alexa Potential New Markers of Inflammation-Induced Renal Injury Subside when Endotoxin Tolerance Develops in Humans | OMICS International | Abstract
ISSN: 0974-276X

Journal of Proteomics & Bioinformatics
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Research Article

Potential New Markers of Inflammation-Induced Renal Injury Subside when Endotoxin Tolerance Develops in Humans

Rosalinde Masereeuw2*, Annelies Draisma1, Suzanne Heemskerk2, Martijn PWJM Bouw1, Coby Laarakkers3, Johannes G van der Hoeven1 and Peter Pickkers1

1Department of Intensive Care Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands

2Department of Pharmacology and Toxicology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands

3Department of Laboratory Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands

*Corresponding Author:
Rosalinde Masereeuw
Department of Pharmacology and Toxicology (149)
Radboud University Nijmegen Medical Centre
PO box 9101, 6500 HB
Nijmegen, the Netherlands
Tel: +31-24-3613730
Fax: +31-24-3614214
E-mail: [email protected]

Received Date: January 24, 2013; Accepted Date: March 11, 2013; Published Date: March 13, 2013

Citation: Masereeuw R, Draisma A, Heemskerk S, Bouw MP, Laarakkers C, et al. (2013) Potential New Markers of Inflammation-Induced Renal Injury Subside when Endotoxin Tolerance Develops in Humans. J Proteomics Bioinform 6:058-064. doi: jpb.1000262

Copyright: © 2013 Masereeuw R, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Purpose: Cytokines play an important role in the development of renal injury during sepsis. Because of its high mortality rate, early detection of inflammation-induced renal injury is of critical importance.

Methods: We used Surface enhanced Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (SELDI- -TOF MS), to search for new biomarkers for early renal injury during acute systemic inflammation, and after development of endotoxin tolerance in humans in vivo.

Results: Repeated LPS administrations induced a 33 ± 7% decrease in glomerular filtration rate (p=0.02) on day 2, and an increase in serum creatinine of 11 ± 3% (p=0.002) on day 3, which was associated with the appearance of 15 peak intensities in the urinary protein profile, including an increase in ß2-microglobuline levels (p=0.04), 6 hours after the first LPS administration. Four of the 15 peak intensities on day 1 correlated with serum creatinine levels on day 3; 3950, 4445, 6723 and 7735 m/z (r=0.91, 0.97, 0.94, 0.87; p=0.03; 0.01; 0.02 and 0.05, respectively). With the development of LPS tolerance, renal function restored, reflected by a decrease in serum creatinine and ß2-microglobuline to baseline levels (p=0.2 and 0.4, respectively, between day 1 and 5), and by attenuated peak intensities in the urinary protein profile (p<0.0001 for all 15 peak intensities).

Conclusion: Renal injury occurs during repeated endotoxemia and can be predicted by new urinary markers using proteome research. The four markers that correlated with the extent of renal injury may represent potential new biomarkers for renal injury and need further identification. The inflammation-induced renal injury subsided, when LPS tolerance developed after 5 consecutive days of LPS.


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