{"id":13864,"date":"2018-03-09T09:00:19","date_gmt":"2018-03-09T09:00:19","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/mecanismos-implicados-en-los-trastornos-de-la-absorcion-intestinal-de-l-leucina-inducidos-por-el-lipopolisacarido-de-escherichia-coli\/"},"modified":"2018-03-09T09:00:19","modified_gmt":"2018-03-09T09:00:19","slug":"mecanismos-implicados-en-los-trastornos-de-la-absorcion-intestinal-de-l-leucina-inducidos-por-el-lipopolisacarido-de-escherichia-coli","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/mecanismos-implicados-en-los-trastornos-de-la-absorcion-intestinal-de-l-leucina-inducidos-por-el-lipopolisacarido-de-escherichia-coli\/","title":{"rendered":"Mecanismos implicados en los trastornos de la absorci\u00f3n intestinal de l-leucina inducidos por el lipopolisac\u00e1rido de escherichia coli"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Beatriz Abad Ba\u00f1uelos <\/strong><\/h2>\n<p>Las infecciones bacterianas alteran las funciones gastrointestinales. el lipopolisac\u00e1rido (lps), un constituyente de la pared de las bacterias gram negativas es un agente causante de sepsis. Este agente infeccioso es capaz de producir alteraciones digestivas relacionados con la motilidad y la absorci\u00f3n intestinal. El objetivo del presente trabajo fue estudiar el efecto del lps sobre la absorci\u00f3n intestinal de l-leucina, tanto si la endotoxina era a\u00f1adida directamente al tejido (efecto local) como si era administrada intravenosamente al animal (efecto sist\u00e9mico). Se utiliz\u00f3 yeyuno de conejo como modelo experimental. Los resultados mostraron que el lps a\u00f1adido directamente al tejido produce una reducci\u00f3n del transporte mediado de l-leucina localizado en el lado mucosal. Este efecto podr\u00eda ser debido a una reducci\u00f3n en la afinidad del amino\u00e1cido por la prote\u00edna transportadora y a una inhibici\u00f3n de la actividad atpasa na+\/k+. En este proceso podr\u00edan estar implicados mediadores intracelulares relacionados con el calcio, la prote\u00edna kinasa c y el complejo calcio-calmodulina. Por otra parte, la administraci\u00f3n intravenosa al animal de lps produjo una inhibici\u00f3n del transporte intestinal na+ -dependiente de l-leucina del borde mucosal. Este efecto podr\u00eda ser causado por una reducci\u00f3n de la aparente capacidad de transporte y una disminuci\u00f3n de la actividad atpasa na+\/k+ estando relacionado con una acci\u00f3n secretagoga del tnfa sobre el intestino implicando a mediadores como el no y las prostaglandinas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Mecanismos implicados en los trastornos de la absorci\u00f3n intestinal de l-leucina inducidos por el lipopolisac\u00e1rido de escherichia coli<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Mecanismos implicados en los trastornos de la absorci\u00f3n intestinal de l-leucina inducidos por el lipopolisac\u00e1rido de escherichia coli <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Beatriz Abad Ba\u00f1uelos <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Navarra<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 17\/11\/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>Mar\u00eda  Jes\u00fas Rodriguez Yoldi<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Francisco Ponz piedrafita <\/li>\n<li>Mar\u00eda del pilar Lostao crespo (vocal)<\/li>\n<li>M\u00aa divina Murillo lopez de silanes (vocal)<\/li>\n<li>Ana isabel Alcalde herrero (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Beatriz Abad Ba\u00f1uelos Las infecciones bacterianas alteran las funciones gastrointestinales. el lipopolisac\u00e1rido (lps), un constituyente de la [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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