Dexamethasone treatment attenuates early seawater instillation-induced acute lung injury in rabbits.

There is very little evidence on the value of giving corticoids in cases of seawater drowning induced acute lung injury/acute respiratory distress syndrome (ALI/ARDS). Therefore, this study aimed to investigate whether dexamethasone treatment can attenuate seawater instillation-induced acute lung injury in rabbits. Seawater (4 ml/kg body weight) was instilled into the lower trachea of ventilated, anesthetized rabbits. Then these rabbits were assigned randomly 20 min later to receive intravenous injection of 1mg/kg body weight of dexamethasone (dissolving in 2 ml of normal saline) or 2 ml of normal saline. All animals demonstrated immediate drops in arterial oxygen tension (PaO2) and the total thoracic compliance, which were significantly improved after 2 h of dexamethasone treatment. Histopathological study also indicated that dexamethasone treatment markedly attenuated lung histopathological changes, alveolar hemorrhage and inflammatory cells infiltration with evidence of decreasing of myeloperoxidase (MPO) activity and tumor necrosis factor-alpha (TNF-alpha) concentration in lung tissue. In addition, dexamethasone treatment reduced extravascular lung water and lung epithelial-endothelial barrier permeability, up-regulated the expression of surfactant protein-A (SP-A) and alpha-epithelial Na+ channel, and increased Na+/K+-adenosine triphosphatase (Na+/K+-ATPase) activity and Na+/K+-ATPase-alpha1 protein abundance. Thus, these data indicate that dexamethasone treatment might be of benefit in patients with seawater aspiration-induced ALI.     

药品压价只能是权宜之计

现在我们确实面临很多问题,百姓对看病贵的反应,除了百姓的直觉外还有一些指标可以反映,如国内外公认的费用水平衡量指标:卫生费用占本国GDP的百分比,目前我国卫生费用已经占到GDP的5％左右,是历史上的最高点了。但是和一些发达国家比,我们国家的卫生费用水平还是偏低的,大家普遍认为7％至 8％是相对合理的水平。     

不同无性系杜仲含胶细胞密度的动态研究

文章通过对不同无性系杜仲叶中含胶细胞密度的测量,对其生长动态作了分析研究,结论如下:不同无性系含胶细胞的密度在七月中旬达到最大;在同一引种地的雌雄株之间,雄株含胶细胞的密度不完全小于雌株。     

《新方八阵》补真阴与补真阳用药关联性研究

用方剂计量学研究中的关联性分析法对《新方八阵》中补真阴、补真阳药物的应用与其他医家进行比较，印证了景岳重视阴中求阳、阳中求阴的思想，为方剂比较研究中关联指数与关联性分析的具体化内容之一。     

急性血吸虫病致免疫复合物肾病15例

1998～2004年本所共收治急性血吸虫病引起免疫复合物肾病患者15例，报告如下。     

氦氖激光血管内照射配合吗啡控制癌痛的对照观察

目的探讨氦氖激光血液照射辅助治疗控制癌痛的疗效。方法对52例中晚期癌症重度痛患者在使用口服吗啡治疗基础上加用低能量氦氖激光血液照射治疗1周后,对疼痛缓解程度及平均缓解时间进行对照观察。结果加用激光照射组的镇痛疗效优于单用吗啡组,P<0.05,有效率分别为92%和84%,P>0.05,显效率分别为67%和46%,u=2.07,P<0.05,均数缓解时间分别为(8±3)h和(8±4)h,t=0.78,P>0.05,差异无显著性意义。结论氦氖激光血液照射治疗有一定协同镇痛作用。