Publications by authors named "Rafaele Frassini"

Surface modification of implant materials continues to address the issue of osseointegration. Moreover, combining osseointegration with bactericidal or antifouling properties in implants remains an open question for debate. Over the years, silver has been widely used as an agent for killing and preventing bacterial proliferation.

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Background: COVID-19 has caused moderately severe infections in humans over the past few years, leading to >759 million confirmed cases. This situation highlights an urgent need to develop accurate diagnostic tests to monitor infectious disease and to adopt alternative methods such as CLIA to achieve low detection levels of proteins on diagnostic platforms.

Objectives: Develop in-house immunoassay for ELISA and CLIA to diagnose COVID-19.

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A new series of compounds planned by molecular hybridization of the nucleobases uracil and thymine, or the xanthine theobromine, with coumarins, and linked through 1,2,3-triazole heterocycles were evaluated for their in vitro anticancer activity against the human tumor cell lines: colon carcinoma (HCT116), laryngeal tumor cells (Hep-2), and lung carcinoma cells (A549). The hybrid compound exhibited better activity in the series, showing an IC50 of 24.19 ± 1.

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Article Synopsis
  • Copper has effective antibacterial properties that can be enhanced with light, making it a viable option for disinfecting surfaces.
  • The study explored both microsized (CuMPs) and nanosized (CuNPs) copper particles, revealing that CuNPs were generally more effective but CuMPs still showed significant biocidal activity, especially under illumination.
  • The findings suggest that CuMPs can serve as a cost-effective alternative for self-cleaning materials in disinfection processes, competing well with smaller nanoparticles.
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Objective: Desmarestia anceps Montagne (D. anceps) seaweed has been shown to play a range of biologic activities, such as anti-inflammatory and antioxidant properties. The purpose of this study was to investigate the effects of D.

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Ti6Al4V is one of the most lightweight, mechanically resistant, and appropriate for biologically induced corrosion alloys. However, surface properties often must be tuned for fitting into biomedical applications, and therefore, surface modification is of paramount importance to carry on its use. This work compares the interaction between two different cell lines (L929 fibroblasts and osteoblast-like MG63) and medical grade Ti6Al4V after surface modification by plasma nitriding or thin film deposition.

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Wound infections are the main complication when treating skin wounds. This work reports a novel antimicrobial material using green synthesized zinc oxide nanoparticles (ZnONPs) incorporated in polymeric fibers for wound healing purposes. ZnONPs are a promising antimicrobial nanomaterial with high activity against a range of microorganisms, including drug-resistant bacteria.

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The present study aimed to determine the chemical composition and biological activity of the essential oil obtained from Phyllogonium viride Brid. (Phyllogoniaceae, Bryophyta), whose samples were collected in southern Brazil. For the first time, the cytotoxic activity of the essential oil of P.

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