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Published in: Respiratory Research 1/2018

Open Access 01-12-2018 | Research

A Serological Biomarker of Versican Degradation is Associated with Mortality Following Acute Exacerbations of Idiopathic Interstitial Pneumonia

Authors: Jannie M. B. Sand, Yoshinori Tanino, Morten A. Karsdal, Takefumi Nikaido, Kenichi Misa, Yuki Sato, Ryuichi Togawa, Xintao Wang, Diana J. Leeming, Mitsuru Munakata

Published in: Respiratory Research | Issue 1/2018

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Abstract

Background

Idiopathic interstitial pneumonia (IIP) is characterized by an increased rate of extracellular matrix (ECM) remodeling resulting in fibrosis. Acute exacerbations of IIP represent periods of increased disease activity, thus we hypothesized that ECM remodeling was altered during acute exacerbations and investigated this by serological neo-epitope biomarkers.

Methods

Patients who were sequentially admitted to the hospital with acute exacerbations of IIP were retrospectively analyzed for ECM remodeling at time of exacerbation (AE-IIP) and at clinical stability (S-IIP). Biomarkers released by matrix metalloproteinase-mediated degradation of collagen type I (C1M), III (C3M), IV (C4M), and VI (C6M), elastin (ELM7), versican (VCANM), biglycan (BGM), and C-reactive protein (CRPM) were assessed in serum by competitive ELISAs utilizing neo-epitope specific monoclonal antibodies.

Results

Sixty-eight patients at AE-IIP and 29 at S-IIP were included in this retrospective analysis. Of these, 28 and 11 patients, respectively, had idiopathic pulmonary fibrosis. At AE-IIP, serum levels of C4M (p = 0.002) and C6M (p = 0.024) were increased as compared with S-IIP, while ELM7 (p = 0.024) and VCANM (p < 0.0001) were decreased. Lower VCANM levels at AE-IIP were associated with increased risk of mortality (HR 0.64 [95% CI 0.43–0.94], p = 0.022).

Conclusions

The ECM remodeling profile was significantly altered during acute exacerbations of IIP, and a biomarker of versican degradation was related to mortality outcome. These results indicate that biomarkers of ECM remodeling may be useful in the non-invasive evaluation of acute exacerbations of IIP. Especially versican degradation, as measured serologically by VCANM, may have prognostic potential and help guide treatment for acute exacerbations.
Literature
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Metadata
Title
A Serological Biomarker of Versican Degradation is Associated with Mortality Following Acute Exacerbations of Idiopathic Interstitial Pneumonia
Authors
Jannie M. B. Sand
Yoshinori Tanino
Morten A. Karsdal
Takefumi Nikaido
Kenichi Misa
Yuki Sato
Ryuichi Togawa
Xintao Wang
Diana J. Leeming
Mitsuru Munakata
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Respiratory Research / Issue 1/2018
Electronic ISSN: 1465-993X
DOI
https://doi.org/10.1186/s12931-018-0779-y

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