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Joint effects of C-reactive protein and other risk factors on acute coronary events

H Kervinen1, T Palosuo, V Manninen

  • 1Department of Medicine, Hyvinkää Hospital, Sairaalakatu 1, 05850 Hyvinkää, Finland. helena.kervinen@kolumbus.fi

American Heart Journal
|March 29, 2001
PubMed

Insights

Elevated C-reactive protein (CRP) significantly amplifies the risk of coronary events, especially when combined with traditional risk factors like hypertension. Chronic high CRP levels pose a greater threat than transient elevations.

Area of Science:

  • Cardiology
  • Biomarkers
  • Epidemiology

Background:

  • Elevated serum C-reactive protein (CRP) is a known predictor of coronary heart disease (CHD).
  • The study investigated the joint effects of CRP and other risk factors on acute coronary events.

Purpose of the Study:

  • To assess the combined impact of elevated CRP and various risk factors on acute coronary events.
  • To determine if CRP exacerbates risks associated with classic and novel coronary risk factors.

Main Methods:

  • A nested case-control design was employed within the Helsinki Heart Study.
  • Logistic regression analyses were used to evaluate baseline and pre-event CRP levels in relation to myocardial infarction or coronary death.
  • Participants included dyslipidemic middle-aged men, with controls remaining free of coronary events over 8.5 years.

Main Results:

  • Cases (myocardial infarction/coronary death) exhibited higher baseline and pre-event CRP levels than controls (4.4 vs 2.0 mg/L and 6.0 vs 3.6 mg/L, respectively).
  • Chronic CRP elevation yielded a higher relative risk (OR, 3.34) compared to high baseline (OR, 2.24) or pre-event (OR, 2.26) levels alone.
  • Joint effects of CRP with hypertension, low HDL cholesterol, and high leukocyte count showed additive risks, unlike immunoglobulin G-related factors which increased risk independently of CRP.

Conclusions:

  • Elevated C-reactive protein (CRP) potentiates the risk conferred by classic coronary risk factors.
  • The simultaneous presence of high CRP and traditional risk factors significantly increases coronary event risk.
Abstract

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