Rhamnolipid Enhances Burkholderia PseudomalleiBiofilm Susceptibility, Disassembly and Production of Virulence Factors

Autor: Sidrim, José JC, Ocadaque, Crister J, Amando, Bruno R, de M Guedes, Glaucia M, Costa, Cecília L, Brilhante, Raimunda SN, A Cordeiro, Rossana de, Rocha, Marcos FG, SCM Castelo-Branco, Débora
Zdroj: Future Microbiology; August 2020, Vol. 15 Issue: 12 p1109-1121, 13p
Abstrakt: Aim:This study evaluated the effect of the biosurfactant rhamnolipid on the antimicrobial susceptibility, biofilm growth dynamics and production of virulence factors by Burkholderia pseudomallei. Materials & methods:The effects of rhamnolipid on planktonic and biofilm growth and its interaction with antibacterial drugs were evaluated. Then, its effects on growing and mature biofilms and on protease and siderophore production were assessed. Results:Rhamnolipid did not inhibit B. pseudomalleigrowth, but significantly enhanced the activity of meropenem and amoxicillin-clavulanate against mature biofilms. Rhamnolipid significantly reduced the biomass of mature biofilms, significantly increased protease production by growing and mature biofilms and siderophore release by growing biofilms. Conclusion:Rhamnolipid enhances the antimicrobial activity against B. pseudomallei, assists biofilm disassembly and alters protease and siderophore production by bacterial biofilms.
Databáze: Supplemental Index