Neutrophil Gelatinase-Associated Lipocalin (NGAL) in Chronic Cardiorenal Failure is Correlated with Endogenous Erythropoietin Levels and Decreases in Response to Low-Dose Erythropoietin Treatment
2012
Background: Neutrophil-gelatinase associated lipocalin (NGAL), a tubular injury marker, is associated with iron metabolism in hemodialysis patients. We investigated whether serum NGAL levels reflect iron metabolism in combined chronic heart failure and chronic kidney disease (CHF/CKD) and whether treatment with low-dose erythropoietin stimulating agent (ESA) modulates NGAL levels. Methods: In the EPOCARES trial (ClinTrialsNCT00356733) serum NGAL, hepcidin-25, transferrin saturation (TSAT), reticulocyte hemoglobin content (Ret-He) and endogenous erythropoietin (EPO) levels were measured. Results: Baseline serum NGAL levels correlated with cystatin C (r=0.767, p<0.001) and baseline EPO levels (r=-0.395, p=0.003). There was no correlation with baseline TSAT, Ret-He, and hepcidin-25 levels. After two weeks, NGAL levels decreased in the ESA-group (p=0.02), while there was no change in the no-ESA group (p=0.62). The magnitude in NGAL decrease in the ESA-group correlated with baseline
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