抗抑郁剂治疗幽门螺杆菌阳性的慢性胃炎的临床对照分析

目的探讨抗抑郁剂对幽门螺杆菌阳性的慢性胃炎的治疗作用。方法将56例幽门螺杆菌阳性的慢性胃炎分成A、B两组,A组30例予三联治疗,B组26例予抗抑郁剂（米氮平或帕罗西汀）治疗,对A、B两组治疗前与治疗6周时汉密顿抑郁量表（HAMD）总分、不良反应量表（TESS）、白细胞介素-6（IL-6）、肿瘤坏死因子（TNF-α）浓度及治疗6周后幽门螺杆菌的未愈率进行测定、对照。结果两组治疗后HAMD总分、TESS、IL-6、TNF-α均提示差异有显著性,而幽门螺杆菌阳性的慢性胃炎的幽门螺杆菌未愈率两组比较差异无显著性。结论抗抑郁剂可能是通过改变患者的免疫功能而抑制幽门螺杆菌的生存,可以作为幽门螺杆菌阳性的慢性胃炎有效治疗途径之一。     

博莱霉素脂质体凝胶的制备和体外透皮性比较

目的：研制博莱霉素（BLM）脂质体凝胶,并对其皮肤靶向性进行体外评价。方法：采用逆相蒸发-冻融法制备BLM脂质体,再用卡渡姆940为基质制成BLM脂质体凝胶;以离心法测定BLM脂质体的包封率;以体外透皮渗透释药法,比较BLM脂质体凝胶与BLM普通凝胶的透过作用。结果：BLM脂质体平均粒径为（885．20±12．08）nm,平均包封率为（66．80±1．38）％。在24h内,BLM脂质体凝胶累积透过量（Q）及稳态透皮速率（J）与BLM普通脂质体相比,均明显提高,而在皮肤中的滞留药量也显著提高（P〈0．05）。结论：BLM脂质体凝胶在体外可显著增加BLM的透皮吸收,增加皮肤中的滞留量,值得进一步研究。     

N-乙酰基L-半胱氨酸促进胰岛素经TR146细胞层渗透转运的研究

目的：研究促吸收剂肚乙酰基-L-半胱氨酸（NAC）对胰岛素经TR146口腔上皮细胞层渗透转运的影响。方法：应用TR146细胞系,采用Millicell插入式细胞培养皿,建立口腔上皮细胞渗透转运模型,研究1．25％、2．5％、5％、10％各浓度NAC对胰岛素经口腔上皮渗透转运的影响,计算相应的胰岛素表观渗透系数Papp和NAC促渗比ER,并用MTF方法研究不同浓度NAC对细胞活力的影响。结果：5％、10％NAC可显著促进胰岛素经TR146口腔上皮细胞层的渗透转运,其Papp分别为4．92±0．62、5．04±0．52（×10^-6cm／S,n=5）,ER值分别为5．22±0．88、6．05±0．18（n=5）,明显高于对照组（P〈0．05）;10％NAC组细胞相对酶活性显著下降,而其余各组与对照组相比均无统计学差异。结论：5％NAC能显著促进胰岛素经TR146口腔上皮细胞层的渗透转运,且对细胞活力影响较小,可作为一种安全有效的促吸收剂。     

Skin Solubility Determines Maximum Transepidermal Flux for Similar Size Molecules

Purpose  The maximum flux of solutes penetrating the epidermis has been known to depend predominantly on solute molecular weight. Here we sought to establish the mechanistic dependence of maximum flux on other solute physicochemical parameters. Methods  Maximum fluxes, stratum corneum solubilities and estimated diffusivities through human epidermis were therefore determined for 10 phenols with similar molecular weights and hydrogen bonding but varying in lipophilicity. Results  Maximum flux and stratum corneum solubilities of the phenolic compounds both showed a bilinear dependence on octanol-water partition coefficient (P), with solutes having a maximum solubility in the stratum corneum when 2.7<log P<3.1. In contrast, lag times and diffusivities were relatively independent of P. Stratum corneum-water partition coefficients and epidermal permeability coefficients were consistent with previously reported data. Conclusion  A key finding is that the convex dependence of maximum flux on lipophilicity arises primarily from variations in stratum corneum solubility, and not from diffusional or partitioning barrier effects at the stratum corneum–viable epidermis interface for the more lipophilic phenols. Our data support a solute structure-skin transport model for aqueous solutions in which permeation rates depend on both partitioning and diffusivity: partitioning is related to P, and diffusivity to solute size and hydrogen bonding. (199 words)     

Reservoir Based Fentanyl Transdermal Drug Delivery Systems: Effect of Patch Age on Drug Release and Skin Permeation

Purpose  To understand and evaluate the stability and skin permeation profiles of fentanyl reservoir systems as a function of patch age. Methods  Drug release and skin permeation studies were performed using a modified USP apparatus 5 with a novel sample preparation technique. Results  The amount of fentanyl present in the EVA/adhesive layer (EAL) increased from about 17% of label claim (LC) at 5 months to 25% LC at 22 months. The increase in the drug concentration was mainly observed in the peripheral EAL. Simultaneously, the alcohol content of the patch decreased as a function of patch age. A significant effect of patch age on the drug content in the EAL and the drug release from the system was observed; however, skin permeation studies did not indicate an increase in drug delivery rate. Conclusions  Novel sample preparation technique with USP Apparatus 5 allowed determination of in vitro skin permeation rates for fentanyl transdermal patches with different designs. Permeation rates with cadaver skin as substrate were found not to change with patch age despite changing drug concentration in the EAL.     

努力做好国家军用标准报批工作确保标准质量

简要总结了国家军用标准编写文本不规范现象和报批工作中出现的一些主要问题,归纳和分析了出现问题的原因．并对提高标准编制和报批工作质量提出了加强标准项目立项论证;强化编制工作管理,积极开展管理跟踪,及时进行技术指导,实现计划目标管理;严把标准审查会评审关;严格报批文件质量检查等相应的对策建议。     

A new generalization of Weibull distribution with application to a breast cancer data set

In this article, we propose a new generalization of the Weibull distribution, which incorporates the exponentiated Weibull distribution introduced by Mudholkar and Srivastava (IEEE Trans. Reliab. 1993; 42 :299–302) as a special case. We refer to the new family of distributions as the beta‐Weibull distribution. We investigate the potential usefulness of the beta‐Weibull distribution for modeling censored survival data from biomedical studies. Several other generalizations of the standard two‐parameter Weibull distribution are compared with regards to maximum likelihood inference of the cumulative incidence function, under the setting of competing risks. These Weibull‐based parametric models are fit to a breast cancer data set from the National Surgical Adjuvant Breast and Bowel Project. In terms of statistical significance of the treatment effect and model adequacy, all generalized models lead to similar conclusions, suggesting that the beta‐Weibull family is a reasonable candidate for modeling survival data. Copyright © 2009 John Wiley & Sons, Ltd.     

运动对去卵巢大鼠骨大小和骨量的影响

用测定骨大小和骨量的方法,观察运动对去卵巢大鼠骨大小和骨量的影响。将健康4月龄雌性SD大鼠32只随机分成4组:正常对照组、假去卵巢组、去卵巢组、去卵巢+运动组。去卵巢+运动组大鼠于去卵巢术后第7 d开始运动训练,每周5 d,每天连续匀速跑45 min,16 m/min,跑道倾角0°,持续10周。结果表明,去卵巢大鼠骨直径、骨体积、骨湿重、骨湿重/体重、骨干重、骨干重/体重、骨干重/骨体积等指标均低于假去卵巢组。去卵巢大鼠运动训练后,骨直径、骨体积、骨湿重、骨湿重/体重、骨干重、骨干重/体重、骨干重/骨体积等指标均较去卵巢组增加,并且基本上恢复至对照组水平。提示运动有利于改善去卵巢大鼠的骨大小和骨量。     

实时荧光定量PCR法筛查唐氏综合征的实验研究

目的建立一种无创性、高特异性的快速筛查唐氏综合征（Down’s syndrome，DS）的检测方法。方法采用实时荧光定量PCR技术对正常人和DS患者外周血样本的有核细胞进行检测，根据△Ct值的差异建立检测方法。结果正常组和唐氏组△Ct值有显著性差异（P〈0．001），初步建立了实时荧光定量PCR筛查唐氏综合征的快速检测方法。结论实时荧光定量PCR具有无创性、特异性高且简单、快速等优点，适用于唐氏综合征产前筛查。     

医院民主管理工作要抓根本重质量

民主管理工作是工会工作的一个重要组成部分,它在整个社会工作中起到了举足轻重的作用.近年来,我院的民主管理工作紧紧围绕改革、发展、稳定的大局,围绕医院建设,坚持服务医院发展,突出重点,推动创新,增强实效,维护职工的合法权益,在医院发展中起到了一定的作用.