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Plasma levels of microRNA-499 provide an early indication of perioperative myocardial infarction in coronary artery bypass graft patients.

Yao Y, Du J, Cao X, Wang Y, Huang Y, Hu S, Zheng Z - PLoS ONE (2014)

Bottom Line: Importantly, miR levels peaked as early as 1-3 hours, whereas cTnI levels peaked at 6 hours after declamping.Peak plasma concentrations of miRs correlated significantly with cTnI (miR-499, r = 0.583, P = 0.001; miR-133a, r = 0.514, P = 0.006; miR-133b, r = 0.437, P = 0.05), indicating the degree of myocardial damage.The data analysis revealed that miR-499 had higher sensitivity and specificity than cTnI, and indicated that miR-499 could be an independent risk factor for PMI.

View Article: PubMed Central - PubMed

Affiliation: Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Cardiovascular Diseases, National Center for Cardiovascular Diseases, Peking, China; Department of Cardiac Surgery, Fuwai Hospital and Cardiovascular Institute, Peking, China; Key Laboratory of Cardiac Regenerative Medicine, Ministry of Health, National Center for Cardiovascular Diseases, Peking, China.

ABSTRACT

Background: Recent studies indicated that microRNAs (miRNAs, miRs) were important for many biological and pathological processes, and they might be potential biomarkers for cardiovascular diseases. The present study aims to determine the release patterns of miRNAs in cardiac surgery and to analyze the ability of miRs to provide early prediction of perioperative myocardial infarction (PMI) in patients undergoing coronary artery bypass graft (CABG) surgery.

Methodology/principal findings: Thirty on-pump CABG patients were recruited in this study; and miR-499, miR-133a and miR-133b, cardiac troponin I (cTnI) were selected for measurement. Serial plasma samples were collected at seven perioperative time points (preoperatively, and 1, 3, 6, 12, 24, and 48 hours after declamping) and were tested for cTnI and miRs levels. Importantly, miR levels peaked as early as 1-3 hours, whereas cTnI levels peaked at 6 hours after declamping. Peak plasma concentrations of miRs correlated significantly with cTnI (miR-499, r = 0.583, P = 0.001; miR-133a, r = 0.514, P = 0.006; miR-133b, r = 0.437, P = 0.05), indicating the degree of myocardial damage. In addition, 30 off-pump CABG patients were recruited; miR-499 and miR-133a levels were tested, which were significantly lower in off-pump group than in on-pump group. A prospective cohort of CABG patients (n = 120) was recruited to study the predictive power of miRs for PMI. The diagnosis of PMI strictly adhered to the principles of universal definition of myocardial infarction. The data analysis revealed that miR-499 had higher sensitivity and specificity than cTnI, and indicated that miR-499 could be an independent risk factor for PMI.

Conclusion: Our results demonstrate that circulating miR-499 is a novel, early biomarker for identifying perioperative myocardial infarction in cardiac surgery.

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Related in: MedlinePlus

Study protocol.CABG, coronary artery bypass graft.
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pone-0104618-g001: Study protocol.CABG, coronary artery bypass graft.

Mentions: The study population included adult patients, referred for coronary artery bypass graft surgery at Fu Wai Hospital between October 2012 and July 2013. Emergencies, reoperations, abnormal preoperative cTnI and combined procedures were excluded. The clinical data of the selected patients are outlined in detail in Table 1 and Table 2. The study design is shown in Figure 1. In step I, 30 consecutive patients scheduled for on-pump CABG were enrolled. MiR-133a, miR-133b and miR-499 levels were serially detected from plasma samples. We studied their release patterns and their association with myocardial damage. In addition, 30 off-pump CABG patients were recruited. We tested and compared the miR-499 and miR-133a levels between the two groups.


Plasma levels of microRNA-499 provide an early indication of perioperative myocardial infarction in coronary artery bypass graft patients.

Yao Y, Du J, Cao X, Wang Y, Huang Y, Hu S, Zheng Z - PLoS ONE (2014)

Study protocol.CABG, coronary artery bypass graft.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4128681&req=5

pone-0104618-g001: Study protocol.CABG, coronary artery bypass graft.
Mentions: The study population included adult patients, referred for coronary artery bypass graft surgery at Fu Wai Hospital between October 2012 and July 2013. Emergencies, reoperations, abnormal preoperative cTnI and combined procedures were excluded. The clinical data of the selected patients are outlined in detail in Table 1 and Table 2. The study design is shown in Figure 1. In step I, 30 consecutive patients scheduled for on-pump CABG were enrolled. MiR-133a, miR-133b and miR-499 levels were serially detected from plasma samples. We studied their release patterns and their association with myocardial damage. In addition, 30 off-pump CABG patients were recruited. We tested and compared the miR-499 and miR-133a levels between the two groups.

Bottom Line: Importantly, miR levels peaked as early as 1-3 hours, whereas cTnI levels peaked at 6 hours after declamping.Peak plasma concentrations of miRs correlated significantly with cTnI (miR-499, r = 0.583, P = 0.001; miR-133a, r = 0.514, P = 0.006; miR-133b, r = 0.437, P = 0.05), indicating the degree of myocardial damage.The data analysis revealed that miR-499 had higher sensitivity and specificity than cTnI, and indicated that miR-499 could be an independent risk factor for PMI.

View Article: PubMed Central - PubMed

Affiliation: Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Cardiovascular Diseases, National Center for Cardiovascular Diseases, Peking, China; Department of Cardiac Surgery, Fuwai Hospital and Cardiovascular Institute, Peking, China; Key Laboratory of Cardiac Regenerative Medicine, Ministry of Health, National Center for Cardiovascular Diseases, Peking, China.

ABSTRACT

Background: Recent studies indicated that microRNAs (miRNAs, miRs) were important for many biological and pathological processes, and they might be potential biomarkers for cardiovascular diseases. The present study aims to determine the release patterns of miRNAs in cardiac surgery and to analyze the ability of miRs to provide early prediction of perioperative myocardial infarction (PMI) in patients undergoing coronary artery bypass graft (CABG) surgery.

Methodology/principal findings: Thirty on-pump CABG patients were recruited in this study; and miR-499, miR-133a and miR-133b, cardiac troponin I (cTnI) were selected for measurement. Serial plasma samples were collected at seven perioperative time points (preoperatively, and 1, 3, 6, 12, 24, and 48 hours after declamping) and were tested for cTnI and miRs levels. Importantly, miR levels peaked as early as 1-3 hours, whereas cTnI levels peaked at 6 hours after declamping. Peak plasma concentrations of miRs correlated significantly with cTnI (miR-499, r = 0.583, P = 0.001; miR-133a, r = 0.514, P = 0.006; miR-133b, r = 0.437, P = 0.05), indicating the degree of myocardial damage. In addition, 30 off-pump CABG patients were recruited; miR-499 and miR-133a levels were tested, which were significantly lower in off-pump group than in on-pump group. A prospective cohort of CABG patients (n = 120) was recruited to study the predictive power of miRs for PMI. The diagnosis of PMI strictly adhered to the principles of universal definition of myocardial infarction. The data analysis revealed that miR-499 had higher sensitivity and specificity than cTnI, and indicated that miR-499 could be an independent risk factor for PMI.

Conclusion: Our results demonstrate that circulating miR-499 is a novel, early biomarker for identifying perioperative myocardial infarction in cardiac surgery.

Show MeSH
Related in: MedlinePlus