慢性肾功能衰竭患者血浆脂蛋白(a)与纤溶活性的相关性

目的:研究慢性肾功能衰竭患者血浆脂蛋白(a)与纤溶活性的关系.方法:应用酶联免疫吸附法分别测定58例慢性肾功能衰竭患者及51名健康对照者的血浆脂蛋白(a)浓度,并以底物显色法测定其组织型纤溶酶原激活剂(tPA)及其抑制物(PAI)活性.结果:慢性肾功能衰竭患者血浆脂蛋白(a)浓度和PAI活性明显升高,tPA活性明显降低;脂蛋白(a)浓度与血浆尿素氮水平、PAI活性均呈正相关;脂蛋白(a)浓度与tPA活性呈负相关.结论:肾功能对血浆脂蛋白(a)浓度起一定的调节作用,脂蛋白(a)水平的升高与纤溶活性低下有关.     

用尿激酶、去纤酶治疗急性心肌梗塞时体内纤溶系统的改变

本文对25例用尿激酶、15例用去纤酶溶栓治疗的急性心肌梗塞患者体内的组织型纤溶酶原激活剂(tissue Plasminogen Activator,t-PA)的含量、活性及纤溶酶原激活剂抑制物(Plasminogen Activator Inhibitor,PAI)的活性在治疗前后的改变进行了动态观察。结果表明:(1)尿激酶可以显著地提高t-PA的活性,降低PAI的活性,这种作用在用药后0.5h最明显,维持4h左右,去纤酶则无此作用。(2)尿激酶组的再通率(76％)显著高于去纤酶组的再通率(20％),住院病死率12％,低于去纤酶组20％。两组的出血并发症相等,均为20％。提示:尿激酶可以有效地提高急性心肌梗塞患者的纤溶活性,去纤酶用于溶栓治疗可能无效。     

老年缺血性脑卒中患者血清载脂蛋白与组织型纤溶酶原激活剂及其抑制物的相关性

目的：探讨载脂蛋白A1、B100与老年缺血性脑卒中患者组织型纤溶酶原激活剂（t—PA）及其抑制物（PAI）活性的关系。方法：对52例老年缺血性脑卒中患者和50例健康人用免疫比浊法测定血清载脂蛋白A1、B100浓度，并以发色底物法测定血浆组织型纤溶酶原激活剂及抑制物的活性。结果：老年缺血性脑卒中患者载脂蛋白B100，纤溶酶原激活剂抑制物的活性显著高于对照组（P〈0．05和P〈0．01），载脂蛋白A1与组织型纤溶酶原激活剂均降低（P〈0．05和P〈0．01），相匹配的缺血性脑卒中及对照组19例的相关分析发现载脂蛋白B100与组织型纤溶酶原激活剂活性无关，而与纤溶酶原激活剂抑制物活性呈正相关（r=0．8330），载脂蛋白A1与纤溶酶原激活剂抑制物活性呈负相关（r=-0．6734）。结论：载脂蛋白A1、B100浓度与纤溶酶原激活剂抑制物活性之间存在相关关系，而载脂蛋白B100与纤溶酶原激活剂抑制物呈正相关，载脂蛋白A1与纤溶酶原激活剂抑制物活性呈负相关。     

心脑血管疾病患者血浆脂蛋白(a)及其他脂类水平的观察

目的:探讨心脑血管疾病患者脂蛋白(a)水平及其他脂类的关系,进一步阐明血浆高脂蛋白(a)水平为心脑血管疾病的独立危险因素,支持脂蛋白(a)的检测具有极为重要的意义.方法:采用ELISA法和酶法分别测定心肌梗塞、心绞痛、脑梗死等心脑血管疾病患者及健康对照者的Lp(a)、LDL-C、HDL-C、TG、TC含量.结果:心脑血管疾病患者血浆Lp(a)水平显著高于健康对照组(P＜0.01).血浆脂蛋白(a)水平变化与LDL-C、HDL-C、TG、TC含量无明显相关性.结论:Lp(a)是独立于其他血脂指标的心脑血管疾病的危险因子.     

心脑血管疾病患者血浆脂蛋白(a)及其他脂类水平的观察

目的:探讨心脑血管疾病患者脂蛋白(a)水平及其他脂类的关系,进一步阐明血浆高脂蛋白(a)水平为心脑血管疾病的独立危险因素,支持脂蛋白(a)的检测具有极为重要的意义.方法:采用ELISA法和酶法分别测定心肌梗塞、心绞痛、脑梗死等心脑血管疾病患者及健康对照者的Lp(a)、LDL-C、HDL-C、TG、TC含量.结果:心脑血管疾病患者血浆Lp(a)水平显著高于健康对照组(P＜0.01).血浆脂蛋白(a)水平变化与LDL-C、HDL-C、TG、TC含量无明显相关性.结论:Lp(a)是独立于其他血脂指标的心脑血管疾病的危险因子.     

脂蛋白(a)与脑梗塞的关系

目的研究脑梗塞患者血浆脂蛋白(a)水平.方法以酶联免疫吸附法(ELISA)测定44例脑梗塞患者与38名健康人血浆脂蛋白(a)浓度.结果脑梗塞患者的脂蛋白(a)浓度显著高于正常健康人.结论血浆高脂蛋白(a)水平是脑梗塞的重要危险因素.     

蕲蛇酶对脑梗塞患者血浆t—PA、PAI活性的影响

蕲蛇酶具有降解纤维蛋白原、降低血粘度及改善微循环等作用,对脑梗塞有治疗作用组织型纤溶酶原激活物(1-PA)及纤溶酶原激活物抑制物(PAI)是反映机体纤溶系统功能状况的两个重要指标。本研究通过测定脑梗塞患者蕲蛇酶治疗前后血浆t-PA、PAI活性来了解该药对机体纤溶系统的影响。1 临床资料1.1 一般资料 全部病例按全国第二届脑血管病会议通过的诊断标准诊断为急性脑梗塞患     

D-二聚体检测的临床作用及展望

D-二聚体(D-Dimer)是纤溶酶作用于交联蛋白的特异性分子标志物,血浆D-Dimer的含量增高与否可以反映凝血和纤溶系统的激活状况,也可以用来区分原发性和继发性纤溶亢进.D-Dimer的定量测定对于血栓性疾病、恶性的肿瘤性疾病、肝脏类的疾病、肾脏类的疾病等的早期发现、初步鉴别、治疗过程监测和预后的判断有着极其重要的临床价值,特别是在深静脉血栓(DVT)形成和肺栓塞(PE)形成的区别上起到了不可忽视的作用.     

慢性肾功能衰竭患者及健康人血浆脂蛋白(α)水平

目的:为了研究血浆脂蛋白(α)[Lp(α)]水平与慢性肾功能衰竭(CRF)的关系,探讨Lp(α)在CRF(常)合并心脑血管疾病中的作用.方法:用酶联免疫吸附法测定了36例CRF与30名健康对照者的Lp(α)浓度,并同时测定了TG、TC、LDL-C和HDL-C的含量.结果:CRF患者Lp(α)、TC、LDL-C水平均明显高于正常对照组,而HDL-C显著低于对照组,血浆Lp(α)水平变化与LDL-C、HDL-C、TG、TC含量无明显相关性.结论:CRF患者体内存在着Lp(α)等脂代谢紊乱的情况,高血浆Lp(α)水平是CRF合并心脑血管疾病的独立危险因素之一.     

冠心病患者及健康人血浆脂蛋白(a)水平

本文以酶联免疫吸附法(ELISA)测定了54例不同类型及不同并发症的冠心病患者与30名健康人的血浆Lp(a)浓度。心肌梗塞组和心绞痛组的Lp(a)浓度均高于对照组,并发糖尿病组Lp(a)浓度显著高于其他各组,无并发症且年龄较轻者Lp(a)浓度显著高于年龄较高者。表明血浆高Lp(a)水平是冠心病的遗传危险因素,但其升高的程度不能反映冠心病的临床类型或严重程度;并发糖尿病是老年冠心病患者血浆Lp(a)浓度升高的原因之一。     

肾病综合征患者血浆脂蛋白(a)水平相关性分析

目的：研究血浆脂蛋白（a）[Lp（a）]水平与肾病综合征（NS）的关系，探讨Lp（a）在肾病综合征合并心脑血管疾病中的作用。方法：用酶联免疫吸附法分别测定了61例肾病综合征患者与55名健康对照者的Lp（a）浓度，并同时测定了BUN、Scr、TG、TC、LDL-C和HDL-C的含量。结果：肾病综合征患者Lp（a）、BUN、Scr、TC、LDL-C水平均明显高于正常对照组。而HDL-C显著低于对照组，NS组Lp（a）浓度与BUN和Scr呈显著正相关，Lp（a）水平变化与LDL-C、HDL-C、TG、TC含量无明显相关性。结论：肾病综合征患者体内存在着Lp（a）等脂代谢紊乱的情况，高血浆Lp（a）水平是肾病综合征合并心脑血管疾病的独立危险因素之一。     

Novel distribution pattern of fibrinolytic components in rabbit tissues extract： a preliminary study

Objective: The purpose of this work was to investigate the distribution pattern of fibrinolytic factors and their inhibitors in rabbit tissues. Methods: The components of the fibrinolytic system in extracts from a variety of rabbit tissues, including tissue plasminogen activator (tPA), plasminogen activator inhibitor-1 (PAI-1), plasminogen (Plg), plasmin (Pl) and α2 plasmin inhibitor (α2PI), were determined by colorimetric assay. Results: The tissue extracts in renal, small intestine, lung, brain and spleen demonstrated strong fibrinolytic function, in which high activity of tPA, Plg and Pl was manifested; whereas in skeletal muscle, tongue and stomach, higher activity of PAI-1 and α2PI showed obviously. Also excellent linear correlations were found between levels of tPA and PAI-1, Pl and α2PI, Plg and Pl. In related tissues, renal cortex and renal marrow showed distinctly higher activity of tPA and lower activity of PAI-1, with the levels of Plg and Pl in renal cortex being higher than those in renal marrow, where the α2PI level was higher than that in renal cortex. Similarly, the levels of tPA, Plg and Pl in small intestine were higher than those in large intestine, but with respect to PAI-1 and α2PI, the matter was reverse. In addition, the fibrinolytic activity in muscle tissue was lower, however, the levels of tPA, Plg, and Pl in cardiac muscle were obviously higher than those in skeletal muscles, and the levels of PAI-1 and α2PI were significantly lower than those in skeletal muscle. Conclusion: Our data demonstrate that a remarkable difference of the fibrinolytic patterns exists in rabbit tissues, which has probable profound significance in understanding the relationship between the function of haemostasis or thrombosis and the physiologic function in tissues.     

Assessment of ghrelin and leptin receptor levels in postmenopausal women who received oral or transdermal menopausal hormonal therapy

Objective  

In postmenopausal women, an increased leptin concentration and reduced levels of ghrelin and adiponectin were observed. The aim of this study was to evaluate the concentrations of the active form of ghrelin, total ghrelin, leptin receptor, lipoprotein(a) (Lp(a)), and plasminogen activator inhibitor type 1 (PAI-1) in postmenopausal women who received oral or transdermal menopausal hormonal therapy (MHT).     

冠心病患者及健康人血浆脂蛋白(a)水平

本文以酶联免疫吸附法(ELISA)测定了54例不同类型及不同并发症的冠心病患者与30名健康人的血浆Lp(a)浓度 心肌梗塞组和心绞痛组的Lp(a)浓度均高于对照组,并发糖尿病组Lp(a)浓度显著高于其他各组,无并发症且年龄较轻者Lp(a)浓度显著高于年龄较高者,表明血浆高Lp(a)水平是冠心病的遗传危险因素,但其升高的程度不能反映冠心病的临床类型或严重程度;并发糖尿病是老年冠心病患者血浆Lp(a)浓度升高的原因之一。     

缺血性脑血管病与血脂、脂蛋白水平相关性研究

目的：观察缺血性脑血管病（ICVD）患者血脂、脂蛋白的变化。方法：对113例缺血性脑血管病[包括脑梗塞（CI）急性期25例，恢复期30例，短暂性脑缺血发作（TIA）58例]和正常对照组77例进行血脂、脂蛋白测定。结果：脑梗塞组和TIA组甘油三酯（TG）、总胆固醇（TC）、载脂蛋白B100（ApoB100）、脂蛋白（a）（Lp（a））、氧化型低密度脂蛋白（OX—LDL）水平均显著高于对照组。结论：ICVD患者存在全面血脂、脂蛋白代谢紊乱。本结果对进一步了解ICVD的发病机理和治疗提供了依据，对于观察病情演变、判断预后均有重要意义。     

Association between moderately oxidized low-density lipoprotein and high-density lipoprotein particle subclass distribution in hemodialyzed and post-renal transplant patients

Disturbances in the metabolism of lipoprotein profiles and oxidative stress in hemodialyzed (HD) and post-renal transplant (Tx) patients are proatherogenic, but elevated concentrations of plasma high-density lipoprotein (HDL) reduce the risk of cardiovascular disease. We investigated the concentrations of lipid, lipoprotein, HDL particle, oxidized low-density lipoprotein (ox-LDL) and anti-ox-LDL, and paraoxonase-1 (PON-1) activity in HD (n=33) and Tx (n=71) patients who were non-smokers without active inflammatory disease, liver disease, diabetes, or malignancy. HD patients had moderate hypertriglyceridemia, normocholesterolemia, low HDL-C, apolipoprotein A-I (apoA-I) and HDL particle concentrations as well as PON-1 activity, and increased ox-LDL and anti-ox-LDL levels. Tx patients had hypertriglyceridemia, hypercholesterolemia, moderately decreased HDL-C and HDL particle concentrations and PON-1 activity, and moderately increased ox-LDL and anti-ox-LDL levels as compared to the reference, but ox-LDL and anti-ox-LDL levels and PON-1 activity were more disturbed in HD patients. However, in both patient groups, lipid and lipoprotein ratios (total cholesterol (TC)/HDL-C, LDL-C/HDL-C, triglyceride (TG)/HDL-C, HDL-C/non-HDL-C, apoA-I/apoB, HDL-C/apoA-I, TG/HDL) were atherogenic. The Spearman’s rank coefficient test showed that the concentration of ox-LDL correlated positively with HDL particle level (R=0.363, P=0.004), and negatively with TC (R=−0.306, P=0.012), LDL-C (R=−0.283, P=0.020), and non-HDL-C (R=−0.263, P=0.030) levels in Tx patients. Multiple stepwise forward regression analysis in Tx patients demonstrated that ox-LDL concentration, as an independent variable, was associated significantly positively with HDL particle level. The results indicated that ox-LDL and decreased PON-1 activity in Tx patients may give rise to more mildly-oxidized HDLs, which are less stable, easily undergo metabolic remodeling, generate a greater number of smaller pre-β-HDL particles, and thus accelerate reverse cholesterol transport, which may be beneficial for Tx patients. Further studies are necessary to confirm this.     

AMI患者PCI术后BNP相关分析及应用研究

目的:观察PCI术对AMI患者血浆中BNP的水平变化,探讨PCI对AMI患者预后的影响.方法:采用快速荧光免疫测定法对50例AMI患者PCI治疗前、治疗后7d内每日同一时间取静脉血进行BNP的测定和50例对照组血浆BNP水平进行检测.结果:AMI患者血浆BNP在行PCI术后与对照组比较有显著性差异(P<0.05),PCI治疗后呈明显下降趋势.结论:AMI患者经PCI治疗血浆BNP水平变化说明PCI术对改善AMI患者的预后有重要意义.