Application of emerging biomarkers of acute kidney injury in development of kidney-sparing polypeptide-based antibiotics.

Burt D, Crowell SJ, Ackley DC, Magee TV, Aubrecht J.
Journal   Drug Chem Toxicol.
Species  
Analytes Measured   HAVCR1 KIM-1
Matrix Tested   Serum, urine
Year   2013
Volume  
Page Numbers  
Application   Toxicology
Abstract
Polypeptide antibiotics, such as polymyxins and aminoglycosides, are essential for treatment of life-threatening Gram-negative infections. Acute kidney injury (AKI) attributed to treatment with these agents severely limits their clinical application. Because standard biomarkers (serum creatinine [sCRE] and blood urea nitrogen [BUN]) feature limited sensitivity, the development of novel biomarkers of AKI is important. Here, we compared the performance of standard and emerging biomarkers of AKI for the detection of nephrotoxicity caused by polymyxin B across multiple species (rat, dog and monkey). Further, we applied a biomarker-driven strategy for selection of new kidney-sparing polymyxin analogs. Polymyxin B treatment produced dose-dependent kidney injury observed as proximal tubular degeneration/regeneration and necrosis across all species. Dogs and monkeys had similar biomarker profiles that included increases of both standard (sCRE and BUN) and emerging (urinary neutrophil gelatinase-associated Lipocalin [NGAL] and urinary kidney injury molecule 1 [KIM-1]) biomarkers of AKI. In contrast, only urinary NGAL and urinary KIM-1 were sufficiently capable of detecting kidney injury in rats. Because rats provide a feasible model for screening compounds in drug development, we utilized urinary NGAL as a sensitive biomarker of AKI to screen and rank order compounds in a 2-day toxicity study. To our knowledge, this study provides a first example of successfully applying biomarkers of AKI in drug development.

View Publications

Related Products

R-PLEX Rat HAVCR1/KIM-1 Antibody Set
HAVCR1/KIM-1 | Rat
R-PLEX Human HAVCR1/KIM-1 Antibody Set
HAVCR1/KIM-1 | Human
Kidney Injury Panel 3 Human Kit
α-GST, Calbindin, Clusterin, HAVCR1/KIM-1, Osteoactivin, TFF3, VEGF-A | Human
Multiplex
Human KIM-1 Kit
HAVCR1/KIM-1 | Human
Singleplex
Rat TIM-1/KIM-1/HAVCR Kit
HAVCR1/KIM-1 | Rat
Singleplex
Kidney Injury Panel 1 Rat Kit
Albumin, HAVCR1/KIM-1, NGAL/LCN2, Osteopontin | Rat
Multiplex
Browse Our Products

By Analytes
By Applications
Search
Customer Service/Orders


Scientific/Technical Support


Instrument Support


Company Headquarters