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Registros recuperados: 5
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Cytotoxicity and genotoxicity of Agaricus blazei methanolic extract fractions assessed using gene and chromosomal mutation assays Genet. Mol. Biol.
Bellini,Marilanda Ferreira; Cabrioti,Leonardo Neves; Terezan,Ana Paula; Jordão,Berenice Quinzani; Ribeiro,Lúcia Regina; Mantovani,Mário Sérgio.
Functional food investigations have demonstrated the presence of substances that could be beneficial to human health when consumed. However, the toxic effects of some substances contained in foods have been determined. Reported medicinal and nutritive properties have led to the extensive commercialization of the basidiomycete fungi Agaricus blazei Murrill (sensu Heinemann), also known as Agaricus brasiliensis Wasser et al., Agaricus subrufescens Peck or the Brazilian medical mushroom (BMM). Different methanolic extract fractions (ME) of this mushroom were submitted to the cytokinesis-block micronucleus (CBMN) clastogenic assay and the hypoxanthine-guanine phosphoribosyl transferase locus (HGPRT) assay for gene mutation, both using Chinese hamster ovary...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agaricus blazei; Hgprt locus; Micronucleus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100021
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Effects of β-glucan polysaccharide revealed by the dominant lethal assay and micronucleus assays, and reproductive performance of male mice exposed to cyclophosphamide Genet. Mol. Biol.
Oliveira,Rodrigo Juliano; Pesarini,João Renato; Salles,Maria José Sparça; Kanno,Tatiane Yumi Nakamura; Lourenço,Ana Carolina dos Santos; Leite,Véssia da Silva; Silva,Ariane Fernanda da; Matiazi,Hevenilton José; Ribeiro,Lúcia Regina; Mantovani,Mário Sérgio.
β-glucan is a well-known polysaccharide for its chemopreventive effect. This study aimed to evaluate the chemopreventive ability of β-glucan in somatic and germ cells through the dominant lethal and micronucleus assays, and its influence on the reproductive performance of male mice exposed to cyclophosphamide. The results indicate that β-glucan is capable of preventing changes in DNA in both germ cells and somatic ones. Changes in germ cells were evaluated by the dominant lethal assay and showed damage reduction percentages of 46.46% and 43.79% for the doses of 100 and 150 mg/kg. For the somatic changes, evaluated by micronucleus assay in peripheral blood cells in the first week of treatment, damage reduction percentages from 80.63-116.32% were found. In...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mutation; Post-implantation losses; Chemoprevention; Micronucleus; Nulliparous females.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572014000100017
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Evaluation of extracts from Coccoloba mollis using the Salmonella/microsome system and in vivo tests Genet. Mol. Biol.
Tsuboy,Marcela Stefanini; Marcarini,Juliana Cristina; Ferreira,Dalva Trevisan; Ferraz,Elisa Raquel Anastácio; Chequer,Farah Maria Drumond; Oliveira,Danielle Palma de; Ribeiro,Lúcia Regina; Mantovani,Mário Sérgio.
The common everyday use of medicinal plants is an ancient, and still very widespread practice, whereby the need for studies on their possible toxicity and mutagenic properties. The species Coccoloba mollis has been much used in phytotherapy, mainly in cases involving loss of memory and stress. In order to investigate its genotoxic and mutagenic potential, ethanolic extracts from the leaves and roots underwent Salmonella/microsome assaying (TA98 and TA100 strains, with and without exogenous metabolism - S9), besides comet and micronucleus tests in vivo.There was no significant increase in the number of revertants/plate of Salmonella strains in any of the analyzed root-extract concentrations, although the extract itself was extremely toxic to the Salmonella...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medicinal plants; Coccoloba mollis; Ames test; In vivo comet assay; In vivo micronucleus assay; Polygonaceae.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300027
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Genotoxic and antigenotoxic effects of organic extracts of mushroom Agaricus blazei Murrill on V79 cells Genet. Mol. Biol.
Guterres,Zaira da Rosa; Mantovani,Mário Sérgio; Eira,Augusto Ferreira da; Ribeiro,Lúcia Regina; Jordão,Berenice Quinzani.
Agaricus blazei Murrill, popularly known as the sun mushroom, is a native mushroom in SP, Brazil, that has been widely used in the treatment of cancer and many other pathologies in different parts of the world. A water-soluble protein-polysaccharide complex (1 -> 6)beta-D-glucan has been isolated from its fruiting body that showed immune-modulation activity. From organic extracts, linoleic acid has been isolated and determined to be the main substance with antimutagenic activity. Using both the micronucleus (MN) and comet (single cell microgel electrophoresis) assays, this study determined the genotoxic and antigenotoxic potential of A. blazei (AB) obtained from commercial sources or the following strains: a) strains AB 97/29 (young and sporulated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agaricus blazei; Micronuclei; Comet assay; V79 cells; Mushroom extracts.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300022
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In vivo evaluation of the antimutagenic and antigenotoxic effects of β-glucan extracted from Saccharomyces cerevisiae in acute treatment with multiple doses Genet. Mol. Biol.
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.
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Β-glucan; Cyclophosphamide; Antimutagenicity; Antigenotoxicity; Mice.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300017
Registros recuperados: 5
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