Kidney injury molecule-1 outperforms traditional biomarkers of kidney injury in preclinical biomarker qualification studies
Vishal S Vaidya, Josef S Ozer, Frank Dieterle, Fitz B Collings, Victoria Ramirez, Sean Troth, Nagaraja Muniappa, Douglas Thudium, David Gerhold, Daniel J Holder, Norma A Bobadilla, Estelle Marrer, Elias Perentes, André Cordier, Jacky Vonderscher, Gérard Maurer, Peter L Goering, Frank D Sistare, Joseph V Bonventre, Vishal S Vaidya, Josef S Ozer, Frank Dieterle, Fitz B Collings, Victoria Ramirez, Sean Troth, Nagaraja Muniappa, Douglas Thudium, David Gerhold, Daniel J Holder, Norma A Bobadilla, Estelle Marrer, Elias Perentes, André Cordier, Jacky Vonderscher, Gérard Maurer, Peter L Goering, Frank D Sistare, Joseph V Bonventre
Abstract
Kidney toxicity accounts both for the failure of many drug candidates as well as considerable patient morbidity. Whereas histopathology remains the gold standard for nephrotoxicity in animal systems, serum creatinine (SCr) and blood urea nitrogen (BUN) are the primary options for monitoring kidney dysfunction in humans. The transmembrane tubular protein kidney injury molecule-1 (Kim-1) was previously reported to be markedly induced in response to renal injury. Owing to the poor sensitivity and specificity of SCr and BUN, we used rat toxicology studies to compare the diagnostic performance of urinary Kim-1 to BUN, SCr and urinary N-acetyl-beta-D-glucosaminidase (NAG) as predictors of kidney tubular damage scored by histopathology. Kim-1 outperforms SCr, BUN and urinary NAG in multiple rat models of kidney injury. Urinary Kim-1 measurements may facilitate sensitive, specific and accurate prediction of human nephrotoxicity in preclinical drug screens. This should enable early identification and elimination of compounds that are potentially nephrotoxic.
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References
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Source: PubMed