药物浓度和病因对三磷酸腺苷治疗阵发性室上性心动过速的影响

本文报告23例次ATP治疗PSVT的效果,总有效率56.5％,9例次高浓度快速注射者8例转复。器质性心脏病者副作用较多,1例冠心速注高浓度ATP后,发生心室颤动和阿-斯氏综合征。这一结果提示:药物浓度和注射速度是影响疗效的主要因素,PSVT伴AVB者疗效也很低;病因和药物浓度是决定副作用的因素。因此,对于器质性心脏病者,尤其冠心病人,应避免高浓度快速静脉注射ATP。     

临床输液监控系统的设计

本文针对临床输液过程中出现的漏、停、输液速度改变等各种问题，讨论了一由单台微机和多个单片机通讯实现的多床输液自动监控、自动反应、自动报答系统的可行性，并给出了主要部分的硬件、软件设计方法。     

血清α-L-岩藻糖苷酶对原发性肝癌的诊断价值

用分光比色法测定血清α-L-岩藻糖苷酶(AFU),研究其对36例原发性肝癌(PHC)、30例肝硬化(LC)、16例转移性肝癌(MC)、11例良性肝脏占位性病变(BSOL)、22例慢性肝炎(CH)和20例胃肠道恶性肿瘤(EMT)患者的临床应用价值。在肝脏占位性病变组中对AFU,AFP和α_1AT进行比较研究。结果表明:PHC组血清AFU活力显著高于其余各组,AFU,AFP和α_1AT对PHC诊断敏感性分别为75％,61.1％和66.7％,可靠性分别为81.7％,83.9％和65.6％,三项指标联测则PHC诊断阳性率可提高到91.7％。AFU活力与PHC肿瘤大小、AFP含量无相关,与α_1AT呈正相关。本文资料表明:AFU可作为PHC血清标志物,对AFP阴性病例尤有价值。     

Cyclosporine overcomes cold preservation/reperfusion injury of liver graft: Chemokine release and liver ultrastructure

There is a growing body of evidence that the cytokine, tumor necrosis factor-α (TNF-ga), plays an important role in the development of hepatic ischemia/reperfusion injury. We found that the immunosuppressants, cyclosporine-A (CsA), azathioprine, and FK506, have protective effects on such injury. The purpose of the present study was to elucidate mechanisms involved in these beneficial effects of the immunosuppressant, CsA, on liver injury following cold preservation and transplantation, with special reference to the suppression of TNF-α release. Rat livers were stored in Euro-Collins solution (EC) at 4°C for 6h and orthotopically transplanted. The animals allotted to two groups: group A (untreated controls) and group B (CsA pretreatment of recipients). CsA (10 mg/kg, p.o.) was given for 3 consecutive days preoperatively. CsA pretreatment of the recipients significantly improved the 2-week survival rate (0/6 for group A, 3/6 for group B;P<0.05) and this was associated with a significant decrease in serum TNF-α levels 2h posttransplantation (group A, 69.8±15.7 pg/ml; group B, 22.8±6.8; mean±SEM;n=12 each;P<0.05) and amelioration of sinusoidal endothelial injury, assessed by electron microscopy. Plasma endotoxin levels following reperfusion of the grafts were not altered by the CsA therapy. Morphologically, CsA pretreatment of the recipients did not alter activation of Kupffer cells. CsA pretreatment of the recipient aids in preventing cold preservation/reperfusion injury of the liver graft, possibly by modulating effects of TNF-α.     

Immunology

A selection of interesting papers that were published in the two months before our press date in major journals most likely to report significant results in immunology.