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Mediators of Inflammation
Volume 2014, Article ID 798060, 6 pages
http://dx.doi.org/10.1155/2014/798060
Research Article

Patients with Ankylosing Spondylitis and Low Disease Activity because of Anti-TNF-Alpha Therapy Have Higher TRAIL Levels Than Controls: A Potential Compensatory Effect

1Epidemiology, Genetics and Atherosclerosis Research Group on Systemic Inflammatory Diseases, Rheumatology Division, IDIVAL, 39011 Santander, Spain
2Rheumatology Division, Hospital Lucus Augusti, 27003 Lugo, Spain
3Oncology Division, Hospital Del Bierzo, Ponferrada, 24411 León, Spain
4Rheumatology Division, Hospital General de Almansa, 02640 Albacete, Spain
5Department of Epidemiology and Computational Biology, School of Medicine, University of Cantabria, IDIVAL, and CIBER Epidemiología y Salud Pública (CIBERESP), 39011 Santander, Spain
6Cardiology Division, Hospital Lucus Augusti, 27003 Lugo, Spain

Received 9 April 2014; Accepted 9 May 2014; Published 21 May 2014

Academic Editor: Vinod K. Mishra

Copyright © 2014 Fernanda Genre et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. TRAIL is a potential biomarker of cardiovascular (CV) disease. Ankylosing spondylitis (AS) is a chronic inflammatory disease associated with metabolic syndrome (MeS) and accelerated atherosclerosis. We assessed whether disease activity, systemic inflammation, and MeS features were associated with circulating TRAIL levels in AS patients undergoing TNF-α antagonist infliximab therapy and if infliximab infusion modified TRAIL levels. Methods. We measured TRAIL serum levels in 30 nondiabetic AS patients without CV disease undergoing anti-TNF-α therapy, immediately before and after an infliximab infusion, and in 48 matched controls. Correlations of TRAIL levels with disease activity, systemic inflammation and MeS features, adipokines, and biomarkers of endothelial activation were evaluated. Changes in TRAIL levels following anti-TNF-α infusion were analyzed. Results. TRAIL levels were higher in AS patients than controls. TRAIL levels displayed an inverse correlation with total and LDL cholesterol. We observed an inverse correlation with QUICKI and a marginal association with HOMA-IR. We also found an inverse correlation with resistin and a marginal association with apelin and OPN. Anti-TNF-α infusion did not change TRAIL levels after 120′. Conclusion. Elevated TRAIL levels in AS patients may be the result of a compensatory mechanism to reduce CV risk in these patients.