|
|
|
|
|
| Güez,Camila Martins; Waczuk,Emily Pansera; Pereira,Karina Braccini; Querol,Marcus Vinícius Morini; Rocha,João Batista Teixeira da; Oliveira,Luís Flávio Souza de. |
| The use of plants as a source of palliative or cure for pathological conditions is quite common worldwide. Xanthium spinosum (Asteraceae), popularly known in Brazil as 'espinho de carneiro', is an annual weed from South America, which has been used by empiric medicine to treat neoplasias. Owing to the extensive use of the above-mentioned plant and to the lack of reports about the real effects of its infusion, current study evaluated the genotoxic potential of its aqueous extract at concentrations 0.02 g L-1, 0.1 g L-1 and 0.2 g L-1 by fish micronucleus test and by comet human leukocytes assay. The micronucleus test featured at least 50 cells with micronuclei to every 2,000 cells scored, as a mutagenic parameter. The comet assay was used as a parameter for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Xanthium spinosum/pharmacognosy; Xanthium spinosum/aqueous extract; Xanthium spinosum/genotoxicity; Fish micronucleus assay; Comet assay. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000300013 |
| |
|
|
| Kozloski,Gilberto Vilmar; Rocha,João Batista Teixeira da; Ciocca,Maria de Lourdes Santorio. |
| The visceral system (liver and portal-drained viscera) represents an interface between diet and the animal, and it acts as the main site of regulation of nutrients that are used for maintenance, growth, lactation, reproduction, and physical activities of animals. However the functions carried out by visceral organs have, however, a significant energetic cost and are influenced by a variety of factors, such as the level of feed intake and diet composition, among others. As a result, variable quantities of substances are metabolized by them and, thus, the pattern and the quantity of nutrients available to the peripheral tissues can be quite different from those absorbed at the intestinal lumen. Probably, the major source of variation in the efficiency of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Portal- drained viscera; Liver; Metabolism; Energy; Efficiency. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000500030 |
| |
|
|
| Kozloski,Gilberto Vilmar; Ciocca,Maria de Lourdes Santorio; Sanchez,Luis Maria Bonnecarrère; Rocha,João Batista Teixeira da. |
| Foram utilizados nove terneiros da raça Holandesa (139 ± 2,4kg), fistulados no duodeno, em um delineamento experimental completamente casualizado para estudar o efeito da suplementação com diferentes fontes protéicas (2% de uréia ou 10% de farinha de carne na dieta total) de dietas ricas em concentrado (milho e farelo de soja) sobre o local e extensão da digestão do alimento, em condições de consumo ad libitum. A relação volumoso:concentrado das dietas foi de 30:70. A digestibilidade ruminal e total da matéria seca, matéria orgânica e nitrogênio, assim como o fluxo duodenal de nitrogênio microbiano e residual do alimento, e a eficiência da síntese protéica microbiana foram semelhantes nos dois tratamentos (P>0,10). A digestibilidade ruminal do amido... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Consumo; Digestibilidade; Farinha de carne; Síntese proteica bacteriana; Uréia. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781999000200025 |
| |
|
|
| Golombieski,Ronaldo Medeiros; Graichen,Daniel Ângelo Sgranzerla; Rocha,João Batista Teixeira da; Valente,Vera Lúcia da Silva; Loreto,Élgion Lúcio da Silva. |
| Selenium is an important dietary micronutrient and an essential component of selenoproteins and the active sites of some enzymes, although at high concentrations it is toxic. We investigated diphenyl diselenide ((C6H5)2Se2 ) for its effects on the developmental stages of Drosophila melanogaster and found that in the larval and pupae stages the toxic threshold for this compound when added to the banana-agar medium on which the larva were fed was 350 µmol. In adult flies, fed on the same media, there were no observable toxic effects below 500 µmol but there were toxic effects above 600 µmol, indicating that adult flies were more resistant to selenium intoxication. In larvae, a when diphenyl diselenide was present above the toxic threshold there was increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gene activation; Hsp83 gene; Selenium; Diphenyl diselenide. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000100022 |
| |
|
|
|
