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Related Experiment Video

Updated: Feb 9, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
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Lung Interstitial Macrophages: Past, Present, and Future.

Joey Schyns1,2, Fabrice Bureau1,2,3, Thomas Marichal1,2,3

  • 1Laboratory of Cellular and Molecular Immunology, GIGA-Research, University of Liège, 4000 Liège, Belgium.

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|June 2, 2018
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Summary

Interstitial macrophages (IM) in the lungs are crucial for maintaining homeostasis and preventing allergic airway inflammation. This review details their characteristics, origins, and functions, highlighting future research directions.

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Area of Science:

  • Immunology
  • Cell Biology
  • Respiratory Medicine

Background:

  • Lung myeloid compartment research historically focused on alveolar macrophages.
  • Emerging evidence reveals diverse myeloid cells, including interstitial macrophages (IM).
  • IM are increasingly recognized for their roles beyond the airways.

Purpose of the Study:

  • To provide a historical perspective on lung interstitial macrophages (IM).
  • To review current knowledge on IM characteristics, ontogeny, and functions.
  • To identify future research challenges in the field of lung IM.

Main Methods:

  • Literature review of studies on lung interstitial macrophages (IM).
  • Focus on rodent models to understand IM characteristics and functions.
  • Historical analysis of research trends in lung myeloid compartment investigations.

Main Results:

  • Interstitial macrophages (IM) represent a distinct subset of lung myeloid cells.
  • IM play key roles in maintaining lung homeostasis.
  • IM are involved in preventing immune-mediated allergic airway inflammation.

Conclusions:

  • Lung interstitial macrophages (IM) are critical for lung immune defense and homeostasis.
  • Further research is needed to fully elucidate the ontogeny and diverse functions of IM.
  • Understanding IM is essential for developing new therapeutic strategies for lung diseases.