association between circulating oxidized ldl cholesterol levels and premature myocardial infarction: a case-control study

Background: acute myocardial infarction (mi) occurs less frequently in younger individuals compared to older ones. the development of atherosclerotic plaque is primarily linked to oxidized low-density lipoprotein cholesterol (ox-ldl).objectives: this study aimed to investigate circulating ox-ldl levels in individuals with premature mi and compare them to controls without a history of ischemic heart disease.methods: in this case-control study, 35 patients who experienced a premature mi within 24 hours of symptom onset and met the age criteria (men ≤ 55 years and women ≤ 65 years) were recruited as cases. for comparison, 35 age and sex-matched individuals without a history of ischemic heart disease were selected as controls.results: analysis of circulating ox-ldl levels revealed a significant elevation in patients with premature mi compared to controls (2.25 ± 1.78 vs. 1.04 ± 1.17 µg/dl; p = 0.002). elevated ox-ldl levels were associated with a 1.70-fold increased risk of premature mi compared to healthy individuals (95% ci: 1.16 - 2.49; p = 0.007).conclusions: this study demonstrates an association between elevated ox-ldl levels and premature mi, particularly in younger individuals. measuring ox-ldl levels may help predict heart attack risk, and interventions aimed at reducing these levels could potentially prevent atherosclerosis.