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American Association for the Advancement of Science, Science Translational Medicine, 175(5), 2013

DOI: 10.1126/scitranslmed.3005218

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Carbamylation of Serum Albumin as a Risk Factor for Mortality in Patients with Kidney Failure

Journal article published in 2013 by Anders H. Berg, Christiane Drechsler, Julia Wenger, Roberto Buccafusca, Tammy Hod, Sahir Kalim, Wenda Ramma, Samir M. Parikh, Hanno Steen, David J. Friedman, John Danziger, Christoph Wanner, Ravi Thadhani, S. Ananth Karumanchi
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This paper is available in a repository.

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Abstract

Urea, the toxic end-product of protein catabolism, is elevated in end-stage renal disease (ESRD), although it is unclear whether or how it contributes to disease. Urea can promote the carbamylation of proteins on multiple lysine side chains, including human albumin, which has a predominant carbamylation site on lysine 549. The proportion of serum albumin carbamylated on Lys-549 (%C-Alb) correlated with time-averaged blood urea concentrations and was twice as high in ESRD patients than in non-uremic subjects (0.90% vs. 0.42%, P