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Updated: Feb 5, 2026

Acute Myocardial Infarction in Rats
Published on: February 16, 2011
Correlations of Circulating Cell-Free DNA With Clinical Manifestations in Acute Myocardial Infarction
Jin Xie1, Jiawei Yang1, Pei Hu1
1Department of Cardiology, Jingzhou Central Hospital, the Second Clinical Medical College, Yangtze University, Jingzhou, Hubei Sheng, China.
Insights
Circulating cell free DNA (cfDNA) levels are significantly elevated in acute myocardial infarction (AMI) patients, correlating with disease severity. Monitoring cfDNA shows potential for identifying high-risk cardiovascular disease individuals.
Area of Science:
- Biomarkers
- Cardiovascular Disease Research
- Molecular Diagnostics
Background:
- Acute myocardial infarction (AMI) is a critical cardiovascular disease (CVD).
- Circulating cell free DNA (cfDNA) is increasingly studied as a potential biomarker.
- The clinical utility of cfDNA in AMI requires further investigation.
Purpose of the Study:
- To evaluate the role of cfDNA in patients with AMI.
- To correlate cfDNA levels with clinical features and disease status in CVD patients.
- To assess the value of serial cfDNA monitoring for disease progression and complications.
Main Methods:
- Quantification of cfDNA using PicoGreen dsDNA assay.
- Serial blood sampling from 130 CVD patients (100 with AMI) and 30 healthy volunteers.
- Short-term and medium-term monitoring of cfDNA concentrations.
Main Results:
- Mean cfDNA concentration was 5-fold higher in AMI patients compared to healthy volunteers.
- cfDNA levels were elevated in AMI patients and higher than in other CVD patients.
- Short-term monitoring revealed trends linked to disease severity and complications.
- Medium-term monitoring identified two groups: those with normalized cfDNA and those with persistently high levels.
Conclusions:
- cfDNA measurement in CVD patients offers a novel monitoring approach.
- cfDNA has potential clinical applications for identifying high-risk individuals.
- Serial cfDNA monitoring may provide insights into disease trajectory and prognosis.
Background:
The objective of the study was to examine the potential use of circulating cell free DNA (cfDNA) in acute myocardial infarction (AMI) patients and correlate it with clinical features. Serial monitoring was conducted to assess any associations to disease.
Methods:
Quantification of cfDNA was performed on 130 cardiovascular disease (CVD) patients as well as 30 healthy volunteers. Serial samplings were conducted using PicoGreen dsDNA assay. Of the 130 patients with CVD, 100 had an AMI and measurements were taken during treatment. Short and medium intervals serial sampling of patients' blood were undertaken.
Results:
The results were highly correlative of CVD disease status. The mean concentration of cfDNA in patients with AMI was 5 folds higher during the onset of disease compared with healthy volunteers. The cfDNA content was also higher than other patients with CVD. Interestingly, short term monitoring of patients with AMI showed distinct trends that highlighted the severity of the disease and linked to complication events. Medium term monitoring showed 2 distinctive groups with 1 that had their cfDNA returned to basal levels and the other with persistently elevated cfDNA levels.
Conclusions:
Measuring cfDNA in patients with CVD offers an alternative approach to monitor the disease and has potential clinical applications to identify high-risk individuals.
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