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Published on: June 24, 2018
[Formation of biofilms by agents of surgical soft tissue infections]
Aim:
To determine the ability of agents of surgical soft tissue infections to form biofilms.
Materials And Methods:
Material for the study was strains of microorganisms causing surgical soft tissue infection (phlegmon): 38 strains of Staphylococcus aureus, 16 strains of coagulase-negative staphylococci, 20 strains of enterococci, and 10 strains of pseudomonades. Ability of microorganisms to form biofilms was determined by photometric method. Microscopic evaluation included study of pathologic material from wounds as well as biofilms obtained in vitro.
Results:
All strains of pseudomonades and 80% of enterobacteria strains had marked ability to form biofilms. This characteristic was less prevalent and expressed in staphylococci. Direct relation between ability of microorganism to form biofilm and duration of illness (correlation coefficient - 0.68) was revealed. Biofilms in wounds were detected only 3 or more days after surgery.
Conclusion:
Agents of surgical soft tissue infections are able to form biofilms. This ability of microorganisms realizes not onlyin vitro but in wound too. Direct correlation between expression of ability to form biofilms and duration of illness allows to consider this characteristic as marker of switch of infectious process to chronic state.
Insights
Surgical soft tissue infection agents, including Pseudomonas and Enterococcus, readily form biofilms. This biofilm formation correlates with chronic infection duration, indicating its role in persistent surgical site infections.
Area of Science:
- Microbiology
- Infectious Diseases
- Surgical Pathology
Context:
- Surgical soft tissue infections pose significant clinical challenges.
- Biofilm formation by pathogens is a key factor in chronic and recurrent infections.
- Understanding microbial virulence factors is crucial for effective treatment strategies.
Purpose:
- To investigate the biofilm-forming capacity of common bacterial agents responsible for surgical soft tissue infections.
- To correlate biofilm formation with clinical parameters, specifically the duration of illness.
- To assess the in vitro and in vivo relevance of microbial biofilm production in wound infections.
Summary:
- The study examined 38 Staphylococcus aureus, 16 coagulase-negative staphylococci, 20 enterococci, and 10 pseudomonades strains.
- Pseudomonades and 80% of enterococci demonstrated significant biofilm formation, while staphylococci showed less.
- A strong positive correlation (r=0.68) was observed between biofilm formation and illness duration, with biofilms detected in wounds after 3+ days.
Impact:
- Identifies biofilm formation as a common characteristic of surgical soft tissue infection pathogens.
- Suggests biofilm-forming ability as a potential marker for the chronicity of surgical infections.
- Highlights the clinical relevance of microbial biofilms in wound healing and infection persistence.
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