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Evaluation of the antifungal activity and cytotoxicity of alpha silver vanadate (a-AgVO3) microcrystals sinthesized in different temperatures

Grant number: 15/13834-2
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2016
Effective date (End): April 30, 2017
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal researcher:Carlos Eduardo Vergani
Grantee:Bruna Natalia Alves da Silva Pimentel
Home Institution: Faculdade de Odontologia (FOAr). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
Associated research grant:13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID


In recent years, silver microcrystals have become the focus of studies. One of the evidenced properties of these materials is its antimicrobial activity against different microorganisms, due to the presence of silver in its composition. In this study, the antifungal activity of silver alpha vanadate (±-AgVO3) against Candida albicans (ATCC 90028) and its cytotoxicity on spontaneously immortalized normal oral keratinocytes (NOK-si) cells will be investigated. The microcristiffs of ±-AgVO3 will be synthesized by the co-precipitation method under three different temperatures (10, 20 and 30ºC) and characterized by x-ray diffraction, field emission scanning electron microscopy and Raman spectroscopy. The antifungal activity will be evaluated from serial microdilution of microcrystals (according to the Clinical & Laboratory Standards Institute - CLSI), where minimum inhibitory (MIC) and fungicide (MFC) concentrations will be determined. Fluorescence microscopy images with microcrystals at the minimum inhibitory and fungicidal concentrations will be obtained in order to confirm the microbiological findings. The cell viability of NOK-si cells will be evaluated through the Alamar Blue assay, and scanning electron microscopy (SEM) images of all the evaluated groups will be performed. In cell assays only four concentrations of microcrystals (MIC, MFC, MIC diluted 10 times and 10 times concentrated) will be used. The results obtained will be submitted to statistical analysis for further interpretation and discussion.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ALVES DA SILVA PIMENTEL, BRUNA NATALIA; DE FOGGI, CAMILA CRISTINA; BARBUGLI, PAULA ABOUD; DE OLIVEIRA, REGIANE CRISTINA; DE AVILA, ERICA DORIGATTI; LONGO, ELSON; VERGANI, CARLOS EDUARDO. Antifungal activity and biocompatibility of alpha-AgVO3 microcrystals: A promising material against oral Candida disease. Materials Science & Engineering C-Materials for Biological Applications, v. 108, . (15/25124-0, 15/13834-2, 13/07296-2, 15/03654-7, 15/03567-7)
RANGEL, ANDRE L. R.; FALENTIN-DAUDRE, CELINE; ALVES DA SILVA PIMENTEL, BRUNA NATALIA; VERGANI, CARLOS EDUARDO; MIGONNEY, VERONIQUE; ALVES CLARO, ANA P. R.. Nanostructured titanium alloy surfaces for enhanced osteoblast response: A combination of morphology and chemistry. SURFACE & COATINGS TECHNOLOGY, v. 383, . (15/25124-0, 15/13834-2, 13/00317-4, 15/26273-9)
OLIVEIRA, LUCAS PORTELA; DE FOGGI, CAMILA CRISTINA; ALVES DA SILVA PIMENTEL, BRUNA NATALIA; ASSIS, MARCELO; ANDRES, JUAN; LONGO, ELSON; VERGANI, CARLOS EDUARDO. Increasing the photocatalytic and fungicide activities of Ag3PO4 microcrystals under visible-light irradiation. CERAMICS INTERNATIONAL, v. 47, n. 16, p. 22604-22614, . (15/13834-2, 13/07296-2, 19/13507-2, 17/12594-3)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
PIMENTEL, Bruna Natalia Alves da Silva. Avaliação da atividade antifúngica e citotoxicidade de microcristais de alfa vanadato de prata (α-AgVO3) sintetizados em diferentes temperaturas. 2017. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araraquara Araraquara.

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