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Published on: March 1, 2011
Increased plasma concentrations of interleukin-18 in acute coronary syndromes
Z Mallat1, P Henry, R Fressonnet
1Institut National de la Santé et de la Recherche Médicale, INSERM U541, Hôpital Lariboisiére, 41, Bd de la Chapelle, 75475 Paris cedex 10, France. ziad.mallat@inserm.lrb.ap-hop-paris.fr
Objective:
To examine the relation between plasma concentrations of interleukin-18 (IL-18), the interferon gamma inducing factor, and clinical instability of coronary artery disease.
Design And Setting:
Observational study in a university hospital.
Patients:
11 patients with unstable angina and negative troponin I, 21 patients with acute non-Q wave myocardial infarction (MI), 21 patients with acute Q wave MI, 9 patients with stable angina, and 11 controls.
Main Outcome Measures:
Plasma IL-18 concentrations and their relation to clinical instability and myocardial dysfunction.
Results:
Plasma concentrations of IL-18 were significantly increased in the unstable angina and MI groups in comparison with the stable angina and control groups (p < 0.01). No difference in IL-18 concentrations were found between patients with unstable angina, patients with non-Q wave MI, and patients with Q wave MI. Plasma IL-18 concentrations significantly correlated with decreased left ventricular ejection fraction (p = 0.01).
Conclusions:
Plasma IL-18 concentrations are increased in patients with acute coronary syndromes and correlate with the severity of myocardial dysfunction.
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