Crystallinity of TiO2 nanotubes and its effects on fibroblast viability, adhesion, and proliferation

Dias-Netipanyj, Marcela Ferreira; Sopchenski, Luciane; Gradowski, Thatyanne; Elífio-Esposito, Selene; Popat, Ketul C.; Soares, Paulo

doi:10.1007/s10856-020-06431-4

Cited by 10 publications

(7 citation statements)

References 77 publications

(89 reference statements)

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“…Qualitative SEM sample preparation followed previously described protocols 11 . Titanium-alloy devices with growing biofilm were allocated into sterile glass Petri dishes filled with primary fixative agent (0.68 g -1 sucrose, 0.42 g -1 sodium cacodylate, 0.6 mL -1 30% glutaraldehyde) (Merck, Darmstadt, Germany) and 19.4 mL -1 of deionized water, fully covering specimens for 45 min.…”

Section: Methodsmentioning

confidence: 99%

Saprochaete clavata invasive infection: characterization, antifungal susceptibility, and biofilm evaluation of a rare yeast isolated in Brazil

Kraft

Ribeiro

Petroski

et al. 2023

Rev. Inst. Med. trop. S. Paulo

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Rare emerging pathogens such as Saprochaete clavata are associated with invasive fungal diseases, high morbidity, mortality, rapidly fatal infections, and outbreaks. However, little is known about S. clavata infections, epidemiology, risk factors, treatment, biofilms, and disease outcomes. The objective of this study was to describe a new case of severe S. clavata infection in a patient diagnosed at a referral children's hospital in Brazil, including antifungal minimal inhibitory concentration, S. clavata biofilm characterization, and molecular characterization. The S. clavata isolated from an immunocompromised 11-year-old male patient was characterized using MALDI-TOF, Gram staining, scanning electron microscopy (SEM), and next generation sequencing (NGS) of genomic DNA. Biofilm production was also evaluated in parallel with determining minimal inhibitory concentration (MIC) and biofilm sensitivity to antifungal treatment. We observed small to medium, whitish, farinose, dry, filamentous margin colonies, yeast-like cells with bacillary features, and biofilm formation. The MALDI-TOF system yielded a score of ≥ 2,000, while NGS confirmed S. clavata presence at the nucleotide level. The MIC values (in mg L -1 ) for tested drugs were as follows: fluconazole = 2, voriconazole ≤ 2, caspofungin ≥ 8, micafungin = 2, amphotericin B = 4, flucytosine ≤ 1, and anidulafungin = 1. Amphotericin B can be active against S. clavata biofilm and the fungus can be susceptible to new azoles. These findings were helpful for understanding the development of novel treatments for S. clavata-induced disease, including combined therapy for biofilm-associated infections.

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Section: Methodsmentioning

confidence: 99%

Saprochaete clavata invasive infection: characterization, antifungal susceptibility, and biofilm evaluation of a rare yeast isolated in Brazil

Kraft

Ribeiro

Petroski

et al. 2023

Rev. Inst. Med. trop. S. Paulo

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“…Moreover, the adjustment of process parameters, including the electrolyte composition and concentration, as well as the temperature, applied potential, process duration, and power supply mode, regulates the morphology, roughness, and physical and chemical properties of the coating ( Ercan et al, 2011 ; Minagar et al, 2012 ; Fialho and Carvalho, 2019 ). Anodic oxidation has been successfully used with titanium and other metals to produce ordered nanostructures, which promote the adsorption of proteins, ions, and cells ( Wang et al, 2019a ; Dias-Netipanyj et al, 2020 ).…”

Section: Surface Modification Of Porous Tamentioning

confidence: 99%

Preparation, modification, and clinical application of porous tantalum scaffolds

Wang

Zhou

et al. 2023

Front. Bioeng. Biotechnol.

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Porous tantalum (Ta) implants have been developed and clinically applied as high-quality implant biomaterials in the orthopedics field because of their excellent corrosion resistance, biocompatibility, osteointegration, and bone conductivity. Porous Ta allows fine bone ingrowth and new bone formation through the inner space because of its high porosity and interconnected pore structure. It contributes to rapid bone integration and long-term stability of osseointegrated implants. Porous Ta has excellent wetting properties and high surface energy, which facilitate the adhesion, proliferation, and mineralization of osteoblasts. Moreover, porous Ta is superior to classical metallic materials in avoiding the stress shielding effect, minimizing the loss of marginal bone, and improving primary stability because of its low elastic modulus and high friction coefficient. Accordingly, the excellent biological and mechanical properties of porous Ta are primarily responsible for its rising clinical translation trend. Over the past 2 decades, advanced fabrication strategies such as emerging manufacturing technologies, surface modification techniques, and patient-oriented designs have remarkably influenced the microstructural characteristic, bioactive performance, and clinical indications of porous Ta scaffolds. The present review offers an overview of the fabrication methods, modification techniques, and orthopedic applications of porous Ta implants.

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“…The properties of the oxide layer are mainly adjusted by changing the current power, anodic oxidation time, temperature, applied potential, and chemical composition of electrolytic liquefaction. Anodic oxidation is an available scheme to produce regular nanoscale structures and has been successfully applied to many metal surfaces ( Dias-Netipanyj et al, 2020 ).…”

Section: Surface Nanocrystallizationmentioning

confidence: 99%

Advances in surface modification of tantalum and porous tantalum for rapid osseointegration: A thematic review

Wang

et al. 2022

Front. Bioeng. Biotechnol.

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After bone defects reach a certain size, the body can no longer repair them. Tantalum, including its porous form, has attracted increasing attention due to good bioactivity, biocompatibility, and biomechanical properties. After a metal material is implanted into the body as a medical intervention, a series of interactions occurs between the material’s surface and the microenvironment. The interaction between cells and the surface of the implant mainly depends on the surface morphology and chemical composition of the implant’s surface. In this context, appropriate modification of the surface of tantalum can guide the biological behavior of cells, promote the potential of materials, and facilitate bone integration. Substantial progress has been made in tantalum surface modification technologies, especially nano-modification technology. This paper systematically reviews the progress in research on tantalum surface modification for the first time, including physicochemical properties, biological performance, and surface modification technologies of tantalum and porous tantalum.

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Crystallinity of TiO2 nanotubes and its effects on fibroblast viability, adhesion, and proliferation

Cited by 10 publications

References 77 publications

Saprochaete clavata invasive infection: characterization, antifungal susceptibility, and biofilm evaluation of a rare yeast isolated in Brazil

Saprochaete clavata invasive infection: characterization, antifungal susceptibility, and biofilm evaluation of a rare yeast isolated in Brazil

Preparation, modification, and clinical application of porous tantalum scaffolds

Advances in surface modification of tantalum and porous tantalum for rapid osseointegration: A thematic review

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