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Published on: March 1, 2011
Elevated interleukin-1beta in pericardial fluid of patients with ischemic heart disease
J Oyama1, H Shimokawa, S Morita
1Department of Cardiovascular Medicine, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan.
Insights
Elevated interleukin-1 beta in pericardial fluid indicates greater ischemic heart disease extent. This cytokine may also directly contribute to coronary atherosclerosis progression.
Area of Science:
- Cardiovascular Research
- Immunology
- Biochemistry
Background:
- Inflammatory cytokines are implicated in atherosclerosis and heart failure pathogenesis.
- Interleukin-1 beta (IL-1β) treatment promotes coronary arteriosclerosis and impairs cardiac function.
- Pericardial fluid cytokines may indicate coronary atherosclerosis severity and promote its progression.
Purpose of the Study:
- To investigate the significance of cytokine concentrations in pericardial fluid of cardiovascular disease patients.
- To assess the relationship between pericardial cytokines and specific heart conditions.
Main Methods:
- Measured 10 major cytokines in pericardial fluid from 56 patients undergoing open heart surgery.
- Patients were categorized into ischemic heart disease (IHD), valvular heart disease (VHD), and congenital heart disease (CHD) groups.
Main Results:
- Pericardial IL-1β concentrations were significantly higher in the IHD group compared to VHD and CHD groups (P < 0.05).
- No significant differences in other cytokine levels were observed among groups.
- In the IHD group, elevated IL-1β was noted in patients with emergency operations or unstable angina.
Conclusions:
- Pericardial IL-1β concentrations may serve as a marker for the extent of ischemic heart disease.
- Elevated IL-1β in pericardial fluid could directly contribute to the progression of coronary atherosclerosis.
Background:
Inflammatory cytokines may play an important role in the pathogenesis of atherosclerosis and heart failure. We have previously demonstrated that long-term treatment with interleukin (IL)-1beta in the coronary artery and myocardium promotes coronary arteriosclerosis and impairs cardiac function, respectively. The cytokines in pericardial fluid may reflect the extent of coronary atherosclerosis and may also directly promote the atherosclerotic process. This study was designed to examine the significance of cytokine concentrations in pericardial fluid of patients with cardiovascular disease.
Methods:
We measured concentrations of 10 major cytokines in the pericardial fluid of 56 consecutive patients obtained during open heart surgery, 27 with ischemic heart disease (IHD group), 21 with valvular heart disease (VHD group) and eight with congenital heart disease (CHD group).
Results:
The pericardial concentrations of IL-1beta (pg/ml) were significantly higher in the IHD group (60 +/- 15) than in the VHD (29 +/- 5) or the CHD group (26 +/- 4) (P < 0.05 both). There was no significant difference in pericardial concentrations of other cytokines among the three groups. In the IHD group, the IL-1beta concentrations were significantly elevated in patients who had undergone emergency operations or in those with unstable angina.
Conclusions:
These results suggest that pericardial concentrations of IL-1beta may reflect the extent of ischemic heart disease and that elevated IL-1beta concentrations in pericardial fluid may also directly promote the process of coronary atherosclerosis.
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