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Matrix metalloproteinases and airway remodeling and function in primary ciliary dyskinesia

Massimo Pifferi1, Andrew Bush2, Davide Caramella3

  • 1Department of Paediatrics, University Hospital of Pisa, Italy.

Respiratory Medicine
|March 13, 2017
PubMed
Abstract

Insights

Increased matrix metalloproteinases (MMPs) correlate with worse airway damage in primary ciliary dyskinesia (PCD) and secondary ciliary dyskinesia (SCD). These MMPs represent potential therapeutic targets for these conditions.

Area of Science:

  • Pulmonary Medicine
  • Biochemistry
  • Genetics

Background:

  • The balance between matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) is crucial for regulating airway damage.
  • Dysregulation of MMPs and TIMPs may contribute to the pathophysiology of ciliary dyskinesia.

Purpose of the Study:

  • To investigate the role of MMPs and TIMPs in the pathophysiology of primary ciliary dyskinesia (PCD) and secondary ciliary dyskinesia (SCD).

Main Methods:

  • A cross-sectional study measured sputum bacteriology, lung CT, MMPs, TIMPs, and lung function in 86 patients (51 PCD, 35 SCD) and 10 controls.
  • Longitudinal evaluation of MMPs, TIMPs, and lung function was performed in 38 PCD patients for up to one year.

Main Results:

  • MMP and TIMP levels were lower in controls compared to PCD and SCD patients at baseline.
  • Increased MMP levels, particularly MMP-9/TIMP-1, were associated with poorer lung function and more severe lung CT changes in PCD and SCD.
  • Longitudinal analysis revealed correlations between changes in spirometry and sputum MMPs in PCD patients.

Conclusions:

  • Elevated MMPs are linked to increased airway damage in both PCD and SCD.
  • MMPs emerge as potential therapeutic targets for managing airway damage in ciliary dyskinesia.
Keywords:
Airway remodelingChest HRCTLung functionMatrix metalloproteinasesPrimary ciliary dyskinesiaSecondary ciliary dyskinesia

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