Abstract:
:Urinary protein biomarkers and metabolomic markers have been leveraged to detect acute Drug Induced Kidney Injury (DIKI) in rats; however, the utility of these indicators to enable early detection of DIKI in canine models has not been well documented. Therefore, we evaluated temporal changes in biomarkers and metabolites in urine from male and female beagle dogs. Gentamicin- induced kidney lesions in male dogs were characterized by moderate to severe tubular epithelial cell degeneration/necrosis, epithelial cell regeneration and dilation; and a unique urinebased metabolomic fingerprint. These metabolite changes included time and treatment-dependent increases in lactate, taurine, glucose, lactate, alanine, and citrate as well as 9 other known metabolites. As early as 3 days post dose, gentamicin induced increases in urinary albumin, clusterin, neutrophil gelatinase associated protein (NGAL) and total protein concentrations. Urinary albumin, clusterin, and NGAL showed earlier and more robust elevations than traditional kidney safety biomarkers, blood urea nitrogen and serum creatinine. Elevations in urinary kidney injury molecule 1 (KIM-1) were less reliable for detection of gentamicin nephrotoxicity in dogs based on values generated utilizing multiple first-generation, canine-specific KIM-1 immunoassays. The metabolic fingerprint was further evaluated in male and female dogs that received Compound A which induced slightly reversible renal tubular alterations characterized as degeneration/necrosis and concurrent significant increases in urinary taurine amongst other markers. These data support further investigations to demonstrate the value of urinary metabolites, albumin, clusterin, NGAL and taurine as promising markers to enable early detection of DIKI in dogs.
journal_name
Curr Top Med Chemjournal_title
Current topics in medicinal chemistryauthors
Wagoner MP,Yang Y,McDuffie JE,Klapczynski M,Buck W,Cheatham L,Eisinger D,Sace F,Lynch KM,Sonee M,Ma JY,Chen Y,Marshall K,Damour M,Stephen L,Dragan YP,Fikes J,Snook S,Kinter LBdoi
10.2174/1568026617666170713172331subject
Has Abstractpub_date
2017-01-01 00:00:00pages
2767-2780issue
24eissn
1568-0266issn
1873-4294pii
CTMC-EPUB-84770journal_volume
17pub_type
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