{"id":57066,"date":"2018-03-09T22:44:50","date_gmt":"2018-03-09T22:44:50","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/mecanismos-de-autorregulacion-del-sa%c2%adndrome-de-hiperestimulacion-ovarica\/"},"modified":"2018-03-09T22:44:50","modified_gmt":"2018-03-09T22:44:50","slug":"mecanismos-de-autorregulacion-del-sa%c2%adndrome-de-hiperestimulacion-ovarica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/mecanismos-de-autorregulacion-del-sa%c2%adndrome-de-hiperestimulacion-ovarica\/","title":{"rendered":"Mecanismos de autorregulaci\u00f3n del s\u00edndrome de hiperestimulaci\u00f3n ov\u00e1rica."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Marcos Puig M\u00aa Beatriz <\/strong><\/h2>\n<p>Introduccion.El s\u00edndrome de hiperestimulaci\u00f3n ov\u00e1rica (sho) es un fen\u00f3meno poco frecuente, pero potencialmente muy grave, que aparece casi siempre como complicaci\u00f3n iatr\u00f3gena del empleo de gonadotropinas para el desarrollo folicular m\u00faltiple en pacientes sometidas a tra.Desconocemos su fisiopatolog\u00eda, pero es la administraci\u00f3n de la hcg ex\u00f3gena en la culminaci\u00f3n del ciclo que dar\u00eda  lugar al sho temprano,  o la hcg end\u00f3gena procedente del sincitiotrofoblasto de las mujeres que quedan gestantes  que dar\u00eda lugar al sho tard\u00edo, la que desencadena el s\u00edndrome en sus dos formas de presentaci\u00f3n.Entre el 0.1-2% de las pacientes desarrollan formas severas del sho  (navot et al, 1992).Se han propuesto diversos mediadores de la hcg que ser\u00edan los responsables del aumento de permeabilidad vascular que caracteriza al s\u00edndrome y que es el responsable de la extravasaci\u00f3n del l\u00edquido y su ac\u00famulo en un tercer espacio en forma de ascitis, hidr\u00f3torax e incluso anasarca.De entre ellos parece jugar un papel muy importante el sistema vegf ya que son conocidas sus propiedades vasoactivas, en concreto su acci\u00f3n sobre el receptor incrementa la permeabilidad capilar y favorece la salida de l\u00edquido rico en prote\u00ednas al tercer espacio. Tambi\u00e9n induce la proliferaci\u00f3n de las c\u00e9lulas endoteliales y la angiog\u00e9nesis in vivo.Se trata de un sistema formado por una serie de ligandos y receptores con funciones distintas seg\u00fan sus uniones. El m\u00e1s importante es el vegf a con varias isoformas (neufeld et al, 1999) siendo las m\u00e1s importantes la isoforma 121 y 165 por ser espec\u00edficamente expresadas en el ovario. El receptor del vegf pertenece a la familia de los receptores tyrosin-kinasa (de vries et al, 1992) y se han descrito fundamentalmente dos receptores de membrana endoteliales, el vegfr-1 tambi\u00e9n llamado flt-1 y el vegfr-2 tambi\u00e9n llamado flk-1\/kdr (waltenberg et al, 1994; shalaby et al , 1995). El vegfr-1 tambi\u00e9n se produce como una forma soluble (svegfr-1) ac<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Mecanismos de autorregulaci\u00f3n del s\u00edndrome de hiperestimulaci\u00f3n ov\u00e1rica.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Mecanismos de autorregulaci\u00f3n del s\u00edndrome de hiperestimulaci\u00f3n ov\u00e1rica. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Marcos Puig M\u00aa Beatriz <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Universitat de val\u00e9ncia (estudi general)<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/02\/2007<\/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>Antonio Pellicer Martinez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: lorenzo Abad Martinez <\/li>\n<li>Carlos Sim\u00f3n vall\u00e9s (vocal)<\/li>\n<li>alfonso Herruzo nalda (vocal)<\/li>\n<li>roberto Matorras weinig (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Marcos Puig M\u00aa Beatriz Introduccion.El s\u00edndrome de hiperestimulaci\u00f3n ov\u00e1rica (sho) es un fen\u00f3meno poco frecuente, pero potencialmente [&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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