{"id":42944,"date":"2018-03-09T09:45:07","date_gmt":"2018-03-09T09:45:07","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/vitamina-a-y-litiasis-renal\/"},"modified":"2018-03-09T09:45:07","modified_gmt":"2018-03-09T09:45:07","slug":"vitamina-a-y-litiasis-renal","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/vitamina-a-y-litiasis-renal\/","title":{"rendered":"Vitamina a y litiasis renal"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ramon Garcia Gonzalez <\/strong><\/h2>\n<p>Objetivos: 1.- Establecer la relaci\u00f3n entre deficit de vitamina a y litiasis renal. 1.1.- Sobre la alteraci\u00f3n de los parametros urinarios implicados: ph, citratos, fosfatos, magnesio (ii), zinc(ii), calcio (ii) y glicosaminoglicanos 1.2.- Establecer el efecto preservador que ejerce el fitato en orina en la litiasis oxaloc\u00e1lcica. Material y metodos: .-Para el objetivo 1, se utilizaron 64 ratas macho de la raza wistar que se distribuyeron en dos grandes grupos de dos edades distintas: 2 meses y otro de 5 meses y 2 semanas, estos grupos a su vez distribuyeron en grupos homogeneos seg\u00fan la dieta: dieta control, dieta deficiente en vitamina a y dieta deficiente en vitamina a y enriquecida en tartrato sodico. Para el objetivo 2 se usaron 47 ratas macho de la raza wistar que constituyeron un grupo control con dieta estandar, otro que recibi\u00f3 un suplemento de fitato, otro con suplemento de zinc y otro con suplemento de zinc y fitato, posteriormente se suplementaron las anteriores dietas con etilenglicol y cloruro amonico. Se determinaron los citados parametros en orina. La concentracion de vitamina a y e en sangre e higado. La concentracion de zn y mg en distintos organos y tejidos.  conclusiones: las ratas con dieta deficiente en vitamina a presentaron mayor predisposici\u00f3n a la urolitiasis, mayor afectaci\u00f3n del epitelio de la papila renal y valores superiores de vitamina e en sangre. La suplementaci\u00f3n de la dieta con fitato dio lugar a una mayor excreci\u00f3n de filato en orina que evit\u00f3 la formaci\u00f3n y desarrollo de urolitos de oxalato c\u00e1lcico sobre la papila cuando se compar\u00f3 con el grupo que no recibi\u00f3 dicha suplementaci\u00f3n en fitato.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Vitamina a y litiasis renal<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Vitamina a y litiasis renal <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ramon Garcia Gonzalez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 21\/05\/1999<\/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>Felix Grases Freixedas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Andreu Palou Oliver <\/li>\n<li> Ruiz Marcellan  Francisco Javier (vocal)<\/li>\n<li>Elisenda Amat Rosell (vocal)<\/li>\n<li>Antonia Costa Bauza (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ramon Garcia Gonzalez Objetivos: 1.- Establecer la relaci\u00f3n entre deficit de vitamina a y litiasis renal. 1.1.- [&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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