• J. Card. Fail. · Sep 2013

    Novel urinary biomarkers in detecting acute kidney injury, persistent renal impairment, and all-cause mortality following decongestive therapy in acute decompensated heart failure.

    • Frederik H Verbrugge, Matthias Dupont, Zhili Shao, Kevin Shrestha, Dhssraj Singh, Michael Finucan, Wilfried Mullens, and W H Wilson Tang.
    • Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium; Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.
    • J. Card. Fail. 2013 Sep 1;19(9):621-8.

    BackgroundNew urinary biomarkers, such as neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), and interleukin-18 (IL-18), are proposed to allow a more reliable early diagnosis and prognosis of acute kidney injury (AKI) in acute decompensated heart failure (ADHF). Our aim was to compare the predictive value of urinary NGAL, KIM-1, and IL-18 for the occurrence of AKI, persistent renal impairment, and mortality in ADHF.Methods And ResultsEighty-three patients admitted for ADHF were analyzed. Urinary creatinine (Cr), NGAL, KIM-1, and IL-18 were measured at baseline. Serum Cr was measured daily during the next 4 days and again at outpatient follow-up after 6 months. Mortality data were prospectively collected. Urinary NGAL, KIM-1, and IL-18 were modestly correlated with each other (Spearman ρ ≤0.61) and poorly correlated with estimated glomerular filtration rate (eGFR; Spearman ρ ≤0.28). None predicted AKI, defined as a 25% decrease in eGFR, during the index hospitalization, but urinary IL-18/Cr was the strongest predictor of persistently elevated serum Cr ≥0.3 mg/dL after 6 months compared with baseline (area under the receiver operating characteristic curve 0.674; P = .013). Urinary IL-18 was also significantly associated with all-cause mortality (hazard ratio 1.48, 95% confidence interval 1.16-1.87; P = .001).ConclusionsLike urinary NGAL, urinary KIM-1 and IL-18 are relatively modest predictors of AKI in ADHF. Among these novel renal biomarkers examined, further investigations regarding the prognostic value of urinary IL-18 are warranted.Copyright © 2013 Elsevier Inc. All rights reserved.

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