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Related Experiment Video

Updated: May 31, 2025

Author Spotlight: Advancing Research on Candida albicans Biofilm-Associated Prosthetic Joint Infections
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Author Spotlight: Advancing Research on Candida albicans Biofilm-Associated Prosthetic Joint Infections

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Cold Plasma Activity Against Biofilm Formation of Prosthetic Joint Infection Pathogens.

Christopher Spiegel1, Débora C Coraça-Huber1, Michael Nogler2

  • 1Research Laboratory for Biofilms and Implant Associated Infections (BIOFILM LAB), Experimental Orthopaedics, University Hospital for Orthopaedics and Traumatology, Medical University of Innsbruck, Müllerstraße 44, 6020 Innsbruck, Austria.

Pathogens (Basel, Switzerland)
|January 25, 2025
PubMed
Summary

Cold atmospheric plasma (CAP) effectively reduces bacteria on medical implants. Air plasma at 1 cm for 5 seconds shows the best results for preventing periprosthetic joint infections.

Keywords:
biofilmcold atmospheric plasmaorthopedicsprosthetic joint infectionstaphylococci

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Area of Science:

  • Biomedical Engineering
  • Infectious Diseases
  • Plasma Physics

Background:

  • Periprosthetic joint infections (PJIs) affect 1-2% of patients post-surgery.
  • Conventional treatments like staged revisions have limited success in reducing PJIs.
  • Cold atmospheric plasma (CAP) shows potential for surface bacterial reduction.

Purpose of the Study:

  • To evaluate CAP's efficacy in reducing bacterial load on metal surfaces.
  • To investigate the impact of varying distances and plasma compositions (air vs. argon).
  • To ensure plasma application remains below temperatures harmful for in vivo use.

Main Methods:

  • Biofilm formation using *Staphylococcus aureus* and *Staphylococcus epidermidis* on TMZF discs.
  • CAP treatment with air and argon plasma at varied distances and durations.
  • Temperature monitoring during plasma application.
  • Colony-forming unit (CFU) counting to assess bacterial reduction.

Main Results:

  • Both air and argon plasma demonstrated effectiveness at a 1 cm distance.
  • Air plasma achieved higher CFU reduction but faced limitations due to oxygen-induced temperature increases.
  • Argon plasma did not exhibit temperature limitations related to exposure time.
  • Optimal conditions: 1 cm distance, 5s exposure with air plasma, effectively reducing bacteria without damaging tissue temperatures.

Conclusions:

  • CAP, particularly air plasma under specific conditions, is a viable option for reducing bacterial contamination on implants.
  • Argon plasma offers a temperature-stable alternative for CAP applications in surgical settings.
  • Further research into optimizing CAP parameters is warranted for clinical PJI prevention.