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Staphylococcus aureus osteomyelitis: bad to the bone

Michael E Olson1, Alexander R Horswill

  • 1Department of Microbiology, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA.

Cell Host & Microbe
|June 18, 2013
PubMed

Insights

Staphylococcus aureus causes bone infections like osteomyelitis. Researchers used microCT imaging to find that the enzyme aureolysin is key in how this infection affects bone remodeling.

Area of Science:

  • Infectious Diseases
  • Microbiology
  • Skeletal Biology

Background:

  • Osteomyelitis is a severe bone infection frequently caused by Staphylococcus aureus.
  • Understanding the mechanisms of bone destruction and remodeling during infection is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the role of Staphylococcus aureus virulence factors in modulating bone remodeling during osteomyelitis.
  • To develop and apply advanced imaging techniques for visualizing bone changes in vivo.

Main Methods:

  • Development of a high-resolution microcomputed tomography (microCT) method.
  • In vivo imaging of bone remodeling dynamics during Staphylococcus aureus infection in a model system.

Main Results:

  • The study visualized dynamic bone remodeling processes during Staphylococcus aureus infection using microCT.
  • The metalloprotease aureolysin was identified as a critical factor influencing osteomyelitis pathogenesis.
  • Aureolysin's role in modulating the host's bone response to infection was elucidated.

Conclusions:

  • High-resolution microCT is a valuable tool for studying bone infections.
  • The bacterial enzyme aureolysin significantly impacts the progression of osteomyelitis by affecting bone remodeling.
  • Targeting aureolysin may represent a novel therapeutic strategy for treating Staphylococcus aureus osteomyelitis.

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