AIMS: To investigate the ability of a mixture of phage K and six of its modified derivatives to prevent biofilm formation by Staphylococcus aureus and also to reduce the established biofilm density. METHODS AND RESULTS: The bioluminescence-producing Staph. aureus Xen29 strain was used in the study, and incubation of this strain in static microtitre plates at 37°C for 48 h confirmed its strong biofilm-forming capacity. Subsequently, removal of established biofilms of Staph. aureus Xen29 with the high-titre phage combination was investigated over time periods of 24 h, 48 h and 72 h. Results suggested that these biofilms were eliminated in a time-dependent manner, with biofilm biomass reduction significantly greater after 72 h than after 24-48 h. In addition, initial challenge of Staph. aureus Xen29 with the phage cocktail resulted in the complete inhibition of biofilm formation over a 48-h period with no appearance of phage resistance. CONCLUSIONS: In general, our findings demonstrate the potential use of a modified phage combination for the prevention and successful treatment of Staph. aureus biofilms, which are implicated in several antibiotic-resistant infections. SIGNIFICANCE AND IMPACT OF THE STUDY: This study highlights the first use of phage K for the successful removal and prevention of biofilms of Staph. aureus.
AIMS: To investigate the ability of a mixture of phage K and six of its modified derivatives to prevent biofilm formation by Staphylococcus aureus and also to reduce the established biofilm density. METHODS AND RESULTS: The bioluminescence-producing Staph. aureus Xen29 strain was used in the study, and incubation of this strain in static microtitre plates at 37°C for 48 h confirmed its strong biofilm-forming capacity. Subsequently, removal of established biofilms of Staph. aureus Xen29 with the high-titre phage combination was investigated over time periods of 24 h, 48 h and 72 h. Results suggested that these biofilms were eliminated in a time-dependent manner, with biofilm biomass reduction significantly greater after 72 h than after 24-48 h. In addition, initial challenge of Staph. aureus Xen29 with the phage cocktail resulted in the complete inhibition of biofilm formation over a 48-h period with no appearance of phage resistance. CONCLUSIONS: In general, our findings demonstrate the potential use of a modified phage combination for the prevention and successful treatment of Staph. aureus biofilms, which are implicated in several antibiotic-resistant infections. SIGNIFICANCE AND IMPACT OF THE STUDY: This study highlights the first use of phage K for the successful removal and prevention of biofilms of Staph. aureus.
Authors: D R B Belgini; R S Dias; V M Siqueira; L A B Valadares; J M Albanese; R S Souza; A P R Torres; M P Sousa; C C Silva; S O De Paula; V M Oliveira Journal: World J Microbiol Biotechnol Date: 2014-07-01 Impact factor: 3.312
Authors: D R Alves; A Gaudion; J E Bean; P Perez Esteban; T C Arnot; D R Harper; W Kot; L H Hansen; M C Enright; A Tobias A Jenkins Journal: Appl Environ Microbiol Date: 2014-08-22 Impact factor: 4.792
Authors: Katrien Vandersteegen; Andrew M Kropinski; John H E Nash; Jean-Paul Noben; Katleen Hermans; Rob Lavigne Journal: J Virol Date: 2013-01-09 Impact factor: 5.103