雌激素干预的EPCs移植对糖尿病缺血性脑卒中大鼠的治疗作用

目的 探讨雌激素干预的EPCs移植对糖尿病缺血性脑卒中的治疗作用。方法 制备大鼠糖尿病缺血性脑卒中模型,24 h后通过尾静脉移植经PKH26标记的糖尿病EPCs和雌激素干预的糖尿病EPCs。移植3 d后测定各组大鼠脑缺血体积、大鼠行为学变化、缺血部位血管新生及EPCs的归巢情况。结果 与糖尿病脑缺血大鼠相比,雌激素干预的糖尿病EPCs移植能降低脑缺血体积、改善行为学评分和缺血部位的血管新生及促进EPCs归巢到损伤部位(P<0.05)。结论 雌激素干预的糖尿病EPCs移植,通过促进EPCs归巢和血管新生对糖尿病缺血性脑卒中有较好的治疗作用。     

医院用药经济分析的基本方法

本文简要介绍了医院药品经济分析的基本方法，包括购药分析、处方分析、质量控制和相关文献。     

基于前药构建混合胶束实现紫杉醇/阿霉素共递送

为了达到靶向递送,实现肿瘤的联合治疗,制备两亲性紫杉醇-聚乙二醇前药以及小分子阿霉素前药,两者共同构成混合胶束实现共递送.合成还原敏感性的聚乙二醇-紫杉醇前体药物(mPEG-SS-PTX)和靶向性叶酸修饰的聚乙二醇-紫杉醇前体药物(FA-PEG-SS-PTX).同时合成pH敏感阿霉素-乌头酸酐(CAD)小分子前药,采用...     

Antisense oligonucleotides-induced local blockade of T-bet expression leads to airway inflammation in rats

AIM: To explore whether local blockade of T-box expressed in T cells (T-bet) expression in the lungs could lead to airway inflammation. METHODS: Twenty-four rats were randomly divided into 4 groups: saline group, ovalbumin (OVA)-sensitized group, nonsense group, and the antisense group. The OVA-sensitized rats were sensitized and challenged with OVA, and the rats in the nonsense and antisense groups were subjected to an aerosol delivery of the nonsense and antisense oligonucleotides (AS-ODN) of T-bet (0.1%, w/v). The levels of interferon-gamma (IFN-gamma), interleukin-4 (IL-4), and IL-5 in the bronchoalveolar lavage fluid (BALF) were detected by ELISA, and the mRNA and the protein expression of T-bet and GATA-3 genes were examined by in situ hybridization and Western blot analysis, respectively. RESULTS: The expression of T-bet mRNA and protein in the lungs of the rats in the antisense group were inhibited effectively. The lungs of the rats in the antisense and OVA-sensitized groups showed eosinophil and lymphocyte inflammatory infiltration, and eosinophilia located predominantly around the airways. The number of GATA-3 mRNA-positive cells and the level of GATA-3 protein in the lungs of the rats in the antisense and the OVA-sensitized groups significantly increased. The level of IL-4 and IL-5 in the BALF in the antisense and OVA-sensitized groups were elevated, but the level of IFN-gamma decreased markedly. CONCLUSION: Antisense ODN-induced local blockade of T-bet expression leads to airway inflammation with a selective alteration in patterns of cytokine expression and recruitment of eosinophil cells similar to that in the OVA-sensitized animals.     

HPLC法测定维尔康胶囊中维生素C和维生素B1的含量

目的：应用高效液相色谱法同时测定维尔康胶囊中维生素C和维生素B1的含量。方法：色谱条件：C18柱，0.03mol／L磷酸二氢钾缓冲液（用磷酸调节pH至3．0）-甲醇（99：1）为流动相，检测波长为246nm。结果：该方法的维生素C的回收率为99．7％（RSD=2．2％，n=9）；维生素B，的回收率为100．2％（RSD=0．5%，n=9）。结论：本法简便、灵敏、准确。     

Mohnarin2006——2007年度报告：西北地区细菌耐药监测

目的总结西北地区10家教学医院2006~2007年度临床分离病原菌的耐药状况。方法常规方法培养分离医院内感染病原菌,并应用半自动或全自动细菌鉴定分析仪鉴定到种,药敏试验方法按CLSI规定的标准进行。监测数据按卫生部全国细菌耐药监测(Mohnarin)中心设计方案的要求定期上报。采用WHONET5.4软件进行数据统计分析。结果西北地区10家教学医院共分离病原菌株14608株,其中革兰阴性菌10098株占分离菌的69.13%,革兰阳性菌4091株占分离菌的28.01%,真菌396株占分离菌的2.71%。大肠埃希菌超广谱β-内酰胺酶的产酶率为(1380/2021)68.28%,肺炎克雷伯菌产酶率为(455/1008)45.14%,大肠埃希菌对左氧氟沙星和环丙沙性的耐药率为63.00%~87.50%,铜绿假单胞菌、鲍曼不动杆菌为32.90%~68.40%。革兰阳性球菌中耐甲氧西林的金葡菌的发生率为43.82%,耐甲氧西林的表葡菌的发生率为60.97%。未发现耐万古霉素的葡萄球菌。粪肠球菌对替考拉宁和万古霉素耐药率分别为3.20%、1.50%,屎肠球菌对替考拉宁和万古霉素耐药率分别为5.7%、3.2%。结论碳青霉烯类、哌拉西林/三唑巴坦、阿米卡星和头孢吡肟对医院内感染分离的肠杆菌仍有较好的抗菌活性,大肠杆菌对氟喹诺酮类药物的耐药性越来越高,值得临床重视,应限制该类药物的临床应用范围。非发酵菌对临床常用抗菌药物普遍敏感性降低。耐甲氧西林葡萄球菌和耐万古霉素的屎肠球菌感染是抗菌药物治疗中的难点。临床微生物实验室应加强对产酶菌和多重耐药菌的监测,为临床正确合理使用抗菌药物提供依据。     

茯苓、桂枝、白术和甘草配方颗粒质量比较

比较了不同厂家生产的茯苓、桂枝、白术和甘草配方颗粒。主要通过外观性状、可溶性及其标示规格、含量测定、指纹图谱等方面进行比较研究。结果表明不同企业生产的配方颗粒的外观性状、有效成分含量和指纹图谱均存在较大差异,亟需建立统一的质量标准。     

高效液相色谱法测定桂枝中3种有效成分的含量

目的:建立HPLC法测定桂枝中桂皮醛、栓皮酸和邻甲氧基栓皮醛的含量。方法:采用ODS色谱柱(150mm×4.6mm,5μm),以甲醇-水-冰乙酸(45:55:0.05)为流动相,流速为0.8 mL·min~(-1),紫外检测波长为280 nm。结果:栓皮醛、桂皮酸和邻甲氧基桂皮醛的线性范围(n=5)分别为0.125～2μg(r=0.999 8),0.003 2～2 μg(r=0.999 9),0.012 5～0.2μg(r=0.999 7),平均回收率(n=9)分别为99.3％,102.8％,98.9％。提取方法为甲醇冷浸12h。结论:本方法简便、准确,可为评价不同产地的桂枝质量提供依据。     

用LC-MS法测定人血浆中顺式阿曲库铵的浓度

目的 建立高效液相色谱串联质谱方法（LC-MS）测定人血浆中顺式阿曲库铵的浓度,并应用于临床治疗药物监测。方法 采用盐酸普罗帕酮同位素内标,样品经2%甲酸水和含内标的乙腈溶液沉淀蛋白处理。HPLC色谱柱为Agilent SB-C₁₈,柱温35 ℃,流速0.3 ml/min,流动相为0.1%甲酸水和0.1%甲酸乙腈溶液,梯度洗脱。质谱检测方式为ESI正离子模式,MRM扫描,监测阿曲库铵m/z 464.6~358.4,盐酸普罗帕酮（内标）m/z 342.2~116.2。结果 人血浆中顺式阿曲库铵在该条件下分离良好,在2~500 ng/ml浓度范围内线性关系良好（r=0.996 5）,定量下限为2 ng/ml。方法日内精密度RSD<16.0%;日间精密度RSD<6.0%。平均回收率为97.63%~111.93%;血浆样品室温放置4 h,-80 ℃放置14 d,处理后室温放置24 h,稳定性良好。结论 本方法简便、准确、快速、稳定,适用于顺式阿曲库铵的血药浓度测定。     

Synthesis and antitumor activity evaluation of lamiridosin A derivatives

A series of lamiridosin A derivatives were synthesized through simple procedures. Their antitumor activities were evaluated against EC9706, MGC803, and B16 cell lines in vitro. Several compounds showed potent antitumor activity, especially compound 10, with IC₅₀ value of 2.36 μmol/L against MGC803 cell lines, is more potent than marketed positive drug 5-fluorouridine (5-FU).