Aspect ratio of nano/microstructures determines Staphylococcus aureus adhesion on PET and titanium surfaces

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • A-k Meinshausen - , Otto-von-Guericke-Universität Magdeburg (Autor:in)
  • M. Herbster - , Otto-von-Guericke-Universität Magdeburg (Autor:in)
  • C. Zwahr - , Professur für Laserbasierte Fertigung (Autor:in)
  • M. Soldera - , Professur für Laserbasierte Fertigung (Autor:in)
  • A. Mueller - , Otto-von-Guericke-Universität Magdeburg, Helmholtz-Zentrum für Infektionsforschung (HZI) (Autor:in)
  • T. Halle - , Otto-von-Guericke-Universität Magdeburg (Autor:in)
  • A. F. Lasagni - , Professur für Laserbasierte Fertigung, Fraunhofer-Institut für Werkstoff- und Strahltechnik (Autor:in)
  • Jessica Bertrand - , Otto-von-Guericke-Universität Magdeburg (Autor:in)

Abstract

Aims: Joint infections cause premature implant failure. The avoidance of bacterial colonization of implant materials by modification of the material surface is therefore the focus of current research. In this in vitro study the complex interaction of periodic structures on PET and titanium surfaces on the adhesion of Staphylococcus aureus is analysed. Methods and Results: Using direct laser interference patterning as well as roll-to-roll hot embossing methods, structured periodic textures of different spatial distance were produced on surfaces and S. aureus were cultured for 24 h on these. The amount of adhering bacteria was quantified using fluorescence microscopy and the local adhesion behaviour was investigated using scanning electron microscopy. For PET structures, minimal bacterial adhesion was identified for an aspect ratio of about 0·02. On titanium structures, S. aureus adhesion was significantly decreased for profile heights of < 200 nm. Our results show a significantly decreased bacterial adhesion for structures with an aspect ratio range of 0·02 to 0·05. Conclusions: We show that structuring on surfaces can decrease the amount of S. aureus on titanium and PET as common implant materials. Significance and Impact of the Study: The study highlights the immense potential of applying specific structures to implant materials to prevent implant colonization with pathogen bacteria.

Details

OriginalspracheEnglisch
Seiten (von - bis)1498-1514
Seitenumfang17
FachzeitschriftJournal of applied microbiology
Jahrgang131
Ausgabenummer3
Frühes Online-DatumMärz 2021
PublikationsstatusVeröffentlicht - Sept. 2021
Peer-Review-StatusJa

Externe IDs

PubMed 33565669
Scopus 85102251878

Schlagworte

Schlagwörter

  • Aspect ratio, Aureus, Orthopaedic implant, Periprosthetic joint infection, Pet, S, Structures, Titanium