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The pathogenesis of pulmonary fibrosis: a moving target

Wim A Wuyts1, Carlo Agostini, Katerina M Antoniou

  • 1Laboratory of Pneumology, Dept of Respiratory Medicine, Katholieke Universiteit Leuven, Leuven, Belgium. wim.wuyts@uzleuven.be

The European Respiratory Journal
|October 27, 2012
PubMed

Insights

Pulmonary fibrosis, a fatal lung disease, involves excessive matrix buildup. This review explores initiating factors and pathways, aiming to guide research toward effective combination antifibrotic therapies.

Area of Science:

  • Pulmonary medicine
  • Pathology
  • Cell biology

Background:

  • Pulmonary fibrosis represents the end-stage of various diffuse parenchymal lung diseases.
  • It is characterized by aberrant matrix deposition, leading to irreversible lung architecture destruction and mortality.
  • Despite advances, the primary pathogenic pathways remain incompletely understood.

Purpose of the Study:

  • To review current knowledge on pulmonary fibrosis pathogenesis.
  • To discuss initiating factors, including viral infections and gastro-oesophageal reflux.
  • To explore ancillary pathways such as immune responses, stress pathways, coagulation, and stem cell involvement.

Main Methods:

  • This is a review article, synthesizing existing scientific literature.
  • It integrates clinical observations with mechanistic insights.
  • Focuses on identifying key pathways in fibrogenesis.

Main Results:

  • Susceptibility and injurious agents are proposed as initiating factors.
  • Immune mechanisms, oxidative stress, endoplasmic reticulum stress, coagulation, and stem cells are discussed as ancillary pathways.
  • An integrated view of fibrogenesis is presented.

Conclusions:

  • Understanding the complex interplay of initiating and ancillary pathways is crucial for advancing pulmonary fibrosis research.
  • Developing effective antifibrotic strategies will likely require targeting multiple key pathways simultaneously.
  • A comprehensive "big picture" overview is essential for guiding future therapeutic development.
Keywords:
Coagulationfibrosisimmunologypathogenesispulmonary fibrosis

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