{"id":60663,"date":"2018-03-09T22:48:29","date_gmt":"2018-03-09T22:48:29","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/virulencia-resistencia-y-elementos-geneticos-moviles-en-serotipos-no-prevalentes-de-salmonella-enterica\/"},"modified":"2018-03-09T22:48:29","modified_gmt":"2018-03-09T22:48:29","slug":"virulencia-resistencia-y-elementos-geneticos-moviles-en-serotipos-no-prevalentes-de-salmonella-enterica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/microbiologia-clinica\/virulencia-resistencia-y-elementos-geneticos-moviles-en-serotipos-no-prevalentes-de-salmonella-enterica\/","title":{"rendered":"Virulencia, resistencia y elementos geneticos moviles en serotipos no prevalentes de salmonella enterica"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Noelia Martinez Alvarez <\/strong><\/h2>\n<p>Las salmonelas no-tifoideas que causan actualmente infecciones en seres humanos son frecuentemente epid\u00e9micas y resistentes a los antimicrobianos (r), adem\u00e1s de virulentas (v). La evoluci\u00f3n de las bacterias en cuanto a la adquisici\u00f3n de determinantes-v y\/o -r se debe, fundamentalmente, a la incorporaci\u00f3n, a menudo secuencial, de piezas de adn, cuya combinaci\u00f3n origina nuevos elementos gen\u00e9ticos, que quedan inmediatamente sometidos a la selecci\u00f3n natural en un ambiente cambiante. Los genes-v y -r pueden estar aislados, formando peque\u00f1as agrupaciones (islotes) y\/o en agrupaciones mayores (islas gen\u00f3micas o de patogenicidad) y pueden ser de localizaci\u00f3n cromos\u00f3mica o plasm\u00eddica. Los genes-r, una vez seleccionados, pueden mantenerse en las bacterias originarias y su descendencia o bien diseminarse entre bacterias m\u00e1s o menos relacionadas a trav\u00e9s de los elementos gen\u00e9ticos m\u00f3viles (egms) entre los que destacan el sistema integr\u00f3n-casete g\u00e9nica, los transposones, los pl\u00e1smidos y las islas gen\u00f3micas de resistencia. en la presente tesis se llevaron a cabo estudios de epidemiolog\u00eda molecular en 176 aislamientos de salmonella enterica pertenecientes a tres serotipos no prevalentes, aunque causantes de alertas epidemiol\u00f3gicas: hadar, brandenburg y ohio. Se determin\u00f3 el impacto epidemiol\u00f3gico de los mismos, identificando los tipos end\u00e9micos y prevalentes en el principado de asturias y su posible presencia en otras \u00e1reas geogr\u00e1ficas. Los subtipos fueron trazados mediante an\u00e1lisis de macrorrestricci\u00f3n gen\u00f3mica-pfge y genotipos-r y -v. Como ejemplo tenemos que los subtipos prevalentes de hadar se pueden considerar end\u00e9micos en espa\u00f1a y uno de ellos caus\u00f3 un brote nacional asociado a la salsa de pollos asados comerciales en 2005. Los estudios de resistencia revelaron un amplio porcentaje de cepas con resistencia m\u00faltiple (rm) y una correlaci\u00f3n entre \u00e9sta y la presencia de egms. En los tres serotipos se identificaron pl\u00e1smidos-r, de tama\u00f1o va<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Virulencia, resistencia y elementos geneticos moviles en serotipos no prevalentes de salmonella enterica<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Virulencia, resistencia y elementos geneticos moviles en serotipos no prevalentes de salmonella enterica <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Noelia Martinez Alvarez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 28\/09\/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> Mendoza Fernandez Mar\u00eda  Del Carmen<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jorge Blanco \u00e1lvarez <\/li>\n<li>beatriz Guerra roman (vocal)<\/li>\n<li>Mar\u00eda  aurora Echeita sarrionandia (vocal)<\/li>\n<li> Martin martin Mar\u00eda  cruz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Noelia Martinez Alvarez Las salmonelas no-tifoideas que causan actualmente infecciones en seres humanos son frecuentemente epid\u00e9micas y [&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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