{"id":12414,"date":"2018-03-09T08:58:15","date_gmt":"2018-03-09T08:58:15","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-de-las-beta-lactamasas-de-espectro-extendido-y-cefamicinasas-en-enterobacterias-aisladas-entre-1997-y-1999-en-barcelona\/"},"modified":"2018-03-09T08:58:15","modified_gmt":"2018-03-09T08:58:15","slug":"caracterizacion-de-las-beta-lactamasas-de-espectro-extendido-y-cefamicinasas-en-enterobacterias-aisladas-entre-1997-y-1999-en-barcelona","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/caracterizacion-de-las-beta-lactamasas-de-espectro-extendido-y-cefamicinasas-en-enterobacterias-aisladas-entre-1997-y-1999-en-barcelona\/","title":{"rendered":"Caracterizaci\u00f3n de las beta-lactamasas de espectro extendido y cefamicinasas en enterobacterias aisladas entre 1997 y 1999 en barcelona"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Roxana Reveca Aliaga Almedo <\/strong><\/h2>\n<p>La alta incidencia de las enfermedades infecciosas, la importancia de las enterobacterias como agentes causales m\u00e1s frecuentes y el surgimiento de cepas resistenes a los antibi\u00f3ticos son factores que concurren en uno de los mayores problemas de la medicina actual y del futuro: la multiresistencia. en esta tesis se aborda el problema de las cepas de neterobacterias portadores de beta-lactamasas de espectro extendido (bleas) y cefamicinasas, en el \u00e1mbito de la poblaci\u00f3n atendida en el hospital de la santa creu y sant pau de barcelona.  de 1997 a 1999 se han obtenido en el hospital de la santa creu i sant pau, 13800 cepas de enterobacterias, entre las cuales se identificaron y  caracterizaron las portadoreas de bleas y cefamicinasas. Despu\u00e9s de una primera selecci\u00f3n, en funci\u00f3n al patr\u00f3n de resitencia por la t\u00e9cnica de disco difusi\u00f3n y la posterior caracterizaci\u00f3n fenot\u00edpica y genot\u00edpica de las beta-lactamasas, fueron identificadas 35 cepas de escherichia coli (0,455 de las cepas aisladas de esta especie bacteriana); 9 de klebsiella pneumoniae (1,83%); 2 cepas de salmonella enterica (0,11%); y una de proteus mirabilis (0,11%) portadoras de las enzimas investigadas. Adem\u00e1s del patr\u00f3n de resistencia, la caracterizaci\u00f3n incluy\u00f3 ensayos de sinergia, biotipado, punto isoel\u00e9ctrico e identificaci\u00f3n del en respectivo mediante pcr.  las betas-lactamasas de espectro extendido en e. Coli hans ido ctx-m-9 (27 cepas); shv-2 (6 cepas); tem-10 (1 cepa) y tem-12 (1 cepa). Ctx-m-9, actualmente predominante, ha aumentado su incidencia cinco veces (0,45%) respecto al trienio anterior (0,08% en 1994-1996). Por otra parte, se ha observado por primera vez en el \u00e1mbito de nuestro hospital, la presencia de cefamicinasas plasm\u00eddicas tipo cmy-2 en una cepa de cada una de las siguientes especies klebsiella pneumoniae, salmonella enterica y proteus mirabilis.  respecto a las caracter\u00edsticas de los pacientes y naturaleza de la infecci\u00f3n, en e<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n de las beta-lactamasas de espectro extendido y cefamicinasas en enterobacterias aisladas entre 1997 y 1999 en barcelona<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n de las beta-lactamasas de espectro extendido y cefamicinasas en enterobacterias aisladas entre 1997 y 1999 en barcelona <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Roxana Reveca Aliaga Almedo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Aut\u00f3noma de barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 19\/07\/2001<\/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>Guillem Prats Pastor<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: beatriz Mirelis <\/li>\n<li>neus Carde\u00f1osa (vocal)<\/li>\n<li>montserrat Gallego (vocal)<\/li>\n<li>montserrat Llagostera (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Roxana Reveca Aliaga Almedo La alta incidencia de las enfermedades infecciosas, la importancia de las enterobacterias como 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