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A strategy to control colonization of pathogens: embedding of lactic acid bacteria on the surface of urinary catheter

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Abstract

Indwelling urinary catheterization is one of the major causes of urinary tract infection (UTI) in hospitalized patients worldwide. A catheter serves as a surface for the colonization and formation of biofilm by UTI-related pathogenic bacteria. To combat the biofilm formation on its surface, several strategies have already been employed such as coating it with antibiofilm and antimicrobial compounds. For instance, the application of lactic acid bacteria (LAB) offers a potential strategy for the treatment of biofilm formation on the surface of the urinary catheter due to its ability to kill the pathogenic bacteria. The killing of pathogenic bacteria by LAB occurs via the production of antimicrobial compounds such as lactic acid, bacteriocin, and hydrogen peroxide. LAB also displays a competitive exclusion mechanism to prevent the adhesion of pathogens on the surfaces. Hence, LAB has been extensively applied as a bacteriotherapy to combat infectious diseases. Several strategies have been employed to attach LAB to a surface, but its easy detachment during long time exposure becomes one of the drawbacks in its application. Here, we have proposed a novel strategy for its adhesion on the surface of the urinary catheter with the utilization of mannose-specific adhesin (Msa) protein in a way similar as uropathogenic bacteria interacts between Msa present on the tip of the type I fimbriae/pilus and the mannose moieties on the host epithelial cell surfaces.

Key points

Urinary tract infection (UTI) is one of the common hospital–acquired infections, which is associated with the application of an indwelling urinary catheter.

Based on the competitive exclusions properties of LAB, attachment of the LAB on the catheter surface would be a promising approach to control the formation of pathogenic biofilm.

The strategy employed for the adhesion of LAB is via a covalent interaction of its mannose-specific adhesin (Msa) protein to the mannose residues grafted on the catheter surface.

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Funding

This work was supported by Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education (NRF-2019R1A2C1087156).

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All authors were involved in the writing and editing of the manuscript.

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Correspondence to Fazlurrahman Khan or Young-Mog Kim.

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The authors declare that they have no conflict of interest.

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This review paper does not contain any studies with human participants or animals.

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Khan, F., Tabassum, N. & Kim, YM. A strategy to control colonization of pathogens: embedding of lactic acid bacteria on the surface of urinary catheter. Appl Microbiol Biotechnol 104, 9053–9066 (2020). https://doi.org/10.1007/s00253-020-10903-6

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  • DOI: https://doi.org/10.1007/s00253-020-10903-6

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