心房颤动血清Lp-PLA2、BNP与疾病严重程度相关性分析

摘要 目的：分析心房颤动血清脂蛋白磷脂酶（A2Lp-PLA2）、脑钠肽（BNP）与疾病严重程度相关性分析,进而为此类疾病诊疗提供参考。方法：以本院住院诊疗的110例心血管疾病患者为主体,控制研究时间为2018年8月-2021年8月,全部患者诊疗资料均保存完整且根据有无房颤分为房颤组、无房颤组,各组均有55例。检测全部患者血清Lp-PLA2、BNP水平,同时实施超声心动图、心电图检查。结果：无房颤组血清Lp-PLA2、BNP水平显著较房颤组低,（P＜0.05）;无房颤组LVEDD、LAD水平明显高于房颤组,LVEF、E/A明显低于房颤组,（P＜0.05）;无房颤组患者中,心功能Ⅱ级、Ⅲ级、Ⅳ级患者的血清Lp-PLA2、BNP均明显低于房颤组中心功能Ⅱ级、Ⅲ级、Ⅳ级的患者,（P＜0.05）;血清Lp-PLA2与LVEDD呈负相关（r=-0.867,P＜0.05）,与LAD呈负相关（-0.609,P＜0.05）,与LVEF呈正相关（r=0.657,P＜0.05）,与E/A呈正相关（r=0.785,P＜0.05）,与心功能等级呈正相关（r=0.759,P＜0.05）;BNP与LVEDD呈负相关（r=-0.769,P＜0.05）,与LAD呈负相关（-0.701,P＜0.05）,与LVEF呈正相关（r=0.645,P＜0.05）,与E/A呈正相关（r=0.724,P＜0.05）,与心功能等级呈正相关（r=0.729,P＜0.05）。结论：血清Lp-PLA2、BNP水平与心房颤动患者疾病严重程度密切相关,血清Lp-PLA2、BNP、心脏功能指标均参与了疾病的病理生理过程,其中血清Lp-PLA2和BNP与LVEF、E/A呈正相关,与LAD、LVEDD呈负相关,故临床认为血清Lp-PLA2、BNP是预测心房颤动患者风险程度的敏感指标,通过检测该指标水平,可了解机体心功能情况,有利于早期诊断疾病及评估病情发展情况。     

慢性心力衰竭患者彩色多普勒超声心功能参数与血清同型半胱氨酸水平的相关性研究

目的:探讨慢性心力衰竭(CHF)患者彩色多普勒超声的心功能参数与血清同型半胱氨酸水平的相关性。方法:选取2016年2月至2017年6月期间我院收治的CHF患者73例作为研究组,选取同期体检的健康志愿者70例作为对照组。检测两组血清同型半胱氨酸(Hcy)及氨基末端B型利钠肽前体(NT-proBNP)水平,采用彩色多普勒超声测定两组心脏左室射血分数(LVEF)及左室舒张末期内径(LVEDd)。分析CHF患者血清Hcy水平与NT-proBNP、LVEF、LVEDd的相关性,观察不同血清Hcy水平CHF患者心血管事件发生情况。结果:研究组血清Hcy、NT-proBNP及LVEDd显著高于对照组,LVEF显著低于对照组(P0.05)。Ⅳ级患者血清Hcy、NT-proBNP、LVEDd水平高于Ⅱ级与Ⅲ级,且Ⅲ级高于Ⅱ级(P0.05);Ⅳ级患者LVEF水平低于Ⅱ级与Ⅲ级,且Ⅲ级低于Ⅱ级(P0.05)。由Pearson相关性分析可得,CHF患者血清Hcy水平与血清NT-proBNP、LVEDd呈正相关,与LVEF呈负相关(P0.05)。血清Hcy水平高于25μmol/L的患者心血管事件发生率为31.43%,血清Hcy水平在15μmol/L-25μmol/L范围内的患者心血管事件发生率为10.53%,差异有统计学意义(P0.05)。结论:CHF患者血清Hcy、NT-proBNP、LVEDd随心功能恶化程度增加而升高,LVEF随之降低,且Hcy水平越高,患者预后越差。     

脑钠肽和D二聚体对老年心功能不全严重程度的关系及预后的影响

目的：探讨BNP和D二聚体对老年心功能不全严重程度的关系及预后的影响。方法：以2010年1月-2012年12月来我院就诊的慢性心功能不全患者为观察对象,根据心功能不全程度分为无症状组、心功能不全II级、III级、IV级3,另取健康体检者为对照,比较各组间BNP、D二聚体水平及相关性分析。结果：各患者组BNP和D二聚体水平与对照组相比明显增加（P〈0．05）;BNP与心功能不全分级、LVEDD、LAD呈直线正相关关系（P〈0．05）,与LVEF呈直线负相关关系（P〈0．05）;D二聚体与心功能不全分级、LVEDD呈直线正相关关系（P〈0．05）,与LVEF呈呈直线负相关关系（P〈0．05）,与LAD直线关系无统计学意义（P〉0．05）;BNP水平1000pg／mL以下治疗有效率80．2％,疗效优于1000pg／mL以上者（Riditz=15．245,P=0．000）,D二聚体5μg／mL以下者治疗有效率85．4％,疗效优于5μg／mL以上者（Riditz=26．354,P=0．000）。结论：BNP和D二聚体与老年心功能不全严重程度和超声心动图指标密切相关,可以作为疾病预后预测。     

甲状腺功能亢进性心脏病患者血清BNP及CRP水平及其与心功能的关系

目的:研究甲亢性心脏病患者血清BNP(B-type natriuretic peptide)与CRP(C-reaction protein)水平及其与心功能的关系。方法:选择2015年10月至2017年3月在我院进行治疗的甲亢性心脏病患者68例作为观察组,同期选择在我院进行常规体检的健康者35例作为对照组。采用免疫放射法检测血清BNP水平,免疫比浊法检测血清CRP水平。比较两组血清BNP、CRP水平的差异及不同心功能甲亢性心脏病患者血清BNP、CRP水平,分析血清BNP、CRP水平与甲亢性心脏病患者心功能的相关性。结果:观察组血清BNP、CRP水平明显高于对照组,差异具有统计学意义(P0.05);观察组心功能Ⅱ级患者血清BNP、CRP水平明显高于心功能Ⅰ级患者(P0.05);心功能Ⅲ级患者血清BNP、CRP水平明显高于心功能Ⅱ级患者(P0.05);心功能Ⅳ级患者血清BNP、CRP水平明显高于心功能Ⅲ级患者(P0.05);观察组治疗后血清BNP、CRP水平较治疗前显著降低,差异具有统计学意义(P0.05)。甲状性功能亢进性心脏病患者血清BNP、CRP水平均与其心功能等级呈显著正相关(r=0.742,P=0.037;r=0.857,P=0.011)。结论:甲亢性心脏病患者血清BNP与CRP水平均显著升高,可能用于甲亢并发甲亢性心脏病的早期诊断及心功能评估的重要参考指标。     

心脏彩超评估高血压左心室肥厚伴左心衰竭患者心功能的临床价值及与NYHA分级的关系研究

目的:探讨心脏彩超评估高血压左心室肥厚(LVH)伴左心衰竭患者心功能的临床价值,分析其超声指标与美国纽约心脏病协会(NYHA)分级的相关性。方法:选择2017年5月至2018年5月我院收治的127例高血压LVH伴左心衰竭患者为观察组,根据NYHA分级将其分为NYHAⅡ级组(41例)、Ⅲ级组(47例)、Ⅳ级组(39例),另选择100例体检的健康志愿者为对照组。所有受试者均接受心脏彩超获得相关参数[左心房内径(LAD)、左心室舒张末期内径(LVEDD)、左心室收缩末期内径(LVESD)、左心室短轴缩短率(LVFS)、左心室后壁厚度(LVPWT)、室间隔厚度(IVST)、左心室射血分数(LVEF)、左心室舒张早期充盈峰最大充盈速度/舒张晚期充盈峰最大峰值速度(E/A)比值、Tei指数],分析心脏彩超相关参数与NYHA分级之间相关性。结果:观察组患者LAD、LVEDD、LVESD、LVPWT、IVST、Tei指数高于对照组(P0.05),LVFS、LVEF、E/A比值低于对照组(P0.05)。Tei指数随着NYHA分级增高而增高(P0.05),LVFS、LVEF、E/A比值随着NYHA分级增高而降低(P0.05)。Spearman秩相关分析结果显示,Tei指数与NYHA分级呈正相关(rs=0.398,P0.05),LVFS、LVEF、E/A比值与NYHA分级呈负相关(rs=-0.285,-0.442,-0.305,P0.05)。结论:高血压LVH伴左心衰竭患者发生明显左室肥厚和左心功能降低,心脏彩超可准确评估高血压LVH伴左心衰竭患者的心功能和病情严重程度,且部分心脏彩超相关参数与NYHA分级相关。     

老年慢性心力衰竭患者肿瘤坏死因子、脑钠肽水平变化及其相关性分析*

摘要目的：探讨老年慢性心力衰竭（CHF）肿瘤坏死因子琢（TNF-α）以及脑利钠肽水平的变化,并对其进行相关性分析。方法：选 择老年CHF患者59 例,根据心功能分级,Ⅱ级19 例,Ⅲ级25 例,Ⅳ级15 例;另选心功能正常的老年人36例。所有入选者予以血 清BNP、TNF-α测定,并采用彩色多普勒超声测定左心室舒张末内径并计算左室射血分数（LVEF）。结果：与对照组比较,CHF组 心功能Ⅲ、Ⅳ级患者TNα-琢水平明显升高（P＜0.05）,心功能Ⅱ、Ⅲ、Ⅳ级患者血BNP水平明显升高（P＜0.05）,并随心功能分级加 重而增加。血TNF-α水平与BNP 呈正相关（r=0.57,P＜0.05）。CHF患者中血清TNF-α和BNP 水平与LVEF比较均呈负相关 （r=-0.48, r=-0.64, P＜0.05）。结论：老年CHF患者血TNF-α显著升高,并与BNP及LVEF关系密切,是反应CHF患者心功能恶化 的重要预测指标。     

扩张型心肌病慢性心力衰竭患者血浆脑利钠肽水平的临床意义

目的:探究扩张型心肌病慢性心力衰竭患者血浆脑利钠肽水平的临床意义。方法:收集2012年3月至2016年3月我院收治的90例扩张型心肌病慢性心力衰竭患者,将患者按照NYHA心功能分级分为A组(II级)20例、B组(III级)38例、C组(IV级)32例。比较各组患者的血浆脑力钠肽(BNP)以及超声心动图相关指标,包括左心室射血分数(LVEF)、左心房内径(LA)、左室舒张末期内径(LVEDD)以及左室收缩末期内径(LVESD),分析血浆BNP与NYHA分级和超声心动图相关指标的相关性,以及比较血浆BNP和LVEF在慢性心力衰竭病情程度中的能力。结果:C组患者的血浆BNP浓度显著高于A组和B组(P0.05),而B组患者的血浆BNP浓度显著高于A组,比较差异具有统计学意义(P0.05)。心脏超声检测发现,C组患者的LA显著高于A组(P0.05),而LVEF、LVEDD及LVESD比较差异无统计学意义(P0.05)。血浆BNP与NYHA分级呈正相关关系,但与LVEDD、LVESD、LVEF、LA无明显相关关系(P0.05)。血浆BNP对评价心力衰竭患者病情程度呈现出较强的能力(受试者工作特征曲线下面积=0.902,P0.001)。血浆BNP=523.5 pg/mL为中重度心力衰竭患者的诊断最佳值。LVEF对评价心力衰竭患者病情程度无明显能力(受试者工作特征曲线下面积=0.392,P=0.276)。结论:血浆BNP浓度对扩张型心肌病慢性心力衰竭患者的诊断、筛查以及心功能分级具有重要的临床意义。     

超声心动图与血浆BNP、和肽素、hs-CRP对慢性心力衰竭患者心功能的评估价值分析

目的:研究超声心动图与血浆脑钠肽(BNP)、和肽素及超敏C反应蛋白(hs-CRP)对慢性心力衰竭(CHF)患者心功能的评估价值。方法:将我院从2017年3月～2020年3月收治的100例CHF患者纳入研究。将其按照美国纽约心脏病协会(NYHA)分级标准分成Ⅰ级33例,Ⅱ级21例,Ⅲ级25例,Ⅳ级21例。对所有患者均进行超声心动图检查,分析相关参数的差异。检测并对比所有患者血浆BNP、和肽素以及hs-CRP水平。采用Pearson相关性分析超声心动图相关参数与血浆BNP、和肽素及hs-CRP水平的关系。结果:心功能分级Ⅰ～Ⅳ级患者的左室射血分数(LVEF)呈逐渐降低趋势,而左房内径(LAD)及左室舒张末期内径(LVEDD)均呈逐渐升高趋势(P0.05),血浆BNP、和肽素及hs-CRP水平均呈逐渐升高趋势(P0.05)。经Pearson相关性分析可得:CHF患者LVEF与血浆BNP、和肽素及hs-CRP均呈负相关(r=-0.621、-0.534、-0.635,P0.05),而LAD、LVEDD与血浆BNP、和肽素及hs-CRP均呈正相关(r=0.582、0.602、0.511,r=0.547、0.592、0.615,P0.05)。结论:超声心动图及血浆BNP、和肽素、hs-CRP用于评估CHF患者心功能均效果显著,且联合检测具有协同互补的作用,实现对CHF患者病情严重程度更为精准的评估。     

老年慢性心力衰竭患者肿瘤坏死因子、脑钠肽水平变化及其相关性分析

目的：探讨老年慢性心力衰竭（CHF）肿瘤坏死因子α（TNF-α）以及脑利钠肽水平的变化,并对其进行相关性分析。方法：选择老年CHF患者59例,根据心功能分级,Ⅱ级19例,Ⅲ级25例,Ⅳ级15例;另选心功能正常的老年人36例。所有入选者予以血清BNP、TNF-α测定,并采用彩色多普勒超声测定左心室舒张末内径并计算左室射血分数（LVEF）。结果：与对照组比较,CHF组心功能Ⅲ、Ⅳ级患者TNF-α水平明显升高（P〈0．05）,心功能Ⅱ、Ⅲ、Ⅳ级患者血BNP水平明显升高（P〈0．05）,并随心功能分级加重而增加。血TNF-α水平与BNP呈正相关（r=0．57,P〈0．05）。CHF患者中血清TNF-α和BNP水平与LVEF比较均呈负相关（F-0．48,r=-0．64,P〈0．05）。结论：老年CHF患者血TNF-α显著升高,并与BNP及LVEF关系密切,是反应CHF患者心功能恶化的重要预测指标。     

厄贝沙坦对慢性心力衰竭患者血清骨桥蛋白水平的影响

目的:探讨厄贝沙坦对心力衰竭(心衰)患者血清骨桥蛋白(OPN)水平及心功能的影响.方法:选择心衰患者106例,随机分为两组,并随机接受厄贝沙坦治疗,每组均为53例,常规治疗组,予以利尿剂、洋地黄制剂和β受体阻滞剂常规治疗,厄贝沙坦组,在常规治疗下加用厄贝沙坦150 mg/d,治疗12周,比较治疗前后各组患者血清OPN、B型利钠肽(BNP)水平、左室射血分数(LVEF)及左室舒张末内径(LVEDd).结果:心衰患者随着心衰程度的加重,血清OPN、BNP水平及LVEDd逐渐升高,而LVEF逐渐降低(P＜0.0l);与治疗前相比,治疗后两组患者血清OPN及BNP水平均明显降低(P＜0.01),而LVEF升高,LVEDd降低(P＜0.05),但厄贝沙坦组OPN、BNP水平及LVEF、LVEDd较常规治疗组变化更显著(P＜0.05).结论:OPN可反映心衰严重程度及判断患者的预后,在常规心衰治疗的基础上加服厄贝沙坦能进一步降低血清OPN水平,改善心功能及心衰患者的预后.     

Cardiac alpha-crystallin

Summary A major component of the soluble fraction of rat heart is a homopolymer (M_r about 400–650 k) of a small protein (M_r about 20 k). This cardiac protein, which is highly homologous to alpha-B-crystallin, was isolated in its native state and visualized by electron microscopy. A homogeneous population of globular particles with an average diameter of about 14-16 nM could be seen using either negative staining or rotary shadowing procedures. The structures were globular in nature with a central depression (torus-like structures). Polyclonal antibodies, raised against the cardiac crystallin, were used for the immunocytochemical localization of the macromolecular complexes. Using fluorescent secondary antibodies, a clear and sharp striation of fixed and permeabilized rat heart myocytes could be observed, similar to that observed with anti-desmin antibodies and characteristic for the central region of the I-band. Cardiac crystallin was not found associated with F-actin in preparations of rat heart myofibrils. On the other hand, it was a major contaminant of cardiac desmin preparations. These observations suggest that cardiac crystallin is involved in the organization of cytoskeletal filaments of the Z-lines.Abbreviations SDS Sodium Dodecyl Sulfate - SDS-PAGE SDS-Polyacrylamide Gel Electrophoresis - PMSF Phenyl Methyl Sulfonyl Fluoride - MOPS 3-Morpholino Propanesulfonic Acid - TX-100 Octyl Phenoxy Polyethoxyethanol - CHAPS (3-((3-Cholamidopropyl)Dimethylammonio)-1-Propanesulfonate), - BSA Bovine Serum Albumin - FITC Fluorescein Isothiocyanate - PO Peroxidase     

Cardiac alpha-crystallin

Rat hearts were perfused in the working heart or Langendorff mode and then subjected to total normothermic ischemia. The content of alpha-crystallin in the water soluble protein fraction obtained from these hearts diminished in a time-dependent manner during ischemia. The protein was recovered in the low g pellet of the homogenate. The redistribution was dramatic, selective for alpha-crystallin and irreversible. Large crystallin clumps formed also when exposing the soluble protein fraction of control hearts to slightly acidic pH (6.5-7.0). Electron microscopic analysis showed that aggregation of the globular homo-oligomeric units of crystallin occurred. The aggregates probably represented denatured protein and were similar in appearance to lenticular alpha H-crystallin. In purified form, however, cardiac crystallin particles did not cluster at pH 6.5. Aggregation only occurred in the presence of other protein components (including, probably, cytosolic actin) of the soluble fraction. A direct and selective interaction between actin and cardiac crystallin could be demonstrated using actin-Sepharose affinity chromatography procedures. The results suggest that large aggregates of cardiac crystallin form very early during ischemia, due to acidification of the cytosol. Cardiac crystallin is highly homologous to stress proteins and is localized on the Z-disks, where it plays probably a structural or protective role. Its rapid and complete denaturation could be involved in the genesis of the irreversible structural damages occurring during ischemia.     

Cardiac alpha-crystallin

A major component of the soluble fraction of rat heart is a homopolymer (Mr about 400-650 k) of a small protein (Mr about 20 k). This cardiac protein, which is highly homologous to alpha-B-crystallin, was isolated in its native state and visualized by electron microscopy. A homogeneous population of globular particles with an average diameter of about 14-16 nM could be seen using either negative staining or rotary shadowing procedures. The structures were globular in nature with a central depression (torus-like structures). Polyclonal antibodies, raised against the cardiac crystallin, were used for the immunocytochemical localization of the macromolecular complexes. Using fluorescent secondary antibodies, a clear and sharp striation of fixed and permeabilized rat heart myocytes could be observed, similar to that observed with anti-desmin antibodies and characteristic for the central region of the I-band. Cardiac crystallin was not found associated with F-actin in preparations of rat heart myofibrils. On the other hand, it was a major contaminant of cardiac desmin preparations. These observations suggest that cardiac crystallin is involved in the organization of cytoskeletal filaments of the Z-lines.