Data/hora: 11/06/2024 01:27:21

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Rhodnius prolixus Malpighian tubules and control of diuresis by neurohormones	
Autores: 	Martini,Sabrina V.; Nascimento,Suzete B.; Morales,Marcelo M.	
Data: 	2007-03-01	
Ano: 	2007	
Palavras-chave: 	Malpighian tubules; Rhodnius prolixus; Hormones; Fluid secretion.	
Resumo: 	Rhodnius prolixus Malpighian tubules (MTs) are a good model for fluid and ion secretion studies in view of the dramatic postprandial diuresis, which follows its massive blood meals. Ingestion of a blood meal equals to 10-12 times their initial body mass, leads to rapid activation of high output by excretory system, which eliminates 40-50% of the fluid mass. Secretion of ions and water is stimulated 1000-fold by serotonin and diuretic hormone. These hormones cooperate synergistically to activate adenylate cyclase activity from MTs cells, which increase the level of intracellular cAMP. The anti-diuretic hormones have also an important role in the fluid maintenance of Rhodnius prolixus. Several hours after insect feeding occurs a reduction in urine flow, that has been thought to result from a decreased diuretic hormone release or from a novel mechanism of anti-diuresis involving insect cardioacceleratory peptide 2b (CAP2b) and cyclic GMP. In this article it is discussed how the hormone regulation of fluid transport is done in Rhodnius prolixus MTs.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100011	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/S0001-37652007000100011	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.79 n.1 2007	
Fonte: 	info:eu-repo/semantics/openAccess