Early effects of statins in patients with coronary artery disease and high C-reactive protein

Am J Cardiol. 2004 Nov 1;94(9):1107-12. doi: 10.1016/j.amjcard.2004.07.074.

Abstract

Statins improve survival in patients with coronary artery disease, especially those with elevated C-reactive protein (CRP). Although some randomized studies have shown a delay in statin-related survival advantage of up to 2 years, recent studies demonstrated early (<2 months) survival benefit in certain patient groups. We hypothesized that this early benefit relates to baseline CRP concentration. Patients (n = 2,924) with significant, angiographically defined coronary artery disease (>/=70% stenosis in >/=1 coronary artery) were followed for an average of 2.4 years after discharged on a statin prescription. CRP was divided into tertiles (<1.2, 1.2 to 1.7, >1.7 mg/dl), and Kaplan-Meier methods were used to determine timing of statin benefit in both the overall population and a propensity score-matched subgroup. Cox regressions (multivariable and propensity score approaches) were used to predict mortality. Statins were prescribed for 28.4% of patients. In the first CRP tertile, no early statin benefit was observed (adjusted hazard ratio 0.69, 95% confidence interval [CI] 0.30 to 1.6, p = 0.39), and survival curves separated after >2 years. However, in the second and the third tertiles, statin survival curves separated much earlier ( approximately 3 months and 1 week, respectively) and statins predicted improved survival (second tertile: hazard ratio 0.63, 95% CI 0.32 to 1.2, p = 0.17; third tertile: hazard ratio 0.35, 95% CI 0.18 to 0.67, p = 0.002). Propensity score analysis confirmed both statin benefit and early timing. Thus, statin use in patients with high CRP provides not only a larger but also a significantly earlier absolute survival benefit than statin use in patients with lower CRP. This provides further evidence of an anti-inflammatory effect of statins.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • C-Reactive Protein / drug effects*
  • C-Reactive Protein / metabolism*
  • Coronary Artery Disease / drug therapy*
  • Coronary Artery Disease / epidemiology
  • Coronary Artery Disease / metabolism*
  • Female
  • Follow-Up Studies
  • Humans
  • Hydroxymethylglutaryl-CoA Reductase Inhibitors / therapeutic use*
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Myocardial Infarction / drug therapy
  • Myocardial Infarction / epidemiology
  • Myocardial Infarction / metabolism
  • Prospective Studies
  • Risk Factors
  • Survival Analysis
  • Time Factors
  • Treatment Outcome

Substances

  • Hydroxymethylglutaryl-CoA Reductase Inhibitors
  • C-Reactive Protein