【摘要】 目的 采用多柔比星（doxorubicin，DOX）制备心肌损伤动物模型，评价各种检测心功能变化方法的意义。 方法 14只新西兰大白兔，DOX耳缘静脉注射，每周3 mg/kg，共10周。分别于给药前、第4周末及实验结束时测定血清肌钙蛋白Ⅰ（cTnI）和脑钠肽（BNP）水平，彩色多普勒超声心动图检测心功能变化，并观察心肌组织病理形态学改变及心肌细胞凋亡情况。 结果 使用DOX前后对比，血清cTnI和BNP浓度升高（Plt;0.05）；左室射血分数（LVEF）和左室短轴缩短率（LVFS）下降（Plt;0.05）；心肌组织病理显示心肌细胞出现不同程度的空泡变性与水肿，细胞间隙明显增宽，大量炎性细胞浸润。心肌细胞凋亡明显增加。 结论 结合心脏超声检查和血清cTnI、BNP指标检测可判断心肌损伤程度。【Abstract】 Objective To observe the changes of heart function caused by doxorubicin in rabbits. Methods A total of 14 New-Zealand white rabbits were intravenous-injected with doxorubicin with a dosage of 3 mg/kg intravenously once a week, and the accumulative dose was 30 mg/kg. Before the medication and at the 4th and 10th weekend after the medication, the serum levels of cardiac troponin I (cTnI) and brain natriuretic peptide (BNP) were measured; left ventricular ejection function (LVEF) and left ventricular fractional shortening (LVFS) were performed on the rabbits respectively. At the 10th weekend, the pathological changes of cardiac tissue and the apoptosis of myocardial cell were detected. Results The levels of cTnI and BNP significantly increased (Plt;0.05), and the LVEF and LVFS markedly decreased (Plt;0.05) after the administration of doxorubicin. Uneven vacuolar degeneration and edema of cardiocytes could be observed with a wide cell spaces and inflammatory cell infiltration in the histopathological slices. Conclusion The combined application of heart sonography with the detection of the serum levels of cTnI and BNP can evaluate the degree of myocardial damage of the rabbits models very well.
目的 总结多发性骨髓瘤（multiple myeloma, MM）的发病特征及临床特征，分析比较不同治疗方案对MM的疗效及不同类型与不同临床特征的MM治疗效果。 方法 回顾性分析2003年1月-2008年1月128例MM患者的发病和临床特征，以及与治疗效果的关系，并对不同治疗方案、不同类型间的疗效进行比较。 结果 MM患者发病的中位年龄为59岁，临床上以不明原因的骨痛、贫血、感染和球蛋白增高为主要表现。128例患者中行方案一（马法兰、强的松/地塞米松、反应停）的总有效率为53.3%（32/60）；方案二（环磷酰胺、长春新碱、马法兰、强的松、卡氮芥、阿霉素）为44.4%（8/18）；方案三（长春新碱、阿霉素/表阿霉素/脂质体阿霉素、地塞米松）为68.5%（24/35），方案四（硼替佐米、地塞米松/反应停）的总有效率为86.6%（13/15）。方案一和方案二间、方案三和方案四间疗效差异无统计学意义（Pgt;0.05），方案三、方案四的疗效均优于方案一和方案二（Plt;0.05）。IgG型总有效率为63.2%（48/76），IgA型为60.9%（14/23），kappa轻链型为42.8%（6/14），lammda轻链型为46.2%（6/13）。IgG型和IgA型间的疗效差异无统计学意义（Pgt;0.05），但IgG型、IgA型的疗效均优于kappa轻链型和lammda型（Plt;0.05）。不同类型及使用不同方案的患者，其中位生存期及3年和5年的生存率差异无统计学意义（Pgt;0.05）。 结论 MM患者发病高峰年龄介于40～70岁，骨痛和贫血是最常见的首发症状。长春新碱、阿霉素/表阿霉素/脂质体阿霉素、地塞米松以及硼替佐米、地塞米松/反应停方案总体疗效相当，但后者完全缓解率高于前者。
Objective To investigate the accurateness and rapidity of information on SARS , and to provide evidence for decision-making in the construction of the public health information system of China, including information collection, identification and release. Method SARS related information was systematically collected, from ① databases including Medline, CBMdisc and Cochrane Library; ② official websites including WHO, MOH and CDC; ③ non-governmental websites including Sina, Sohu, Yahoo; ④ eleven Chinese Journals and ⑤ gray literatures, These evidence were graded based on their scientific sense, and were analyzed according to their rapidity of release. Results A total of 11 955 pieces of related information were collected. Non-governmental websites were the agents that released the largest number of information (46.7%). Regarding the scientific sense of evidence, hand searched journal was at the top of the evidence pyramid, and followed by Medline, gray literature, CBMdisc, official and non-governmental websites. Regarding the rapidity, official website achieved the most rapid information release, which was followed by nongovernmental website, journal, and database. 71.8 percent of information from official websites was in Chinese, while 65 percent was from database. Conclusions The SARS information from China has contributed enormously to the global information release. Although the amount and rapidity of the information were satisfied, management and deep processing of information should be improved.
Objectives Re-evaluation the clinical evidence of. anti-virus medicines for virosis communicable respiratory disease on the effectiveness, safety and health economy. Methods To search CL (2003 Issue 1), Medline (1966-2003.5), CCOHTA, SBU, NICE and NCCHTA and collect all CSRs and HTA with computer . The quality of evaluation partly based on QUOROM will be done before results analysed. If heterogeneity does not exist in CSRs and HTA, a Meta-analysis will be re-conducted. Results 4 CSRs (38 RC, n=22 835) and 5 HTA (28 RCT, n=139 281) were included. Due to the significant heterogeneity between these studies, further Meta-analysis could not be conducted, and descri ptive conclusions were conducted only. Conclusions Neuraminidase inhibitors (zanamivir and oseltamivir) are more effective than placebo in reducing the duration of symptoms of patients with basic disease, and have limited effectiveness in health adults. But, both are well tolerated and reduce the rate of contracting influenza in all individuals. For prevention, neuraminidase inhibitors cost more and are not suitable as first-line drug. 2. Diamantane is more effective than placebo in reducing the duration of having fever, and effectively prevents the influenza A. Amantadine and rimantadine have comparable effectiveness in the prevention, although rimantadine induces fewer adverse effects than amantadine. 3. The number of the childrenpatients of upper respiratory tract infection prevented and treated by ribavirin is too small to draw any conculsion now.