1
|
Kuwada N, Fujii Y, Nakatani T, Ousaka D, Tsuji T, Imai Y, Kobayashi Y, Oozawa S, Kasahara S, Tanemoto K. Diamond-like carbon coating to inner surface of polyurethane tube reduces Staphylococcus aureus bacterial adhesion and biofilm formation. J Artif Organs 2024; 27:108-116. [PMID: 37227545 PMCID: PMC11126441 DOI: 10.1007/s10047-023-01403-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 05/07/2023] [Indexed: 05/26/2023]
Abstract
Staphylococcus aureus is one of the main causative bacteria for polyurethane catheter and artificial graft infection. Recently, we developed a unique technique for coating diamond-like carbon (DLC) inside the luminal resin structure of polyurethane tubes. This study aimed to elucidate the infection-preventing effects of diamond-like carbon (DLC) coating on a polyurethane surface against S. aureus. We applied DLC to polyurethane tubes and rolled polyurethane sheets with our newly developed DLC coating technique for resin tubes. The DLC-coated and uncoated polyurethane surfaces were tested in smoothness, hydrophilicity, zeta-potential, and anti-bacterial properties against S. aureus (biofilm formation and bacterial attachment) by contact with bacterial fluids under static and flow conditions. The DLC-coated polyurethane surface was significantly smoother, more hydrophilic, and had a more negative zeta-potential than did the uncoated polyurethane surface. Upon exposure to bacterial fluid under both static and flow conditions, DLC-coated polyurethane exhibited significantly less biofilm formation than uncoated polyurethane, based on absorbance measurements. In addition, the adherence of S. aureus was significantly lower for DLC-coated polyurethane than for uncoated polyurethane under both conditions, based on scanning electron microscopy. These results show that applying DLC coating to the luminal resin of polyurethane tubes may impart antimicrobial effects against S. aureus to implantable medical polyurethane devices, such as vascular grafts and central venous catheters.
Collapse
Affiliation(s)
- Noriaki Kuwada
- Department of Cardiovascular Surgery, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Yasuhiro Fujii
- Department of Cardiovascular Surgery, Okayama University Faculty of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ku, Okayama-City, Okayama, 700-8558, Japan.
| | - Tatsuyuki Nakatani
- Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridai-Cho, Kita-Ku, Okayama-City, Okayama, Japan
| | - Daiki Ousaka
- Department of Pharmacology, Okayama University Faculty of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ku, Okayama-City, Okayama, 700-8558, Japan
| | - Tatsunori Tsuji
- Department of Cardiovascular Surgery, Okayama University Faculty of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ku, Okayama-City, Okayama, 700-8558, Japan
| | - Yuichi Imai
- Institute of Frontier Science and Technology, Okayama University of Science, 1-1 Ridai-Cho, Kita-Ku, Okayama-City, Okayama, Japan
| | - Yasuyuki Kobayashi
- Division of Cardiovascular Surgery, Department of Surgery, Labatt Family Heart Centre, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, ON, M5G 1X8, Canada
| | - Susumu Oozawa
- Division of Medical Safety Management, Safety Management Facility, Okayama University Hospital, 2-5-1 Shikata-Cho, Kita-Ku, Okayama-City, Okayama, 700-8558, Japan
| | - Shingo Kasahara
- Department of Cardiovascular Surgery, Okayama University Faculty of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-Cho, Kita-Ku, Okayama-City, Okayama, 700-8558, Japan
| | - Kazuo Tanemoto
- Department of Cardiovascular Surgery, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| |
Collapse
|