{"id":16124,"date":"2018-03-09T09:03:36","date_gmt":"2018-03-09T09:03:36","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-de-protea%c2%adnas-del-plasma-seminal-ovino-implicadas-en-el-mantenimiento-de-la-viabilidad-espermatica\/"},"modified":"2018-03-09T09:03:36","modified_gmt":"2018-03-09T09:03:36","slug":"estudio-de-protea%c2%adnas-del-plasma-seminal-ovino-implicadas-en-el-mantenimiento-de-la-viabilidad-espermatica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/estudio-de-protea%c2%adnas-del-plasma-seminal-ovino-implicadas-en-el-mantenimiento-de-la-viabilidad-espermatica\/","title":{"rendered":"Estudio de prote\u00ednas del plasma seminal ovino implicadas en el mantenimiento de la viabilidad esperm\u00e1tica"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Beatriz Barrios Bardav\u00edo <\/strong><\/h2>\n<p>Los componentes del plasma seminal, particularmente las prote\u00ednas, desempe\u00f1an un papel crucial en todos los procesos relacionados con la capacidad fecundante des espermatozoide. Por ello, el estudio de su p\u00e9rdida, redistribuci\u00f3n y capacidad protectora frente al da\u00f1o de membrana causado por el choque t\u00e9rmico, puede ser utilizado para la puesta a punto de protocolos m\u00e1s eficaces de congelaci\u00f3n, con objeto de aumentar la difusi\u00f3n de la i.A., Todav\u00eda muy limitada en la especie ovina. Del presente trabajo se obtienen las siguientes conclusiones:  * la criopreservaci\u00f3n de espermatozoides ovinos conlleva una p\u00e9rdida de prote\u00ednas de membrana, ya en el proceso de refrigeraci\u00f3n, y que no logra evitarse mediante el uso de los aditivos criprotectores com\u00fanmente utilizados.  * las pps ovino poseen capacidad protectora y reparadora frente al da\u00f1o producido por el choque t\u00e9rmico por fr\u00edo en la membrana esperm\u00e1tica, recuperando parcialmente su integridad de membrana. Dicha capacidad recuperadora var\u00eda estacionalmente y parece residir en dos prote\u00ednas de 14 (rsvp-14) y 20 kda (rsvp-20), ya que adem\u00e1s la abundancia de ambas en el ps var\u00eda paralelamente de forma estacional.  * ambas prote\u00ednas se sintetizan exclusivamente en las c\u00e9lulas epiteliales de las ves\u00edculas seminales y se secretan mediante mecanismos mecrocrino y apocrino.  * en la superficie esperm\u00e1tica la rsvp-14 se localiza preferentemente en el dominio acosomal y pieza intermedia, y la rsvp-20 en acrosoma y flagelo completo. El \u00abcold-shock\u00bb y la criopreservaci\u00f3n provocan cambios en la distribuci\u00f3n de ambas prote\u00ednas (p\u00e9rdida de su localizaci\u00f3n acrosomal y en la pieza intermedia, y redistribuci\u00f3n por toda la cabeza y segmento ecuatorial). Las dos prote\u00ednas se liberan en gran medida de la membrana en la criopreservaci\u00f3n, siendo especialmente sensible la prote\u00edna de rsvp-14.  * la capacitaci\u00f3n y la reacci\u00f3n acros\u00f3mica provocan una p\u00e9rdida parcial, especia<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio de prote\u00ednas del plasma seminal ovino implicadas en el mantenimiento de la viabilidad esperm\u00e1tica<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio de prote\u00ednas del plasma seminal ovino implicadas en el mantenimiento de la viabilidad esperm\u00e1tica <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Beatriz Barrios Bardav\u00edo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/03\/2002<\/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>Jos\u00e9 \u00e1lvaro Cebri\u00e1n P\u00e9rez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: anselmo Gracia molina <\/li>\n<li> Rodr\u00edguez gil joan enric (vocal)<\/li>\n<li>Jos\u00e9 Juli\u00e1n Garde lopez-brea (vocal)<\/li>\n<li>Jos\u00e9 Luis Alabart  alvarez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Beatriz Barrios Bardav\u00edo Los componentes del plasma seminal, particularmente las prote\u00ednas, desempe\u00f1an un papel crucial en todos [&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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