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Effect of Low High-Density Lipoprotein Level on Endothelial Activation and Prothrombotic Processes in Coronary Artery
Magdalena Lampka1, Dorota Olszewska-Słonina1, Iga Hołyńska-Iwan1
1Department of Pathobiochemistry and Clinical Chemistry, Faculty of Pharmacy, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, 87-100 Toruń, Poland.
Insights
Low high-density lipoprotein cholesterol (HDL-C) in coronary artery disease (CAD) patients is linked to increased inflammation and clotting. A low HDL-C and high LDL-C/HDL-C ratio better indicate atherosclerosis than LDL-C alone.
Area of Science:
- Cardiovascular Medicine
- Biochemistry
- Atherosclerosis Research
Background:
- High-density lipoproteins (HDL) are crucial in preventing atherosclerosis.
- Coronary artery disease (CAD) involves complex inflammatory and thrombotic processes.
- Understanding the role of HDL-C in these processes is vital for patient outcomes.
Purpose of the Study:
- To investigate the association between serum HDL-C levels and markers of proinflammatory and prothrombotic activation in CAD patients.
- To compare these markers in patients with acute myocardial infarction (AMI) and stable angina pectoris (SA) against a control group.
Main Methods:
- Serum HDL-C, LDL-C, triglycerides, and other biomarkers (sE-selectin ligand, CD40, von Willebrand Factor, intercellular adhesion molecule-1) were measured.
- Patients were categorized into AMI, SA, and control groups.
- Statistical analysis was performed to compare biomarker levels across groups.
Main Results:
- Patients with CAD (AMI and SA) exhibited lower HDL-C and a higher LDL-C/HDL-C index compared to controls.
- SA patients showed lower total cholesterol, LDL-C, and sE-selectin ligand, but higher triglycerides and CD40 than controls and AMI patients.
- Elevated von Willebrand Factor and intercellular adhesion molecule-1 were observed in both CAD groups.
Conclusions:
- Low HDL-C concentration in CAD patients may exacerbate pro-inflammatory endothelial activation and prothrombotic tendencies.
- The LDL-C/HDL-C ratio and HDL-C levels appear to be more sensitive indicators of atherogenic processes than LDL-C alone.
Abstract:
High-density lipoproteins (HDL) play an important role in the prevention of atherosclerosis. The aim of the study was to assess the relationship between serum HDL-C concentration and proinflammatory/prothrombic activation in coronary artery disease (CAD) patients. The study group included 27 acute myocardial infarction (AMI) patients and 30 stable angina pectoris (SA) patients. The control group consisted of 23 people without cardiac symptoms. In the AMI and SA groups, a lower HDL-C and a higher LDL-C/HDL-C index were observed. The SA patients had lower total cholesterol, LDL-C, sE-selectin ligand, as well as higher triglycerides and CD40 concentration in comparison with both the control and AMI groups. A higher von Willebrand Factor and intercellular adhesion molecule-1 were found in both study groups. Low HDL-C concentration in the CAD patients may intensify pro-inflammatory endothelial activation and prothrombotic processes. A low concentration of HDL-C and a high value of the LDL-C/HDL-C index seem to be better indices of atherogenic processes than the LDL-C concentration alone.
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