Sodium pumps in the Malpighian tubule of Rhodnius sp.
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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2000
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| author | Celso Neves Caruso |
| author_facet | Celso Neves Caruso |
| contents | Sodium pumps in the Malpighian tubule of Rhodnius sp. Celso Neves Caruso Aníbal Lopes Gil Multidisciplinaria (Ciencias Naturales y Exactas) Na+ ATPase adenosine fluid secretion (Na+ + K+)ATPase Malpighian tubule of Rhodnius sp. express two sodium pumps: the classical ouabain-sensitive (Na+ +K+)ATPase and an ouabain-insensitive, furosemide-sensitiveNa+-ATPase. In insects, 5-hydroxitryptamineis a diuretic hormone released during meals. It inhibits the (Na+ +K+)ATPase and Na+-ATPase activitiesindicating that these enzymes are involved in fluid secretion. Furthermore, in Rhodnius neglectus, proximalcells of Malpighian tubule exposed to hyperosmotic medium, regulate their volume through a mechanismcalled regulatory volume increase. This regulatory response involves inhibition of the (Na+ + K+)ATPaseactivity that could lead to accumulation of active osmotic solute inside the cell, influx of water and returnto the normal cell volume. Adenosine, a compound produced in stress conditions, also inhibits the (Na+ +K+)ATPase activity. Taken together these data indicate that (Na++K+)ATPase is a target of the regulatorymechanisms of water and ions transport responsible for homeostasis in Rhodnius sp. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772314 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.72 |
| format | Artículo científico |
| id | redalyc_32772314 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Sodium pumps in the Malpighian tubule of Rhodnius sp. Celso Neves Caruso Multidisciplinaria (Ciencias Naturales y Exactas) Na+ ATPase adenosine fluid secretion (Na+ + K+)ATPase Sodium pumps in the Malpighian tubule of Rhodnius sp. Celso Neves Caruso Aníbal Lopes Gil Multidisciplinaria (Ciencias Naturales y Exactas) Na+ ATPase adenosine fluid secretion (Na+ + K+)ATPase Malpighian tubule of Rhodnius sp. express two sodium pumps: the classical ouabain-sensitive (Na+ +K+)ATPase and an ouabain-insensitive, furosemide-sensitiveNa+-ATPase. In insects, 5-hydroxitryptamineis a diuretic hormone released during meals. It inhibits the (Na+ +K+)ATPase and Na+-ATPase activitiesindicating that these enzymes are involved in fluid secretion. Furthermore, in Rhodnius neglectus, proximalcells of Malpighian tubule exposed to hyperosmotic medium, regulate their volume through a mechanismcalled regulatory volume increase. This regulatory response involves inhibition of the (Na+ + K+)ATPaseactivity that could lead to accumulation of active osmotic solute inside the cell, influx of water and returnto the normal cell volume. Adenosine, a compound produced in stress conditions, also inhibits the (Na+ +K+)ATPase activity. Taken together these data indicate that (Na++K+)ATPase is a target of the regulatorymechanisms of water and ions transport responsible for homeostasis in Rhodnius sp. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772314 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.3 Vol.72 |
| title | Sodium pumps in the Malpighian tubule of Rhodnius sp. |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Na+ ATPase adenosine fluid secretion (Na+ + K+)ATPase |
| url | https://www.redalyc.org/articulo.oa?id=32772314 |