Título:	Evaluation of the genotoxicity induced by the fungicide fenarimol in mammalian and plant cells by use of the single-cell gel electrophoresis assay.
Autoria:	POLI, P. MELLO, M. A. de BUSCHINI, A. CASTRO, V. L. S. S. de RESTIVO, F. M. ROSSI, C. ZUCCHI, T. M. A. D.
Afiliação:	P. POLI, Dipartimento di Genetica Antropologia Evoluzione, Università degli Studi di Parma, Italia; M. A. de MELLO, Depto. de Parasitologia, Instituto de Ciˆencias Biomédicas, USP; A. BUSCHINI, Dipartimento di Genetica Antropologia Evoluzione, Università degli Studi di Parma, Italia; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; F. M. RESTIVO, Dipartimento di Genetica Antropologia Evoluzione, Università degli Studi di Parma, Italia; C. ROSSI, Dipartimento di Genetica Antropologia Evoluzione, Università degli Studi di Parma, Italia; T. M. A. D. ZUCCHI, Depto de Parasitologia, Instituto de Ci?encias Biomédicas, USP.
Ano de publicação:	2003
Referência:	Mutation Research, Amsterdam, v. 540, p. 57-66, 2003.
Conteúdo:	Fenarimol, a systemic pyrimidine carbinol fungicide, is considered to be not genotoxic or weakly genotoxic, although the available toxicological data are controversial and incomplete. Our results obtained in vitro with leukocytes of two different rodent species (rat and mouse) show that fenarimol affects DNA, as detected by the single-cell gel electrophoresis (SCGE, Comet) assay. This fungicide is able to induce DNA damage in a dose-related manner, with significant effectiveness at 36 nM, but without significant interspecies differences. Simultaneous exposure of rat leukocytes to fenarimol (36-290nM) and a model genotoxic compound (50 ?g/ml bleomycin) produced a supra-additive cytotoxic and genotoxic effect. This supports previous findings suggesting possible co-toxic, co-mutagenic, cancer-promoting and co-carcinogenic potential of fenarimol, and modification of the effects of other xenobiotics found to be influenced by this agrotoxic chemical, with consequent different toxicological events. The potential for DNA strand breaks to act as a biomarker of genetic toxicity in plants in vivo was also considered, in view of the fact that higher plants represent reliable sensors in an ecosystem. Significant DNA breakage was observed in the nuclei of Impatiens balsamina leaves after in vivo treatment with fenarimol (145 nM, 1 h). More than 50% of the cells showed such DNA damage.
Thesagro:	Análise química Fungicida Eletroforese Toxidez
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMA)