阿魏酸钠对大鼠肝线粒体氧化性损伤的保护作用

观察到阿魏酸钠有明显抑制硫酸亚铁和维生素C系统诱导的脂质过氧化反应和线粒体膨胀作用,且呈量效关系,并缓解丙二醛(脂质过氧化产物之一)对线粒体氧化磷酸化过程的解偶联反应。线粒体膜蛋白电泳图谱呈现阿魏酸钠有抑制丙二醛与膜蛋白交联作用。上述结果提示阿魏酸钠可缓解自由基损伤反应,有益机体能量合成代谢。     

Pancreaticogastrostomy in duodenocephalopancreatectomy. Operative technical note

The technique used to carry out pancreaticogastrostomy after duodenocephalopancreatectomy in 4 cases is described. The technique is better than pancreaticojejunostomy, which is associated with a high incidence of postoperative complications, such as abscesses, fistulae, haemorrhage, and autodigestion at the site of anastomosis.     

Posttransfusion purpura-like syndrome associated with CD36 (Naka) isoimmunization

BACKGROUND: CD36 deficiency, which could lead to CD36 isoimmunization, has been reported in the Japanese population. CD36 isoantibody has been involved in platelet transfusion refractoriness. CASE REPORT: A 50-year- old woman originally from Corsica developed severe acute thrombocytopenia after massive transfusion. She was found to be CD36 deficient, and platelet immunoassays revealed a CD36 (Naka) platelet isoantibody. Although the involvement of another mechanism could not be entirely ruled out, the thrombocytopenia was attributed to posttransfusion purpura-like syndrome. The antibody was also involved in platelet transfusion refractoriness. CD36 deficiency was present in two members of the patient's family as well. Flow cytometry studies demonstrated the absence of CD36 expression on the surface of blood monocytes and cultured erythroblasts and megakaryocytes from one of the two CD36-deficient family members studied, but, in the absence of previous immunization, these CD36-deficient patients were not isoimmunized. In contrast, CD36 deficiency was not found in a population of 808 healthy blood donors in the Paris, France, area. CONCLUSION: CD36 isoantibody might be involved in some cases of posttransfusion purpura and platelet transfusion refractoriness. These findings also confirm the extremely low frequency of CD36 deficiency among whites.     

天然有机化合物质谱研究——Ⅺ.苯丙型苷快原子轰击质谱MNa~+的MIKES谱

研究了六种苯丙型苷与Na~+加合离子的快原子轰击质谱(FAB—MS)和质量分离离子动能谱(MIKES)。结果表明:在FAB谱中[M+Na]~+加合离子的丰度要比[M+H]~+离子高得多。由此可给出糖苷的分子量信息,[M+Na]~+离子的MIKES谱可给出糖基序列信息。