alexa Comparative Serum Proteomic Analysis of Differentially Regulated Proteins in Patients with Rheumatoid Arthritis and Healthy Volunteers
ISSN: 2167-7921

Journal of Arthritis
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Research Article

Comparative Serum Proteomic Analysis of Differentially Regulated Proteins in Patients with Rheumatoid Arthritis and Healthy Volunteers

Radovan Vasko1*, Sabine Blaschke2, Jan-Hendrik Streich1, Gerhard A Müller1, Peter Korsten1 and Hassan Dihazi1

1Department of Nephrology and Rheumatology, University Medical Center Goettingen, 37075 Goettingen, Germany

2Interdisciplinary Emergency Care Unit, University Medical Center Goettingen, 37075 Goettingen, Germany

*Corresponding Author:
Radovan Vasko
Department of Nephrology and Rheumatology
University Medical Center Goettingen
Robert-Koch-Str. 40, 37075 Göttingen, Germany
Tel: 49-551-39-9825
E-mail: [email protected]

Received date: May 12, 2016; Accepted date: June 07, 2016; Published date: June 11, 2016

Citation: Vasko R, Blaschke S, Streich JH, Müller GA, Korsten P, et al. (2016) Comparative Serum Proteomic Analysis of Differentially Regulated Proteins in Patients with Rheumatoid Arthritis and Healthy Volunteers. J Arthritis 5:201. doi:10.4172/2167-7921.1000201

Copyright: © 2016 Vasko 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.



Background: To identify differentially regulated serum proteins, we compared proteome profiles of sera from patients with rheumatoid arthritis (RA) and healthy controls using proteomics. Methods: Sera were collected from 43 patients with RA and 48 healthy volunteers. The samples were cleared of the most abundant major proteins by immunoaffinity chromatography. Serum protein profiles between the two groups were compared by two-dimensional differential gel electrophoresis (2D-DIGE) and differentially regulated proteins were studied using mass spectrometry. Results: We identified 26 differentially expressed serum proteins between patients with RA and healthy controls. A quantitatively significant change of protein levels was defined as at least 1.5-fold upregulation or 0.6-fold downregulation respectively. Using these criteria, patients with RA exhibited significantly higher levels of leucine-rich alpha-2-glycoprotein (p<0.01), apolipoprotein A-IV (p<0.001), clusterin (p<0.001), haptoglobin (p<0.001), Ig alpha-1 chain C region (p<0.05), retinol-binding protein 4 (p<0.001), serum amyloid A (p<0.01) and alpha-1-antichymotrypsin (p<0.01). The levels of serotransferrin were significantly decreased in RA patients (p<0.01). Conclusion: We identified eight proteins with significantly increased and one protein with significantly decreased serum levels in RA patients compared to healthy controls. Several of these proteins may be implicated in the pathogenesis of RA and may have potential in diagnostics and activity assessment of RA.


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