Pro-inflammatory S100A11 is elevated in inflammatory myopathies and reflects disease activity and extramuscular manifestations in myositis.

Abstract

BACKGROUND:

S100A11 (calgizzarin), a member of the S100 family, is associated with oncogenesis, inflammation and myocardial damage. Our aim was to analyse S100A11 in idiopathic inflammatory myopathies (IIMs) and its association with disease activity features and cancer development.

METHODS:

S100A11 in muscle was determined by immunohistochemistry in polymyositis (PM), dermatomyositis (DM), myasthenia gravis (MG) and in subjects without autoimmune inflammatory disease (HC). S100A11 in plasma was measured in 110 patients with IIMs (PM, DM, and cancer associated myositis (CAM) patients) and in 42 HC. Disease activity was assessed by myositis disease activity assessment (MYOACT), muscle enzymes and C-reactive protein (CRP) were measured by routine laboratory techniques; autoantibodies by immunoprecipitation or by immunoblot.

RESULTS:

We observed an accumulation of S100A11 in the cytoplasm of regenerating and necrotizing muscle fibres of PM and DM patients. S100A11 was increased in plasma of all myositis patients compared to HC (3.8 (1.5-16.8) vs 2.8 (1.7-11.2) ng/ml, p = 0.011) and in DM and CAM patients compared to HC (4.0 (2.2-14.9) and 4.5 (1.5-9.1) vs 2.8 (1.7-11.2) ng/ml, p < 0.001 and p = 0.022, respectively). In all myositis patients, S100A11 correlated with the levels of lactate dehydrogenase (r = 0.256, p = 0.011), aspartate aminotransferase (AST) (r = 0.312, p = 0.002), CRP (r = 0.254, p = 0.022) and MYOACT (r = 0.245, p = 0.022). S100A11 was associated with MYOACT (r = 0.377, p = 0.030) and pulmonary and cutaneous disease activity in DM patients (r = 0.408, p = 0.017 and r = 0.417, p = 0.01, respectively). S100A11 was related to the levels of AST (r = 0.412, p = 0.027) in PM and to the levels of creatine phosphokinase (r = 0.432, p = 0.028) in CAM patients.

CONCLUSIONS:

We show for a first time a potential implication of S100A11 in the local inflammatory and tissue remodelling processes in myositis and an association of circulating S100A11 with disease activity and extra muscular manifestations in DM.

• Authors: Lucie Andrés Cerezo, Hana Hulejová, Barbora Šumová, Tereza Kropáčková, Olga Kryštůfková, Martin Klein, Heřman F Mann, Josef Zámečník, Ondřej Pecha, Karel Pavelka, Jiří Vencovský, Ladislav Šenolt
• Journal: Cytokine (Cytokine) Vol. 116 Pg. 13-20 (04 2019) ISSN: 1096-0023 [Electronic] England
• PMID: 30684913 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2019 Elsevier Ltd. All rights reserved.

Chemical References

• Autoantibodies
• S100 Proteins
• S100A11 protein, human
• C-Reactive Protein

Topics

• Adult
• Aged
• Aged, 80 and over
• Autoantibodies (immunology)
• Autoimmune Diseases (immunology, pathology)
• C-Reactive Protein (analysis)
• Female
• Humans
• Male
• Middle Aged
• Muscle Fibers, Skeletal (pathology)
• Polymyositis (immunology, pathology)
• S100 Proteins (metabolism)