三嵌段高分子骨组织工程支架材料的体内生物学性能评价

目的：对三嵌段高分子骨组织工程支架材料-聚（丙交酯-乙交酯）[天冬氨酸-聚乙二醇1的生物相容性进行评价，探讨用于骨组织工程的可行性。 方法：实验于2003-08／12在华中科技大学同济医学院附属协和医院骨科实验室完成。①过敏试验：20只豚鼠随机分为试验组、对照组，每只豚鼠脊柱两侧皮内注射等体积聚（丙交酯-乙交酯）[天冬氨酸-聚乙二醇]浸提液、生理盐水及体积分数为0．05的甲醛溶液，记录激发部位红斑水肿。②急性全身毒性试验：12只小白鼠随机分为试验组和对照组，该两组腹腔分别注射浸提液及生理盐水，4，24，48及72h观察动物的一般状态。③植入试验：聚（丙交酯-乙交酯）[天冬氨酸-聚乙二醇]植入6只新西兰大白兔肌肉内，1，4及8周切取材料周围0．5cm处肌肉组织，苏木精-伊红染色，光镜下观察。 结果：①过敏试验结果：皮内注射浸提液及生理盐水动物皮肤无红斑水肿，注射体积分数为0．05的甲醛溶液出现中度以上红斑水肿。②急性全身毒性试验结果：阴性对照组未见毒性症状，试验组4h后仅1只有轻微的运动减少，24h后恢复正常。③植入试验结果：所有试验动物伤口均一期愈合。 结论：聚（丙交酯-乙交酯）[天冬氨酸-聚乙二醇]具有良好生物相容性，是一种新的骨组织工程支架材料。     

Effects of phycocyanin on apoptosis and expression of superoxide dismutase in cerebral ischemia reperfusion injury

IN T R O D U C T IO NSuperoxide dism utase (SO D )is an im portantendogenous free radica scavenger, itelim inates superoxide anion free radicals through dis proportionation, and itprotects the nerve cells in the process ofcere bralischem ia reperfusion in…     

Dynamic observation on thyroid function in severe head injury.

The dynamic changes of thyroid hormone levels in patients with severe head injury were observed. The results showed that the serum thyroid hormone levels changed rapidly within several hours after the injury and the mean levels of serum total T3 and T4 (TT3, TT4) decreased while high reverse triiodothyronine (rT3) increased significantly. Serum TT3, TT4 and rT3 levels returned to normal gradually in 2 to 3 weeks after the injury in the surviving group, whereas serum total T4 gradually declined and rT3 steadily increased in the fatal group. The mean levels of serum TSH remained unchanged in both groups. Therefore, the use of the levels of serum thyroid hormones as adjuvant indices can be helpful in making pertinent judgements of the severity and prognosis of severe head injuries.

     

INTRAVENOUS LEIOMYOMATOSIS OF THE UTERUS WITH EARLY PREGNANCY

Intravenous leiomyomatosis is a rare uterineneoplasm, histologically characterized by nodularmasses of benign smooth muscle growing withinthe uterine and pelvic veins. The entity has ty-pical gross and microscopic features. A case of intravenous leiomyomatosisassociated with uterine leiomyoma, adenomyosisand early pregnancy was reported. The condi-tion was recognized during surgery for uterinefibroids. This is, to our knowledge, the thirdcase of intravenOUs leiomyomatosis associatedwith pregnancy so far reported.     

氨氯地平与尼群地平治疗高血压的多中心平行对照研究

采用多中心、随机、单盲、组间、平行对照的方法对488例原发性高血压患者进行氨氯地平或尼群地平4周治疗观察，显示氨氯地平的降压有效率为90．4％，较尼群地平显著为高。不良反应较少，安全性好。每日只需服药1次，剂量5～10mg，方便病人。     

用DNAG C含量和DNA同源性测定法鉴定米克戴德军团菌

本文采用热变性温度法和液相复性速率法对—轻型特征及血清学反应相似米克戴德军团菌(Lm)的菌株进行了测定,结果表明该菌与标准Lm(C DC株)的DNA G Cmol％相差3.45％,与标准Lm(C DC株)的DNA同源性达81.99％,根据伯杰细菌鉴定手册(1984),可判定该菌株与标准Lm(C DC株)为遗传型一致的类群,即从遗传学角度证明该菌为Lm。     

Additive effects of earthworm extract with HpD-laser on the enhancement of reactive oxygen production and the inhibition of[~3H]—thymidine.uptake in mouse ascitic tumor cells

The effects of combined use of earthworm extract(912)and HpD-laser on the produc-tion of reactive oxygen and the biosynthesis of DNA in S_(180) tumor cells were studied throughchemiluminescence measurement and[~3H]-TdR incorporation assay.The results showed that as com-pared with the control,the intensity of chemiluminescence emitted by tumor cells treatedsimultaneously with 912 and HpD-laser was enhanced more than ten-folds,while that treated with912 or HpD-laser alone was increased only 2～4 folds.The[~3H]-TdR incorporation into tumorcells of the former group was inhibited upto 74.1%,and that of the latter groups decreased onlyby 42.2% and 40.0%,respectively.In accordance with these biochemical changes,the ultrastructuraldamage of tumor cells of the former,combinedly treated group appeared to be the most serious.This suggests an additive effect of 912 with HpD-laser on tumor cells.In addition,if free radicalscavengers,such as catalase and superoxide dismutase,were added to the reaction systembefore chemiluminescence assay,the luminescent enhancement effect mentioned above was dramaticallyalleviated,implying the presence of O_2~ and H_2O_2 in the system.Therefore,as to the toxic effecton tumor cells,912 and HpD-laser are not only additive in efficiency,but also similar in theunderlying mechanism of action.     

对医院药事管理委员会系统工程管理的初探

本文通过对医院药事管理委员会的组织形式以及在医院药学事业中的特殊地位、工作任务、工作职责及职能效应的初步探讨,指出医院药事管理委员会在发展和建设医院药学事业中具有十三种职能、七大效应。认为加强医院药事管理委员会建设,是发展医院药学事业和保证医院药品质量的一种好方式。     

肾移植受者血清巨细胞病毒IgE和IgA抗体检测

采用间接ＥＬＩＳＡ检测２３名肾移植受者血清巨细胞病毒（ＣＭＶ）抗体，共检出１８名（７８％）活动性ＣＭＶ感染，其中１０名（４４％）为原发性感染。结果证实ＣＭＶ－ＩｇＥ和－ＩｇＡ具有较好的血清学诊断价值，优于ＣＭＶ－ＩｇＭ。