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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Absence of genotoxic effects of the coumarin derivative 4-methylesculetin in vivo and its potential chemoprevention against doxorubicin-induced DNA damage

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Fedato, Rafael Palhano [1] ; Maistro, Edson Luis [1, 2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista UNESP, Programa Posgrad Biol Geral & Aplicada, Inst Biociencias, Sao Paulo - Brazil
[2] Univ Estadual Paulista UNESP, Fac Filosofia & Ciencias, Dept Fonoaudiol, BR-17525900 Marilia, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF APPLIED TOXICOLOGY; v. 34, n. 1, p. 33-39, JAN 2014.
Citações Web of Science: 9

4-Methylesculetin (4-ME) is a synthetic derivative of coumarin that displays a potent reactive oxygen species (ROS) scavenger and metal chelating agent and therefore has been produced to help reduce the risk of human disease. The main objective of this study was to investigate the in vivo genotoxicity of 4-ME and initially to verify its potential antigenotoxicity on doxorubicin (DXR)-induced DNA damage. Different doses of 4-ME (500, 1000 and 2000 mg kg(-1) body weight) were administered by gavage only or with a simultaneous intraperitoneal (i.p.) injection of DXR (80 mg kg(-1)). The following endpoints were analyzed: DNA damage in peripheral blood, liver, bone marrow, brain and testicle cells according to an alkaline (pH > 13) comet assay and micronucleus induction in bone marrow cells. Cytotoxicity was assessed by scoring polychromatic (PCE) and normochromatic (NCE) erythrocytes (PCE/NCE ratio). No differences were observed between the negative control and the groups treated with a 4-ME dose for any of the endpoints analyzed, indicating that it lacks genotoxic and cytotoxic effects. Moreover, 4-ME demonstrated protective effects against DXR-induced DNA damage at all tested doses and in all analyzed cell types, which ranged from 34.1% to 93.3% in the comet assay and 54.4% to 65.9% in the micronucleus test. Copyright (c) 2012 John Wiley \& Sons, Ltd. (AU)

Processo FAPESP: 10/07577-3 - Investigação do potencial genotóxico do artesunato, da artemisinina, da 4-hidroxicumarina esculetina: implantação da metodologia de mutagênese in vitro
Beneficiário:Edson Luis Maistro
Linha de fomento: Auxílio à Pesquisa - Regular