Data/hora: 01/06/2024 09:20:18

Provedor de dados: | 74
País: | Brazil
Título: | In vivo evaluation of the antimutagenic and antigenotoxic effects of β-glucan extracted from Saccharomyces cerevisiae in acute treatment with multiple doses
Autores: | Oliveira,Rodrigo Juliano; Salles,Maria José Sparça; Silva,Ariane Fernanda da; Kanno,Tatiane Yumi Nakamura; Lourenço,Ana Carolina dos Santos; Leite,Véssia da Silva; Matiazi,Hevenilton José; Pesarini,João Renato; Ribeiro,Lúcia Regina; Mantovani,Mário Sérgio.
Data: | 2013-01-01
Ano: | 2013
Palavras-chave: | Β-glucan; Cyclophosphamide; Antimutagenicity; Antigenotoxicity; Mice.
Resumo: | Ample evidence suggests that cancer is triggered by mutagenic damage and diets or supplements capable of reducing such incidences can be related to the prevention of neoplasy development or to an improvement in life quality of patients who undergo chemotherapy. This research aimed to evaluate the antimutagenic and antigenotoxic activity of β-glucan. We set up 8 experimental groups: control (Group 1), cyclophosphamide (Group 2), Groups 3-5 to assess the effect of β-glucan administration, and Groups 6-8 to evaluate the association between cyclophosphamide and β-glucan. The intraperitonial concentrations of β-glucan used were 100, 150 and 200 mg/kg. Micronucleus and comet assays showed that within the first week of treatment β-glucan presented a damage reduction rate between 100-62.04% and 94.34-59.52% for mutagenic and genotoxic damages, respectively. This activity decreased as the treatment was extended. During the sixth week of treatment antimutagenicity rates were reduced to 59.51-39.83% and antigenotoxicity was not effective. This leads to the conclusion that the efficacy of β-glucan in preventing DNA damage is limited when treatment is extended, and that its use as a chemotherapeutic adjuvant need to be better clarified.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300017
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572013005000028
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.36 n.3 2013
Fonte: | info:eu-repo/semantics/openAccess