Age modulates the relationship between platelet-to-lymphocyte ratio and coronary artery disease

Abstract

Background Thrombocytosis and inflammation are vital elements in the pathogenesis of atherosclerosis. The platelet-to-lymphocyte ratio (PLR) is a novel biomarker that combines these parameters and has been shown to be associated with cardiovascular disease (CVD). This study aimed to determine whether PLR correlates with coronary artery disease (CAD) in high-risk patients, and if the relationship is affected by age. Methods Consecutive patients referred for coronary angiogram were evaluated (n = 822). with 608 patients demonstrating CAD, compared to 214 patients with normal coronary arteries. Patients were stratified into premature CAD (age < 55) and non-premature CAD (age ≥ 55). High and low..