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Published in: Clinical Rheumatology 2/2011

01-02-2011 | Original Article

Anti-ribonucleoproteins autoantibodies in patients with systemic autoimmune diseases. Relation with cutaneous photosensitivity

Authors: Mariela L. Paz, Daniel H. González Maglio, María Pino, Alejandro Ferrari, Federico S. Weill, Gustavo Nasswetter, Juliana Leoni

Published in: Clinical Rheumatology | Issue 2/2011

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Abstract

A common feature between patients with a certain group of systemic autoimmune pathologies (SAPs) with rheumatic component, such as lupus erythematosus (LE) in all its forms, is the presence of cutaneous photosensitivity (CP) as well as the existence of autoantibodies (Aabs). These Aabs have also high incidence in other SAPs that do not present CP, like primary Sjögren's syndrome and rheumatoid arthritis. Cutaneous photosensitivity is a condition that consists of an exacerbated skin reaction to solar radiations; its incidence can reach 90% in systemic LE. The mechanisms involved in the development of CP have been extensively studied focusing on different approaches; however, the exact mechanism has not been fully elucidated yet. There are many theories that relate specifically the presence of circulating anti-Ro/SS-A Aabs with the CP phenomenon, though there are several studies which are in disagreement. In this study, we evaluated the Aabs profile (anti-Ro/SS-A 52 kDa, anti-Ro/SS-A 60 kDa, anti-La/SS-B, anti-Sm and ANAs) as well as their titer or reactivity, in a local cohort of 169 patients with SAPs. We related those Aabs profiles and titers with the presence or absence of CP, and we found that there was no significant association between the presence of anti-Ro/SS-A Aabs and the occurrence of CP. On the other hand, a statistically significant positive association was found between CP and high reactivity anti-Sm Aabs, though this fact could be biased by the incidence of both events in SLE patients. To sum up, in the particular population studied, there is no direct relationship between anti-Ro/SS-A Aabs and CP, which is in agreement with some authors and in disagreement with many others, contributing to the endless discussion of this issue.
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Metadata
Title
Anti-ribonucleoproteins autoantibodies in patients with systemic autoimmune diseases. Relation with cutaneous photosensitivity
Authors
Mariela L. Paz
Daniel H. González Maglio
María Pino
Alejandro Ferrari
Federico S. Weill
Gustavo Nasswetter
Juliana Leoni
Publication date
01-02-2011
Publisher
Springer-Verlag
Published in
Clinical Rheumatology / Issue 2/2011
Print ISSN: 0770-3198
Electronic ISSN: 1434-9949
DOI
https://doi.org/10.1007/s10067-010-1481-8

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