Inhibition of bacterial adhesion on PVC endotracheal tubes by RF-oxygen glow discharge, sodium hydroxide and silver nitrate treatments

Balazs, Dawn J.; Triandafillu, K.; Wood, Peter C.; Chevolot, Yann; Delden, Christian van; Harms, Hauke; Hollenstein, C.; Mathieu, H

doi:10.1016/j.biomaterials.2003.08.053

Cited by 194 publications

(130 citation statements)

References 22 publications

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“…The aliphatic carbon peak was used as reference and was set at 285.0 eV. Two other contributions were detected mostly on polished samples at 286.4 ± 0.2 eV and 288.8 ± 0.2 eV and were assigned to C-O groups and to carbonates or carboxylic group, respectively [16,17]. The lead signal Pb 4f 7/2 showed a main contribution at 183.3 ± 0.3 eV and a minor peak at 136.6 ± 0.3 eV corresponding to Pb(+2) and to metallic lead [15,[18][19][20], respectively.…”

Section: Resultsmentioning

confidence: 99%

Wear and frictional mechanisms of copper-based bearing alloys

Equey

Houriet

Mischler

2011

Wear

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a b s t r a c tThe present study investigated the role of alloy microstructure and surface roughness on wear and friction behavior of leaded and unleaded tin bronzes. Ball-on-disk experiments were carried out under dry conditions with steel balls sliding against bronze disks. Scanning electron microscopy (SEM), energy dispersive electron microscopy (EDX), x-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy were performed to analyze the sliding tracks and the ball scars. The wear reducing effect of lead was associated to the formation of an oxidized lead rich layer. When no such film formed on the leaded bronze wear was more severe than in case of unleaded bronze. Nevertheless, the presence of lead in the alloy was a necessary but not sufficient condition to obtain a smeared layer and thus a lubricating effect of the leaded alloy. Two mechanistic hypotheses were formulated to explain the formation of the smeared layer.

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Section: Resultsmentioning

confidence: 99%

Wear and frictional mechanisms of copper-based bearing alloys

Equey

Houriet

Mischler

2011

Wear

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“…Associated with this problem is the inability to achieve sufficiently high concentrations of antimicrobial agent at the luminal surface of the device. Therefore alternative strategies have been developed to address these issues including the use of bioactive endotracheal tubes [51,52] and the direct nebulization of antimicrobial surfaces across the luminal surfaces of the device and into the lungs [53].…”

Section: Discussionmentioning

confidence: 99%

Novel semi-interpenetrating hydrogel networks with enhanced mechanical properties and thermoresponsive engineered drug delivery, designed as bioactive endotracheal tube biomaterials

Jones

Andrews

Caldwell

et al. 2012

European Journal of Pharmaceutics and Biopharmaceutics

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“…However, its surfaces, just like other polymeric materials implanted into biological environments, are not exempt from the bacterial attacks. 24,25 Staphylococcus aureus bacteria is particularly important because it causes suppurative infections and toxinoses in humans as well as superficial skin lesions such as styes, boils, and furunculosis. 26 In view of these considerations, one possible solution is to attach antibiotic molecules to polymeric surfaces to inhibit the growth of bacteria.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial Surfaces on Expanded Polytetrafluoroethylene; Penicillin Attachment

2007

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Expanded polytetrafluoroethylene (ePTFE) was chemically modified to retard the growth of Staphylococcus aureus bacteria. This was accomplished by microwave plasma reactions in the presence of maleic anhydride (MA) to create acid functional groups on ePTFE surfaces, followed by esterification reactions with 200 and 600 molecular weight linear polyethylene glycol (PEG). Such surfaces were utilized for further reactions with penicillin (PEN) through etherification reactions to create anti-microbial surfaces. These reactions resulted in surface morphological changes, and spectroscopic analysis using attenuated total reflectance Fourier transform infrared spectroscopy (ATR FT-IR) revealed the formation of ester linkages resulting from reactions between PEN and PEG functionalities. Antibacterial activities were evaluated by a series of experiments where PEN-modified ePTFE specimens were immersed in a liquid aureus culture, and the bacteria growth was quantified by measuring % absorbance of the suspension at 600 nm wavelength. The lowest absorbance was observed for the solution containing PEN-PEG-MA-ePTFE specimens, thus showing highly effective anti-bacterial activity toward gram-positive Staphylococcus aureus bacteria. To our best knowledge, this is the first study that shows PEN-ePTFE surface modifications that are effective against gram-positive aureus bacteria.

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Inhibition of bacterial adhesion on PVC endotracheal tubes by RF-oxygen glow discharge, sodium hydroxide and silver nitrate treatments

Cited by 194 publications

References 22 publications

Wear and frictional mechanisms of copper-based bearing alloys

Wear and frictional mechanisms of copper-based bearing alloys

Novel semi-interpenetrating hydrogel networks with enhanced mechanical properties and thermoresponsive engineered drug delivery, designed as bioactive endotracheal tube biomaterials

Antibacterial Surfaces on Expanded Polytetrafluoroethylene; Penicillin Attachment

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