肾综合征出血热病毒对体外培养人血管内皮细胞形态和ATP酶活性的影响

目的 为研究肾综合征出血热（HFRS）病毒致病株和非致病汉坦病毒株（PHV）对血管内皮细胞（HEC）形态和ATP酶活性的影响。方法 采用化学酶法测定血管内皮细胞总ATP酶、细胞膜Na^ -K^ -ATP酶、线粒体Mg2^＋-ATP酶的;光镜和电子显微镜对细胞的形态改变进行动态观察。结果 HFRS病毒致病株（A9）感染早期HEC的3种酶活性下降不甚明显,中晚期下隆明显（P＜0.05）,相应的细胞超微结构也出现一定程度的改变;非致病不坦病毒株（PHV）对ATP酶活性及超微结构未见明显改变。结论 HFRS病毒致病株感染后HEC的ATP酶活性下降及超微结构变化可能是HFRS患者血管通透性增加、血浆外渗的原因之一。     

THE EFFECT OF ANTITHYROID DRUGS ON B AND T CELL ACTIVITY IN VITRO

This study examined the abilities of methimazole, propylthiouracil (PTU) and propranolol to exert an immunosuppressive effect in vitro. Incubation of peripheral blood lymphocytes (PBL) with propranolol showed the drug to have no effect on either B- or T-cell activity. Methimazole or PTU at concentrations of greater than or equal to 10(-5)M resulted in significantly lower amounts of IgG and IgM being released into the culture medium. Both drugs were also found to have a direct effect on T-cell function as they caused the percentage of total and suppressor cells to increase towards normal levels. The three drugs were all found to have some free radical scavenging ability. These ranked PTU greater than methimazole greater than propranolol. These in-vitro findings would suggest that both methimazole and PTU have some direct effect on the immune system. It would seem more likely however that these effects are mediated via interleukin 2 rather than by their ability to act as free radical scavengers.     

风湿热活动性指标的初步探讨

目的：为了指导风湿热的防治并改善其预后，寻找特异性和敏感性较高的指标以探讨风湿热活动性。方法：采用最具生物活性的Ａ组链球菌壁多糖部分作包被抗原，以ＥＬＩＳＡ法测定抗链球菌壁多糖抗体（ＡＳＰ）ＩｇＧ、ＩｇＭ。结果：风湿性心脏病活动期ＡＳＰＩｇＧ、ＩｇＭ的水平（３６５２±２１９５和２６１９±０７４８）和阳性率（５６１％和７５６％）显著高于正常人、风湿性关节炎和风湿性心脏病静止期（Ｐ＜００５～００００１），后二者ＡＳＰ－ＩｇＧ、ＩｇＭ的水平和阳性率明显高于正常人（Ｐ＜００５～００１）；随治疗ＡＳＰ－ＩｇＭ下降较快（Ｐ＜０００１），ＡＳＰ－ＩｇＭ与反映风湿热活动的传统指标（血沉、Ｃ－反应蛋白等）之间具有正相关性，ＡＳＰ在风湿热活动中的阳性率（８５４％）明显高于ＥＳＲ、ＣＲＰ和ＡＣＬ。结论：ＡＳＰ在判断风湿热活动性方面具有较高的敏感性