{"id":62098,"date":"2018-03-09T22:49:59","date_gmt":"2018-03-09T22:49:59","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/carnitine-in-the-neonatal-period-physiological-evaluation-and-clinical-implications\/"},"modified":"2018-03-09T22:49:59","modified_gmt":"2018-03-09T22:49:59","slug":"carnitine-in-the-neonatal-period-physiological-evaluation-and-clinical-implications","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/carnitine-in-the-neonatal-period-physiological-evaluation-and-clinical-implications\/","title":{"rendered":"Carnitine in the neonatal period: physiological evaluation and clinical implications"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Roser Pons Rodriguez <\/strong><\/h2>\n<p>En este estudio se presentan los valores en sangre de carnitina  de una muestra grande y homogenea de neonatos.  Las determinaciones de carnitina se obtuvieron con la tecnica  de \u00abtandem-mass\u00bb espectrometria (ms-ms).  Se obtuvieron los valores normales de carnitina en neonatos  a termino y en prematuros, se analizo su relacion  con varias variables clinicas (peso al nacer, edad de gestacion, sexo), y se valoro la evolucion de la concentracion de carnitina durante los primeros dias de vida.   Tambien se comparo la tecnica  ms-ms con la tecnica radioenzimatica para la determinacion de carnitina.  los principales resultados de este estudio son los siguientes:   -los valores de carnitina total y carnitina  libre en prematuros son mas elevados que en neonatos a termino, mientras que la acilcarnitina y la relacion acilcarnitina\/carnitina libre es mas elevada en neonatos a termino.   -la carnitina libre es mas alta en neonatos immaduros (24-27 semanas de gestacion) y  se reduce gradualmente hasta que se alcanza la madurez a las 37 semanas de gestacion; mientras que la acilcarnitina y la relacion acilcarnitina\/carnitina libre aumenta gradualmente hasta  que se alcanza la madurez de la gestacion.  -la concetracion de carnitina es mas elevada en varones que en hembras.   -en neonatos a termino y prematuros los valores de carnitina no se asocian a  la edad de gestacion.  -en neonatos a termino y prematuros la relacion acilcarnitina\/carnitina libre se correlaciona positivamente con el peso al nacer; mientras que la carnitina  libre se correlaciona negativamente con el peso al nacer en prematuros.   -en neonatos a termino todas las fracciones de carnitina  aumentan durante las primeras 24 horas de vida, despues se mantienen constantes hasta el cuarto dia de vida y la acilcarnitina  disminuye significativamente el quinto dia de vida, mientras que la carnitina libre se mantiene constante.    -los valores de carnitina obtenidos por ms-ms se correlacionan bien con los valore<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Carnitine in the neonatal period: physiological evaluation and clinical implications<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Carnitine in the neonatal period: physiological evaluation and clinical implications <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Roser Pons Rodriguez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 18\/12\/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> De Vivo Darryl C<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Antonio Carrascosa Lezcano <\/li>\n<li>Antonia Ribes Rubio (vocal)<\/li>\n<li>Rafael Jimenez Gonzalez (vocal)<\/li>\n<li>Alfons Macaya Ruiz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Roser Pons Rodriguez En este estudio se presentan los valores en sangre de carnitina de una [&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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