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Bone infection evolution.

Louise Kruse Jensen1, Katrine Top Hartmann1, Florian Witzmann2

  • 1Department of Veterinary and Animal Science, Faculty of Health and Medical Science, University of Copenhagen, Denmark.

Injury
|October 31, 2024
PubMed
Summary
This summary is machine-generated.

Bone infections may have existed for 400 million years, co-evolving with immune systems. Modern orthopedic surgery introduces new risks, creating distinct anthropogenic bone infections.

Keywords:
EvolutionFracture-related infectionOsteomyelitis

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Area of Science:

  • Evolutionary Biology
  • Microbiology
  • Orthopedic Surgery

Background:

  • Bone infections (osteomyelitis) have a long evolutionary history, potentially dating back 400 million years to the origin of osteocytes.
  • Bacterial bone infections evolved alongside the immune system and terrestrial bone structures, leading to sophisticated bacterial immune evasion strategies.
  • Bacteria can exhibit silent parasitism in bone tissue, with infections often recurring under conditions of immunosuppression across species.

Purpose of the Study:

  • To provide an evolutionary context for bone infection development from ancient origins to contemporary orthopedic practices.
  • To explore the co-evolution of bone infections, the immune system, and skeletal structures.
  • To differentiate between ancient bone infections and modern implant-related orthopedic infections.

Main Methods:

  • Phylogenetic analysis of osteomyelitis.
  • Review of evolutionary and immunological data related to bone infections.
  • Analysis of bacterial strategies for immune evasion and silent parasitism in bone.

Main Results:

  • Bacteria may have infected the skeleton for approximately 400 million years.
  • Co-evolution of bone infections and the immune system explains bacterial immune evasion.
  • Immunosuppression is a common factor in bone infection development across species.
  • Orthopedic procedures like arthroplasty create anthropogenic infections distinct from ancient forms.

Conclusions:

  • Bone infections have a deep evolutionary history intertwined with host defense mechanisms.
  • Modern orthopedic implants represent novel targets for bacterial invasion, leading to unique infection dynamics.
  • Understanding the evolutionary trajectory of bone infections is crucial for addressing contemporary challenges in orthopedic surgery.