血浆D-二聚体与急性冠脉综合征的相关性

目的探讨急性冠脉综合征(ACS)患者血浆D-二聚体水平与其临床相关性。方法前瞻性研究2013年9月至2014年9月就诊于吉林大学第一医院心血管疾病诊治中心患者196例,其中ACS组133例,对照组63例,ACS组又分为不稳定型心绞痛组(UAP)41例、急性心肌梗死组(AMI)92例。各组均记录入院时血浆D-二聚体、肌酸激酶同工酶(CK-MB)、肌钙蛋白I水平,其中AMI组还分别记录心肌梗死溶栓治疗(TIMI)心肌灌注分级(TMP)、血栓积分(TS)及住院期间主要心脏不良事件(MACE)发生情况,分析血浆D-二聚体与ACS相关性研究。结果与对照组比较,AMI组患者血浆D-二聚体、CK-MB与肌钙蛋白I水平均升高(P<0.05);与对照组比较,UAP组CK-MB与肌钙蛋白I水平升高,但差异不具有统计学意义(P>0.05),而血浆D-二聚体水平升高,差异具有统计学意义(P<0.05);AMI组中TMP 0~1级患者血浆D-二聚体水平明显高于TMP 2~3级(P<0.05),TS≥2分患者血浆D-二聚体水平明显高于TS<2分者(P<0.05),出现MACE患者血浆D-二聚体水平明显高于未发生者(P<0.05)。结论血浆D-二聚体可作为诊断早期ACS的参考指标;AMI患者血浆D-二聚体水平的升高高度提示血运重建后心肌组织灌注不佳及冠脉血管血栓高负荷,MACE发生可能性越大。     

冠心病患者血清载脂蛋白水平和血浆D-二聚体水平变化及其相关性研究

目的观察冠心病患者血清载脂蛋白水平和血浆D-二聚体水平变化,分析其相关性。方法选取2013年6月—2015年10月在宜昌市中心人民医院住院治疗的冠心病患者90例作为病例组,根据冠心病类型分为稳定型心绞痛(SAP)组25例、不稳定型心绞痛(UAP)组15例、陈旧性心肌梗死(OMI)组20例、急性心肌梗死(AMI)组30例。另选取同时期在本院体检的健康成年人30例作为对照组。比较5组受试者血清载脂蛋白水平和血浆D-二聚体水平。结果 SAP组、UAP组、AMI组患者血清载脂蛋白a水平低于对照组,UAP组、AMI组患者血清载脂蛋白a水平低于SAP组,OMI组患者血清载脂蛋白a水平高于SAP组、UAP组,AMI组患者血清载脂蛋白a水平低于OMI组,差异有统计学意义(P0.05);SAP组、UAP组、OMI组、AMI组患者血清载脂蛋白b水平高于对照组,UAP组、AMI组患者血清载脂蛋白b水平高于SAP组,AMI组患者血清载脂蛋白b水平高于OMI组,差异有统计学意义(P0.05);SAP组、UAP组、OMI组、AMI组患者血浆D-二聚体水平高于对照组,UAP组、AMI组患者血浆D-二聚体水平高于SAP组,OMI组患者血浆D-二聚体水平高于UAP组,AMI组患者血浆D-二聚体水平高于OMI组,差异有统计学意义(P0.05)。Pearson相关分析结果显示,血清载脂蛋白a水平与血浆D-二聚体水平呈负相关(P0.05),血清载脂蛋白b水平与血浆D-二聚体水平呈正相关(P0.05)。结论冠心病患者血清载脂蛋白a水平较低,血清载脂蛋白b水平和血浆D-二聚体水平较高,尤以AMI和UAP患者明显,血清载脂蛋白水平变化与血浆D-二聚体水平变化相关。     

血浆D-二聚体水平与急性心肌梗死及冠状动脉病变程度的相关性

目的：探讨急性心肌梗死以及冠状动脉病变程度与血浆D-二聚体的相关性。方法：收集 2015年8月至2017年4月入住安徽医科大学第一附属医院心内科且资料完整的急性心肌梗死组(AMI组)患者110例,同期入住并行冠脉造影检查阴性的非急性心肌梗死组(非AMI组)患者100例,观察两组间D-二聚体差别,同时根据造影结果,计算 AMI组冠脉病变支数以及Gensini评分,观察其与D-二聚体的相关性。结果：①AMI组D-二聚体水平0.77±0.34(mg/L)明显高于非AMI组0.30±0.14(mg/L),差异有统计学意义(P<0.05);②冠脉三支病变组D-二聚体水平0.97±0.37(mg/L)高于单支0.52±0.25(mg/L)以及双支病变组0.75±0.20(mg/L),差异有统计学意义(P<0.05),冠脉双支病变组D-二聚体水平高于单支病变组,差异有统计学意义(P<0.05);③AMI组D-二聚体水平与Gensini评分呈正相关(r=0.516,P<0.05)。结论：血浆D-二聚体水平在AMI患者中要高于非AMI患者,同时D-二聚体水平可反映冠脉病变程度。     

ST段抬高型心肌梗死患者D-二聚体水平与全球急性冠状动脉事件注册评分的关系

目的:探讨ST段抬高型心肌梗死(STEMI)患者血浆D-二聚体(DD)水平与全球急性冠状动脉事件注册(GRACE)评分的关系。方法:选择STEMI患者81例,入院后立即测定血浆D-二聚体水平(采血时间距发病2~72 h),计算GRACE评分并进行危险分层,分析STEMI患者血浆D-二聚体水平与GRACE评分及危险分层的关系。结果:根据GRACE评分将STEMI患者作危险分层,高危组D-二聚体水平的平方根明显高于中危组及低危组(均P0.01),中危组与低危组间差异无统计学意义(P0.05)。将患者按D-二聚体水平的高低分为高DD组和低DD组,高DD组患者GRACE评分明显高于低DD组(P0.01)。STEMI患者D-二聚体水平的平方根与GRACE评分呈正相关(r=0.457,P0.01)。结论:STEMI患者血浆D-二聚体水平与GRACE评分正相关。D-二聚体检测对于STEMI患者的危险分层具有参考意义。     

非ST段抬高急性冠状动脉综合征患者血浆D-二聚体与GRACE评分的相关研究

目的:探讨非ST段抬高急性冠状动脉综合征(NSTE-ACS)患者血浆D-二聚体水平与全球急性冠状动脉事件注册(GRACE)评分的关系。方法:入选151例在我院住院的NSTE-ACS患者,其中不稳定性心绞痛(UA)40例,非ST段抬高心肌梗死(NSTEMI)111例。入院后测定血浆D-二聚体浓度,计算GRACE评分并进行危险分层,分析NSTE-ACS患者血浆D-二聚体水平与GRACE评分及危险分层的关系。结果:NSTEMI组D-二聚体含量的平方根及GRACE评分均高于UA组(P0.05和P0.01)。将所有NSTE-ACS患者作GRACE危险分层,高危组D-二聚体含量的平方根明显高于中危组及低危组(均P0.01),中危组与低危组D-二聚体含量的平方根差异无统计学意义(P0.05)。将所有NSTE-ACS患者按D-二聚体含量1.0μg/ml和≥1.0μg/ml分为低D-二聚体组和高D-二聚体组,高D-二聚体组GRACE评分明显高于低D-二聚体组(P0.01)。NSTE-ACS患者D-二聚体的平方根与GRACE评分呈正相关(r=0.335,P0.01)。结论:NSTE-ACS患者血浆D-二聚体水平与GRACE评分具有良好的相关性。D-二聚体水平对于NSTE-ACS患者的早期危险分层具有一定的价值。     

老年急性ST段抬高型心肌梗死病人血浆D-二聚体水平与冠状动脉高血栓负荷的关系

目的:探究血浆D-二聚体水平与老年急性ST段抬高型心肌梗死病人冠状动脉高血栓负荷的关系。方法:选取2020年2月—2021年2月我院收治的137例老年急性ST段抬高型心肌梗死病人作为研究对象,根据病人冠状动脉血栓负荷情况将病人分为低血栓负荷组(85例)和高血栓负荷组(52例)。比较两组病人的临床资料,采用多因素Logistic回归分析影响冠状动脉高血栓负荷的因素;采用Pearson检验分析高血栓负荷病人血浆D-二聚体水平与其他影响因素间的相关性;采用受试者工作特征曲线(ROC)评价各影响因素对病人冠状动脉高血栓负荷的预测价值;采用Kaplan-Meier法绘制生存曲线,比较不同D-二聚体水平病人的生存情况。结果:高血栓负荷组血红蛋白水平低于低血栓负荷组,红细胞分布宽度(RDW)、肌酐(Cr)、心肌肌钙蛋白I(cTnI)、C反应蛋白(CRP)、脂蛋白相关磷脂酶A2(Lp-PLA2)、D-二聚体水平高于低血栓负荷组(P<0.05);多因素分析结果显示,RDW增加及cTnI、CRP、Lp-PLA2、D-二聚体水平升高是病人冠状动脉高血栓负荷的独立危险因素(P<0.05);高血栓负...     

急性心肌梗死患者血浆N-末端脑钠钛前体、D-二聚体水平与GRACE危险评分的关系尹燕平 苗立夫(清华大学第一附属医院心脏中心 北京 100016)

目的：探讨急性心肌梗死(AMI)患者,血浆N-末端脑钠钛前体(NT-proBNP)、D-二聚体水平与GRACE危险评分的关系。方法：收集2011年1月至12月,在我院心脏中心住院的AMI患者132例,入院后即刻测定血浆NT-proBNP、D-二聚体浓度,计算GRACE危险评分。同时收集120例冠脉造影结果呈阴性的对照者血浆NT-proBNP、D-二聚体指标,与AMI组进行比较。以GRACE危险评分差异分为低危(<109分)、中危(109～140分)、高危(>140分)3组,分析不同组别间血浆NT-proBNP、D-二聚体水平的变化。分析NT-proBNP、D-二聚体水平与GRACE危险评分的相关性。结果：AMI组患者的血浆NT-proBNP、D-二聚体水平[(3190.72±6834.36)ng/l、(0.31±0.28) mg/l]均高于对照组[(104.99±64.76)ng/l、(0.12±0.06) mg/l],差异均有统计学意义(P<0.05)。低危、中危、高危3组[NT-proBNP水平分别为(251.78±314.36)ng/l、(2132.72±5444.9)ng/l、(5870.53±8847.22) ng/l,D-聚体水平分别为(0.12±0.08)mg/l、(0.29±0.29)mg/l、(0.40±0.31)mg/l]之间NT-proBNP、D-二聚体水平比较,差异均有统计学意义(P<0.05)。NT-proBNP、D-二聚体水平随GRACE危险评分升高而升高,呈正相关(相关系数分别为r=0.571,r=0.446,P<0.05)。 结论：血浆NT-proBNP、D-二聚体水平可帮助判断AMI的危险程度。     

低年龄段急性心肌梗死与血同型半胱氨酸、D-二聚体的关系探讨

目的探讨血同型半胱氨酸(Hcy)、D-二聚体与低年龄段急性心肌梗死(AMI)发生的相关性。方法选取2016年10月—2017年7月在北京地坛医院心内科住院的AMI病人90例作为观察组,同时收集同期非AMI病人90例作为对照组。收集两组基线资料及实验室检查结果,通过单因素及多因素分析,研究相关指标与低年龄段急性心肌梗死的关系,并评估其诊断价值。结果单因素分析结果显示,两组纤维蛋白原(Fib)、脂蛋白a(LPa)、血尿酸(UA)分布比较差异均无统计学意义(P0.05),Hcy、D-二聚体、血钙水平分布比较差异均有统计学意义(P0.05);多因素分析的结果显示,血钙2.27 mmol/L、Hcy10.73μmol/L是低年龄段心肌梗死的独立危险因素,但Hcy10.73μmol/L的诊断价值较低。结论血浆Hcy、D-二聚体是低年龄段急性心肌梗死的危险因素,检测Hcy、D-二聚体水平或可成为评估和预测低年龄段急性心肌梗死的重要指标。     

急性心肌梗塞溶栓治疗期间血浆D-二聚体的动态变化及其临床意义

目的 :探讨血浆 D-二聚体对评价溶栓治疗急性心肌梗塞 (AMI)的价值及意义。　　方法 :2 9例 AMI患者分为溶栓组 (n=2 1) ,未溶栓组 (n=8) ;溶栓组根据溶栓治疗后冠状动脉 (冠脉 )是否开通又分为溶栓再通组 (n=12 ) ,溶栓未通组 (n=9) ;采用酶联免疫吸附试验 (EL ISA)法检测血浆 D-二聚体的水平 ,并与正常对照组 (n=2 0 )进行比较。　　结果 :AMI未溶栓组血浆 D-二聚体较正常对照组显著升高 (P<0 .0 5 ) ;溶栓组血浆 D-二聚体较未溶栓组显著升高(P<0 .0 5 ) ,溶栓后血浆 D-二聚体较溶栓前显著升高 (P<0 .0 1) ,于溶栓后 6小时达高峰 ;溶栓再通组血浆 D-二聚体较溶栓未通组显著升高 ,溶栓前及溶栓后 6小时两组比较有极显著统计学意义 (P<0 .0 1)。　　结论 :AMI早期已有纤溶系统亢进 ,应用溶栓药后进一步激活纤溶系统而发挥作用 ,且以溶栓再通组更显著。     

老年肺炎患者血清C-反应蛋白、D-二聚体、乳酸的水平变化及意义

目的探讨老年肺炎患者血清C-反应蛋白(CRP)、D-二聚体、乳酸(LA)水平及其临床意义。方法选择老年肺炎患者90例作为肺炎组,同期体检的健康者90例作为对照组。90例肺炎患者根据是否死亡,分为死亡组和存活组。测定肺炎组和对照组患者的血清、D-二聚体、LA水平,计算肺炎患者血清乳酸清除率,根据血清乳酸清除率将肺炎患者分为高乳酸清除率组和低乳酸清除率组,比较肺炎组和对照组患者血清C-反应蛋白、D-二聚体和LA水平,存活组和死亡组血清CRP、D-二聚体和LA水平,存活组和死亡组乳酸清除率,高乳酸清除率组和低乳酸清除率组患者死亡率。结果老年肺炎组患者血清C-反应蛋白、D-二聚体和乳酸水平均明显高于对照组患者(P0.05);老年肺炎死亡组患者血清CRP、D-二聚体和LA水平均明显高于存活组患者(P0.05);老年肺炎死亡组患者血清乳酸清除率明显低于存活组患者(P0.05);老年肺炎高乳酸清除率组患者的死亡率明显低于低乳酸清除率组患者(P0.05)。结论老年肺炎患者的血清CRP、D-二聚体和LA水平升高,老年肺炎死亡患者的CRP、D-二聚体和LA水平高,低乳酸清除率患者的死亡率比较高。     

Serum C-reactive protein elevation in left ventricular remodeling after acute myocardial infarction--role of neurohormones and cytokines

BACKGROUND: We previously reported that increased peak serum C-reactive protein (CRP) level after acute myocardial infarction (AMI) was a major predictor of cardiac rupture and long-term outcome. The aim of this study was to clarify the role of serum CRP elevation as a possible marker of left ventricular (LV) remodeling after AMI. METHODS: We prospectively studied 31 patients who underwent primary angioplasty for a first anterior Q-wave AMI. Peak serum CRP level was determined by serial measurements after admission. LV volume and the plasma levels of various neurohormones and cytokines were measured on admission, and 2 weeks and 6 months after AMI. RESULTS: Patients with higher peak CRP levels (above the median) had a greater increase in LV end-diastolic volume during 2 weeks after AMI (+21+/-14 vs. +5+/-6 ml/m(2), P=0.001) and a lower ejection fraction (45+/-11 vs. 53+/-7%, P=0.02) than those with lower CRP levels, associated with a higher incidence of pump failure, atrial fibrillation, and LV aneurysm. Plasma levels of norepinephrine, brain natriuretic peptide, and interleukin-6 2 weeks after AMI were higher in the high CRP group than in the low CRP group. CONCLUSIONS: Increased peak serum CRP level was associated with a greater increase in LV volume after anterior AMI. Plasma norepinephrine and interleukin-6 levels were increased in patients with higher CRP levels, suggesting a possible role of sympathetic activation and enhanced immune response in the development of LV remodeling after AMI.     

血清C-反应蛋白对不稳定型心绞痛患者预后的预测价值

目的　探讨不稳定型心绞痛(UAP)患者血清C -反应蛋白(CRP)水平与心血管事件发生的关系。方法　将UAP患者按入院2 4小时内血清CRP水平分为两组:低CRP组(CRP <3 .5mg·L-1) 4 6例,高CRP组(CRP≥3. 5mg·L-1) 5 8例。两组患者入院后均予常规内科治疗,比较2周内及随访6个月时两组发生心血管事件的情况。结果　(1)低CRP组2周内发生心绞痛总数次15 8例次,平均3 .4 3次/人,与高CRP组总2 86例次,平均4 .93次/人比较有显著性差异(P <0 . 0 5 ) ;随访6个月时,低CRP组共发生心绞痛2 0 1例次,平均4 .37次/人,与高CRP组总76 3例次,平均13. 1次/人比较有显著性差异(P <0 . 0 1) ;(2 )低CRP组2周内及随访6个月时发生急性心肌梗死(AMI)例数(% )分别为6例(13 .0 % )及2例(4 .4 % )与高CRP组18例(31 .0 % )及13例(2 2. 4 % )比较有显著性差异(P <0 . 0 5 ) ;(3)低CRP组随访6个月时发生猝死1例(2 . 2 % )与高CRP组5例(8. 6 % )比较无显著性差异(P >0 . 0 5 )。结论　血清CRP水平对UAP患者近远期心血管事件的发生有很高的预测价值。     

Early use of beta-blockers is associated with attenuation of serum C-reactive protein elevation and favorable short-term prognosis after acute myocardial infarction

BACKGROUND: We have reported that a marked elevation in serum C-reactive protein (CRP) level is a predictor for infarct expansion and cardiac rupture after AMI. Although beta-blockers prevent cardiac rupture after AMI, their effect on serum CRP elevation has not been determined. METHODS: We studied a total of 154 patients with first Q-wave AMI. Patients complicated by pump failure were excluded from this study. Eighty-two patients received beta-blocker treatment within 24 h of the onset of AMI, while 72 patients received no beta-blocker treatment. Peak serum creatine kinase (CK) and CRP levels were determined by serial measurements. RESULTS: There was no difference between the groups according to age, sex, coronary risk factors, pre-infarction angina, infarct site, prior use of cardiovascular drugs, use of revascularization therapy, and prevalence of multivessel disease. Beta-blocker treatment was associated with a lower peak CRP level (6.9 +/- 6.1 vs.10.8 +/- 9.3 mg/dl, p = 0.002), a shorter duration from the onset to the peak CRP level (2 +/- 1 vs. 3 +/- 2 days, p < 0.0001), a lower incidence of cardiac rupture (p = 0.03) and lower in-hospital cardiac mortality (p = 0.02), despite similar peak CK levels. CONCLUSION: The early use of beta-blockers is associated with decreased serum CRP level and a favorable clinical outcome after first Q-wave AMI, suggesting some beneficial effects of beta-blockers on infarct healing after AMI.     

Levels and values of serum high-sensitivity C-reactive protein within 6 hours after the onset of acute myocardial infarction

BACKGROUND: C-reactive protein (CRP), which has been suggested to directly enhance inflammation in plaques, is rapidly synthesized and secreted in the liver 6 h after an acute inflammatory stimulus. Therefore, serum levels of CRP within 6 h after the onset of acute myocardial infarction (AMI) merely reflect a chronic and persistent inflammatory process and are not due to acute myocardial damage. We hypothesized that the serum CRP level, which would abnormally elevate thereafter, is followed by a plaque rupture in the clinical setting of AMI. METHODS AND RESULTS: CRP was prospectively measured by high-sensitivity CRP assay (hs-CRP) in 157 consecutive patients (106 patients within 6 h, and 51 patients >/= 6 h but < 12 h after the onset of AMI) with ST-segment elevation AMI undergoing primary percutaneous coronary intervention (PCI). Serum levels of hs-CRP were also measured in 30 patients with stable angina undergoing elective PCI and in 30 healthy control subjects. The serum level of hs-CRP was significantly higher in patients with an onset of AMI < 6 h than in patients with angina pectoris (2.7 +/- 2.3 mg/L vs 1.4 +/- 0.7 mg/L, p < 0.0001 [mean +/- SD]) and in healthy subjects (2.7 +/- 2.3 mg/L vs 1.0 +/- 0.6 mg/L, p < 0.0001). There were no significant differences in serum levels of hs-CRP in patients with an onset of AMI 3 h but < 6 h (2.7 +/- 2.5 mg/L vs 2.7 +/- 2.2 mg/L, p = 0.87). However, the serum level of hs-CRP was significantly higher in patients with an onset >/= 6 h than in patients with an onset < 6 h (14.1 +/- 16.5 mg/L vs 2.7 +/- 2.3 mg/L, p < 0.0001). CONCLUSIONS: Serum levels of hs-CRP were significantly higher in patients with an onset of AMI < 6 h than in healthy subjects and in patients with angina pectoris undergoing PCI. The inflammatory process has been proved as one of the mechanisms causing plaque rupture. Elevated serum hs-CRP levels in patients with AMI < 6 h may portend vulnerable plaque rupture.     

Cardiac free wall rupture in acute myocardial infarction: ameliorative effect of coronary reperfusion.

To investigate the pathophysiology of cardiac free wall rupture (cardiac rupture) following acute myocardial infarction (AMI), and to clarify whether reperfusion therapy prevents cardiac rupture, 1,329 cases of AMI (conventional therapy group: 807 cases and reperfusion therapy group: 533 cases) were studied retrospectively. The overall incidence of cardiac rupture was 2.3% (2.7% in the conventional therapy group vs. 1.7% in the reperfusion therapy group). Patients with cardiac rupture were divided into two subgroups according to the time interval from the onset of AMI to cardiac rupture (early rupture less than or equal to 72 h and late rupture greater than or equal to 4 days). The indices of initial evolution of AMI was a significant risk of early cardiac rupture. The reperfusion therapy group showed significantly lower incidence of late rupture (0.4 vs. 1.5% in conventional therapy group; p less than 0.05). The incidence of cardiac rupture in the unsuccessful reperfusion therapy group was higher than that of the successful group (5.9% of 118 cases vs. 0.5% of 404 cases; p less than 0.05). It is concluded that the etiology of cardiac rupture following AMI cannot be explained by any single factor. Early rupture depends on the initial evolution of AMI, and early reperfusion and collateral flow prevent the late onset cardiac rupture.     

白细胞介素-6及C-反应蛋白与急性心肌梗死后心室重构的相关性研究

目的:评价血清白细胞介素6(IL6)和C反应蛋白(CRP)对心肌梗死后心室重构的预测价值。方法:测定64例首次急性心肌梗死患者发病72小时的IL6和CRP及第14天的超声心动图,根据IL6浓度将患者分成高IL6组和低IL6组,比较两组间心室重构各指标。结果:高IL6组CRP浓度、左心室舒张末容积(LVEDV)、左心室收缩末容积(LVESV)、左心室重构(LVRM)总的发生率明显升高,左心室射血分数(LVEF)降低,与低IL6组比较均有统计学差异(P<0.05)。两组室壁瘤发生率无统计学差异(P>0.05)。血清IL6与血清CRP、左心室舒张末容积、左心室收缩末容积、室壁瘤、心室重构均呈显著正相关,与左心室射血分数呈显著负相关。血清CRP与左心室收缩末容积、室壁瘤、心室重构呈显著正相关,与左心室射血分数呈显著负相关,但是与左心室舒张末容积无显著相关性。CRP进入Logistic回归方程。结论:心肌梗死后72小时高水平IL6和CRP与心肌梗死后心室重构呈正相关,血清高CRP浓度是预测心肌梗死急性期发生心室重构的独立预测因素。     

急性心肌梗死患者血清新蝶呤的变化及其预后判断价值

目的:探讨心肌梗死急性期血清新蝶呤(Neopterin,Npt)的变化及其预后判断价值。方法:以86例急性心肌梗死(AMI)患者为对象,与88例不稳定型心绞痛(UAP)、62例稳定型心绞痛(SAP)及35例健康者行对照观察。检测两组血Npt水平(AMI、UAP患者测定入院时、3d后和出院前3个时点,SAP与健康者为单次检测),记录AMI组住院及随访期间(11～13个月,平均11.2个月)心脏性死亡、再发性梗死、心绞痛等事件发生情况。结果:AMI组Npt阳性率及平均水平明显高于UAP、SAP及健康者(均P<0.01)。AMI患者入院时及3d后血Npt相似,均明显高于出院前(P<0.01)。血Npt阳性者,住院及随访期间心脏事件发生率显著高于Npt阴性者(P<0.05)。但有与无事件发生者,入院时、3d后、出院前3个时点血Npt水平比较,仅出院前差异有统计学意义(P<0.01)。经校正其他因素后,3个时点血Npt对AMI患者事件发生的相对危险度(95%可信区间)分别为4.7(0.6～36.3,P>0.05)、4.2(0.8～5.1,P>0.05)、7.2(1.8～29.6,P<0.01)。结论:AMI急性期血Npt明显升高,病情稳定后逐渐下降,此时的水平反映了不稳定斑块的炎症活动状况,是AMI患者预后的独立预测因子。     

Increased pericardial fluid level of matrix metalloproteinase-9 activity in patients with acute myocardial infarction: possible role in the development of cardiac rupture.

BACKGROUND: In an animal model of acute myocardial infarction (AMI), deletion of matrix metalloproteinase (MMP)-9 results in suppression of the development of cardiac rupture. The present study sought to clarify how myocardial MMP-9 activity is related to the pathophysiologies of AMI and cardiac rupture in humans. METHODS AND RESULTS: Levels of interleukin-8 (IL-8), polymorphonuclear leukocyte (PMN) elastase, monocyte chemotactic protein-1 (MCP-1) and MMP activity were measured in the pericardial fluid obtained from 28 patients with angina pectoris (AP group) and 16 patients with AMI (AMI group) undergoing cardiac surgery. In the AMI group, 5 were complicated with ventricular septal perforation (VSP) and the remaining 11 were not (non-VSP). Levels of IL-8, PMN elastase, MMP-2 and MMP-9 activity were all higher in the AMI group than in the AP group. In the AMI group, all levels other than MMP-2 activity were further elevated in cases with VSP compared with those in the non-VSP group. There was no significant difference in MCP-1 among the groups CONCLUSIONS: Markers of neutrophil activation in the infarcted cardiac tissue seem to be elevated in AMI. Highly elevated levels of MMP-9 activity, which may be derived from neutrophils, and PMN elastase may be related to the pathophysiology of VSP or cardiac rupture in AMI.     

C反应蛋白水平与急性心肌梗死溶栓患者预后的临床研究

目的　观察血清C反应蛋白 (CRP)水平变化与急性心肌梗死 (AMI)溶栓治疗后再通以及 4周内患者预后的相互关系。方法　根据溶栓后血管再通情况 ,将 43例患者分为血管再通组 (32例 )和血管未通组 (11例 ) ,将溶栓后 1周内不同时间血清CRP水平变化与梗死血管再通关系、梗死后 4周内心脏事件发生率即梗死后心绞痛、再梗死、严重心律失常的发生率以及心功能状态进行对比分析。结果　 (1)血清CRP水平升高后持续下降者显示较持续升高者梗死血管再通率所占比例明显升高 ,分别为 71.9%和 3.1%(P <0 .0 1) ;(2 )前者 4周内梗死后心脏事件发生率较后者明显减少 ,其中梗死后心绞痛发生率分别为 8.3%和 6 2 .5 %(P <0 .0 1)。结论　AMI溶栓后血清CRP水平的变化在预测溶栓后再通和患者预后中具有一定的临床价值。     

蛋白芯片法联检急性冠状动脉综合征患者血中细胞因子的意义

目的 探讨急性冠状动脉综合征(ACS)患者血中炎性细胞因子、炎性细胞相关因子及心肌损伤因子浓度的变化及临床意义.方法 运用蛋白芯片技术同步联检经冠状动脉造影及临床表现证实为ACS患者104例及对照者50例血清或血浆中10种细胞因子水平;同时对不稳定性心绞痛(UA)患者按Braunwald分级进行分析.结果 急性心肌梗死(AMI)组和UA组血清中C反应蛋白(CRP)、白介素(IL)-6、可溶性CD40L(sCD40L)、基质金属蛋白酶(MMP)-9、心脏型脂肪酸结合蛋白(H-FABP)、肌钙蛋白Ⅰ(cTnⅠ)及血浆中的IL-8、内皮素(ET)-1、可溶性血管细胞黏附分子(sVCAM)-1、氨基酸N末端脑钠肽原(NT-proBNP)浓度高于对照组,差异有统计学意义(P＜0.01);AMI组cTnⅠ[(11.08±10.49) μg/L]和H-FABP[(19.80±4.60)μg/L]浓度高于UA组[cTnⅠ:(0.69±0.18)μg/L,H-FABP:(4.12±2.45)μg/L,P＜0.01],而CRP、IL-6、MMP-9、sCD40L及ET-1浓度,两组比较差异无统计学意义;UA组MMP-9、sCD40L及H-FABP的浓度与Braunwald分级存在显著正相关(分别r=0.653,r=0.745,r=0.933,均P＜0.01).随着心绞痛严重程度的增加,MMP-9、sCD40L及H-FABP水平明显升高,心绞痛Ⅰ级＜心绞痛Ⅱ级＜心绞痛Ⅲ级(P＜0.01).结论 ACS患者血中存在多种细胞因子浓度异常,其中MMP-9、sCD40L、H-FASP的浓度与UA患者心绞痛严重程度存在良好的相关性.提示上述细胞因子参与和促使了ACS的发生、发展,为ACS的危险分层、预后判断提供了可能的分子标志物依据.