20分钟快速检测单菌体新方法

长久以来，等待细胞通过自然分裂或其DNA经生化扩增到一定程度以便于检测成为限制我们开发出快速、敏感的单菌体检测方法的重要瓶颈。现在，一支由美国佛罗里达大学物理和分析化学专家谭伟宏（音译）率领的团队开发出的一种新方法，不仅可以在20min内进行单菌体快速检测，同时可以运用在病毒、药物残留、生化武器组分和许多环境污染成分的检测上。     

Brain myo-inositol level is elevated in Ts65Dn mouse and reduced after lithium treatment

The segmental trisomy Ts65Dn mouse is a novel model of Down syndrome (DS). The purpose of this study was to measure brain levels of myo-inositol (ml), N-acetylaspartate (NAA), and other metabolites in Ts65Dn mice using in vivo 1H magnetic resonance spectroscopy (MRS), and to determine whether lithium (Li) treatment alters brain ml level. The ratio of ml over total creatine (Cr), ml/Cr, was significantly elevated (mean change +38%), while NAA/Cr was significantly decreased (mean change -18%) in Ts65Dn mice (n=5) compared with control mice (n= 7). This is consistent with 1H MRS findings in DS human adults. Brain ml/Cr of the entire sample group (n= 12) was reduced (mean change -15%) following Li treatment, supporting the Li-induced ml depletion hypothesis.     

Expression of 5-HT1A receptor mRNA in rat dorsal raphe nucleus and ventrolateral periaqueductal gray neurons after peripheral inflammation

In the present study we observed the expression of 5-hydroxytryptamine (5-HT)1A receptor mRNA in the dorsal raphe nucleus (DRN) and ventrolateral periaqueductal gray (vlPAG) neurons, especially in 5-HT immunoreactive neurons (5-HT-IR), using in situ hybridization (ISH) and double staining with fluorescent ISH (FISH) and immunohistochemical (FIH) techniques. The findings of this study demonstrated that 5-HT1A receptor mRNA was expressed with moderate to high level in the DRN and vlPAG neurons. Following carrageenan inflammation, the expression of 5-HT1A receptor mRNA in the DRN and bilateral vlPAG neurons was significantly increased. The peak occurred at 3-8h followed by a clear decrease at 24 h, which basically corresponded to the time-course of behavioral hyperalgesia. Moderate 5-HT1A receptor mRNA and 5-HT immunoreactive (5-HT-IR) double-labeled cells were observed in the DRN and vlPAG, suggesting that some of 5-HT1A receptors in the DRN and vlPAG may be autoreceptors. Eight hours after carrageenan injection, the number of the double labeled cells was significantly increased. These results suggest that the synthesis of 5-HT1A receptors, including autoreceptors, is increased in the DRN and vlPAG during peripheral inflammation.     

银杏叶提取物的药理药用研究进展

银杏叶提取物(EG b)有效成分为黄酮类、萜内酯类,对动物、人类具有明显的药理活性,是一种药效确切、不良反应较少的天然药物。阐述了EG b的化学成分、药理作用、药用价值及临床应用。     

从我院药品盘点工作的改进浅析医院药品的管理

运用医院电脑信息系统的盘点程序来进行药品盘点工作,使盘点准确率大大提高,为药剂科完成实时库存的管理打下了扎实的基础     

HPLC-ELSD法测定盐酸精氨酸片含量

本文建立一种快速、准确的HPLC-ELSD法测定盐酸精氨酸的含量的方法.色谱柱:Lichrospher100 RP-18;流动相: 0.1%三氟醋酸-乙腈(60:40). 盐酸精氨酸在1.26μg～2.92μg范围内进样量与峰面积的对数具有良好线性关系(r=0.9995);盐酸精氨酸平均回收率为:100.2%,RSD为:0.67%(n=9).本法快速,简便,准确,重现性好.     

国产盐酸舍曲林胶囊和片剂的人体药物动力学及生物等效性

目的研究国产盐酸舍曲林胶囊及片剂的相对生物利用度、药物动力学特征及生物等效性.方法采用随机、开放、3×3拉丁方设计实验,18名男性健康受试者分别单剂量口服含舍曲林50 mg的试验片剂、胶囊及参比制剂.采用HPLC-MS/MS/MS法测定给药后不同时间的血药浓度,计算3者的药物动力学参数及评价其生物等效性.结果 18例健康志愿者口服参比制剂和试验制剂舍曲林胶囊及片剂后,参比制剂中舍曲林的主要药物动力学参数cmax为(10.14±3.43)μg·L-1;tmax为(4.44±1.10)h;AUC0～96为(262.82±100.66)μg·h·L-1;t1/2为(29.19±4.91)h.试验制剂片剂中舍曲林的主要药物动力学参数cmax为(10.16±3.22)μg·L-1;tmax为(4.33±1.85)h;AUC0～96为(269.71±107.47)μg·h·L-1;t1/2为(30.99±6.49)h.试验制剂胶囊中舍曲林的主要药物动力学参数cmax为(10.39±3.59)μg·L-1;tmax为(4.94±1.30)h;AUC0～96为(264.45±112.57)μg·h·L-1;t1/2为(29.68±5.25)h.试验制剂片剂和胶囊分别对参比制剂的相对生物利用度F为(103.4%±18.2%)、(99.8%±13.6%).结论经统计学分析,国产试验制剂胶囊剂和片剂与参比制剂具有生物等效性.     

甘草酸二铵和丹参联合治疗酒精性肝病

目的观察甘草酸二铵、丹参联合治疗酒精性肝病的疗效.方法酒精性肝病患者52例,其中治疗组30例,给予甘草酸二铵、丹参等联合治疗.对照组22例,给予甘草酸二铵治疗,疗程4周.治疗前后观察症状、体征及肝功能指标的变化.结果治疗组总有效率90%(27例);对照组总有效率68.2%(15例),差异有显著性(P＜0.05).两组肝功能指标TBIL、ALT、AST、γ-GT均有明显下降,与治疗前相比有显著差异(P＜0.01).治疗后治疗组ALT、AST下降明显,较对照组有显著差异(P＜0.01).结论甘草酸二铵、丹参联合应用可明显改善酒精性肝病患者症状,减轻肝功能损害,促进肝功能恢复.     

Rhodostomin inhibits thrombin-enhanced adhesion of ROS 17/2.8 cells through the blockade of alphavbeta3 integrin.

Osteosarcoma is a very malignant bone tumor which has a high metastatic potential and usually lead to poor prognosis. The adhesion of tumor cells to the endothelium or extracellular matrix (ECM) is an essential step in the metastatic cascade. We investigated the effect of thrombin on the adhesion activity of the osteosarcoma cell line, ROS 17/2.8. Incubation with the low concentrations of thrombin (0.01-5 U/ml, 5 min to 24 h) elevated the adhesion activity of ROS 17/2.8 to both human umbilical vein endothelial cells (HUVEC) and extracellular matrix, with the peak effect at the concentration of 0.5 U/ml for 30 min at 37 degrees C. The ROS 17/2.8 cells responded to thrombin by a peak effect of increased adhesion to HUVEC (5.5 folds vs. control) and fibronectin (4.8 folds) after thrombin pretreatment (0.5 U/ml, 30 min, 37 degrees C). Pretreatment with monoclonal antibodies against beta3 integrins, including anti-alphavbeta3, 10E5 and 7E3, effectively antagonized the thrombin-enhanced cell adhesion activity, whereas anti-alpha3beta1 and anti-alpha5beta1 did not antagonize the enhanced cell adhesion. Rhodostomin, an Arg-Gly-Asp (RGD)-containing snake venom peptide, and synthetic peptide RGDS also blocked the thrombin-enhanced ROS 17/2.8 cell adhesion. This study demonstrated that thrombin enhanced the cell adhesion of ROS 17/2.8 cells to HUVEC or ECM through an upregulation of beta3 integrins, and rhodostomin was a strong inhibitor on thrombin-enhanced cell adhesion, either to HUVEC or fibronectin substratum.     

丝裂霉素C预防浅表性膀胱癌等离子电切术后复发

目的探讨丝裂霉素C（MMC）预防浅表性膀胱癌等离子电切术（PKRBT）后复发的有效性。方法73例浅袁性膀胱癌病人行PKBRT后即MMC 40mg膀胱内灌注，常规MMC膀胱灌注12月。结果术后6月复发3例（4．1％），12月复发11例（15．1％），20月复发15例（20．5％）。结论MMC膀胱内灌注在PKRBT术后预防复发疗效良好。