．4％（n=9）。结论本方法操作简便、快速，结果准确可靠，重现性好，均能很好地满足质量控制的要求，为开辟氨基糖苷类抗生素含量测定的仪器提供了一定借鉴。