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논문 기본 정보

자료유형
학술저널
저자정보
Norbert Harrasser (Klinikum rechts der Isar Technical University of Munich) Sebastian Jüssen (Klinikum rechts der Isar Technical Univ. of Munich) Andreas Obermeir (Klinikum rechts der Isar Technical Univ. of Munich) Ralf Kmeth (Augsburg University) Bernd Stritzker (Augsburg University) Hans Gollwitzer (Klinikum rechts der Isar Technical Univ. of Munich) Rainer Burgkart (Klinikum rechts der Isar Technical Univ. of Munich)
저널정보
한국생체재료학회 생체재료학회지 생체재료학회지 제20권 제3호
발행연도
2016.9
수록면
181 - 190 (10page)
DOI
10.1186/s40824-016-0062-6

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Background: Antibacterial coatings of medical devices have been introduced as a promising approach to reduce the risk of infection. In this context, diamond-like carbon coated polyethylene (DLC-PE) can be enriched with bactericidal ions and gain antimicrobial potency. So far, influence of different deposition methods and ions on antimicrobial effects of DLC-PE is unclear. Methods: We quantitatively determined the antimicrobial potency of different PE surfaces treated with direct ion implantation (II) or plasma immersion ion implantation (PIII) and doped with silver (Ag-DLC-PE) or copper (Cu-DLC-PE). Bacterial adhesion and planktonic growth of various strains of S. epidermidis were evaluated by quantification of bacterial growth as well as semiquantitatively by determining the grade of biofilm formation by scanning electron microscopy (SEM). Additionally silver release kinetics of PIII-samples were detected. Results: (1) A significant (p < 0.05) antimicrobial effect on PE-surface could be found for Ag- and Cu-DLC-PE compared to untreated PE. (2) The antimicrobial effect of Cu was significantly lower compared to Ag (reduction of bacterial growth by 0.8 (Ag) and 0.3 (Cu) logarithmic (log)-levels). (3) PIII as a deposition method was more effective in providing antibacterial potency to PE-surfaces than II alone (reduction of bacterial growth by 2.2 (surface) and 1.1 (surrounding medium) log-levels of PIII compared to 1.2 (surface) and 0.6 (medium) log-levels of II). (4) Biofilm formation was more decreased on PIII-surfaces compared to II-surfaces. (5) A silver-concentration-dependent release was observed on PIII-samples. Conclusion: The results obtained in this study suggest that PIII as a deposition method and Ag-DLC-PE as a surface have high bactericidal effects.

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