Endothelial progenitor cells and left ventricle function in patients with acute myocardial infarction: potential
Wiktor Kuliczkowski1, Roksolana Derzhko, Iwona Prajs
1Department of Cardiology, Wroclaw Medical University, Wroclaw, Poland.
Insights
Endothelial progenitor cells (EPCs) are mobilized after heart attack (myocardial infarction). Higher levels of a specific EPC subtype (CD31+/CD133+) correlate with better heart function (left ventricular ejection fraction) post-treatment.
Area of Science:
- Cardiovascular Research
- Cell Biology
- Regenerative Medicine
Background:
- Endothelial progenitor cells (EPCs) are crucial for vascular repair and angiogenesis.
- The precise role of EPCs in left ventricular ejection fraction (LVEF) following acute myocardial infarction (MI) treated with primary percutaneous coronary intervention (PCI) requires further elucidation.
Purpose of the Study:
- To investigate the impact of distinct EPC populations on LVEF during and up to 6 months after acute MI in patients undergoing primary PCI.
Main Methods:
- Flow cytometry was used to analyze specific EPC subtypes (CD34⁺/CD133⁺/CD45⁻, CD34⁺/CD31⁺/CD45⁻, CD34⁺/CD105⁺/CD45⁻, and CD31⁺/CD133⁺/CD45⁻).
- Echocardiography was performed concurrently with EPC measurements in 34 acute anterior wall MI patients and 19 healthy controls.
- Blood samples were collected at 24 hours, 7 days, and 6 months post-PCI.
Main Results:
- A significant increase in CD34⁺/CD133⁺/CD45⁻, CD34⁺/CD105⁺/CD45⁻, and CD31⁺/CD133⁺/CD45⁻ EPCs was observed at 7 days post-PCI compared to other time points.
- Patients exhibiting preserved LVEF at 7 days post-PCI showed higher levels of CD31⁺/CD133⁺/CD45⁻ EPCs.
- Elevated levels of the CD31⁺/CD133⁺/CD45⁻ EPC subtype were strongly associated with sustained LVEF preservation up to 6 months post-MI.
Conclusions:
- Acute anterior wall MI treated with primary PCI triggers enhanced EPC mobilization.
- The CD31⁺/CD133⁺/CD45⁻ EPC subtype appears to be a significant biomarker for preserved LVEF following MI.
- These findings may inform future therapeutic strategies targeting vascular repair after myocardial infarction.
Abstract:
Endothelial progenitor cells (EPCs) play a key role in angiogenesis and vascular repair, although their exact functions are still disputable. The impact of EPC on left ventricular ejection fraction (LVEF) during acute myocardial infarction (MI) in patients treated with primary percutaneous coronary intervention (PCI) is also under investigation. The aim of this study was to assess the impact of different populations of EPC on LVEF during and 6 months after acute MI treated with primary PCI. The study included 34 patients with documented acute anterior wall MI. The control group consisted of 19 apparently healthy subjects. Blood for EPC assessments was obtained during the first 24 hours after MI and at 7 days and 6 months after PCI. CD34⁺/CD133⁺/CD45⁻, CD34⁺/CD31⁺/CD45⁻, CD34⁺/CD105⁺/CD45⁻, and CD31⁺/CD133⁺/CD45⁻ cell types were studied by flow cytometry. Echocardiography has been performed simultaneously with the EPC measurements. We observed a significant elevation of CD34⁺/CD133⁺/CD45⁻, CD34⁺/CD105⁺/CD45⁻, and CD31⁺/CD133⁺/CD45⁻ EPC at 7 days after PCI in comparison with 24 hours and 6 months after the MI. Patients with preserved LVEF at 7 days after PCI had also higher levels of CD31⁺/CD133⁺/CD45⁻. Acute anterior wall MI treated with primary PCI is followed by enhanced mobilization of EPC among which a high level of CD31⁺/CD133⁺/CD45⁻ subtype was strongly associated with the most preserved LVEF for up to 6 months after the index event. These data may provide some insight for future therapeutic strategies.
