{"id":54346,"date":"2018-03-09T22:42:04","date_gmt":"2018-03-09T22:42:04","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-neuroquimica-de-las-areas-visuales-primarias-del-pez-cebra-en-condiciones-normales-y-en-ciclopia-inducida-por-etanol\/"},"modified":"2018-03-09T22:42:04","modified_gmt":"2018-03-09T22:42:04","slug":"caracterizacion-neuroquimica-de-las-areas-visuales-primarias-del-pez-cebra-en-condiciones-normales-y-en-ciclopia-inducida-por-etanol","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/histologia-animal\/caracterizacion-neuroquimica-de-las-areas-visuales-primarias-del-pez-cebra-en-condiciones-normales-y-en-ciclopia-inducida-por-etanol\/","title":{"rendered":"Caracterizacion neuroquimica de las areas visuales primarias del pez cebra en condiciones normales y en ciclopia inducida por etanol"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Francisco Javier Arenzana Sanagerico <\/strong><\/h2>\n<p>El consumo de etanol durante la gestaci\u00f3n expone a los fetos a desarrollar el s\u00edndrome alcoh\u00f3lico fetal con la aparici\u00f3n de retraso mental y graves alteraciones estructurales del sistema nervioso. Entre dichos defectos se encuentran el desarrollo de ojos fusionados en posici\u00f3n central (ciclopia), y ausencia de la porci\u00f3n ventral del cerebro anterior, lo que influye en la posterior organizaci\u00f3n de la conexi\u00f3n retinoencef\u00e1lica. La exposici\u00f3n a etanol de embriones de pez cebra induce la aparici\u00f3n de ciclopia en los mismos, siendo \u00e9sta dependiente de la concentraci\u00f3n de etanol a la que son sometidos y de la estirpe de pez cebra. Para este estudio hemos utilizado cuatro cepas de pez cebra: ab (wild-type, zebrafish international resource center, eugene, or), ek (ekkwill wild-type, massachusetts general hospital, charlestown, ma), gl (golden longfin, ekkwill waterlife resources, gibsonton, fl) y tl (tuebingen long fin, massachusetts general hospital, boston, ma). Tras el tratamiento con 1.5% de etanol la mayor proporci\u00f3n de embriones c\u00edclopes fueron de la estirpe ek y adem\u00e1s sobreviv\u00edan hasta el final del periodo larvario. En los ejemplares c\u00edclopes se altera la laminaci\u00f3n de los principales componentes de la v\u00eda visual, ya que la retina presenta menor n\u00famero de capas y el techo \u00f3ptico carece de estratificaci\u00f3n. Adem\u00e1s la exposici\u00f3n embrionaria a etanol produce un retraso en la diferenciaci\u00f3n neuroqu\u00edmica de las diferentes poblaciones celulares de la retina neural. As\u00ed, la expresi\u00f3n de algunos marcadores moleculares (reelina, col\u00edn acetiltransferasa y glutamina sintetasa) se detecta en estadios m\u00e1s tard\u00edos con respecto a la porci\u00f3n dorsal. El tratamiento con etanol induce la expresi\u00f3n de pax2 en c\u00e9lulas de la retina y de tirosina hidroxilasa en c\u00e9lulas del techo \u00f3ptico e inhibe la expresi\u00f3n de prote\u00edna \u00e1cida fibrilar glial en procesos de la retina y del nervio \u00f3ptico, la de col\u00edn acetiltransferasa en todas la regiones encef\u00e1licas<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizacion neuroquimica de las areas visuales primarias del pez cebra en condiciones normales y en ciclopia inducida por etanol<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizacion neuroquimica de las areas visuales primarias del pez cebra en condiciones normales y en ciclopia inducida por etanol <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Francisco Javier Arenzana Sanagerico <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Salamanca<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 26\/07\/2006<\/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>Rosario Arevalo Arevalo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jose Aijon noguera <\/li>\n<li>agustin Gonzalez gallegos (vocal)<\/li>\n<li>arantxa Tabernero urbieta (vocal)<\/li>\n<li>Manuel angel Pombal  diego (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Francisco Javier Arenzana Sanagerico El consumo de etanol durante la gestaci\u00f3n expone a los fetos a desarrollar [&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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