{"id":34729,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sintesis-de-melatonina-en-la-retina-de-xenopus-laevis\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"sintesis-de-melatonina-en-la-retina-de-xenopus-laevis","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/sintesis-de-melatonina-en-la-retina-de-xenopus-laevis\/","title":{"rendered":"Sintesis de melatonina en la retina de xenopus laevis."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Valenciano Gonzalez Ana Isabel <\/strong><\/h2>\n<p>La inyecci\u00f3n ocular de \u00e1cido ka\u00ednico es un m\u00e9todo adecuado para la obtenci\u00f3n de retinas de xenopus laevis enriquecidas en fotorreceptores, siendo estas preparaciones un buen modelo para el estudio de la s\u00edntesis de melatonina en la retina. En los fotorreceptores de xenopus laevis, la actividad tph muestra un ritmo diario paralelo a los ritmos de actividad nat y melatonina ocular. El ciclo luz-oscuridad dirige los principales sistemas de comunicaci\u00f3n intracelular de los fotorreceptores de xenopus laevis. La entrada de calcio a trav\u00e9s de los canales tipo l desencadena una serie de procesos dependientes del complejo calcio-calmodulina, como una estimulaci\u00f3n de la camkii y de la adenilato ciclasa tipo i. Camkii fosforina directamente la tph, activ\u00e1ndola. La activaci\u00f3n de la adenilato ciclasa aumenta el contenido de camp e induce una fosforilaci\u00f3n de la tph por la pka. La dopamina a trav\u00e9s de receptores d2 regula negativamente la actividad tph de los fotorreceptores, mimetizando el efecto de la luz. Los niveles extracelulares de la adenosina regulan la s\u00edntesis de melatonina activando a trav\u00e9s de receptores a2 las actividades tph y nat y mimetizando el efecto de la oscuridad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sintesis de melatonina en la retina de xenopus laevis.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sintesis de melatonina en la retina de xenopus laevis. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Valenciano Gonzalez Ana Isabel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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> Alonso Gomez Angel Luis<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Mercedes Alonso Bedate <\/li>\n<li> Guerrero Montavez Juan  Miguel (vocal)<\/li>\n<li>Michael Ivvone Paul (vocal)<\/li>\n<li>Pedro Abreu Gonzalez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Valenciano Gonzalez Ana Isabel La inyecci\u00f3n ocular de \u00e1cido ka\u00ednico es un m\u00e9todo adecuado para la obtenci\u00f3n [&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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