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Published on: January 28, 2020
[Changes in plasma concentration of interleukin-6 in elderly patients with coronary artery disease complicated with
1Department of Geriatrics, Second Xiangya Hospital, Central South University, Changsha 410011, China.
Insights
Elevated plasma interleukin-6 (IL-6) levels indicate more severe coronary artery disease (CAD) with heart failure. Higher IL-6 correlates with poorer left ventricular ejection fraction and predicts re-hospitalization risk in CAD patients.
Area of Science:
- Cardiology
- Immunology
- Geriatrics
Context:
- Coronary artery disease (CAD) is a leading cause of mortality in the elderly.
- Heart failure (HF) is a common complication of CAD, associated with increased morbidity and mortality.
- Interleukin-6 (IL-6) is a pro-inflammatory cytokine implicated in cardiovascular disease pathogenesis.
Purpose:
- To investigate plasma interleukin-6 (IL-6) concentrations in elderly patients with coronary artery disease (CAD).
- To compare IL-6 levels between CAD patients with and without heart failure, and with normal subjects.
- To explore the correlation between IL-6 levels, left ventricular ejection fraction (LVEF), and risk of re-hospitalization in CAD patients.
Summary:
- Plasma IL-6 levels were significantly higher in elderly CAD patients with heart failure compared to those without heart failure and normal controls.
- A significant negative correlation was observed between plasma IL-6 concentration and left ventricular ejection fraction (LVEF) (r = -0.60, P < 0.01).
- CAD patients with severe heart failure requiring re-hospitalization exhibited significantly higher plasma IL-6 levels than those without readmission (P < 0.01).
Impact:
- Plasma IL-6 concentration may serve as a valuable biomarker for assessing disease severity in elderly CAD patients with heart failure.
- IL-6 levels could offer prognostic information, aiding in the prediction of adverse outcomes and guiding clinical management in CAD.
- These findings highlight the role of inflammation, as indicated by IL-6, in the progression and prognosis of CAD with heart failure.
Objective:
The aim of this study was to observe the concentrations of plasma interleukin-6(IL-6) in elderly patients with coronary artery disease(CAD).
Methods:
Forty-eight CAD patients with heart failure, 15 CAD patients without heart failure, and 30 normal subjects were studied. The plasma concentration of interleukin-6(IL-6) was measured by enzyme-linked immunosorbent assay.
Results:
The plasma concentration of IL-6 in CAD patients with heart failure was significantly higher than that without heart failure and normal subjects, respectively (P < 0.05). There was no significant difference between CAD patients without heart failure and normal subjects in the plasma levels of IL-6. There was a negative correlation between the concentration of IL-6 and left ventricular ejection fraction(LVEF) (r = -0.60, P < 0.01). The plasma concentration of IL-6 of the group with re-hospitalization because of severe heart failure was significantly higher than that of the group without hospital readmission (P < 0.01).
Conclusion:
The plasma concentration of IL-6 in CAD patients with heart failure may provide the important information for the severity of the disease and for the prognostic prediction in the disease.
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