| Texto completo | |
| Autor(es): |
Bernardo, Wagner Luis de Carvalho
;
Boriollo, Marcelo Fabiano Gomes
;
Tonon, Caroline Coradi
;
da Silva, Jeferson Junior
;
Oliveira, Mateus Cardoso
;
de Moraes, Fernando Cruz
;
Spolidorio, Denise Madalena Palomari
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FRONTIERS IN MICROBIOLOGY; v. 13, p. 22-pg., 2022-09-29. |
| Resumo | |
This study analyzed the antimicrobial and antibiofilm action and cytotoxicity of extract (HEScL) and silver nanoparticles (AgNPs-HEScL) from Syzygium cumini leaves. GC-MS, UV-Vis, EDX, FEG/SEM, DLS and zeta potential assays were used to characterize the extract or nanoparticles. Antimicrobial, antibiofilm and cytotoxicity analyses were carried out by in vitro methods: agar diffusion, microdilution and normal oral keratinocytes spontaneously immortalized (NOK-SI) cell culture. MICs of planktonic cells ranged from 31.2-250 (AgNPs-HEScL) to 1,296.8-10,375 mu g/ml (HEScL) for Actinomyces naeslundii, Fusobacterium nucleatum, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus mutans, Streptococcus oralis, Veillonella dispar, and Candida albicans. AgNPs-HEScL showed antibiofilm effects (125-8,000 mu g/ml) toward Candida albicans, Streptococcus mutans and Streptococcus oralis, and Staphylococcus aureus and Staphylococcus epidermidis. The NOK-SI exhibited no cytotoxicity when treated with 32.8 and 680.3 mu g/ml of AgNPs-HEScL and HEScL, respectively, for 5 min. The data suggest potential antimicrobial and antibiofilm action of HEScL, and more specifically, AgNPs-HEScL, involving pathogens of medical and dental interest (dose-, time- and species-dependent). The cytotoxicity of HEScL and AgNPs-HEScL detected in NOK-SI was dose- and time-dependent. This study presents toxicological information about the lyophilized ethanolic extract of S. cumini leaves, including their metallic nanoparticles, and adds scientific values to incipient studies found in the literature. (AU) | |
| Processo FAPESP: | 22/05454-9 - Desenvolvimento de sensores eletroquímicos descartáveis e fotoanodos fabricados com materiais semicondutores nanoestruturados para a determinação e degradação de disruptores endócrinos |
| Beneficiário: | Fernando Cruz de Moraes |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |