In vitro cytotoxicity and genotoxicity of composite mixtures of natural rubber and leather residues used for textile applications.
Toxicol Ind Health
; 33(6): 478-486, 2017 Jun.
Article
en En
| MEDLINE
| ID: mdl-27811159
ABSTRACT
A novel composite material has been developed from natural rubber and leather waste, and a corresponding patent has been filed. This new material may be incorporated into textile and footwear products. However, as leather waste contains chromium, the biocompatibility of this new material and its safety for use in humans must be investigated. The aim of the present study was to investigate the presence of chromium in this new material, determine the amount of each form of chromium present (trivalent or hexavalent), and evaluate the potential cytotoxic and genotoxic effects of the novel composite in two cell lines. The cellular viability was quantified using the MTT3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide reduction method and neutral red uptake assay, and genotoxic damage was analyzed using the comet assay. Our findings indicated that the extracts obtained from the composite were severely cytotoxic to both cell lines tested, and additionally highly genotoxic to MRC-5 cells. These biological responses do not appear to be attributable to the presence of chromium, as the trivalent form was predominantly found to be present in the extracts, indicating that hexavalent chromium is not formed during the production of the novel composite. The incorporation of this new material in applications that do not involve direct contact with the human skin is thus indicated, and it is suggested that the chain of production of this material be studied in order to improve its biocompatibility so that it may safely be used in the textile and footwear industries.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Goma
/
Textiles
/
Daño del ADN
/
Cromo
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Toxicol Ind Health
Asunto de la revista:
MEDICINA OCUPACIONAL
/
TOXICOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Brasil