Data/hora: 15/06/2024 21:35:31

Provedor de dados: | 65
País: | Brazil
Título: | Amino acids and carbohydrates absorption by Na+-dependent transporters in the pyloric ceca of Hoplias malabaricus (Erythrinidae)
Autores: | Vieira,Vania Lucia Pimentel; Baldisserotto,Bernardo.
Data: | 2001-10-01
Ano: | 2001
Palavras-chave: | Hoplias malabaricus; Amino acids; Carbohydrates; Intestinal absorption; Na+-dependent transporters; Pyloric ceca.
Resumo: | Information about amino acids and carbohydrate absorption in fish is important to formulate an adequate diet to obtain optimal growth. Therefore, the objective of this study was to investigate if Na+-dependent transporters are involved on the absorption of glycine, L-glutamine, L-leucine, L-lysine, L-proline, L-alanine, and the carbohydrates fructose and glucose in the pyloric ceca of Hoplias malabaricus. The pyloric ceca were mounted in a system of continuous perfusion "in vitro". Amino acids and carbohydrates were placed on the mucosal side at concentrations of 10, 20, and 40mM. The serosal side of the pyloric ceca was positive in relation to the mucosal side. The addition of glycine, L-glutamine, L-leucine, L-lysine, L-proline (all tested concentrations), and glucose (at concentrations of 20 and 40mM) increased the positivity of the serosal side, indicating the presence of Na+-dependent transporters in the absorption of these substances. L-alanine and fructose did not change the positivity of the serosal side. The pyloric ceca seem to be the main site of nutrient absorption in the digestive tract of H. malabaricus.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000500009
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782001000500009
Formato: | text/html
Fonte: | Ciência Rural  v.31 n.5 2001
Fonte: | info:eu-repo/semantics/openAccess