{"id":88639,"date":"2018-03-10T00:13:38","date_gmt":"2018-03-10T00:13:38","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/tanicitos-de-la-region-nucleo-arcuato-eminencia-media-capacidad-de-transporte-y-funcion-de-barrera\/"},"modified":"2018-03-10T00:13:38","modified_gmt":"2018-03-10T00:13:38","slug":"tanicitos-de-la-region-nucleo-arcuato-eminencia-media-capacidad-de-transporte-y-funcion-de-barrera","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/tanicitos-de-la-region-nucleo-arcuato-eminencia-media-capacidad-de-transporte-y-funcion-de-barrera\/","title":{"rendered":"Tanicitos de la regi\u00f3n n\u00facleo arcuato-eminencia media: capacidad de transporte y funci\u00f3n de barrera"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Peruzzo Leischner Bruno Fortunato <\/strong><\/h2>\n<p>Se ha realizado un estudio sobre los tanicitos beta-1 y beta-2 de la eminencia media de la rata con el objeto de analizar el sustrato morfol\u00f3gico de una posible secreci\u00f3n tanicitaria, la capacidad de transporte de estas c\u00e9lulas y su participaci\u00f3n en las barreras existentes en el hipot\u00e1lamo mediobasal.  para ello se utiliz\u00f3 la microscop\u00eda electr\u00f3nica convencional, la histoqu\u00edmica de lectinas a nivel \u00f3ptico y ultraestructural, la administraci\u00f3n de trazadores en el ventr\u00edculo lateral y la cisterna magna, el cultivo organot\u00edpico de eminencia media en presencia de wga, as\u00ed como la detecci\u00f3n inmunocitoqu\u00edmica del transportador de glucosa glut-i. La histoqu\u00edmica con las lectinas demuestra que las terminaciones basales de todos los tanicitos contienen formaciones tubulares y granulares  que son positivas a wga y con-a y negativas a lfa. las estructuras citadas y el material que contienen pueden representar el sustrato de una secreci\u00f3n tanicitaria. Por otro lado, el gran n\u00famero de inclusiones lip\u00eddicas acumuladas en los tanicitos beta-1 y su relaci\u00f3n con las cisternas de ret\u00edculo liso apoyan la idea de que estos tanicitos secretan compuestos lip\u00eddicos. En cuanto a la capacidad de transporte de los tanicitos beta, la administraci\u00f3n por v\u00eda ventricular de las lectinas wga y lfa y la ferritina cati\u00f3nica demuestra que existen diferencias en la din\u00e1mica del transporte por los tanicitos ya que, en los beta-1, las lectinas persisten durante m\u00e1s tiempo en su superficie apical y en sus terminaciones basales. Se postula que las diferencias en el transporte son el reflejo de diferencias funcionales entre los dos tipos de tanicitos beta. Los resultados obtenidos indican que, tanto los tanicitos beta-1 como los beta-2, son capaces de absorber y transportar sustancias desde el ventr\u00edculo hacia los espacios perivasculares de los vastos porta, as\u00ed como de secretar desde sus pies terminales hacia estos espacios: por el contrario, los<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Tanicitos de la regi\u00f3n n\u00facleo arcuato-eminencia media: capacidad de transporte y funci\u00f3n de barrera<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Tanicitos de la regi\u00f3n n\u00facleo arcuato-eminencia media: capacidad de transporte y funci\u00f3n de barrera <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Peruzzo Leischner Bruno Fortunato <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/01\/2001<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Pedro Amat Mu\u00f1oz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: luciano Mu\u00f1oz barragan <\/li>\n<li> Del brio leon M\u00aa angeles (vocal)<\/li>\n<li>pedro Riera rovira (vocal)<\/li>\n<li> Garc\u00eda s\u00e1nchez M\u00aa helena (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Peruzzo Leischner Bruno Fortunato Se ha realizado un estudio sobre los tanicitos beta-1 y beta-2 de la 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