Subacute inflammatory activation in subjects with acute coronary syndrome and left ventricular dysfunction - PubMed (original) (raw)

Subacute inflammatory activation in subjects with acute coronary syndrome and left ventricular dysfunction

Luisa De Gennaro et al. Inflammation. 2012 Feb.

Abstract

Several lines of evidence indicate that increased inflammatory cytokine levels can be used for risk prediction in patients with acute coronary syndrome (ACS). This study therefore aimed to evaluate correlations between levels of soluble interleukin (IL)-2 receptor (sIL-2r), IL-6, and IL-8 and in-hospital incidence of acute heart failure (AHF) and left ventricular (LV) systolic dysfunction in the subacute phase of ACS. In 48 consecutive patients with ACS, circulating levels of sIL-2r, IL-6, and IL-8 were ascertained 72-96 h after onset of symptoms. Clinical data, LV function, and in-hospital incidence of AHF were also evaluated. IL-8 levels were significantly higher in patients with pulmonary edema (1,829 ± 2,496 vs 456 ± 624 pg/ml, p < 0.05); sIL-2r, IL-6, and IL-8 levels were increased proportionally to Killip class (r = 0.35, p < 0.05; r = 0.48, r = 0.47, p < 0.01) and in patients with LV ejection fraction (LVEF) < 30%. Levels of sIL-2r were inversely related to LVEF in subjects with acute myocardial infarction (r = -0.51, p < 0.05). Soluble IL-2r and IL-8 levels were related to mitral regurgitation severity (r = 0.34, p < 0.05; r = 0.37, p < 0.05). Levels of sIL-2 were proportional to LV end-diastolic diameter (r = 0.49, p < 0.001) and LV end-systolic diameter (r = 0.58, p < 0.001). Number of cytokines with circulating values above upper level of normal was significantly correlated with Killip class and LVEF (r = 0.40, r = -0.38, p < 0.05). sIL-2r, IL-6, and IL-8 are increased in patients with ACS and systolic dysfunction or AHF. These data suggest that inflammatory cytokine activity detectable in peripheral blood may be useful in identifying subjects with a worse clinical course.

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