Data/hora: 01/06/2024 06:04:21

Provedor de dados: 	52	
País: 	Brazil	
Título: 	An aqueous extract of Vitex agnus castus alters the labeling of blood constituents with technetium-99m	
Autores: 	Costa,Maria Regina de Macedo; Ribeiro,Camila Godinho; Santos-Filho,Sebastião David; Neves,Rosane de Figueiredo; Fonseca,Adenilson de Souza da; Bernardo-Filho,Mario; Catanho,Maria Teresa Jansem de Almeida.	
Data: 	2007-09-01	
Ano: 	2007	
Palavras-chave: 	Oxidant properties; Plasma proteins; Red blood cells; Technetium-99m; Vitex agnus-castus.	
Resumo: 	The development of experimental assays to study properties of herbal medicine is worthwhile. Vitex agnus castus (VAC) is utilized in popular medicine and some actions have been attributed to its extract. Blood cells (BC) and plasma proteins are labeled with technetium-99m (Tc-99m) and have been used in nuclear medicine, as in basic research. This procedure uses a reducing agent and stannous ion is utilized. There are reports that drugs can alter this labeling process. The aim of this work was to evaluate the influence of an aqueous extract of VAC on the labeling of blood constituents with Tc-99m. Blood was incubated with VAC, stannous chloride and Tc-99m, as sodium pertechnetate, and centrifuged. Samples of BC and plasma were separated, aliquots of BC and plasma were also precipitated with trichloroacetic acid to obtain soluble and insoluble fractions and the percentage of radioactivity (%ATI) was determined. The results show a statistical (p&lt;0.05) alteration in the %ATI on blood compartments and on the insoluble fractions of plasma and BC. Probably, this extract would have chemical compounds with oxidant properties.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000600023	
Editor: 	Instituto de Tecnologia do Paraná - Tecpar	
Relação: 	10.1590/S1516-89132007000600023	
Formato: 	text/html	
Fonte: 	Brazilian Archives of Biology and Technology  v.50 n.spe 2007	
Fonte: 	info:eu-repo/semantics/openAccess