Sökning: id:"swepub:oai:lup.lub.lu.se:66d43e9a-190c-4f9e-a2e0-c78ec747e44c" >
Biofilm formation o...
Biofilm formation on endovascular aneurysm repair (EVAR) grafts– a proof of concept in vitro model
-
- Sunnerhagen, Torgny (författare)
- Lund University,Lunds universitet,Infektionsmedicin,Sektion III,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Translationell infektionsmedicin,Forskargrupper vid Lunds universitet,Infection Medicine (BMC),Section III,Department of Clinical Sciences, Lund,Faculty of Medicine,Translational infection medicine,Lund University Research Groups,Copenhagen University Hospital,Region Skåne
-
- Schwartz, Franziska (författare)
- Copenhagen University Hospital
-
- Christophersen, Lars (författare)
- Copenhagen University Hospital
-
visa fler...
-
- Bjarnsholt, Thomas (författare)
- University of Copenhagen,Copenhagen University Hospital
-
- Qvortrup, Klaus (författare)
- University of Copenhagen
-
- Eldrup, Nikolaj (författare)
- Copenhagen University Hospital
-
- Vogt, Katja (författare)
- Copenhagen University Hospital
-
- Moser, Claus (författare)
- Copenhagen University Hospital,University of Copenhagen
-
visa färre...
-
(creator_code:org_t)
- 2023
- 2023
- Engelska.
-
Ingår i: Clinical Microbiology and Infection. - 1469-0691. ; 29:12, s. 1-1600
- Relaterad länk:
-
https://portal.resea... (primary) (free)
-
visa fler...
-
http://dx.doi.org/10... (free)
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- ObjectivesAn endovascular aneurysm repair (EVAR) graft is a catheter-implanted vascular prosthesis and is the preferred treatment for patients with aortic aneurysm. If an EVAR graft becomes the focus of infection, the treatment possibilities are limited as it is technically difficult to remove the graft to obtain source control. This study examines whether Pseudomonas aeruginosa and Staphylococcus aureus form biofilm on EVAR prostheses.MethodsEVAR graft sections were exposed to bacteria at 102 or 108 colony forming units (CFU)/ml in lysogeny broth and Krebs-Ringer at 37°C, bacterial biofilm formation was evaluated by scanning electron microscopy (SEM) and counting CFU on the graft sections following antibiotic exposure at x10 minimal inhibitory concentration (MIC). Bacteria were tested for tolerance to benzyl penicillin, tobramycin and ciprofloxacin.ResultsBacterial exposure for 15 minutes established biofilms on all prosthesis fragments (6/6 replicates). After 4 hours, bacteria were firmly attached to the EVAR prostheses and resisted washing. After 18 to 24 hours the median CFU/g of EVAR graft reached 5.2 x 108 (1.15 x 108 – 1.1 x 109) for S. aureus and 9.1 x 107 (3.5 x 107 – 6.25 x 108) for P. aeruginosa. SEM showed bacterial attachment to the graft pieces. There was a time-dependent development of tolerance with approximately 20 (tobramycin), 560 (benzyl penicillin), and 600 (ciprofloxacin) times more S. aureus surviving antibiotic exposure in 24 compared to 0 hours old biofilm. Five (tobramycin) and 170 times (ciprofloxacin) more P. aeruginosa survived antibiotic exposure in 24 compared to 0 hours old biofilms.ConclusionsOur results show that bacteria can rapidly adhere to and subsequently form antibiotic tolerant biofilms on EVAR graft material in concentrations equivalent to levels seen in transient bacteremia in vivo. Potentially, the system can be used for identifying optimal treatment combinations for infected EVAR prosthesis.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Infektionsmedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Infectious Medicine (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kirurgi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Surgery (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
Hitta via bibliotek
Till lärosätets databas