scholarly journals Circulating endothelial microparticles and miR-92a in acute myocardial infarction

2017 ◽  
Vol 37 (2) ◽  
Author(s):  
Yuchen Zhang ◽  
Junjun Cheng ◽  
Fang Chen ◽  
Changyan Wu ◽  
Junmeng Zhang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Endothelial Dysfunction ◽  
Operating Characteristic ◽  
Troponin I ◽  
Diagnostic Value ◽  
Diagnostic Parameter ◽  
Reverse Transcription Quantitative Pcr ◽  
Artery Disease ◽  
Stable Cad

Microparticles (MPs) and miRNAs have been shown to play important roles in coronary artery disease (CAD) by monitoring endothelial dysfunction. The present study aims to investigate the diagnostic value of endothelial MPs (EMPs) and miRNAs (miR-92a or miR-23a) as biomarkers in distinguishing patients with acute myocardial infarction (AMI) from those with CAD. Plasma samples from 37 patients with AMI, 42 patients with stable CAD (SCAD), and 35 healthy adults were collected for investigation in the present study. The numbers of CD31+/CD42b− MPs, CD31+/CD42b+ MPs, and CD31−/CD42b− MPs were measured by flow cytometry and the levels of miR-92a and miR-23a were analyzed using reverse transcription-quantitative PCR. Moreover, cardiac troponin I (cTnI) expression was detected by ELISA to serve as a routine diagnostic parameter. The number of CD31+/CD42b− was higher in AMI group than those in SCAD and healthy groups. Besides, the expression of miR-92a was higher in AMI group compared with two other groups. Furthermore, evidence showed that there was a positive correlation between the levels of CD31+/CD42b− MPs and miR-92a. Finally, the receiver operating characteristic (ROC) curve revealed that the area value under the curve of CD31+/CD42b− MPs, miR-92a and cTnI was 0.893, 0.888, and 0.912 respectively. CD31+/CD42b− MPs and miR-92a might have great potential to provide diagnostic value for AMI and could probably regulate the endothelial dysfunction in AMI patients.

scholarly journals Plasma EMMPRIN levels in acute myocardial infarction and stable coronary artery disease

2016 ◽  
Vol 39 (3) ◽  
pp. 79 ◽  
Author(s):  
Mehmet N Akkus ◽  
Adil Ormam ◽  
Sabri Seyis ◽  
Çagdas Baran ◽  
Aysegül Görür ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Acute Myocardial Infarction ◽  
Coronary Artery ◽  
Plasma Levels ◽  
Stable Coronary Artery Disease ◽  
Healthy Controls ◽  
St Elevation ◽  
Artery Disease ◽  
Stable Cad

Purpose: The purpose of this study was to determine whether the plasma levels of soluble extracellular matrix metalloproteinase inducer (EMMPRIN) differed among the patients with ST-elevation myocardial infarction (STEMI), non-STEMI (NSTEMI) and stable coronary artery disease (CAD) and the healthy controls, and to identify the factors associated with the differences in plasma levels of this this protein among patients in these groups. Methods: Plasma EMMPRIN levels were compared among four age- and sex-matched groups of patients with STEMI, NSTEMI and stable CAD and healthy controls (n=44 per group), then logistic regression and correlation analyses were conducted for the whole acute myocardial infarction (AMI) patients group. Results: EMMPRIN levels were significantly higher in the STEMI (39.4±9.2ng/mL) and NSTEMI (37.1±10.5ng/mL) groups than in either the stable CAD (27.5±4.7ng/mL) or control (24.5±5.8ng/mL) groups (p

scholarly journals Plasma miR-22-5p, miR-132-5p, and miR-150-3p Are Associated with Acute Myocardial Infarction

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Huixian Li ◽  
Pengxiang Zhang ◽  
Fangjiang Li ◽  
Guili Yuan ◽  
Xiaoyuan Wang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Plasma Levels ◽  
Troponin I ◽  
Early Stage ◽  
Diagnostic Value ◽  
Diagnostic Efficacy ◽  
Diagnostic Biomarkers ◽  
Circulating Micrornas ◽  
Novel Biomarkers

Circulating microRNAs (miRNAs) are potential biomarkers for cardiovascular diseases. Our study aimed to determine whether miR-22-5p, miR-132-5p, and miR-150-3p represent novel biomarkers for acute myocardial infarction (AMI). Plasma samples were isolated from 35 AMI patients and 55 matched controls. Total RNA was extracted, and quantitative real-time PCR and ELISA were performed to investigate the expressions of miRNAs and cardiac troponin I (cTnI), respectively. We found that plasma levels of miR-22-5p and miR-150-3p were significantly higher during the early stage of AMI and their expression levels peaked earlier than cTnI. Conversely, circulating miR-132-5p was sustained at a low level during the early phase of AMI. All three circulating miRNAs were correlated with plasma cTnI levels. A receiver operating characteristic (ROC) analysis suggested that each single miRNA had considerable diagnostic efficacy for AMI. Moreover, combining the three miRNAs improved their diagnostic efficacy. Furthermore, neither heparin nor medications for coronary heart disease (CHD) affected plasma levels of miR-22-5p and miR-132-5p, but circulating miR-150-3p was downregulated by medications for CHD. We concluded that plasma miR-22-5p, miR-132-5p, and miR-150-3p may serve as candidate diagnostic biomarkers for early diagnosis of AMI. Moreover, a panel consisting of these three miRNAs may achieve a higher diagnostic value.

scholarly journals Complement Activation in Association with Markers of Neutrophil Extracellular Traps and Acute Myocardial Infarction in Stable Coronary Artery Disease

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Karsten E. Kluge ◽  
Miriam S. Langseth ◽  
Trine B. Opstad ◽  
Alf Å. Pettersen ◽  
Harald Arnesen ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Coronary Artery Disease ◽  
Acute Myocardial Infarction ◽  
Coronary Artery ◽  
Clinical Outcome ◽  
Complement Activation ◽  
Neutrophil Extracellular Traps ◽  
Extracellular Traps ◽  
Artery Disease ◽  
Stable Cad

Complement activation and neutrophil extracellular traps (NETs) have both been suggested to drive atherosclerotic plaque progression. Although experimental studies suggest interplay between these two innate immunity components, the relevance in patients with coronary artery disease (CAD) is unclear. The aim of this study was to assess associations between complement activation and NETs in patients with stable CAD and examine the role of complement activation on clinical outcome. Blood samples from a cohort of patients with angiographically verified stable CAD (n=1001) were analyzed by ELISA for the terminal complement complex (TCC) and by relative quantification for gene expression of the C5a receptor 1 (C5aR1) as markers of complement activation. As markers of NETs, dsDNA was analyzed by fluorescent nucleic acid stain and myeloperoxidase-DNA (MPO-DNA) by ELISA. Clinical outcome was defined as unstable angina, nonhemorrhagic stroke, acute myocardial infarction (MI), or death (n=106, whereof 36 MI). Levels of TCC and C5aR1 were not significantly correlated to dsDNA (TCC: r=−0.045, p=0.153; C5aR1: r=−0.060, p=0.434) or MPO-DNA (TCC: r=0.026, p=0.414; C5aR1: r=0.123, p=0.107). When dividing TCC and C5aR1 levels into quartiles (Q), levels of MPO-DNA differed significantly across quartiles (TCC: p=0.008, C5aR1: 0.049), while dsDNA did not (TCC: p=0.181, C5aR1: p=0.771). Patients with TCC levels in Q4 had significantly higher levels of MPO-DNA than Q1-3 (p=0.019), and C5aR1 levels in Q3-4 had significantly higher levels of MPO-DNA than Q1-2 (p=0.046). TCC levels did not differ between patients experiencing a clinical endpoint or not, but high levels were associated with increased risk of acute MI (OR. 1.97, 95% CI: 0.99-3.90, p=0.053) during two-year follow up, also when adjusted for relevant covariates. In conclusion, TCC and C5aR1 were moderately associated with the NET marker MPO-DNA, and TCC levels were related to the risk of future MI in this cohort of patients with stable CAD.

The Diagnostic Value of Troponin T and Myoglobin Levels in Acute Myocardial Infarction: A Study in Turkish Patients

2003 ◽  
Vol 31 (2) ◽  
pp. 76-83
Author(s):  
S Vatansever ◽  
V Akkaya ◽  
O Erk ◽  
Ş Öztürk ◽  
MA Karan ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Operating Characteristic ◽  
Troponin T ◽  
Tertiary Care ◽  
Diagnostic Value ◽  
Lower Sensitivity ◽  
Tertiary Care Centre ◽  
Receiver Operating Characteristic Curves ◽  
Turkish Patients

This study compares the diagnostic value of troponin T (TnT) and myoglobin with creatinine kinase (CK) for myocardial infarction (MI) in a tertiary care centre in a developing nation. The study group comprised 33 acute myocardial infarction patients and 27 healthy controls. Receiver operating characteristic curves for TnT, myoglobin and CK were drawn and areas under the curve calculated. At admission, myoglobin levels had greater diagnostic sensitivity than TnT or CK levels. After 2 h, myoglobin and TnT had equal sensitivity and specificity, whereas CK still had lower sensitivity than myoglobin and TnT. After 4 h there was no difference between the tests. It was concluded that myoglobin levels on admission and TnT at 2 h had the greatest diagnostic rate, whereas all the tests were similar after 4 h for MI.

scholarly journals A Four-MicroRNA Panel in Peripheral Blood Identified as an Early Biomarker to Diagnose Acute Myocardial Infarction

2021 ◽  
Vol 12 ◽  
Author(s):  
Liang Chen ◽  
Jie Bai ◽  
Jun Liu ◽  
Huihe Lu ◽  
Koulong Zheng
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Peripheral Blood ◽  
Troponin I ◽  
Characteristic Curve ◽  
Disease Onset ◽  
Diagnostic Value ◽  
Control Group ◽  
Expression Levels ◽  
Creatine Kinase Mb

Objective: This study aimed to evaluate suitable circulating microRNAs (miRNAs) as diagnostic biomarkers of acute myocardial infarction (AMI).Methods: Patients with AMI were enrolled as study participants. All patients with AMI coming from the Second Affiliated Hospital of Nantong University between October 1, 2017 and May 31, 2019 were screened. At the same time, 80 patients with coronary angiographic stenosis <50% during the same period were selected as the control group. Peripheral blood samples were collected at different time points (0, 6, 12, and 24 h after disease onset) to detect the expression of a previously identified promising four-microRNA panel. The expression levels of miRNAs were tested by real-time polymerase chain reaction (RT-PCR), and the receiver operating characteristic curve (ROC) was used to analyze the diagnostic value of circulating miRNAs.Results: Based on the inclusion and exclusion criteria, 80 patients with AMI and 80 controls were enrolled in this study. The expression of circulating miR-1291, miR-217, miR-455-3p, and miR-566 was significantly downregulated in patients with AMI compared with controls. The area under the ROC curve (AUC) of circulating miR-1291, miR-217, miR-455-3p, and miR-566 were 0.82, 0.79, 0.82, and 0.83, respectively. The AUC of these four miRNAs was 0.87 with 83% sensitivity and 87% specificity. The expression peaks of these four miRNAs occurred earlier than those of cardiac troponin I (cTnI) and creatine kinase-MB (CK-MB). Furthermore, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that the targets of these four miRNAs were significantly enriched in several signaling pathways associated with AMI progression.Conclusion: Circulating miR-1291, miR-217, miR-455-3p, and miR-566 expression levels were significantly lower in patients with AMI; and combined, this panel of four miRNAs acted as a novel and potential early diagnostic biomarker of AMI.

scholarly journals Correlation of Platelet Distribution Width (PDW) and Troponin I in Acute Myocardial Infarction

2020 ◽  
Vol 2 (3) ◽  
pp. 124-132
Author(s):  
Maulinda Putri ◽  
Refli Hasan ◽  
Rahmad Isnanta
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Chest Pain ◽  
Troponin I ◽  
Strongly Correlated ◽  
Platelet Distribution Width ◽  
Cross Sectional ◽  
Positive Direction ◽  
Distribution Width ◽  
Artery Disease

Background. Coronary artery disease (CAD) is caused by narrowing of the coronary arteries. In the event of acute myocardial infarction (AMI), there will be an increase in heart markers. Several studies have examined the relationship between Platelet Distribution Width (PDW) and AMI, but there is no specific correlation with troponin as the most sensitive and specific cardiac biomarker for AMI. This study aims to see the correlation PDW values with troponin I in patients with AMI. Method. This study was a cross-sectional method to determine the correlation of PDW variable values ​​with troponin I in patients with AMI. In this study, the sample consisted of 64 people. Results. There is a moderate correlation between PDW and troponin I (r2= 0.72, p <0.001). There is a strong correlation with positive direction between PDW and Troponin I in patients with AMI based on the onset of chest pain (<6 hours and > 6 hours : r2 = 0.647 p <0.001and r2 = 0.756, p <0.001). Conclusion. Platelet Distribution Width (PDW) is strongly correlated with Troponin I in patients with AMI, and based on chest pain onset also has a significantly positive correlation.

scholarly journals A Novel Graphene-Based Nanomaterial Modified Electrochemical Sensor for the Detection of Cardiac Troponin I

2021 ◽  
Vol 9 ◽  
Author(s):  
Jing Li ◽  
Shenwei Zhang ◽  
Li Zhang ◽  
Yu Zhang ◽  
Hua Zhang ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Electrochemical Sensor ◽  
Cardiac Troponin ◽  
Myocardial Injury ◽  
Troponin I ◽  
High Sensitivity ◽  
High Specificity ◽  
Diagnostic Value ◽  
Cardiac Troponin I

Acute myocardial infarction has a high clinical mortality rate. The initial exclusion or diagnosis is important for the timely treatment of patients with acute myocardial infarction. As a marker, cardiac troponin I (cTnI) has a high specificity, high sensitivity to myocardial injury and a long diagnostic window. Therefore, its diagnostic value is better than previous markers of myocardial injury. In this work, we propose a novel aptamer electrochemical sensor. This sensor consists of silver nanoparticles/MoS2/reduced graphene oxide. The combination of these three materials can provide a synergistic effect for the stable immobilization of aptamer. Our proposed aptamer electrochemical sensor can detect cTnl with high sensitivity. After optimizing the parameters, the sensor can provide linear detection of cTnl in the range of 0.3 pg/ml to 0.2 ng/ml. In addition, the sensor is resistant to multiple interferents including urea, glucose, myoglobin, dopamine and hemoglobin.

scholarly journals Diagnostic Value of Soluble Urokinase-Type Plasminogen Activator Receptor in Addition to High-Sensitivity Troponin I in Early Diagnosis of Acute Myocardial Infarction

Biomolecules ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 108 ◽  
Author(s):  
Nils A. Sörensen ◽  
Günay Dönmez ◽  
Johannes T. Neumann ◽  
Julius Nikorowitsch ◽  
Nicole Rübsamen ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Early Diagnosis ◽  
Troponin I ◽  
High Sensitivity ◽  
Diagnostic Value ◽  
High Sensitivity Troponin ◽  
Type Plasminogen Activator ◽  
Urokinase Type Plasminogen Activator ◽  
Plasminogen Activator Receptor

The soluble urokinase-type plasminogen activator receptor (suPAR) is a new marker for immune activation and inflammation and may provide diagnostic value on top of established biomarkers in patients with suspected acute myocardial infarction (AMI). Here, we evaluate the diagnostic potential of suPAR levels on top of high-sensitivity troponin I (hs-TnI) in a cohort of patients with suspected AMI. A total of 1220 patients presenting to the emergency department with suspected AMI were included, of whom 245 were diagnosed with AMI. Median suPAR levels at admission were elevated in subjects with AMI compared to non-AMI (3.8 ng/mL vs 3.3 ng/mL, p = 0.001). In C-statistics, the area under the curve (AUC) regarding the diagnosis of AMI was low (0.57 at an optimized cut-off of 3.7 ng/mL). Moreover, baseline suPAR levels on top of troponin values at admission and hour 1 reduced the number of patients who were correctly ruled-out as non-AMI, and who were correctly ruled-in as AMI. Our study shows that circulating levels of suPAR on top of high-sensitivity troponin I do not improve the early diagnosis of AMI.

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