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.     

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.     

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。     

动脉粥样硬化性心脑血管疾病患者血浆脂蛋白(a)水平与纤溶活性的关系

目的 :为了研究动脉粥样硬化性心脑血管疾病患者血浆脂蛋白 (a)水平与纤溶活性的关系 ,探讨脂蛋白 (a)促血栓形成和致动脉粥样硬化的机理。方法 :分别测定 4 2例心肌梗塞患者、4 2例心绞痛患者、4 4例脑梗塞患者及 38名健康对照者的脂蛋白 (a)浓度、组织型纤溶酶原激活剂 (tPA[lj1])及其抑制物 (PAI)活性 ,并分析其相关性。结果 :各组动脉粥样硬化性心脑血管疾病患者血浆脂蛋白 (a)浓度和PAI活性明显升高 ,tPA活性明显降低 ;各组脂蛋白 (a)与PAI活性均呈显著正相关。结论 :血浆高脂蛋白 (a)浓度是动脉粥样硬化性心脑血管疾病的主要危险因素之一 ,脂蛋白 (a)水平的升高与纤溶活性低下有关     

超敏CRP和血脂在糖尿病并发大血管病变中的临床应用研究

目的:研究血清超敏C-反应蛋白(Hs-CRP)和血脂与糖尿病并发大血管病变的关系。方法:对健康对照组105例以及119例糖尿病患者(其中并发大血管病变者51例,无大血管病变68例)检测血清Hs-CRP、TC、TG、HDL-C和LDL-C。结果:Hs-CRP健康对照组为1.05±0.59,与糖尿病无论合并大血管病变与否均有显著性增高(P<0.01)。糖尿病合并大血管病变组TC、TG、LDL-C比健康对照组有显著性增高(P<0.01),而HDL-C三组之间无显著性差异。结论:Hs-CRP、TC、TG和LDL-C与糖尿病并发大血管病变有密切关系,而HDL-C与糖尿病并发大血管病变没有关联,因而血清超敏CRP与TC、TG及LDL-C联合检测对大血管并发症的检测、预防和治疗具有很好的价值。     

三氯乙烯药疹样皮炎患者血脂水平与肝损害的关系

目的:观察三氯乙烯(TCE)药疹样皮炎患者血脂水平变化与肝损害的关系。方法:采用奥林巴斯AU-400生化仪对38例TCE致药疹样皮炎患者及随机选取的40例健康人群的ALT、AST、TC、TG、HDL-C、LDL-C水平进行检测,用t检验方法作统计分析。结果:TCE组ALT、AST水平明显升高,TC、HDL-C、LDL-C水平明显降低。结论:TCE药疹样皮炎患者胆固醇合成受损,血脂水平与ALT、AST水平呈负相关。     

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.     

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.     

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。     

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。     

Relationships between serum lipid, lipoprotein, triglyceride-rich lipoprotein, and high-density lipoprotein particle concentrations in post-renal transplant patients

Objective:Disturbances in lipid and lipoprotein profiles in patients after kidney transplantation (Tx) are still not understood. Methods:Serum levels of lipids,lipoprotein,triglyceride-rich lipoproteins (TRLs),and high-density lipoprotein (HDL) particles were determined,lipid and lipoprotein ratios were calculated,and their relationships in Tx patients with hypertriglyceridemia (HTG) and lower apolipoprotein AI (apoAI) concentration were examined. Serum lipid and lipoprotein levels were measured in 109 Tx p...     

High expression of FABP4 in colorectal cancer and its clinical significance

Objective:To investigate the relationship between the fatty acid-binding protein 4(FABP4)and colorectal cancer(CRC).Methods:Using an enzyme-linked immunosorbent assay(ELISA),we measured the expression of FABP4 in plasma of50 patients who underwent surgery for CRC from October 2017 to May 2018 and 50 healthy controls.The content of the visceral fat area(VFA)as seen with abdominal computed tomography(CT)scanning was measured by ImageJ software.The expression levels of FABP4,E-cadherin,and Snail proteins in CRC and adjacent tissues were determined by immunohistochemistry.Results:The mean concentration of plasma FABP4 of CRC patients was higher than that of the control group(22.46 vs.9.82 ng/m L;P<0.05).The concentration of plasma FABP4 was related to the tumor,node,metastatis(TNM)stage and lymph node metastasis and was independent of age,body mass index(BMI),tumor size and location,and the degree of differentiation of CRC.The concentration of plasma FABP4 was positively correlated with high VFA and lipoprotein-a(LPA)(P<0.05);but it was not correlated with total cholesterol(TG),total triglyceride(TC),low-density lipoprotein(LDL),high-density lipoprotein(HDL),or apolipoprotein AI(Apo-AI).The expression of FABP4 protein in CRC tissues was positively correlated with the degree of CRC differentiation,tumor stage,and lymph node metastasis.The level of FABP4 protein was negatively correlated with E-cadherin protein(r=-0.3292,P=0.0196)and positively correlated with Snail protein(r=0.5856,P<0.0001).Conclusions:High LPA and VFA were risk factors for increased plasma FABP4 in CRC patients.FABP4 protein was highly expressed in CRC tissues and associated with TNM stage,differentiation,and lymph node metastasis of CRC.The level of FABP4 in CRC tissue was correlated with E-cadherin and Snail expression,suggesting that FABP4 may promote CRC progression related to epithelial-mesenchymal transition(EMT).     

A preliminary evaluation of VEGF-A,VEGFR1 and VEGFR2 in patients with well-controlled type 2 diabetes mellitus

Objective

Decompensated chronic hyperglycemia often leads to late microvascular complications such as retinopathy, diabetic foot syndrome, and diabetic kidney disease. The aim of this study was to determine the concentration of vascular endothelial growth factor A (VEGF-A) and its receptors in patients with well-controlled diabetes.

Methods

The study was conducted on 31 patients with well-controlled type 2 diabetes without micro-or macroangiopathy. Thirty healthy volunteers were enrolled in a control group. Serum concentrations of VEGF-A, VEGF receptors 1 and 2 (VEGFR1 and VEGFR2), fasting glucose, and lipid profiles were measured, and the plasma concentration of glycated hemoglobin (HbA1c) was determined.

Results

No significant differences were observed between the concentration of VEGF-A, VEGFR1 or VEGFR2 in the subject group and that in the control group. Positive correlations were noted between the levels of VEGF-A, VEGFR2, and triglyceride, and there was a negative correlation between the levels of VEGFR2 and high-density lipoprotein (HDL)-cholesterol in the study group.

Conclusions

The concentrations of VEGF-A and its receptors 1 and 2 in patients with well-controlled diabetes are comparable to those of healthy individuals, which may indicate that appropriate control of glucose levels delays the occurrence of vascular complications. A negative correlation between VEGFR2 and HDL-cholesterol levels, and positive correlations between VEGF-A, VEGFR2, and triglyceride levels, suggest that lipid abnormalities occurring in diabetes may be involved in the modulation of angiogenesis.     

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.     

40例Ⅱ型糖尿病人血脂分析

该文对４０例非胰岛素依赖型糖尿病（ＮＩＤＤＭ）人进行研究,就血脂ＴＧ、ＴＣ、脂蛋白ＨＤＬ－Ｃ、ＬＤＬ－Ｃ、ＶＬＤＬ－Ｃ。载脂蛋白ＡＰＯＡＩ、ＡＰＯＢ水平与２０例年龄、平均体重指数（ＢＭＩ）相当的正常健康人进行对照,测得ＮＩＤＤＭ组的ＴＧ、ＴＣ比正常对照组高,两组之间差异显著。作者检测的结果表明,用ＡＰＯＡＩ／ＡＰＯＢ和ＬＯＬ－Ｃ／ＨＤＬ－Ｃ的比值来比较,比单项测定结果的差异更显著,是判别ＮＩＤＤＭ病人动脉粥样硬化更良好的指标。