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Published on: October 12, 2017

Oxidized low-density lipoprotein as a predictor of outcome in patients with unstable coronary artery disease

Nina Johnston1, Tomas Jernberg, Bo Lagerqvist

  • 1Department of Medical Sciences, Cardiology, Cardiothoracic Center, University Hospital, 751 85 Uppsala, Sweden. nina.johnston@akademiska.se

International Journal of Cardiology
|December 13, 2005
PubMed

Insights

Elevated oxidized low-density lipoprotein (OxLDL) indicates a higher risk of recurrent myocardial infarction (MI) in unstable coronary artery disease (CAD) patients, especially those without myocardial damage. OxLDL levels remain stable unless statin therapy is initiated.

Area of Science:

  • Cardiology
  • Biochemistry
  • Clinical Risk Stratification

Background:

  • The prognostic significance of circulating oxidized low-density lipoprotein (OxLDL) in patients with unstable coronary artery disease (CAD) remains unclear.
  • Unstable CAD is a critical condition requiring accurate risk assessment for timely intervention.

Purpose of the Study:

  • To investigate the prognostic value of OxLDL levels in patients with unstable CAD.
  • To determine if OxLDL can predict future myocardial infarction (MI) or mortality.

Main Methods:

  • Plasma OxLDL levels were measured in 433 unstable CAD patients from the FRISC-II trial.
  • Patients were categorized based on median OxLDL levels (76 U/L) and troponin T (TnT) status.
  • Outcomes including mortality and MI were assessed at 2-year follow-up.

Main Results:

  • Elevated OxLDL (>76 U/L) was associated with a nearly twofold increased risk of recurrent MI (OR: 1.90 [1.05-3.39]) after adjusting for other risk factors.
  • The prognostic value of OxLDL was most pronounced in TnT-negative patients, with a significantly higher MI risk (16.9% vs. 1.7%, p=0.004).
  • No significant association was found between OxLDL levels and mortality; OxLDL levels were similar during acute and stable phases unless statin therapy was used.

Conclusions:

  • Elevated OxLDL levels can identify unstable CAD patients at increased risk for future MI, independent of other variables, particularly in those without myocardial damage.
  • OxLDL levels may serve as a valuable biomarker for risk stratification in unstable CAD.
  • Statin therapy appears to influence OxLDL levels, suggesting a potential role in disease management.
Abstract

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