PAI-1、t-PA/PAI-1比值与急性血管事件的相关性研究

目的了解血浆t-PA、PAI-1和t-PA/PAI-1比值在急性血管事件中的变化和意义。方法对于健康对照组、陈旧性和急性血管事件组分别采用ELISA法检测t-PA和PAI-1活性,计算t-PA/PAI-1比值。结果急性血管事件组血浆t-PA、PAI-1明显增高、t-PA/PAI-1比值明显降低,与其它两组相比P<0.01;陈旧性血管事件组血浆PAI-1增高,与对照组相比P<0.05;t-PA升高和t-PA/PAI-1比值降低,与对照组相比无显著差异。结论血浆t-PA和PAI-1水平与血管内皮稳定性密切相关。PAI-1增高和t-PA/PAI-1比值降低的程度在急性血管事件发生中起着重要的作用。监测PAI-1和t-PA/PAI-1比值这两项指标,在心脑血管事件的预防和治疗方面具有重要意义。     

脑心通胶囊对急性冠脉综合征患者纤溶活性及内皮功能的影响

目的 探讨脑心通胶囊对急性冠脉综合征患者纤溶活性及内皮功能的影响.方法 随机分组,脑心通治疗组31例和对照组30例,ELISA测定急性冠脉综合征患者血浆vWF水平,用发色底物法测定血浆t-PA和PAI-Ⅰ的活性.结果 患者应用脑心通前后血浆vWF和PAI-Ⅰ水平显著降低,而t-PA活性则显著增加,与对照组比较有显著差异(P＜0.05).结论 脑心通胶囊可以改善急性冠脉综合征患者纤溶活性及内皮功能.     

图式的激活补缺在阅读前教学中的运用

阅读能力的培养是英语教学的主要目标.根据图武理论,为了达到最佳效果,在阅读时须及时建立、调用、激活和丰富读者相关图式.结合教学实践,重点介绍了在阅读前教学中如何激活学生已有的图式,从而提高阅读教学质量和学生的阅读能力.     

新型橡胶硫化促进剂的合成与应用研究

本组曾合成了过渡金属与黄原酸钾衍生物、与三聚硫氰酸衍生物、与哌嗪衍生物、与巯基苯并噻唑衍生物的配合物，并对其中的ＺＤＭ、ＺＣＺ进行了工业应用试验．结果表明，这两种化合物是新型高效硫化促进剂，值得推广应用．     

The relationship between plasma androgens (dehydroepiandrosterone sulfate and testosterone), insulin,coagulation and fibrinolytic factors in men with coronary arteriosclerosis

Thrombosis plays an important role in the pathogenesis of myocardial infarction and stroke. It is known that a decrease in estradiol plasma concentration in postmenopausal women results in an increase in fibrinogen, plasminogen activator inhibitor (PAI) and tissue-type plasminogen activator (tPA) concentrations, whereas estradiol replacement therapy decreases the plasma concentrations of these factors. In men, the risk of developing myocardial infarction is higher than in premenopausal women. However, the role of male sex hormones in the pathogenesis of arteriosclerosis, although the subject of many studies, has not yet been elucidated. The aim of this study was to determine the plasma levels of and correlation between androgens, insulin, coagulation and fibrinolytic factors in men with coronary arteriosclerosis with and without a history of myocardial infarction. The study was carried out in a group of 109 non-obese men, aged 28-60 years, with coronary artery disease demonstrated by coronary angiography. In this group, 64 men had a history of one myocardial infarction and ten reported two or more such episodes. The control group consisted of 14 volunteers, who were healthy men aged 39-63 years with normal body weight. In men with coronary arteriosclerosis, the plasma levels of dehydroepiandrosterone sulfate (DHEAS) and testosterone were lower, whilst insulin, fibrinogen, PAI, PAI activity and lipoprotein(a) were higher in comparison with the group of healthy controls. We found that, in men with coronary arteriosclerosis, those with the highest incidence of infarction demonstrated the most advanced hyper-insulinism, had lower levels of DHEAS and testosterone, the highest fibrinogen plasma concentrations, as well as PAI-1, tPA and PAI activity. A positive correlation between insulin, PAI-1, tPA and fibrinogen has been shown. In conclusion, low androgen and high insulin concentrations, high PAI-1 and PAI activity, high tPA and fibrinogen concentration may be prognostic indicators of myocardial infarction in men with arteriosclerosis.