Data/hora: 02/06/2024 00:52:20

Provedor de dados: 	74	
País: 	Brazil	
Título: 	Genotoxic potential of the latex from cotton-leaf physicnut (Jatropha gossypiifolia L.)	
Autores: 	de Almeida,Pedro Marcos; de Sousa Araújo,Silvany; Marin-Morales,Maria Aparecida; Benko-Iseppon,Ana Maria; Brasileiro-Vidal,Ana Christina.	
Data: 	2015-03-01	
Ano: 	2015	
Palavras-chave: 	Allium cepa test; Medicinal plant; Plant latex; Genotoxicity evaluation.	
Resumo: 	Jatropha gossypiifolia L. (Euphorbiaceae), popularly known as cotton-leaf physicnut, is a milky shrub notable for its medicinal properties. The present study aimed to evaluate the toxic, cytotoxic and genotoxic effects of the latex of J. gossypiifolia, using Allium cepa L. as test system. Seeds of A. cepa were exposed to five concentrations of the latex (1.25; 2.5; 5; 10 and 20 mL/L) in order to evaluate parameters of toxicity (evaluation of root growth), cytotoxicity (mitotic index frequency) and genotoxicity (frequency of chromosome alterations). The latex showed a significant decrease in root mean growth value as well as mitotic index for the tested concentrations, except for 1.25 mL/L, when compared to results from the negative control. The 1.25, 2.5 and 5 mL/L concentrations induced significant chromo-some adherences, C-metaphases and/or chromosome bridges, as genotoxic effects. The significant frequency of chromosome bridges also indicated mutagenic potential for chromosomes of J. gossypiifolia as discussed in the paper. Considering that the latex is used in popular therapies, and that the test system A. cepa presents good correlation with tests carried out in mammals, it can be pointed out that its use for medicinal purposes may be harmful to human health especially if ingested.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572015000100093	
Editor: 	Sociedade Brasileira de Genética	
Relação: 	10.1590/S1415-475738120140162	
Formato: 	text/html	
Fonte: 	Genetics and Molecular Biology  v.38 n.1 2015	
Fonte: 	info:eu-repo/semantics/openAccess