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Published on: March 8, 2013
Chemotactic activity of serum obtained from patients with idiopathic dilated cardiomyopathy
H H Sigusch1, M H Lehmann, D Reinhardt
1University of Jena, Department of Internal Medicine, Division of Cardiology, 07740 Jena, Germany. Holger.Sigusch@med.uni-jena.de
Insights
Serum from idiopathic dilated cardiomyopathy patients exhibits high chemotactic activity, linked to elevated monocyte chemoattractant protein-1 (MCP-1) levels. This finding offers insights into heart failure pathogenesis.
Area of Science:
- Cardiovascular Medicine
- Immunology
- Biochemistry
Background:
- Elevated alpha- and beta-chemokines are implicated in heart failure.
- Understanding chemokine roles in idiopathic dilated cardiomyopathy (IDCM) is crucial.
Purpose of the Study:
- To investigate the relationship between serum chemotactic activity and circulating chemokine levels in IDCM patients.
- To compare these levels with coronary artery disease (CAD) patients and healthy controls.
Main Methods:
- Quantified serum chemokine levels (MCP-1, MIP1-alpha, RANTES, IL-8, TNF-alpha) in IDCM, CAD (normal and depressed left ventricular function), and control groups.
- Assessed serum chemotactic activity using an in vitro chemotaxis assay.
Main Results:
- IDCM patients' sera displayed significantly higher chemotactic activity (5475 +/- 681 cells) compared to controls (1850 +/- 215 cells), CAD-1 (3325 +/- 275 cells), and CAD-2 (2800 +/- 275 cells).
- Elevated circulating monocyte chemoattractant protein-1 (MCP-1) levels were significantly associated with the heightened chemotactic activity observed in IDCM sera.
Conclusions:
- Serum from IDCM patients demonstrates potent chemotactic activity.
- Elevated MCP-1 levels are strongly correlated with this increased chemotactic effect in IDCM, suggesting a key role in the disease.
Abstract:
Elevated circulating levels of alpha- and beta-chemokines in heart failure have been reported. The objective of this study was to investigate the interrelation of chemotactic activity of serum and circulating chemokine levels in patients suffering from idiopathic dilated cardiomyopathy (IDCM). Chemokine serum levels (MCP-1, MIP1-alpha, RANTES, IL-8 and TNF-alpha) were determined in patients with IDCM (n = 10), patients with coronary artery disease with normal (CAD-1; n = 10) or depressed (CAD-2; n = 10) left ventricular function and healthy controls (n = 10). The chemotactic effect of sera obtained from these groups was measured using an in vitro chemotaxis assay. Sera obtained from IDCM (5475 +/- 681 cells) showed the highest chemotactic activity when compared to controls (1850 +/- 215 cells), CAD-1 (3325 +/- 275 cells) and CAD-2 (2800 +/- 275 cells, P < 0.05) associated with significantly higher circulating MCP-1 levels. Sera obtained from IDCM patients show a high chemotactic activity associated with significantly elevated circulating MCP-1.
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