Evaluation of Dose-Fractionated Polymyxin B on Acute Kidney Injury Using a Translational In Vivo Rat Model

Antimicrob Agents Chemother. 2020 Apr 21;64(5):e02300-19. doi: 10.1128/AAC.02300-19. Print 2020 Apr 21.

Abstract

We investigated dose-fractionated polymyxin B (PB) on acute kidney injury (AKI). PB at 12 mg of drug/kg of body weight per day (once, twice, and thrice daily) was administered in rats over 72 h. The thrice-daily group demonstrated the highest KIM-1 increase (P = 0.018) versus that of the controls (P = 0.99) and histopathological damage (P = 0.013). A three-compartment model best described the data (bias, 0.129 mg/liter; imprecision, 0.729 mg2/liter2; R2, 0.652,). Area under the concentration-time curve at 24 h (AUC24) values were similar (P = 0.87). The thrice-daily dosing scheme resulted in the most PB-associated AKI in a rat model.

Keywords: acute kidney injury; animal model; colistin; pharmacodynamic; pharmacokinetic; polymyxin B; polymyxins; toxicodynamic; urinary biomarker.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Kidney Injury / drug therapy*
  • Acute Kidney Injury / enzymology
  • Animals
  • Anti-Bacterial Agents / administration & dosage*
  • Anti-Bacterial Agents / pharmacokinetics
  • Anti-Bacterial Agents / therapeutic use*
  • Area Under Curve
  • Cell Adhesion Molecules / metabolism
  • Disease Models, Animal
  • Dose-Response Relationship, Drug
  • Kidney Function Tests
  • Male
  • Polymyxin B / administration & dosage*
  • Polymyxin B / pharmacokinetics
  • Polymyxin B / therapeutic use*
  • Rats
  • Rats, Sprague-Dawley
  • Translational Research, Biomedical

Substances

  • Anti-Bacterial Agents
  • Cell Adhesion Molecules
  • Havcr1protein, rat
  • Polymyxin B