急性心肌梗死患者血浆N-末端脑钠肽前体水平检测及其临床意义

目的探讨急性心肌梗死(AMI)患者住院早期血浆N-末端脑钠肽前体(NT-proBNP)水平与梗死面积、心功能及住院期心脏事件的关系。方法采用ELISA法测定41例AMI患者住院后48小时内血浆NT-proBNP水平,并与患者肌酸激酶(CK)和肌酸激酶同功酶(CK-MB)峰值浓度、左室射血分数(LVEF)、住院期主要不良心脏事件(MACE)对比分析。结果AMI患者血浆NT-proBNP水平明显高于正常对照组(699.44±386.28pg/ml vs 41.75±24.26pg/ml,P<0.001)。血浆NT-proBNP水平与CK、CK-MB峰值浓度呈正相关(r=0.817,P=0.001;r=0.772,P=0.001),与LVEF呈负相关(r=-0.661,P<0.01)。住院期发生MACE患者的血浆NT-proBNP水平明显高于未发生MACE者(971.50±367.01pg/ml vs 393.60±261.16pg/ml,P<0.001)。结论AMI患者血浆NT-proBNP水平与CK、CK-MB峰值呈正相关,与LVEF呈负相关。检测血浆NT-proBNP水平可预测AMI患者梗塞面积、心功能及住院期心血管事件。     

急性心肌梗死患者血清白介素-6及肿瘤坏死因子-α水平的变化

目的:探讨白介素-6(IL-6)及肿瘤坏死因子(TNF-α)在急性心肌梗死(AMI)发病中的作用。方法:采用美国DPC公司生产的Immulite化学发光分析仪检测IL-6及TNF-α的含量。结果:AMI组治疗前IL-6、TNF-α水平分别为(49.5±13.4)pg/mL、(31.6±9.4)pg/mL,治疗后IL-6、TNF-α水平分别为(18.0±5.7)pg/mL、(29.8±8.4)pg/mL;对照组IL-6、TNF-α水平分别为(5.6±1.6)pg/mL、(5.1±1.3)pg/mL。AMI组治疗前后IL-6、TNF-α水平均显著高于对照组(P<0.001);治疗后IL-6显著下降,与治疗前比较差异有显著性(P<0.001),TNF-α治疗后,与治疗前比较差异无显著性(P>0.05)。结论:IL-6、TNF-α可能在心肌梗死的发生发展中起重要作用,可能共同参与心肌梗死的发病过程。     

微粒子酶免疫分析检测充血性心力衰竭患者血浆BNP浓度与心功能的关系

目的使用微粒子酶免疫分析检测充血性心力衰竭患者血浆BNP浓度与心功能的关系。方法按NYHA分级法随机选择60位CHF患者,使用微粒子酶免疫分析测定其入院当天血浆BNP浓度;选择30位健康成人体检者作对照组。结果CHF组血浆BNP浓度为550.2±235.1pg/ml,对照组血浆BNP浓度为38.2±22.9pg/ml,CHF组血浆BNP浓度较对照组血浆BNP浓度明显升高(P<0.001);不同心功能分级组之间有显著差异,NY鄄HAⅠ～Ⅳ级血浆BNP浓度分别为216.2±168.6pg/ml,412.9±301.5pg/ml,638.3±505.3pg/ml,1556.2±1037.4pg/ml(各组间P<0.01)。结论血浆BNP浓度可以作为诊断CHF的参考指标,随着心衰加重,血浆BNP浓度逐渐升高,与NYHA分级有正相关性。     

妊高征患者血浆内皮素—1和降钙素基因相关肽的改变

目的观察妊高征患者血浆内皮素-1和降钙素基因相关肽的变化。方法用特异性放射免疫分析法测定了50例妊高征(PIH)患者血浆内皮素-1(ET-1)和降钙素基因相关肽(CGRP)水平,以20例正常晚期妊娠孕妇做为对照组。结果PIH患者血浆ET-1水平为(70.23±10.21)pg/mg,高于对照组的(43.06±4.22)pg/mg(P＜0.001),且病情越重,含量越多。血浆CGRP为(22.32±2.31)pg/mg,明显低于对照组的(36.38±2.68)pg/mg(P＜0.01),病情越重,含量越低。ET-1含量与CGRP水平呈显著负相关(r=-0.547P＜0.001)。结论血浆内皮素升高继发降钙素基因相关肽含量降低,可能是妊高征发病因素之一。     

婴幼儿肺炎血浆内皮素检测及其临床意义探讨

本文采用放射免疫法分别检测了21例正常儿和46例婴幼儿肺炎患者血浆内皮素浓度,其中轻型16例,重症肺炎(不含心衰)11例,毛细支气管炎9例,肺炎心衰患者10例。结果显示:轻型肺炎组患者血浆内皮素浓度为36.49±14.08pg/ml,与正常对照组34.41±14.38pg/ml,无显著差异(P>0.05);重症肺炎组患者血浆内皮素浓度49.73±15.49pg/ml较正常对照组增高(P<0.01);毛细支气管炎和肺炎心衰组患者血浆内皮素浓度分别为74.03±24.50pg/ml和76.76±24.54pg/ml,明显高于正常对照组(P<0.01),且两组患者较重症肺炎增高更为显著(P<0.01),提示血浆内皮素浓度与婴幼儿肺炎轻重程度成正比,内皮素参于了重症肺炎病理生理发病过程,它可能是导致心力衰竭重要因素之一。     

帕金森病血浆内皮素测定意义探讨

目的探讨内皮素(endotelins,ET)在帕金森病(Parkinson'sdisease,PD)中的可能作用机制.方法应用放射免疫法测定PD患者及对照组血浆中ET浓度.结果PD患者血浆中ET浓度为(130.42±34.8)pg/ml,对照组为(65.28±8.97)pg/ml,两者比较差异有显著性(P<0.001).结论PD患者血浆中ET含量增高机制可能与PD发病早期的氧化应激反应有关.     

不同类型冠心病病人血浆脑钠肽检测及其意义

目的观察不同临床类型冠心病病人的血浆脑钠肽(BNP)浓度的差异及其与心肌坏死标记物的相关性,并探讨其临床意义。方法90例经冠状动脉造影证实的冠心病病人,按临床类型分为急性心肌梗死(AMI)26 例,不稳定型心绞痛(UAP)38例,稳定型心绞痛(SAP)26例。28例非冠心病者作为对照组。检测AMI病人发病16 h以及其他研究对象入院时的血浆BNP浓度,同时定量测定AMI病人的肌钙蛋白T(TnT),根据生化检查、NYHA心功能分级以及超声检测排除症状性心功能不全及肾功能不全,比较不同组别BNP的差异以及AMI组BNP与TnT的相关性。结果AMI、UAP、SAP和对照组血浆BNP浓度分别为566 23±129 53 pg/mL、172 53±61 77 pg/mL、40 06±24 33 pg/mL、35 71±24 00 pg/mL,AMI组平均BNP明显高于UAP组(P<0 001),UAP组平均BNP明显高于SAP组和对照组(P<0 001),SAP组和对照组BNP无明显差异(P>0 05)。AMI组BNP与TnT高度相关( r=0 937,P<0 001)。结论不同临床类型冠心病病人的血浆BNP浓度存在差异,BNP可反映心肌坏死的程度。     

冠心病病人血浆中6种神经肽水平的临床研究

目的 了解冠心病病人血浆6种神经肽(6NP),即神经肽Y(NPY)、降钙素基因相关肽(CGPR)、P物质(SP)、脑啡肽(ENK)、神经降压肽(NT)及血管活性肠肽(VIP)的含量,探讨其在冠心病发病中的临床意义。方法 选择符合WHO诊断标准的急性心肌梗死(AMI)20例,心绞痛(AP)30例,应用放射免疫法动态观察血浆6NP的含量变化,并以30例正常人作对照。结果 AMI组发病第1天6NP与对照组比较差异非常显著(P<0.01),第7、14、21天与第1天比较差异非常显著(P<0.05、P<0.01);AP组于心绞痛发作期6NP的含量与对照组比较差异非常显著(P<0.01)。经治疗2周症状缓解后复查血浆6NP含量皆有不同程度的下降和/或上升,前后比较有极显著性差异(P<0.01)。结论 血浆6NP的水平与冠心病的严重程度密切相关;6NP均参与了冠心病的病理生理过程。     

VIP对肝硬化患者门脉侧枝循环血流的作用

目的:探讨肝硬化患者血浆血管活性肠肽(VIP)对门脉侧枝循环血流的影响。方法:对37例肝硬化患者,20例健康人(HS)采用多谱勒超声测定门静脉、脾静脉及肠系膜上静脉血流参数;用放免法(RIA)测定血浆VIP含量。结果:肝硬化组血浆VIP显著高于HS组(57.34±19.62pg/ml vs 15.12±7.03 pg/ml,P<0.01);肝硬化组门静脉血流量显著低于HS组(494±286ml/min vs811±186ml/min,P<0.01);肝硬化组脾静脉与肠系膜上静脉血流量之和显著高于HS组(1257±326ml/min vs 801±197ml/min,P<0.01);肝硬化组血浆VIP与脾静脉及肠系膜上静脉血流量之和呈正相关(γ=0.87,P<0.05)。结论:血浆VIP升高可能是引起肝硬化患者内脏高动力状态的因素之一。     

急性ITP患儿外周血 CD4+ CD25+ T细胞及相关细胞因子的研究

目的检测急性特发性血小板减少性紫癜(ITP)患儿外周血CD4+CD25+调节性T细胞(TR)及相关细胞因子的变化,探讨它们在ITP发病机制中的作用。方法用流式细胞仪检测外周血TR细胞的数量,ELISA法检测血浆中相关细胞因子的含量。结果ITP患儿外周血TR细胞的百分率显著低于正常对照组[(2.83±1.05)%vs(5.07±0.59)%,P<0.05];ITP患儿血清中IL-10、TGF-β1的含量也显著低于正常对照组[IL-10:(29.48±13.69)pg/mlvs(43.10±14.95)pg/ml;TGF-β1:(170.04±91.58)pg/mlvs(254.75±130.41)pg/ml,P<0.05]。ITP患儿外周血TR细胞在CD4+细胞中所占比例与血清中IL-10、TGF-β1的含量均呈正相关(r1=0.54,r2=0.66,P<0.05)。结论急性ITP患儿外周血中TR细胞数量的减少及相关细胞因子含量的降低可能与急性ITP患儿的细胞免疫失调有关。     

Serum interferon-gamma-inducible protein 10 level was increased in myocardial infarction patients, and negatively correlated with infarct size

OBJECTIVES: We examined the serum levels of interferon-gamma-inducible protein 10 (IP-10), an inflammation-induced chemokine, in acute myocardial infarction (AMI). DESIGN AND METHODS: The subjects were 33 AMI patients, 20 stable angina pectoris patients (AP) and 20 normal subjects. In AMI patients, blood samples were collected before percutaneous coronary intervention (PCI) and on days 3, 7 and 28. RESULTS: Patients with AMI showed significantly higher serum IP-10 levels (137.5+/-79.8 pg/mL) than control subjects (91.2+/-40.1 pg/mL) and patients with AP (93.3+/-41.1 pg/mL). The serum IP-10 level before PCI was negatively correlated with infarct size, as indicated by cumulative release of creatine kinase (CK) and peak CK and its isoenzyme CK-MB. Stepwise multiple regression analysis revealed that the serum IP-10 level before PCI was an independent predictor of cumulative CK release. CONCLUSIONS: The serum IP-10 level was increased in AMI, and a higher level of serum IP-10 before PCI may be informative regarding infarct size.     

Serum level of interleukin-6 (IL-6) and N-terminal propeptide of procollagen type I (PINP) in patients with liver diseases

Introduction: The aim of this study was to evaluate the concentration of interleukin-6 and N-terminal propeptide of procollagen type I and their relationship in liver diseases of different etiologies.

Material and methods: Serum samples were obtained from 30 healthy volunteers and patients suffering from alcoholic cirrhosis (AC) – 31, non-alcoholic cirrhosis (NAC) – 28 and toxic hepatitis (HT) – 23 patients. Cirrhotic patients were classified according to Child–Pugh score. IL-6 and PINP concentrations were determined according to the electrochemiluminescence immunoassay.

Results: The mean serum IL-6 concentration was significantly higher in AC (mean?±?SD:21.52?± 15.01?pg/mL), NAC (20.07?±?32.12?pg/mL) and HT (15.14?±?17.18?pg/mL) when compared to the control group (C) (1.67?±?0.42?pg/mL) (Mann–Whitney U test: p?p?p?=?.020 and p?p?p?=?.022, respectively). IL-6 and PINP concentrations appeared to vary depending on the severity of liver damage (p?p?p?Conclusions: We conclude that serum concentrations of IL-6 and PINP change in liver diseases, and those changes reflect the severity of liver disease.     

血清Hcy和hs-CRP水平检测在AMI早期临床诊断中的临床应用

目的 探讨血清同型半胱氨酸(Hcy)、超敏C反应蛋白(hs-CRP)检测在急性心肌梗死(AMI)患者早期诊断中的临床应用价值。方法 采用散射比浊法检测hs-CRP,酶循环法检测Hcy,分别对80例AMI患者,70例心绞痛(AP)患者,50例健康对照者血清Hcy和hs-CRP检测及其分析。结果 AMI组、AP组和对照组的hs-CRP(mg/L)水平依次为8.06±1.66,4.55±0.90和2.54±0.35,疾病组与对照组比较差异均有统计学意义(F=4.156,P=0.036 9); AMI组较AP组明显增高,差异有统计学意义(P<0.05 )。AMI组、AP组和对照组的Hcy(μmol/L)分别为36.37±7.54,22.67±3.94和11.28±1.73,疾病组与对照组比较差异均有统计学意义(F=3.264,P=0.023 4),AMI组较AP组明显增高,差异有统计学意义(P<0.05 )。AMI组和AP组的hs-CRP水平与Hcy水平均呈正相关(P<0.05)。结论 AMI患者血清Hcy,hs-CRP水平明显增高,二者联合检测对AMI的发生发展有重要价值。     

氨基末端-脑钠肽前体检测对急性冠脉综合征早期诊断的意义

目的 探讨急性冠脉综合征(ACS)患者早期氨基末端-脑钠肽前体(N-terminal pro-brain natriuretic peptide,NT-proBNP)浓度的变化及其临床意义.方法 选取健康体检者15 例,稳定型心绞痛(SAP)患者15 例,ACS早期患者60 例[其中急性心肌梗死(AMI)组35例,不稳定型心绞痛(UA)组25 例].采用电化学发光免疫法(ECLIA)测定血浆NT-proBNP浓度.结果 与健康对照组NT-proBNP比较,ACS患者血浆NT-proBNP浓度明显升高(P<0.01),且AMI组NT-proBNP浓度[(1900.10±571.15)pg/mL]高于UA组[(312.78±44.47)pg/mL,P<0.01],SAP组与对照组比较差异无统计学意义.结论 血浆NT-proBNP浓度检测可为ACS早期诊断提供非常有价值的参考依据.     

非永久性房颤患者复律前后血浆脑钠肽水平的变化

目的：研究心功能正常的非永久性心房颤动患者转为窦性心律前后血浆脑钠肽（BNP）水平的变化．探讨血浆BNP水平在控制房颤发生中的作用。方法：测定74例心功能正常的非永久性房颤患者转律前后的血浆BNP变化，并与30例窦性心律患者作比较。结果：房颤患者在复律成功后，血浆BNP水平明显降低（均P〈0．01）。40例阵发性房颤患者的血浆BNP水平由复律前（69．2±17．8）pg／mL降至（27．8±15．2）pg／mL，25例持续性房颤患者的血浆BNP水平由复律前（74．6±19．5）pg／mL降至（28．9±17．3）pg／mL。结论：血浆BNP水平可预测房颤的发生和终止     

Endothelin-1 urinary excretion, but not endothelin-1 plasma concentration, is increased in renovascular hypertension.

Animal experiments have shown an increase in prepro-endothelin-1 (prepro-ET-1) mRNA expression in the clipped kidney but none in the aortic and mesenteric arteries in 2-kidney, 1-clip Goldblatt hypertensive rats. The present study was aimed at investigating whether plasma and renal endothelin-1 (ET-1) systems are differently activated in patients with renovascular hypertension (RH). The plasma concentration and urinary excretion of ET-1 were measured in 5 patients with RH (before and after successful renal angioplasty), in 7 patients with essential hypertension (EH), and in 8 normotensive control subjects. Immediately before renal angioplasty, plasma samples for ET-1 and plasma renin activity (PRA) measurements were withdrawn from the aorta and both renal veins. Unlike the PRA, the plasma ET-1 concentration did not significantly differ between the involved and the uninvolved sides. The urinary ET-1 excretion level (Fig 1) was markedly increased in patients with RH (30+/-4 ng/g urinary creatinine (UC) vs. 2.5+/-0.2 ng/g UC and 2.6+/-0.5 ng/g UC in control subjects and patients with EH, respectively; P<.001), whereas the plasma ET-1 concentration was normal (0.8+/-0.2 pg/mL vs. 0.65+/-0.3 pg/mL and 0.8+/-0.2 pg/mL in control subjects and EH, respectively, not significant). Renal angioplasty was followed in all patients by normalization of blood pressure and PRA. One week after angioplasty, urinary ET-1 decreased to one fourth of baseline (8.04+/-5.23 ng/g UC, P<.001 vs. values before angioplasty and P<.04 vs. control subjects) and normalized 1 month thereafter (3.13+/-1.62 ng/g UC, not significant vs. control subjects), whereas plasma ET-1 remained steady. The present findings clearly indicate that in patients with RH, urinary ET-1 excretion is increased, whereas plasma ET-1 concentration remains normal. Successful percutaneous transluminal renal angioplasty induced a notable reduction in ET-1 urinary excretion, whereas it did not affect ET-1 plasma concentration.     

Internal dysregulation of the renin system in patients with stable liver cirrhosis

Sodium retention in cirrhosis is associated with changes in the renin-angiotensin-aldosterone system (RAAS), the sympathetic nervous system (SNS), and the glomerular filtration rate (GFR). We hypothesized that in cirrhosis the acute reactions of RAAS and SNS to volume expansion are qualitatively intact, but occurring from elevated baseline levels. Acute cardiovascular, neurohumoral and renal responses to central blood volume changes were studied in cirrhotic patients and healthy controls. In patients, baseline plasma renin concentration (PRC) was elevated 5-fold compared to controls (p?p?p?p?p?p?p?p?相似文献   

急性心肌梗死患者血浆心肌营养素-1水平及对预后预测的价值

【目的】探讨急性心肌梗死（AMI）患者血浆心肌营养素-1（CT-1）水平的变化及其对预后预测的价值。【方法】检测86例AMI患者入院时血浆CT-1及心肌肌钙蛋白I（cTnI）的浓度,另选24名健康体检者为对照组,根据CT—l浓度将AMI患者分为CT-1〈300pg／mL组（n=52）和CT-1〉300pg／mL组（n=34）,记录患者1个月内发生的心血管事件（心血管意外死亡、心力衰竭、再发心绞痛或再发心肌梗死）,观察AMI后CT-1水平的变化、CT-1与cTnI的相关性及其对AMI患者的预后价值。【结果】AMI患者血浆CT-1浓度明显高于对照组（P〈0．01）;血浆CT-1水平与cTnI成正相关（r=0．761,P〈0．01）;CT-1〉300pg／mL组心血管事件发生率明显高于CT-1〈300pg／mL组（P〈0．01）;多变量回归分析,CT-1是预测AMI患者发生近期心血管事件的有效指标（RR：1．753,95％CI为1．112～3．438,P=0．012）。【结论】血浆CT-1水平能够反映AMI患者心肌坏死程度,也是预测AMI患者发生近期心血管事件的有效指标。     

急性脑梗死患者sFractalkine血浆浓度动态变化及其临床意义

目的：探讨血浆sFractalkine与急性期脑梗死之间的关系。方法：利用ELISA法测定40例脑梗死患者（脑梗死组）第1、3、7、14天血浆sFractalkine含量，同时测定20名健康对照者（对照组）血浆sFractalkine含量，并对血浆sFractalkine含量与脑梗死不同临床分型进行相关分析。结果：脑梗死组4个时相的血浆sFractalkine含量分别为（1191．6±747．5）、（1795．3±1204．7）、（2118．1±1180．3）和（1035．7±461．1）pg／mL，较对照组的（471．4±79．7）pg／mL明显增高（均P〈0．01），脑梗死患者第3天和第7天的sFractalkine较第1天和第14天明显增高（均P〈0．05）；重型组脑梗死患者血浆sFractalkine含量较轻、中型患者明显增高，差异有显著性（均P〈0．05）；脑梗死患者血浆sFractalkine含量与临床神经功能缺损评分呈正相关r=0．768，P=0．ooo）。结论：血浆sFractalkine含量增高与脑梗死的发生及严重程度密切相关．sFractalkine可能是脑梗死患者病情变化的一种炎性标志物