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Erschienen in:
01.08.2015 | Original article
Galectin-3 as a new biomarker of diastolic dysfunction in hemodialysis patients
Erschienen in: Herz | Ausgabe 5/2015
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Background
Galectin-3 (gal-3) is an emerging prognostic biomarker in heart failure (HF). Clinical and experimental studies suggest that gal-3 is an important mediator of HF. Here we aimed to examine the relationship between gal-3 and diastolic dysfunction in patients undergoing maintenance hemodialysis (HD).
Methods
We examined the relationship between plasma gal-3 levels and left ventricular diastolic function. Plasma gal-3 was measured in 87 subjects with chronic HD and in 45 healthy controls using biochemical evaluations. Conventional echocardiography and pulsed tissue Doppler assessment were performed in all patients. Left ventricular diastolic dysfunction (LVDD) was defined as E’ < 8 cm/s. The E/E’ ratio was used as the main determinant of LVDD grade.
Results
The mean gal-3 concentrations were: 16.05 ng/ml (13.89–19.75) in healthy controls; 14.54 ng/ml (10.85–17.65) in HD patients with normal diastolic function; and 23.30 ng/ml (20.12–26.87) in HD patients with LVDD (p < 0.01). Plasma gal-3 levels correlated with E/E’ (r = 0.933, p < 0.01), left atrial volume index (r = 0.713, p < 0.01), and E’ (r = -0.685, p < 0.01). ROC analysis showed that the best gal-3 cut-off point for the diagnosis of LVDD was 20.12 ng/ml with a sensitivity of 67.6 % and specificity of 84.6 % (AUC = 0.803).
Conclusion
We suggest that gal-3 may be a promising biomarker for the detection of LVDD in HD patients.