地塞米松在预防盖诺引起静脉炎中的应用

抗肿瘤化疗药"盖诺"属长春碱类抗癌药.该药是高渗性的溶液,在静脉滴注时极易渗到皮下间隙致局部浓度过高,且又是水溶液呈酸性,直接对血管有一定的刺激,pH值改变引起静脉或毛细血管痉挛,局部供血减少,致组织缺血、缺氧,从而导致静脉炎的发生.     

兔骨髓基质细胞的分离培养研究

目的分离培养兔骨髓基质细胞,观察其体外生长特性.方法用密度梯度离心结合贴壁培养法分离兔骨髓基质细胞,进行体外培养,传代扩增,测定其生长曲线,用相差显微镜、细胞化学染色观察细胞生物学性状及功能特点.结果密度梯度离心结合贴壁培养法可有效分离并且纯化兔的骨髓基质细胞.传代细胞均一性较好,呈纺锤形,细胞增殖快,加入地塞米松(Dxm 10-5 mmol/L),β-甘油磷酸钠(β-GP 2 mmol/L)、L-抗坏血酸(AA 50 mg/L)可诱导BMSCs分化为成骨细胞,von kossa法检测骨钙素阳性.结论体外培养的骨髓基质细胞生长稳定,增殖力强,可诱导分化.     

地塞米松注射液致精神异常1例

1病历简介 患者男,26岁.因活动后胸闷,气短,伴干咳半月,于i999年11月4日入院.查体:体温36.2℃,呼吸20次/分,脉搏130次,/分,血压14/11千帕.神清,精神可,双肺呼吸音粗糙,未闻及干湿性罗音,心界向左扩大,心率130次/分,奔马律,腹部无异常,生理反射存在,未引出病理反射.胸片示心脏普大,以双侧房及左室扩大明显,心胸比0.53左右,左上肺轻度痕血.初诊扩张性心脏病,入院予抗感染,极化液,西地兰,速尿针等治疗,11月8日晚7时因胸闷、气短加重,予西地兰0.4毫克,地塞米松针10毫克静推,约3小时出现精神恍惚、谵语、幻觉、烦燥不安,无呕吐,抽搐,未处理,10小时症状自行缓解.     

HPLC法同时测定复方盐酸环丙沙星滴耳液两组分的含量

建立同时测定复方盐酸环丙沙星滴耳液中盐酸环丙沙星与醋酸地塞米松含量的方法.采用HPLC法.色谱柱为W aters C18柱(250 mm×4.6 mm,5μm),流动相为pH=2.6的磷酸水溶液-甲醇(30:70,V/V),检测波长为240 nm.结果显示盐酸环丙沙星在42.24~98.56μg.mL-1范围内浓度与峰高线性关系良好,r=0.999 7,平均回收率为100.2%,RSD=0.50%;醋酸地塞米松在15.17~35.39μg.mL-1范围内浓度与峰高线性关系良好,r=0.999 5,平均回收率为100.0%,RSD=0.75%.因此HPLC法可用于同时测定复方盐酸环丙沙星滴耳液中环丙沙星与醋酸地塞米松的含量.该法简便、灵敏、准确.     

Notch signaling stimulates osteogenic differentiation of human bone marrow-derived mesenchymal stem cells

Notch signaling is one of the most important pathways mediating cell determination and differentiation.In this study, the roles of Notch signal in the regulation of osteogenic differentiation of human bone marrow mesenchymal stem cells (hMSCs) were investigated. The expression of Notch1, Jaggedl and DTXI detected by reverse transcrip-tion polymerase chain reaction (RT-PCR) suggested that Notch signal might exhibit a physiological regulatory role in the differentiation of MSCs. Constitutive expression of the intracellular domain of Notchl (ICN), the active form of Notchl protein, can activate Notch signal in cells without ligands‘ binding, hMSCs were isolated, expanded, and infected with retrovirus carrying green fluorescent protein (GFP) gene or ICN. Overexpression of ICN in hMSCs resulted in enhanced osteogenic differentiation induced by dexamethasone (Dex), which was characterized by an increase of cellular alkaline phosphatase (ALP) activity and calcium deposition. These results indicate that Notch stimulates differentiation of MSCs into osteoblasts.     

妥布霉素地塞米松眼膏治疗睑缘炎152例疗效分析

目的探讨妥布霉素地塞米松眼膏在睑缘炎中的治疗效果.方法选取睑缘炎患者152例,根据治疗方案分为两组,76例患者采用红霉素眼膏治疗为对照组,76例患者采用妥布霉素地塞米松眼膏治疗为观察组,疗程4周,比较两组患者的7 d近期疗效、28 d远期疗效、眼压改变情况、不良反应情况.结果治疗后,两组患者眼压均显著升高,观察组患者眼压(16.3±2.2)mmHg明显高于对照组(14.5±1.6)mmHg;观察组患者7 d近期疗效(30.3%)、28 d远期疗效(92.1%)均明显好于对照组(13.2%,63.2%);观察组患者不良反应发生率(1.3%)明显低于对照组(9.2%),差异具有统计学意义(P0.05).结论妥布霉素地塞米松眼膏是治疗睑缘炎的有效药物,可明显改善患眼的临床病症,显著提高疾病治愈率,不良反应少,且安全性高,值得临床推广使用.     

地塞米松对巨噬细胞活化的影响

类固醇激素(如地塞米松)对巨噬细胞(Mφ)活化和分泌白细胞介素-1、肿瘤坏死因子-α、及前列腺素E_2等都有强烈抑制作用,但其作用机理尚未阐明。本研究就此做了初步观察,结果报道如下。     

盐酸多塞平乳膏治疗局限性神经性皮炎60例疗效观察

目的:观察质量分数为5%盐酸多塞平乳膏(0 5g∶10g)治疗局限性神经性皮炎的疗效和安全性。方法:采用临床开放性随机对照研究,对比盐酸多塞平乳膏与地塞米松霜治疗局限性神经性皮炎的临床疗效。治疗组60例使用盐酸多塞平乳膏,对照组60例使用地塞米松霜,治疗1周后统计结果。结果:治疗组与对照组治疗前后瘙痒评分差异均有显著性差异(P<0 05),治疗组治疗前后苔藓样化评分无显著性差异(P>0 05)。治疗组与对照组的总有效率分别为65 0%和68 3%,两组间无显著性差异(P>0 05)。结论:质量分数为5%的盐酸多塞平乳膏治疗局限性神经性皮炎起效迅速、疗效确切、与地塞米松霜相比短期疗效及副作用无明显差异,适用于治疗局限性神经性皮炎。     

Inhibitory Effect of Lithium Chloride on Mouse Thymocyte Apoptosis

This study investigates the effect of lithium chloride (LiCI) on mouse thymocyte apoptosis. A primary culture of mouse thymocytes was preincubated with LiCI (from 5 to 500μmol/L) before exposure to dexamethasone (DEX), the apoptosis inducer. With 100μmol/L of LiCI, apoptotic cell death induced by DEX was almost completely prevented as determined by flow cytometric analysis, terminal deoxynudeotidyltransferase (TdT)-mediated dUTP nick end labeling (TUNEL) assay and DNA laddering assay. The results show that the DEX-induced increment of caspase-3 activity in thymocytes is completelye liminated by LiCI preincubation. The results suggest that LiCI may protect Balb/c mouse thymocytes from apoptosis induced by glucocorticoid in a dose-dependent matter.