| Diamond-like carbon coatings on ureteral stents--a new strategy for decreasing the formation of crystalline bacterial biofilms? | |
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MedLine Citation:
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PMID: 17437849 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Any catheter material placed in the urinary tract provides a surface for bacterial colonization and, therefore, it is susceptible to encrustation with crystalline bacterial biofilm. Encrustation and blockage by biofilms remain a major complication in patient care. Most patients with indwelling ureteral stents experience irritative symptoms related to these implants and many experience discomfort. MATERIALS AND METHODS: Plasma deposited diamond-like amorphous carbon coatings are well-known for their excellent biocompatibility. A low temperature, low pressure plasma enhanced chemical vapor deposition technology was developed especially for coating polymeric medical implants with diamond-like carbon. We investigated the ability of diamond-like carbon to decrease the formation of crystalline bacterial biofilm as well as stent related side effects and discomfort. Diamond-like carbon coated ureteral Double-J stents were tested in vivo. RESULTS: In 10 patients with heavy encrustation, different underlying diseases and a stent removal frequency of less than 6 weeks due to encrustation a total of 26 diamond-like carbon coated stents were successfully tested for their ability to decrease the extent of crystalline biofilm formation. There was a 2,467-day period of experience with diamond-like carbon coated stents. No primarily stent related complications occurred. No crystalline biofilm formation was observed in vivo. Excellent and facile handling, a less painful replacement procedure and high tolerance of application were reported by physicians and patients. Due to low friction the coated stents could be placed and removed much more easily than standard stents. The frequency and severity of symptomatic urinary tract infections were distinctly decreased. CONCLUSIONS: Diamond-like carbon coating is a new strategy to improve the surface properties of ureteral stents. This novel surface effectively decreases friction, encrustation tendencies and biofilm formation. |
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Authors:
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Norbert Laube; Lisa Kleinen; Jörg Bradenahl; Andreas Meissner |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of urology Volume: 177 ISSN: 0022-5347 ISO Abbreviation: J. Urol. Publication Date: 2007 May |
Date Detail:
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Created Date: 2007-04-17 Completed Date: 2007-05-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376374 Medline TA: J Urol Country: United States |
Other Details:
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Languages: eng Pagination: 1923-7 Citation Subset: AIM; IM |
Affiliation:
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Division of Experimental Urology, Department of Urology, University of Bonn, Bonn, Germany. norbert.laube@ukb.uni-bonn.de |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Biofilms* Carbon* Coated Materials, Biocompatible* Female Follow-Up Studies Humans Incidence Male Middle Aged Prosthesis Design Prosthesis Failure Prosthesis Implantation / instrumentation* Prosthesis-Related Infections / epidemiology, prevention & control* Stents* Ureteral Diseases / surgery* Urinary Tract Infections / epidemiology, prevention & control |
| Chemical | |
Reg. No./Substance:
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0/Coated Materials, Biocompatible; 7440-44-0/Carbon |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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