Urinary Biomarkers of Aminoglycoside-Induced Nephrotoxicity in Cystic Fibrosis: Kidney Injury Molecule-1 and Neutrophil Gelatinase-Associated Lipocalin

Sci Rep. 2018 Mar 23;8(1):5094. doi: 10.1038/s41598-018-23466-4.

Abstract

Aminoglycosides are commonly used for the treatment of pulmonary exacerbations in patients with cystic fibrosis (CF). However, they are potentially nephrotoxic. This prospective observational cohort study aimed to investigate the potential validity of two urinary renal biomarkers, Kidney Injury Molecule-1 (KIM-1) and Neutrophil Gelatinase-associated Lipocalin (NGAL), in identifying aminoglycoside-induced nephrotoxicity in children with CF. Children and young adults up to 20 years of age with a confirmed diagnosis of CF were recruited from ten United Kingdom hospitals. Participants provided urine samples for measurement of KIM-1 and NGAL concentrations, at baseline, at regular outpatient appointments, and before, during and after exposure to clinically-indicated treatment with the aminoglycoside tobramycin. 37/158 patients recruited (23.4%) received at least one course of IV tobramycin during the study. The median peak fold-change during tobramycin exposure for KIM-1 was 2.28 (IQR 2.69) and 4.02 (IQR 7.29) for NGAL, in the absence of serum creatinine changes. Baseline KIM-1 was positively associated with cumulative courses of IV aminoglycosides (R2 = 0.11; β = 0.03; p < 0.0001). KIM-1, in particular, may be a useful, non-invasive, biomarker of acute and chronic proximal tubular injury associated with exposure to aminoglycosides in patients with CF, but its clinical utility needs to be further evaluated in prospective studies.

Publication types

  • Observational Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Kidney Injury / chemically induced*
  • Acute Kidney Injury / complications
  • Acute Kidney Injury / urine*
  • Aminoglycosides / adverse effects*
  • Anti-Bacterial Agents / adverse effects*
  • Biomarkers / urine
  • Child
  • Cystic Fibrosis / complications
  • Cystic Fibrosis / drug therapy*
  • Cystic Fibrosis / urine
  • Female
  • Hepatitis A Virus Cellular Receptor 1 / analysis*
  • Humans
  • Lipocalin-2 / urine*
  • Male
  • Prospective Studies
  • Tobramycin / adverse effects

Substances

  • Aminoglycosides
  • Anti-Bacterial Agents
  • Biomarkers
  • HAVCR1 protein, human
  • Hepatitis A Virus Cellular Receptor 1
  • LCN2 protein, human
  • Lipocalin-2
  • Tobramycin