Two-step approach using degradable magnesium to inhibit surface biofilm and subsequently kill planktonic bacteria

Pei Chun Wong, Ren Yi Wang, Long Sheng Lu, Wei Ru Wang, Jason Shian Ching Jang, Jia Lin Wu, Tai Yuan Su, Ling Hua Chang

Research output: Contribution to journalArticlepeer-review

Abstract

Bacterial infection remains a great risk in medical implantation surgery. In this paper, we found that degradable metals may be a feasible alternative option of antibacterial implantation materials. It is known that the spalling mechanism of magnesium (Mg) during degradation leads to Mg ions-induced alkaline environment, which is harmful to planktonic bacteria. In this study, we showed that alkaline pH environment is almost harmless to those adhesive bacteria protected in well-formed biofilms. Moreover, experimental results demonstrated that the biofilm formed in the place where Mg spalls are destroyed, releasing the covered bacteria to be planktonic in the alkaline environment. As a result, the colonization of biofilms continues to shrink during the degradation of Mg. It implies that if degradable metal is employed as implantation material, even if bacterial infection occurs, it may be possibly cured without second surgery.

Original languageEnglish
Article number1677
JournalBiomedicines
Volume9
Issue number11
DOIs
Publication statusPublished - Nov 2021

Keywords

  • Alkaline
  • Antibacterial
  • Bacterial infection
  • Biodegradation
  • Biofilm
  • Magnesium
  • Spalling

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Biochemistry, Genetics and Molecular Biology(all)

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