Detalhes do Documento

The protective effect of ß-carotene on genotoxicity induced by cyclophosphamide

Autor(es): Salvadori, Daisy M.F. ; Ribeiro, Lúcia R. ; Oliveira, Marília D.M. ; Pereira, Carlos A.B. ; Beçak, Willy

Data: 2013

Origem: OASISbr

Assunto(s): Antimutagenesis; ß-Carotene; Chromosome aberration; Cyclophosphamide

Texto completo. Acesso restrito. p. 237–244The influence of ß-carotene on the clastogenicity of the indirect-acting mutagen cyclophosphamide (CPA) was investigated in mice, in vivo, for the induction of chromosome aberrations in bone marrow cells (BM). ß-Carotene (0.5, 1.0, 2.0, 5.0, 10, 25, 50, 100 and 200 mg/kg) was administered by gavage for 5 consecutive days. 4 h after the last treatment with ß-carotene, the mice were injected intraperitoneally with CPA, and the BM cells were fixed after 16, 24 and 32 h for the evaluation of the frequency of chromosome aberrations. The results showed that ß-carotene was effective in reducing chromosomal damage induced by CPA with the increase of its concentration up to a level after which this effect was not observed. This anticlastogenicity was better detected when the cells were fixed at 32 h, although a tendency in reducing the CPA clastogenicity was already observed at 16 and 24 h. Our results suggest that ß-carotene provides significant protection against the genotoxicity of CPA, although no dose-effect relationship on the frequencies of cells with chromosomal aberrations was observed.
Tipo de Documento Artigo
Idioma Inglês
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