Increased circulating desmosine and age-dependent elastinolysis in idiopathic pulmonary fibrosis

Bart de Brouwer*, Marjolein Drent, Jody M. W. van den Ouweland, Petal A. Wijnen, Coline H. M. van Moorsel, Otto Bekers, Jan C. Grutters, Eric S. White, Rob Janssen

*Corresponding author for this work

Research output: Contribution to journalComment/Letter to the editorAcademicpeer-review

9 Citations (Web of Science)


Although chronic obstructive pulmonary disease (COPD) and idiopathic pulmonary fibrosis (IPF) seem to be opposite entities from a clinical perspective, common initial pathogenic steps have been suggested in both lung diseases. Emphysema is caused by an elastase/anti-elastase imbalance leading to accelerated elastin degradation. Elastinolysis is however, also accelerated in the IPF patients' lungs. The amino acids desmosine and isodesmosine (DES) are unique to elastin. During the degradation process, elastases liberate DES from elastin fibers. Blood DES levels consequently reflect the rate of systemic elastinolysis and are increased in COPD. This is the first report describing elevated DES levels in IPF patients. We also demonstrated that the age-related increment of DES concentrations is enhanced in IPF. Our current study suggests that elastinolysis is a shared pathogenic step in both COPD and IPF. Further investigation is required to establish the relevance of accelerated elastin degradation in IPF and to determine whether decelerating this process leads to slower progression of lung fibrosis and better survival for patients with IPF.
Original languageEnglish
Article number45
Number of pages4
JournalRespiratory Research
Publication statusPublished - 20 Mar 2018



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