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Related Experiment Video

Updated: May 10, 2025

Studying Microbial Communities In Vivo: A Model of Host-mediated Interaction Between Candida Albicans and Pseudomonas Aeruginosa in the Airways

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Published on: January 13, 2016

The lung microbiome in interstitial lung disease.

Sheridan G Mikhail¹, David N O'Dwyer^1,2

¹Division of Pulmonary and Critical Care Medicine, Dept. of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI, USA.

Breathe (Sheffield, England)

|April 21, 2025

Summary

The lung microbiome, particularly bacterial burden, is altered in idiopathic pulmonary fibrosis (IPF) and linked to mortality. Further research is needed to understand its role in other interstitial lung diseases (ILDs) and the oral-lung/gut-lung axes.

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Area of Science:

Pulmonary Medicine
Microbiology
Immunology

Background:

Interstitial lung disease (ILD) is a chronic lung condition with poorly understood pathogenesis.
Idiopathic pulmonary fibrosis (IPF), a common ILD, has a poor prognosis and involves dysregulated immune responses.
The lung microbiome is a key regulator of immunity and clinical outcomes in ILD.

Purpose of the Study:

To review studies on the lung microbiome's role in IPF pathogenesis.
To explore the potential influence of the oral and gut microbiomes on ILD.
To highlight the need for further research into the oral-lung and gut-lung axes in ILD.

Main Methods:

Literature review of observational lung microbiome studies in ILD patients.
Analysis of existing data on bacterial burden in IPF lungs.
Discussion of proposed mechanisms involving oral and gut microbiomes.

Main Results:

Elevated bacterial burden in the lungs of IPF patients is a consistent finding.
Increased lung bacterial burden in IPF predicts mortality.
Limited understanding exists regarding the lung microbiome's role in non-IPF ILDs.

Conclusions:

The lung microbiome plays a role in IPF pathogenesis, with increased bacterial load being a key factor.
The oral-lung and gut-lung axes are potential contributors to ILD pathogenesis.
More research is essential to elucidate the complex interactions within the lung microbiome and its impact on ILD progression.