| Registro completo |
| Provedor de dados: |
Anais da ABC (AABC)
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| País: |
Brazil
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| Título: |
Rhodnius prolixus Malpighian tubules and control of diuresis by neurohormones
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| Autores: |
Martini,Sabrina V.
Nascimento,Suzete B.
Morales,Marcelo M.
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| Data: |
2007-03-01
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| Ano: |
2007
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| Palavras-chave: |
Malpighian tubules
Rhodnius prolixus
Hormones
Fluid secretion
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000100011
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| Editor: |
Academia Brasileira de Ciências
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| Relação: |
10.1590/S0001-37652007000100011
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| Formato: |
text/html
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| Fonte: |
Anais da Academia Brasileira de Ciências v.79 n.1 2007
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| Direitos: |
info:eu-repo/semantics/openAccess
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