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Plasma YKL-40 levels are elevated in patients with chronic heart failure
Camilla Noelle Rathcke1, Caroline Kistorp, Ilan Raymond
1Department of Endocrinology, Copenhagen University Hospital Herlev, Denmark. cnr@dadlnet.dk
Insights
Plasma YKL-40 levels are higher in congestive heart failure (CHF) patients but do not predict mortality or cardiovascular events. Elevated YKL-40 in CHF may stem from other conditions, not solely inflammation.
Area of Science:
- Biochemistry
- Cardiology
- Inflammation markers
Background:
- Congestive heart failure (CHF) is linked to chronic low-grade inflammation and elevated biomarkers.
- YKL-40, a specific biomarker, increases with cardiovascular disease (CVD) severity and correlates with mortality.
Purpose of the Study:
- To investigate plasma YKL-40 levels in CHF patients.
- To evaluate the predictive value of YKL-40 for overall mortality and recurrent cardiovascular outcomes in CHF.
Main Methods:
- Plasma YKL-40 levels were measured in 194 CHF patients.
- A control group of 117 age-matched individuals without CVD was included for comparison.
Main Results:
- CHF patients exhibited significantly higher median YKL-40 levels (106 ng/ml) compared to controls (60 ng/ml).
- A trend suggested an association between YKL-40 and the urinary albumin/creatinine ratio (UACR).
- YKL-40 levels did not predict overall mortality, major cardiovascular events, or decompensation events.
Conclusions:
- Plasma YKL-40 levels are elevated in CHF patients.
- YKL-40 levels in CHF were not associated with clinical variables or predictive of adverse outcomes.
- Elevated YKL-40 in CHF may be attributed to comorbidities, though a role in low-grade inflammation is not ruled out.
Objectives:
Congestive heart failure (CHF) has been associated with elevated biomarker levels reflecting chronic low-grade inflammation. YKL-40 is a biomarker with increasing levels in patients with cardiovascular disease (CVD) of increasing severity. Furthermore, YKL-40 is associated with all-cause and cardiovascular mortality. We investigated plasma YKL-40 levels in patients with CHF and evaluated the possible predictive value with respect to overall mortality and recurrent cardiovascular outcomes.
Design:
Plasma YKL-40 was measured in 194 CHF patients and in 117 age-matched individuals without CVD.
Results:
Median YKL-40 levels were approximately 77% higher in patients with CHF (106 (IQR, 66-184) ng/ml vs. 60 (IQR, 42-97) ng/ml, p < 0.0001). We found a trend towards an association of YKL-40 levels with urinary albumin/creatinine ratio (UACR) (beta = 0.12, p = 0.08). YKL-40 levels were not predictive of overall mortality (p = 0.59), major cardiovascular events (p = 0.23) or events of incompensation (p = 0.56).
Conclusions:
Plasma YKL-40 levels are elevated in patients with CHF but show no association with other clinical or paraclinical variables. YKL-40 levels were not predictive of overall mortality or incident cardiovascular events. Most likely, elevated YKL-40 levels in CHF patients are explained by the presence of concomitant diseases but a role of YKL-40 in low-grade inflammation is not excluded.
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