{"id":87600,"date":"2018-03-10T00:12:25","date_gmt":"2018-03-10T00:12:25","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/aplicaciones-clinicas-de-la-relacion-entre-el-porcentaje-de-psa-libre-y-el-psa-total\/"},"modified":"2018-03-10T00:12:25","modified_gmt":"2018-03-10T00:12:25","slug":"aplicaciones-clinicas-de-la-relacion-entre-el-porcentaje-de-psa-libre-y-el-psa-total","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/aplicaciones-clinicas-de-la-relacion-entre-el-porcentaje-de-psa-libre-y-el-psa-total\/","title":{"rendered":"Aplicaciones clinicas de la relacion entre el porcentaje de psa libre y el psa total"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Carles Xavier Raventos Busquets <\/strong><\/h2>\n<p>La determinaci\u00f3n s\u00e9rica del ant\u00edgeno prost\u00e1tico espec\u00edfico(psa),ha permitido un mejor conocimiento y diagn\u00f3stico de la patolog\u00eda prost\u00e1tica. El descubrimiento de las isoformas del psa y la confirmaci\u00f3n que en la hiperplasia se produce una mayor proporci\u00f3n de psa libre, mientras que en c\u00e1ncer se produce mayormente psa conjugado con la a1-antiquimiotripsina, son las bases para proponer si el porcentaje de psa libre(ppsal) puede aumentar la especificidad de la mol\u00e9cula de psa.  en el trabajo se han realizado un total de 1269 determinaciones de psa total i psa libre mediante el metodo de radioinmunoensayo tandem-r psa y tandem-r free psa, recogidas entre los a\u00f1os 1996 y 1998.  inicialmente analizamos la existencia de diferencias entre los diferentes grupos de patolog\u00eda prostatica: hiperplasia benigna, hiperplasia benigna complicada, prostatitis y cancer. El porcentaje de psa libre era significativamente inferior en pacientes diagnosticados de c\u00e1ncer, sin encontrarse variaciones significativas entre los diferentes tipos de patolog\u00eda benigna.  por otro lado, analizamos la eficacia del porcentaje de psa libre en el diagn\u00f3stico de c\u00e1ncer, confirm\u00e1ndose su utilidad sobretodo en pacientes con tacto rectal normal y psa por encima de 4 ng\/ml.  Con un nivel de corte de 25% la sensibilidad era del 99.3% evitando un 14% de biopsias.  seguidamente, comparamos la eficacia entre la densidad de psa y el porcentaje de psa libre en el diagn\u00f3stico del c\u00e1ncer, siendo la sensibilidad de ambas pruebas muy parecidas en pacientes con tacto rectal normal y psa entre 4 y 10 ng\/ml. No obstante, la eficiencia del porcentaje parece superior al evitarse la ultrasonograf\u00eda transrectal para calcular el volumen prostatico.  tambi\u00e9n analizamos las variables que podian influir sobre el porcentaje de psa libre. En el global de pacientes \u00e9ste era influenciado por el tipo de patolog\u00eda prost\u00e1tica, la edad y el psa total. En cambio, en enfermos con tac<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Aplicaciones clinicas de la relacion entre el porcentaje de psa libre y el psa total<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Aplicaciones clinicas de la relacion entre el porcentaje de psa libre y el psa total <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Carles Xavier Raventos Busquets <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/11\/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>Juan Morote Robles<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: manuel Armengol carrasco <\/li>\n<li> De torres mateo Jos\u00e9 Antonio (vocal)<\/li>\n<li>eduardo Solsona narbon (vocal)<\/li>\n<li> Coromines torres Jos\u00e9 Mar\u00eda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Carles Xavier Raventos Busquets La determinaci\u00f3n s\u00e9rica del ant\u00edgeno prost\u00e1tico espec\u00edfico(psa),ha permitido un mejor conocimiento y diagn\u00f3stico [&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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