Lymphadenopathy-associated virus antibodies and T cells in hemophiliacs treated with cryoprecipitate or concentrate

Evidence for exposure to lymphadenopathy-associated virus (LAV) was investigated in 48 patients with hemophilia, 15 of whom had been treated exclusively with single-donor cryoprecipitate. The prevalence of antibodies to LAV in all patients was 53% in 1983 and 63% in 1984, while in patients treated only with cryoprecipitate, the prevalence was 31% in 1983 and 40% in 1984. Patients treated with any concentrate had a seroprevalence of 65% in 1983 and 77% in 1984. Seropositive patients were more likely to have a significant reduction in the ratio of helper to suppressor T cells, absolute numbers of helper T cells, and T cell function in vitro. Seven of 18 patients who were seronegative in 1983 had seroconverted by 1984. The relative risk of seroconversion for patients using any concentrate since 1981 compared with those using cryoprecipitate only was 3.9 (P = .04). Nevertheless, the rate of conversion in the latter group was 18% per year.     

Interactions in the aetiology,presentation and management of synchronous and metachronous adenocarcinoma of the prostate and rectum

Adenocarcinoma of the prostate and rectum are common male pelvic cancers and may present synchronously or metachronously and, due to their anatomic proximity. The treatment of rectal or prostate cancer (in particular surgery and/or radiotherapy) may alter the presentation, incidence and management should a metachronous tumour develop. This review focuses on the interaction between prostatic and rectal cancer diagnosis and management. We have restricted the scope of this large topic to general considerations, management of rectal cancer after prostate cancer treatment and vice versa, management of synchronous disease and cancer follow-up issues.     

儿科过敏的个案报道

Introduction Allergic diseases are unfortunately on the increase. This is due to the massive exposure to chemicals and pollutants contained in the air we breathe, in the food we eat and in the water we drink. This is also due both to the stressful life we lead nowadays, which causes energetical unbalances in our immune system, and to the contact with unfamiliar allergens coming from foreign Countries.     

Smoking and alcohol use during pregnancy affects preterm infants' docosahexaenoic acid (DHA) status

This study investigated the effect of alcohol consumption and smoking during pregnancy on the fatty acid composition of the infants. A total of 40 very-low-birth-weight (VLBW) infants, weighing between 750 and 1500 g, were enrolled in the study after being hospitalized and ventilated for respiratory distress syndrome (RDS). Maternal and infant demographic information was recorded. Questions regarding maternal smoking (none, < 10 and > or = 10 cigarettes/d) and alcohol consumption (none, occasionally, moderate and severe) were recorded. Erythrocyte membrane (EMB; n = 40) total fatty acid analyses were performed at birth (baseline) and on days 14 and 28 postnatally. During pregnancy, 42% of mothers consumed alcohol and 50% smoked. At birth, infants of mothers who smoked and consumed alcohol during pregnancy, had significantly higher blood docosahexaenoic acid (DHA; p < 0.05) than infants of mothers who abstained from both alcohol and smoking. The consequences of this finding remain unknown.     

紫外分光光度法测定复方酮康唑软膏中酮康唑和氧氟沙星的含量

目的：建立复方酮康唑软膏的含量测定方法。方法：用双波长分光光度法测定酮康唑的含量，用单波长法测定氧氟沙星的含量。结果：两被测组分的平均回收率和相对标准偏差分别为酮康唑１００．３３％和０．３２％；氧氟沙星１００．８５％和０．２７％。结论：方法简便、准确，可用于复方酮康唑软膏的质量控制。     

金属硫蛋白对大鼠肝脏线粒体氧自由基损伤的保护作用

目的：研究金属硫蛋白（ＭＴ）对氧自由基损伤线粒体的保护作用以探讨其细胞保护机制。方法：采用ＦｅＳＯ４／抗坏血酸自由基发生系统直接损伤线粒体，测定Ｃａ（２＋）－Ｍｇ（２＋）－ＡＴＰａｓｅ活性和Ｃａ（２＋）摄入的变化。结果：ＭＴ能够直接拮抗氧自由基对线粒体Ｃａ（２＋）－Ｍｇ（２＋）－ＡＴＰａｓｅ活性和Ｃａ（２＋）摄入的抑制作用（Ｐ＜０．０１）。结论：ＭＴ对氧自由基损伤线粒体有明显保护作用，ＭＴ对细胞器线粒体的保护作用可能是细胞保护机制之一。