Data/hora: 03/06/2024 16:42:02

Provedor de dados: 	Brazilian Archives of Biology and Technology	
País: 	Brazil	
Título: 	Extract of the Bark of Bathysa cuspidataAttenuates the Development of Chemically-Induced Preneoplastic Colorectal Lesions in Rats	
Autores: 	Rosa,Damiana Diniz; Reis,Sandra Aparecida dos; Siqueira,Nathane Pais; Gonçalves,Reggiani Vilela; Machado,Alessandra Barbosa Ferreira; Tafuri,Natália Filardis; Leite,João Paulo Viana; Matta,Sérgio Luís Pinto da; Peluzio,Maria do Carmo Gouveia.	
Data: 	2015-10-01	
Ano: 	2015	
Palavras-chave: 	Bathysa cuspidata; Animal model; Oxidative stress; Aberrant crypt foci.	
Resumo: 	ABSTRACTThe aim of this study was to investigate the effect of the bark extractBathysa cuspidata on chemically induced preneoplastic colorectal lesions in Wistar rats. Forty male rats were randomly divided into four groups (n = 10 each): saline (control group, oral administration of saline solution 0.9%); dimethylsulfoxide (DMSO, vehicle control), B200 (treated with 200 mg/kg bark extract ofB. cuspidata), and B400 (treated with 400 mg/kg bark extract ofB. cuspidata). Administration of treatments was carried out by the gavage. The animals received four subcutaneous injections of 1,2-dimethylhydrazine (DMH, 40 mg/kg) in the initial two weeks of the experiment to induce preneoplastic colorectal lesions. After 15 weeks, the animals were euthanized and the presence of aberrant crypt foci (ACF), body weight, biochemical analyses, and oxidative stress markers were measured. The extract ofB. cuspidata decreased the levels of superoxide dismutase (SOD), but did not influence the levels of catalase (CAT), malondialdehyde (MDA), nitric oxide or protein carbonyl, compared with the saline group. The animals supplemented with a more concentratedB. cuspidata extract (B400) showed a significant reduction in the number of ACF in all the portions of the intestinal mucosa. The study demonstrated that the bark extract ofB. cuspidata at 400 mg/kg reduced the preneoplastic colorectal lesions in an animal model of colon cancer and that the effect could be dose-dependent.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000500732	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132015050228	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.58 n.5 2015	
Fonte: 	info:eu-repo/semantics/openAccess