192例恶性肿瘤患者应用重组人肿瘤坏死因子-α免疫功能与疗效的相关性分析

目的：观察重组人肿瘤坏死因子—α(rh—TNFα)静脉输注对恶性肿瘤患者细胞免疫功能的增强作用及影响因素，并分析其与rh—TNFα抗肿瘤作用的相关性。方法：选择具有明确病理诊断的复治或拒绝放、化疗的乳腺癌、恶性淋巴瘤、肾癌和恶性黑色素瘤患者，静脉输注rh—TNFα，100万U／m^2，每日1次，每周连续5日，连用4周为1个疗程。采用免疫荧光直标染色法染色，以流式细胞仪检测治疗前后患者外周血T细胞亚群、NK细胞变化，同时评价抗肿瘤治疗的疗效。治疗前后细胞免疫功能比较采用配对t检验，免疫功能变化与抗肿瘤客观疗效的相关性采用多因素Logistic回归分析。结果：rh—TNFα给药后可提高患者外周血NK细胞和T细胞亚群数量，但CD4／CD8比值变化不明显，NK细胞和T细胞亚群的变化与rh—TNFα的抗肿瘤客观疗效的相关性不显著。结论：rh—TNFα具有一定的改善肿瘤患者细胞免疫功能的作用，但这种免疫增强作用可能不是其抗肿瘤疗效的最主要机制。     

Lowry法测定眼宁滴眼液中蛋白质的含量

目的 :制定眼宁滴眼液中蛋白质的含量测定方法。方法 :采用Lowry法测定含量 ,以 650nm为测定波长测定吸收度。结果 :在 0 0 4～ 0 2 0mg/ml之间呈良好线性关系 ,相关系数r=0 9990 ,平均回收率为 99 9% (n =6) ,RSD =1 3 %。结论 :本法简便、准确、重现性好 ,可用于眼宁滴眼液的含量测定     

Centrilobular emphysema: CT-pathologic correlation

Over a 5-year period, 25 patients who had undergone chest computed tomography (CT) died and were autopsied. Their lungs were fixed in the inflated state and were assessed for the presence and severity of centrilobular emphysema (CLE). Three radiologists independently evaluated the CT scans for nonperipheral low-attenuation areas, peripheral low-attenuation areas, pulmonary vascular pruning, pulmonary vascular distortion, and pulmonary density gradient. The CT criterion that best correlated with the presence and severity of CLE was the nonperipheral low-attenuation area. With this CT criterion, lung destruction was correctly identified in 13 of 15 cases. The absence of this criterion resulted in correct identification of eight of ten normal lungs. These preliminary data suggest that CLE can be reliably identified and quantified with current CT scanners.     

《中南新农村撒店三千》

规范化整合让终端和公司同时获得利益，而买药送保险也算是开了个先河，而且还是在农村市场，很多地方都有过此类想法，但是真正实施的并不多。中南新农村的杜总有眼光有远见，值得同行的学习。     

新的声音，体现全面客观

在搜索关于药物临床试验相关资料的过程中，我们得到的多是与“试药”有关的大量骇人的报道，从2007年开始，有了新的声音。《中国处方药》在去年大半年的时间里开设的药物临床试验专版，以其大样本的调研为基础，全方位反映国内外药物临床试验的焦点和热点问题，搭建了一个供各方面有识之士畅所欲言的交流和辩论的平台。     

Transabdominal versus endovaginal pelvic sonography: prospective study

Transabdominal and endovaginal pelvic sonograms were obtained in 108 nonpregnant patients referred for pelvic sonography. The studies were independently obtained by two radiologists and interpreted on the basis of identical clinical information. The sonograms were then compared for anatomic detail and abnormalities. A determination was made about which examination, if either, was superior. Follow-up was performed through a review of the medical records and follow-up studies. Overall, the endovaginal study was judged superior in 65 cases (60.2%), equal in 39 (36.1%), and inferior in four (3.7%). The authors conclude that the endovaginal examination can effectively replace the transabdominal examination as the initial approach for routine pelvic sonography.     

1993年与1996年北京市部分高中生使用精神活性物质调查

目的 :为了解北京市中学生精神药物以及香烟、酒的使用情况及趋势。方法 :自拟“学生使用精神活性物质调查表”,分别在 93年和 96年对北京市部分高中二年级学生共 1792人进行了精神活性物质使用情况调查。结果 :93年和 96年使用率最高的物质分别为酒、去痛片、香烟。挥发性溶剂 96年较 93年使用人数有所增加。 93、 96年均有学生自报尝试使用过中枢兴奋剂 ,并有 2例 ( 0 .2 % )已不能停止或减少使用。结论 :北京市中学生中精神药物的使用问题不容忽视 ,应予以警戒     

Seroprevalence of human T-lymphotropic virus, hepatitis C virus, and human immunodeficiency virus in Asian American potential bone marrow donors

BACKGROUND: Asian Americans are generally underrepresented both as volunteer blood and bone marrow donors. STUDY DESIGN AND METHODS: To investigate the risk of transfusion transmission of viruses that is associated with increasing participation by Asian American donors, antibodies to human T-lymphotropic virus (HTLV), hepatitis C, and human immunodeficiency virus in Asian American volunteers recruited as potential bone marrow donors were measured. A total of 1354 Asian Americans were enrolled in the study, of whom 54 percent were Chinese, 26 percent Japanese, 9 percent Filipino, 4 percent Korean, 3 percent Indian, and 5 percent of other Asian or mixed Asian and other ethnicity. The majority of the study population was aged 20 through 49 and of high socioeconomic status, as indicated by education and income. Viral antibodies were measured with both screening enzyme-linked immunosorbent assays and supplemental testing, and polymerase chain reaction was used to resolve discrepant HTLV results. RESULTS: Confirmed seroprevalence rates for HTLV were 0.15 percent with one manufacturer's Western blot and 0.3 percent with the other; however, no sample was positive for HTLV types I or II in polymerase chain reaction. Confirmed seroprevalence to hepatitis C virus was 0.5 percent. No subject was seropositive for human immunodeficiency virus. CONCLUSION: On the basis of the moderate size and high education level of this study population, it is concluded that Asian American volunteer bone marrow donors do not pose a greater risk for transmission of HTLV type I or II, human immunodeficiency virus, or hepatitis C virus than does the average American blood donor.