Serum C-reactive protein and circulating endothelial cells in patients with acute myocardial infarction

Area of Science:

• Cardiovascular Medicine
• Hematology
• Inflammation Research

Background:

• Circulating endothelial cells (CECs) serve as in vivo indicators of vascular injury and endothelial damage.
• C-reactive protein (CRP) is a well-established sensitive marker for inflammation.

Purpose of the Study:

• To investigate the presence and levels of CECs in patients with acute myocardial infarction (AMI).
• To evaluate the clinical associations of CECs, particularly their relationship with CRP and potential infection markers.

Main Methods:

• CECs were isolated from peripheral blood of AMI patients and healthy controls using immunomagnetic beads targeting CD146.
• Endothelial origin of isolated cells was confirmed via von Willebrand Factor (vWF) and CD31 labeling, and electron microscopy.
• CRP levels were measured, and correlation analyses were performed between CEC counts and clinical parameters.

Main Results:

• AMI patients exhibited significantly higher CEC counts (52 cells/ml) and CRP levels (7.98 mg/l) compared to healthy controls (10.5 cells/ml and 1.41 mg/l, respectively).
• A significant positive correlation was observed between CEC counts and CRP levels (r=0.505, p=0.001).
• Apoptosis and necrotic rates of CECs in AMI patients were 25% and 19%, respectively; CEC numbers did not correlate with traditional risk factors.

Conclusions:

• Elevated CECs and CRP levels are strongly associated in patients with AMI.
• Combined assessment of CECs and CRP may offer a more comprehensive reflection of endothelial cell injury in acute myocardial infarction.