Publications by authors named "Juan Jose de Damborenea"

The growing concern arising from viruses with pandemic potential and multi-resistant bacteria responsible for hospital-acquired infections and outbreaks of food poisoning has led to an increased awareness of indirect contact transmission. This has resulted in a renewed interest to confer antimicrobial properties to commonly used metallic materials. The present work provides a full characterization of optimized fluoride anodic films grown in stainless steel 304L as well as their antimicrobial properties.

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Article Synopsis
  • Prosthetic joint infections are serious but rare, causing significant emotional and economic burdens on patients and healthcare systems.
  • The study investigated how four bacterial species adhere to two different alloys (Ti6Al4V and CoCrMo) commonly used in joint prostheses by analyzing surface characteristics like topography and roughness.
  • Results showed that CoCrMo promoted more bacterial aggregation and reduced bacterial viability compared to Ti6Al4V, suggesting that chemical composition plays a crucial role in bacterial adhesion despite similar physical surface properties.
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Prosthetic joint infection (PJI) is one of the most devastating complications in orthopedic surgery. One approach used to prevent PJI is local antibiotic therapy. This study evaluates the antibiotic release, in vitro cytocompatibility and in vivo effectiveness in preventing PJI caused by Staphylococcus aureus (S.

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Joint prosthesis failure is mainly related to aseptic loosening and prosthetic joint infections, both associated with high morbidity and a substantial cost burden for patients and health systems. The development of a biomaterial capable of stimulating bone growth while minimizing bacterial adhesion would reduce the incidence of prosthetic failure. Using an in vivo rabbit model, this study evaluates the osseointegration effect of the fluorine (F)- and phosphorus (P)-doped bottle-shaped nanostructured (bNT) Ti-6Al-4V alloy and effectiveness of monitoring urine aluminum concentration to determine the presence of infection in Ti-6Al-4V implants.

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Objective: Implant-related infection is a devastating complication in orthopedic surgery. Aiming to minimize this problem, many material modifications have been developed. Here we report a study of a surface modification of Ti-6 Al-4 V alloy using a methodology that enables the study of interactions between bacteria and the material in the presence of eukaryotic cells.

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Joint prosthesis failure is mainly related to aseptic loosening and prosthetic joint infections, both of which are associated with high morbidity and substantial costs for patients and health systems. The development of a biomaterial that is capable of stimulating bone growth while minimizing bacterial adhesion would reduce the incidence of prosthetic failure. We report antibacterial and osteostimulatory effects in a novel fluorine-phosphorus (F-P)-doped TiO oxide film grown on Ti-6Al-4V alloy with a nanostructure of bottle-shaped nanotubes (bNT) using five bacterial species (, , , , and ) and MCT3T3-E1 osteoblastic cells.

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Article Synopsis
  • - The study focused on the release and antibacterial effects of gentamicin and vancomycin antibiotics from F-doped nanotubular anodic oxide layers on titanium alloy Ti-6Al-4V.
  • - Antibiotic release was monitored over a period of time, demonstrating that while concentrations decreased, their biological effectiveness remained, significantly reducing bacterial survival rates in the specimens treated with gentamicin.
  • - The combination of gentamicin and vancomycin enhanced the antibacterial properties of the surface, making it biocompatible and useful for tissue integration and broad-spectrum bacterial defense.
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The Ti-6Al-4V alloy is one of the most commonly used in orthopedic surgery. Despite its advantages, there is an increasing need to use new titanium alloys with no toxic elements and improved biomechanical properties, such as Ti-13Nb-13Zr. Prosthetic joint infections (PJI) are mainly caused by Gram-positive bacteria; however, Gram-negative bacteria are a growing problem due to associated multidrug resistance.

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Orthopaedic device-related infections are closely linked to biofilm formation on the surfaces of these devices. Several modified titanium (Ti-6Al-4V) surfaces doped with fluorine were studied in order to evaluate the influence of these modifications on biofilm formation by Gram-positive and Gram-negative bacteria as well as a yeast. The biofilm studies were performed according to the standard test method approved by ASTM (Designation: E2196-12) using the Rotating Disk Reactor.

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