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Original

Lower levels of the host protective IL-10 in DCM—a feature of autoimmune pathogenesis?

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Pages 478-483 | Received 31 Jan 2008, Accepted 01 Mar 2008, Published online: 07 Jul 2009
 

Abstract

Objectives: To investigate whether cytokine patterns differ with respect to heart failure (HF) etiology, and to study how cytokine concentrations relate to hemodynamic alterations.

Methods: Plasma levels of interleukin-6 (IL-6), interleukin-10 (IL-10), tumor necrosis factor alpha (TNF-α) and high sensitive-CRP (hs-CRP) were analysed with enzyme-linked-immunosorbent serologic assay and turbidimetry in 45 healthy subjects and 89 patients with HF, of whom 65 were diagnosed with dilated cardiomyopathy (DCM) and 24 had ischemic heart disease (IHD).

Results: IL-6, IL-10 and hs-CRP were significantly higher in patients with HF as compared to healthy controls. The IL-10 was significantly lower in patients with DCM as compared to IHD, also when adjusting for clinical variables. Diastolic filling pressure correlated with IL-6, IL-10 and hs-CRP while heart rate (HR) correlated with IL-6 and TNF-α.

Conclusions: Proinflammatory cytokines are elevated in patients with HF and display a positive correlation with filling pressures and HR. Most significant, the regulatory and protective cytokine IL-10 was much lower in patients with DCM as compared to IHD, indicating a differentiation in cytokine patterns with respect to HF etiology.

Acknowledgements

We are indebted to Annie Janssen, Claes-Hakan Bergh, Nedim Selimovic and Bengt Rundqvist for aiding with cardiac catheterization procedures. This study was supported by the Swedish Heart Lung Foundation, the Swedish Research Council (2004–5426) and the Federal Government under the LUA/ALF agreement.

Declaration of interest: None of the authors has any potential financial conflict of interest related to the manuscript.

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