{"id":84236,"date":"2018-03-10T00:08:29","date_gmt":"2018-03-10T00:08:29","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/deteccion-e-incidencia-de-anomala%c2%adas-cromosomicas-en-espermatozoides-humanos\/"},"modified":"2018-03-10T00:08:29","modified_gmt":"2018-03-10T00:08:29","slug":"deteccion-e-incidencia-de-anomala%c2%adas-cromosomicas-en-espermatozoides-humanos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/deteccion-e-incidencia-de-anomala%c2%adas-cromosomicas-en-espermatozoides-humanos\/","title":{"rendered":"Detecci\u00f3n e incidencia de anomal\u00edas cromos\u00f3micas en espermatozoides humanos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Joan Blanco Rodr\u00edguez <\/strong><\/h2>\n<p>Las t\u00e9cnicas de hibridaci\u00f3n in situ fluorescente aplicadas sobre n\u00facleos de espermatozoides humanos permiten su caracterizaci\u00f3n citogen\u00e9tica y por tanto, permiten determinar el riesgo de transmisi\u00f3n de una anomal\u00eda cromos\u00f3mica a la descendencia.  la aplicaci\u00f3n de esta metodolog\u00eda en individuos control ha puesto de manifiesto que los mecanismo que origian gametos portadores de aneuploid\u00edas afectan preferentemente a algunos cromosomas, concretamente el cromosoma 21 y los cromosomas secuales.  por otro lado, la t\u00e9cnica permite el an\u00e1lisis de indivudos de riesgo, es decir aquellos que por sus particularidades pueden presentar un riesgo incrementado de transmitir una anomal\u00eda cromos\u00f3mica a la descendencia.  los padres de individuos afectos del s\u00edndrome de down en los cuales el cormosoma extra es de origen paterno, presentan un incremento significativo de aneuploid\u00edas para el cormosoma 21.  en individuos portadores de naom\u00e1lias cromos\u00f3micas estructurales, la proporci\u00f3n de los genotipos resultantes de cada tipo de segregaci\u00f3n no se ajusta a la proporcion 1:1 esperada. Para algunas reogranizaciones, el riesgo se puede ver incrementado por la presencia de efectos intercromos\u00f3micos.  en individuos afectos del s\u00edndrome de klinefelter, nuestros resultados confirman la incapacidad de la l\u00ednea celular 47, xxy de iniciar la meiosi. el incremento de espermatozoides portadores de anomal\u00edas num\u00e9ricas para los cromosomas secuales se podr\u00eda explicar por el desarrollo de al meiosis en un ambiente testicular anormal, provocando un incremento de segregaciones anormales en las c\u00e9lulas diploides 46,xy presentes en el tejido testicular.  en individuos de cariotipo 47,xyy, algunas c\u00e9lulas con esta dotaci\u00f3n cromos\u00f3mica tienen la capacidad de iniciar la meiosis. Los datos en estos individuos sugieren la existencia de un bloqueo de las c\u00e9lulas aneuploides en el estadio de espermatocito primario, secundario o en el estadio de esper<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Detecci\u00f3n e incidencia de anomal\u00edas cromos\u00f3micas en espermatozoides humanos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Detecci\u00f3n e incidencia de anomal\u00edas cromos\u00f3micas en espermatozoides humanos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Joan Blanco Rodr\u00edguez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 13\/04\/2000<\/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>Francesa Vidal Dom\u00ednguez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Estop graells anna Mar\u00eda <\/li>\n<li>Manuel Gil salom (vocal)<\/li>\n<li>montserrat Boada plana (vocal)<\/li>\n<li>carles Gim\u00e9nez sevilla (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Joan Blanco Rodr\u00edguez Las t\u00e9cnicas de hibridaci\u00f3n in situ fluorescente aplicadas sobre n\u00facleos de espermatozoides humanos permiten [&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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