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Interaction between Acanthamoeba and Staphylococcus.

Şevval M Özcan Aykol1, Zuhal Zeybek2

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|February 28, 2024
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Summary
This summary is machine-generated.

Acanthamoeba amoebae produce antibacterial substances that inhibit Staphylococcus bacteria. This research suggests Acanthamoeba may offer a natural source for new antimicrobial agents against Staphylococcus infections.

Keywords:
Acanthamoebaameba–bacteria interactionantistaphylococcal effectcell‐free supernatantcolony counting method

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Area of Science:

  • Microbiology
  • Parasitology
  • Drug Discovery

Background:

  • Free-living amoebae, such as Acanthamoeba, commonly interact with bacteria in natural environments.
  • While bacteria can protect themselves within amoebae, the potential for amoebae to exert antibacterial effects remains less explored.

Purpose of the Study:

  • To investigate the antibacterial effects of Acanthamoeba strains against various Staphylococcus species.
  • To assess the potential of Acanthamoeba as a source for novel antimicrobial agents.

Main Methods:

  • Utilized three environmental Acanthamoeba strains and a standard strain (Acanthamoeba castellanii ATCC 50373).
  • Assessed the antistaphylococcal activity of cell-free supernatants (CFS) using the colony counting method against 12 Staphylococcus strains.
  • Determined Acanthamoeba pathogenicity via osmotolerance and thermotolerance tests.

Main Results:

  • Acanthamoeba CFS exhibited variable antistaphylococcal effects (0%-100%) against different Staphylococcus strains.
  • The standard Acanthamoeba strain's CFS achieved 100% inhibition against a methicillin-resistant Staphylococcus aureus strain (M2).
  • The Ugöl Acanthamoeba strain's CFS demonstrated 99.97% inhibition against a methicillin-sensitive Staphylococcus epidermidis strain (L3).
  • All tested Acanthamoeba isolates showed no pathogenic potential.

Conclusions:

  • Acanthamoeba possesses antibacterial properties effective against Staphylococcus bacteria.
  • The ameba-bacteria relationship can be detrimental to bacteria, challenging the notion of amoebae solely as protective hosts.
  • Acanthamoeba-derived substances represent a promising avenue for developing natural antimicrobial agents against Staphylococcus infections.