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Related Experiment Videos

Bronchopneumonia caused by Propionibacterium acnes

G Claeys1, G Verschraegen, C De Potter

  • 1Department of Bacteriology, University Hospital, Ghent, Belgium.

European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology
|September 1, 1994
PubMed
Summary

Propionibacterium acnes caused a rare subacute lung infection in a patient with chronic lung disease. This case highlights a new pulmonary pathogen, Propionibacterium acnes, in interstitial fibrosis.

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Area of Science:

  • Pulmonary Medicine
  • Infectious Diseases
  • Microbiology

Background:

  • Subacute lung infections can be challenging to diagnose.
  • Chronic lung disease exacerbations may present with diverse etiologies.
  • Identifying causative pathogens is crucial for effective treatment.

Observation:

  • A 65-year-old male with chronic lung disease exacerbation presented with subacute respiratory symptoms.
  • Open lung biopsy revealed interstitial fibrosis.
  • Gram stain showed numerous bacteria, later identified as Propionibacterium acnes.

Findings:

  • Propionibacterium acnes was isolated in pure culture from lung tissue.
  • Macrophages within the biopsy stained positive for Propionibacterium acnes antigen.

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  • Histopathology confirmed active interstitial fibrosis associated with the bacterial presence.

    • Implications:

    • This is the first documented case of subacute pulmonary infection caused by Propionibacterium acnes.
    • The findings expand the spectrum of lung infections associated with this bacterium.
    • Further research is warranted to understand the pathogenesis and clinical significance of Propionibacterium acnes in lung disease.