Effect of the Biopolymer Carrier on Staphylococcus Aureus Bacteriophage Lytic Activity
Biomolecules 2022
Līga Stīpniece, Dace Rezevska, Juta Kroiča, Kārlis Rācenis

The use of implant materials is always associated with the risk of infection. Moreover, the effectiveness of antibiotics is reduced due to antibiotic-resistant pathogens. Thus, selecting the appropriate alternative antimicrobials for local delivery systems is correlated with successful infection management. We evaluated immobilization of the S. aureus specific bacteriophages in clinically recognized biopolymers, i.e., chitosan and alginate, to control the release profile of the antimicrobials. The high-titre S. aureus specific bacteriophages were prepared from commercial bacteriophage cocktails. The polymer mixtures with the propagated bacteriophages were then prepared. The stability of the S. aureus bacteriophages in the biopolymer solutions was assessed. In the case of chitosan, no plaques indicating the presence of the lytic bacteriophages were observed. The titre reduction of the S. aureus bacteriophages in the Na-alginate was below 1 log unit. Furthermore, the bacteriophages retained their lytic activity in the alginate after crosslinking with Ca2+ ions. The release of the lytic S. aureus bacteriophages from the Ca-alginate matrices in the TRIS-HCl buffer solution (pH 7.4 ± 0.2) was determined. After 72 h - 0.292 ± 0.021% of bacteriophages from the Ca-alginate matrices were released. Thus, sustained release of the lytic S. aureus bacteriophages can be ensured.


Atslēgas vārdi
biomaterials-associated infections; antimicrobials; bacteriophages; biopolymers
DOI
10.3390/biom12121875
Hipersaite
https://www.mdpi.com/2218-273X/12/12/1875

Stīpniece, L., Rezevska, D., Kroiča, J., Rācenis, K. Effect of the Biopolymer Carrier on Staphylococcus Aureus Bacteriophage Lytic Activity. Biomolecules, 2022, Vol. 12, No. 12, Article number 1875. e-ISSN 2218-273X. Available from: doi:10.3390/biom12121875

Publikācijas valoda
English (en)
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