{"id":16674,"date":"2018-03-09T09:04:24","date_gmt":"2018-03-09T09:04:24","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/mecanismos-de-resistencia-a-antibioticos-macrolidos-lincosamidas-y-estreptograminas-en-streptococcus-y-enterococcus\/"},"modified":"2018-03-09T09:04:24","modified_gmt":"2018-03-09T09:04:24","slug":"mecanismos-de-resistencia-a-antibioticos-macrolidos-lincosamidas-y-estreptograminas-en-streptococcus-y-enterococcus","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/mecanismos-de-resistencia-a-antibioticos-macrolidos-lincosamidas-y-estreptograminas-en-streptococcus-y-enterococcus\/","title":{"rendered":"Mecanismos de resistencia a antibi\u00f3ticos macr\u00f3lidos, lincosamidas y estreptograminas en streptococcus y enterococcus"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ar\u00e1nzazu Portillo Barrio <\/strong><\/h2>\n<p>La investigaci\u00f3n objeto de esta tesis doctoral se centr\u00f3 en la caracterizaci\u00f3n de los mecanismos de resistencia a antibi\u00f3ticos macr\u00f3lidos, liconsomidas y estreptograminas (mls) en dos g\u00e9neros bacterianos: streptococcus y enterococcus.  objetivos  1,- caracterizar los mecanismos de resistencia a antibi\u00f3ticos mls en aislamientos de streptococcus de diferentes especies (s.Pyogenes, s.Agalactiae, streptococcus beta-hemol\u00edticos del grupo c y grupo g y s.Pneumoniae) en la rioja (hospital san mil\u00e1n, periodo 1996-2001). Para ello se estudi\u00f3 la distribuci\u00f3n de fenotipos de resistencia, as\u00ed como los mecanismos de resistencia asociados a dichos fenotipos y su evoluci\u00f3n temporal, y se analiz\u00f3 as\u00ed la distribuci\u00f3n clonal de aislamientos resistentes a eritromicina.  2,- caracterizar los mecanismos de resistencia a antibi\u00f3ticos mls en aislamientos de enterococcus de diferentes especies (e.Faecalis, c.Faecium, e.Durans, e.Avium, e.Hirae, e.Gallinarum y e.Casselifavus). En este caso, se investigaron los fenotipos de resistencia, as\u00ed como los mecanismos de resistencia asociados a dichos fenotipos y se caracteriz\u00f3 un nuevo gen que fue denominado msrc.  conclusiones  se detectaron altas tasas de resistencia e eritromicina en aislamientos de streptococcus beta-hemol\u00edticos de los grupos a, b, c y g obtenidos en la rioja (13-25%). Un porcentaje superior fue detectado en aislamientos de s.Pneumoniae (54%). Se observ\u00f3 una disminuci\u00f3n en el porcentaje de aislamientos resistentes a eritromicina en las especies s.Pyogenes y s.Pneumoniae a lo largo del periodo analizado (1996-2001), desde un 35 a un 20% en el caso de s.Pyogenes, y desde un 64 a un 47% en s.Pneumoniae. Entre los aislamientos resistentes a eritromicina, el fenotipo m de resistencia fue el m\u00e1s frecuente en s.Pyogenes (80%). El fenotipo mlsb fue exclusivo en aislamientos de streptococcus beta-hemol\u00edticos de los grupos c y g y mayoritario entre los aislamientos de s.Agalactiae<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Mecanismos de resistencia a antibi\u00f3ticos macr\u00f3lidos, lincosamidas y estreptograminas en streptococcus y enterococcus<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Mecanismos de resistencia a antibi\u00f3ticos macr\u00f3lidos, lincosamidas y estreptograminas en streptococcus y enterococcus <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ar\u00e1nzazu Portillo Barrio <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Rioja<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/04\/2002<\/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>Carmen Torres Manrique<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rafael G\u00f3mez lus <\/li>\n<li>Rafael Cant\u00f3n moreno (vocal)<\/li>\n<li>Jos\u00e9 lu\u00eds Mart\u00ednez men\u00e9ndez (vocal)<\/li>\n<li>rosa Mar\u00eda Del campo  moreno (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ar\u00e1nzazu Portillo Barrio La investigaci\u00f3n objeto de esta tesis doctoral se centr\u00f3 en la caracterizaci\u00f3n de los [&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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