Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

TEMPO-Oxidized Cellulose Nanofibers In Vitro Cyto-genotoxicity Studies

Full text
Author(s):
Pizi Candido, Amanda de Lima [1] ; Fregonezi, Nathalia Ferreira [1, 2] ; Carvalho, Antonio Jose Felix [3] ; Trovatti, Eliane [1, 2] ; Resende, Flavia Aparecida [1, 2]
Total Authors: 5
Affiliation:
[1] Univ Araraquara UNIARA, Dept Biol Sci & Hlth, Araraquara, SP - Brazil
[2] Carvalho, Antonio Jose Felix, Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Sao Carlos, SP, Brazil.Pizi Candido, Amanda de Lima, Univ Araraquara UNIARA, Dept Biol Sci & Hlth, Araraquara, SP - Brazil
[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mat Engn, Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: BIONANOSCIENCE; JUN 2020.
Web of Science Citations: 0
Abstract

Chemically oxidized cellulose, with 2,2,6,6-tetramethylpiperidine-1-oxyl reagent (TEMPO), has been considered, in the last decade, as one of the most attractive renewable materials for advanced applications, especially in the biomedical field. However, little information about its toxicological effects is available in the literature. The mutagenic potential and cytotoxicity tests reveal, at the first level of evidence, the toxicological effect of the materials, aiming at their safe use in the medical field. Therefore, the main goal of this study was to evaluate the mutagenic activity of TEMPO-oxidized cellulose nanofibers (CNF) by the Ames test and its cytotoxic potential by MTT assay. The Ames test was carried out using the changed strains ofSalmonella typhimuriumTA98, TA97a, TA100, and TA102, and the cytotoxicity tests were performed using the normal cell line GM07492A and human metabolizing cells (HepG2). The results showed that the modified cellulose did not increase the number of revertant colonies ofS. typhimurium, indicating no mutagenic effect, and a low cytotoxic effect was found when compared with their respective negative controls. The results of the mutagenicity and cytotoxicity tests suggest it is harmless, supporting, at the first level of evidence, its safety potential to be used in the health and medical fields. (AU)

FAPESP's process: 17/16278-9 - Study of the genotoxicological potential and permeation assay with Caco-2 cells of metallic complexes with promising biological activities
Grantee:Flávia Aparecida Resende Nogueira
Support type: Regular Research Grants