{"id":80221,"date":"2018-03-10T00:03:54","date_gmt":"2018-03-10T00:03:54","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/papel-de-los-proteoglicanos-sulfatados-en-el-desarrollo-temprano-del-cristalino-en-embriones-de-pollo-estudio-experimental-in-vivo\/"},"modified":"2018-03-10T00:03:54","modified_gmt":"2018-03-10T00:03:54","slug":"papel-de-los-proteoglicanos-sulfatados-en-el-desarrollo-temprano-del-cristalino-en-embriones-de-pollo-estudio-experimental-in-vivo","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/papel-de-los-proteoglicanos-sulfatados-en-el-desarrollo-temprano-del-cristalino-en-embriones-de-pollo-estudio-experimental-in-vivo\/","title":{"rendered":"Papel de los proteoglicanos sulfatados en el desarrollo temprano del cristalino en embriones de pollo. estudio experimental \u00abin vivo\u00bb."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Cristina Martin Llorente <\/strong><\/h2>\n<p>Con el fin de comprobar el patr\u00f3n de distribuci\u00f3n de dos proteoglicanos sulfatados, el condroit\u00edn sulfato proteoglicano (cspg) y el heparan sulfato proteoglicano (hspg), as\u00ed como el papel que juegan en el desarrollo temprano del esbozo cristaliniano en embriones de pollo, se realizaron t\u00e9cnicas de inmunofluorescencia y de invecci\u00f3n de inhibidores de la s\u00edntesis de estos proteoglicanso (beta-d-xil\u00f3sido) y de enzimas espec\u00edficos (condroitinasa y heparinasa).  estos dos proteoglicanos est\u00e1n presentes durante las etapas tempranas del desarrollo del esbozo cristaliniano y presentan un patr\u00f3n de expresi\u00f3n diferencial.  la presencia de ambosen la matr\u00edz interpuesta entre placa cristaliniana y ves\u00edcula-copa \u00f3ptica, sugiere su participaci\u00f3n en la invaginaci\u00f3n de la placa cristaliniana.  la presencia de cspg en el material de cubierta apical parece estar relacionado con los procesos de inavaginaci\u00f3n y fusi\u00f3n entre celulas epiteliales y fibras cristalinianas.  el incremento de cspg intercelular en las fases de placa y ves\u00edcula cristaliniana parece estar relacionado con fenomenos de flexibilizaci\u00f3n epitelial durante la invaginaci\u00f3n.  la presencia de fgf-2 en la cavidad cristaliniana y en la retina neural, podr\u00eda ser la causa de la diferenciaci\u00f3n inicial de las celulas del epitelio posterior.  la expresi\u00f3n de cspg intercelular tras la diferenciaci\u00f3n inicial de las fibras primarias queda restringida al epitelio anterior y parece estar relacionada con procesos de migraci\u00f3n celular.  el hspg asociado a la parte anterior de la c\u00e1psula, parece estar relacionado con el proceso de replicaci\u00f3n celular.  nuestros resultados demuestran que hay una relaci\u00f3n directa entre el hspg de la parte posterior de la c\u00e1psula y el proceso de diferenciaci\u00f3n de las fibras primarias del cristalino.  la ausencia total de hspg provoca la degeneraci\u00f3n y muerte de dichas c\u00e9lulas.  las alteraciones es<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Papel de los proteoglicanos sulfatados en el desarrollo temprano del cristalino en embriones de pollo. estudio experimental \u00abin vivo\u00bb.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Papel de los proteoglicanos sulfatados en el desarrollo temprano del cristalino en embriones de pollo. estudio experimental \u00abin vivo\u00bb. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Cristina Martin Llorente <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Valladolid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/06\/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>Angel Gato Casado<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: enrique Barbosa ayucar <\/li>\n<li> Martinez alvarez m. concepcion (vocal)<\/li>\n<li>Francisco Javier Agudo bernal (vocal)<\/li>\n<li>Jos\u00e9 Carretero gonzalez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Cristina Martin Llorente Con el fin de comprobar el patr\u00f3n de distribuci\u00f3n de dos proteoglicanos sulfatados, el [&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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