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Published on: March 15, 2022
Elevated platelet reactivity in stable angina pectoris without significant coronary flow obstruction
P Järemo1, M Milovanovic, Tl Lindahl
1Department of Internal Medicine, the Vrinnevi Hospital, Norrköping, Sweden. jaremo@beta.telenordia.se
Journal of Cardiovascular Medicine (Hagerstown, Md.)
|January 15, 2008
Summary
Patients with angina pectoris and no major coronary artery blockages show increased platelet activity. This suggests a link between heightened platelet reactivity and this type of angina.
Area of Science:
- Cardiology
- Vascular Biology
- Platelet Physiology
Background:
- Angina pectoris can arise from causes other than major coronary artery obstructions, such as Prinzmetal angina and small vessel disease.
- Understanding these alternative causes is crucial for accurate diagnosis and treatment.
Purpose of the Study:
- To investigate platelet activity in patients experiencing stable angina pectoris without significant obstructions in major coronary arteries.
- To compare platelet reactivity between patients with and without significant coronary artery disease.
Main Methods:
- Elective coronary angiography was performed on individuals with stable angina pectoris.
- Patients with diabetes mellitus were excluded to ensure study homogeneity.
- Platelet activity was measured in vitro using thrombin-receptor activating peptide (TRAP-6) and adenosine diphosphate (ADP) stimulation.
Main Results:
- Patients with angina pectoris and no significant major coronary artery obstructions exhibited enhanced platelet reactivity.
- This heightened reactivity was observed when platelets were stimulated with both TRAP-6 and ADP.
- Statistical significance was noted for both TRAP-6 and ADP stimulation concentrations.
Conclusions:
- Angina pectoris occurring without significant impediments in major epicardial arteries is associated with increased platelet reactivity.
- Augmented platelet reactivity may play a role in the pathophysiology of angina pectoris in the absence of obstructive coronary artery disease.
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