Biofilm Formation of Staphylococcus aureus Isolated from Infected Wound

Document Type : Original Article

Authors

1 Department of Internal medicine, Faculty of Medicine, Sohag University

2 Department of Medical Microbiology and immunology, Faculty of Medicine, Sohag University

3 Department of Medical Microbiology and immunology, Faculty of Medicine, Sohag University.

Abstract

Background: Staphylococcus aureus  has the ability  to form biofilms, and causes significant mortality and morbidity in the patients with wounds. Our aim was to study the in vitro biofilm-forming ability of isolated S. aureus
patients and methods: one hundred clinical isolates of S. aureus were isolated from 350 pus samples using standard microbiological techniques. Biofilm formation ability  of  these isolates was detected  phenotypically by tissue culture plate (TCP) method and congo red agar (CRA) and genotypically by detection of ica ABCD genes by PCR.
Results: The clinical isolates of S. aureus recovered from infected wounds exhibit a high degree of biofilm formation Biofilm formation was observed in (76 %), (74%) and (70%) isolates of S. aureus via TCP method CRA and genotypically, respectively.
Conclusion: This study illustrated that PCR method can be adopted as most suitable an reproducible method for detection of biofilm. CRA is qualitative, simple, inexpensive and easily reproducible method and convenient as screening method. TCP is semiquantitative method and remains a precious tool for in vitro screening of different biomaterial for the adhesive properties. Regular surveillance of biofilm formation by S. aureus leads to the early treatment of the wound infection.
 

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