
{"id":22770,"date":"2016-05-09T07:33:13","date_gmt":"2016-05-09T07:33:13","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/?p=22770"},"modified":"2016-05-19T13:35:10","modified_gmt":"2016-05-19T13:35:10","slug":"como-evitar-que-las-bacterias-se-sientan-como-en-casa","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\/","title":{"rendered":"C\u00f3mo evitar que las bacterias se sientan como en casa"},"content":{"rendered":"<h6 class=\"caption\" style=\"float: left; width: 30%; padding: 0px 30px 10px 0px;\">Pie de foto: Observaciones por microscop\u00eda confocal de biofilms estructurados de P. aeruginosa PAO1 de tipo salvaje, y las cepas mutadas para cada una de las distintas clases de RNR (ETS102, ETS103 y ETS125). En el lado izquierdo, se muestra un esquema de la estructura longitudinal de una biopel\u00edcula de P. aeruginosa, mostr\u00e1ndose la concentraci\u00f3n de ox\u00edgeno a lo largo de la biopel\u00edcula (Stewart y Franklin, 2008). A la derecha, se muestran im\u00e1genes tomadas de la regi\u00f3n aer\u00f3bica de la biopel\u00edcula (arriba la parte superficial de la biopel\u00edcula) y de la regi\u00f3n anaer\u00f3bica (parte inferior, la m\u00e1s profunda en la estructura de la pel\u00edcula).<\/h6>\n<p>Esta biopel\u00edcula no solo facilita la comunicaci\u00f3n de c\u00e9lula a c\u00e9lula entre las bacterias, tambi\u00e9n permite que la infecci\u00f3n aumente y prospere, incrementando las posibilidades de desarrollar nuevas resistencias a los antibi\u00f3ticos y escapar al sistema inmune de nuestro cuerpo.<\/p>\n<p>Como la concentraci\u00f3n de ox\u00edgeno en la biopel\u00edcula es un par\u00e1metro crucial para el crecimiento de las bacterias, y en las capas inferiores de una biopel\u00edcula madura se reduce la concentraci\u00f3n de ox\u00edgeno provocando unas condiciones anaer\u00f3bicas estrictas (sin ox\u00edgeno) en su interior, los investigadores del IBEC, analizaron el efecto del oxigeno sobre los tres tipos diferentes de la enzima ribonucle\u00f3tido reductasa (RNR) de la bacteria <em>P. aeruginosa<\/em>, fundamental para suministrar los precursores necesarios para la s\u00edntesis y reparaci\u00f3n del ADN.<\/p>\n<p>\u201c<em>P. aeruginosa<\/em> es una de las pocas bacterias que codifican para las tres clases de RNR conocidas: clase I, la que es dependiente de ox\u00edgeno, clase II, la que es independiente de ox\u00edgeno, y clase III, la que es sensible al ox\u00edgeno y solo puede funcionar en condiciones anaer\u00f3bicas estrictas\u201d, explica Eduard Torrents, investigador principal del IBEC que llev\u00f3 a cabo el estudio. \u201cEstas RNR son las responsables de aumentar la capacidad de esta bacteria para crecer en los diferentes entornos aer\u00f3bicos y anaer\u00f3bicos generados a lo largo de las biopel\u00edculas\u201d.<\/p>\n<p>Los cient\u00edficos modelaron una biopel\u00edcula de <em>P. aeruginosa<\/em> como un conjunto de capas con diferentes perfiles de expresi\u00f3n de RNR. \u201cHemos encontrado que las bacterias ten\u00edan dificultades de formar una biopel\u00edcula cuando faltaban las RNR de clase II y III -la clase independiente y la sensible al ox\u00edgeno-\u201d, explica Anna Crespo, primera autora del art\u00edculo. \u201cLas RNR de clases II y III son claramente esenciales para el crecimiento anaer\u00f3bico y, sin ellas, las biopel\u00edculas totalmente maduras no pueden establecerse\u201d.<\/p>\n<p>Sus hallazgos llevan a los investigadores a acercarse a comprender \u00e9ste complejo patr\u00f3n de crecimiento de las bacterias, sobretodo en infecciones pulmonares cr\u00f3nicas donde juegan un papel muy importante. Entender la virulencia de las biopel\u00edculas bacterianas ayudar\u00e1 a mejorar el dise\u00f1o de f\u00e1rmacos antibacterianos espec\u00edficos.<\/p>\n<p>&#8212;<\/p>\n<p><strong>Art\u00edculo de referencia: <\/strong>Anna Crespo, Lucas Pedraz, Josep Astola, Eduard Torrents (2016). <a href=\"http:\/\/journal.frontiersin.org\/article\/10.3389\/fmicb.2016.00688\/full\"><em>Pseudomonas aeruginosa<\/em> exhibits deficient biofilm formation in the absence of class II and III ribonucleotide reductases due to hindered anaerobic growth.<\/a> <em>Frontiers in Microbiology<\/em> 7:688. doi: 10.3389\/fmicb.2016.00688.<\/p>\n<p>&#8212;<br \/>\n<strong>IBEC in the media:<\/strong><\/p>\n<p>La Vanguardia, <a href=\"http:\/\/www.lavanguardia.com\/vida\/20160509\/401672987400\/investigadores-abren-nuevas-vias-para-mejorar-los-farmacos-antibacterianos.html\" target=\"_blank\">\u00abInvestigadores abren nuevas v\u00edas para mejorar los f\u00e1rmacos antibacterianos\u00bb<br \/>\n<\/a>NCYT, <a href=\"http:\/\/noticiasdelaciencia.com\/not\/19450\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\/?utm_source=twitterfeed&amp;utm_medium=twitter\" target=\"_blank\">\u00abC\u00f3mo evitar que las bacterias se sientan como en casa\u00bb<br \/>\n<\/a>Gaceta M\u00e9dica, <a href=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/2016-05-16-ETorrents-GacetaMedica-la-RII-y-RIII-clave-para-la-creacion-de-la-biopelicula.pdf\" target=\"_blank\">\u00abRNRII y III son clave para que las bacterias formen la biopel\u00edcula\u00bb<br \/>\n<\/a>Agencia SINC, <a href=\"http:\/\/www.agenciasinc.es\/Noticias\/Como-evitar-que-las-bacterias-se-sientan-como-en-casa\" target=\"_blank\">\u00abC\u00f3mo evitar que las bacterias se sientan como en casa\u00bb<br \/>\n<\/a>F\u00e1rmaco Salud, <a href=\"http:\/\/farmacosalud.com\/aval-ceftazidima-y-avibactam-para-tratar-infecciones-por-bacterias-gram-negativas\/\" target=\"_blank\">\u00abC\u00f3mo evitar que las bacterias se sienta como en casa\u00bb<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<h3><img decoding=\"async\" class=\"left size-full wp-image-22742 lazyload\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web.jpg\" alt=\"torrentsFig2_web\" width=\"400\" height=\"220\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web.jpg 400w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web-300x165.jpg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web-230x127.jpg 230w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web-150x83.jpg 150w\" data-sizes=\"(max-width: 400px) 100vw, 400px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 400px; --smush-placeholder-aspect-ratio: 400\/220;\" \/><\/a>Investigadores del Institut de Bioenginyeria de Catalunya (IBEC) est\u00e1n m\u00e1s cerca de comprender c\u00f3mo las bacterias provocan infecciones cr\u00f3nicas mediante la identificaci\u00f3n de las enzimas clave que les permiten crear las condiciones adecuadas para la infecci\u00f3n en forma de biopel\u00edcula, lo que ayudar\u00e1 a mejorar el dise\u00f1o de f\u00e1rmacos antibacterianos espec\u00edficos.<\/h3>\n<p>Cuando las bacterias <em>P. aeruginosa<\/em> provocan infecciones cr\u00f3nicas de pulm\u00f3n, como por ejemplo en pacientes de Fibrosis Qu\u00edstica o de Enfermedad Pulmonar Obstructiva Cr\u00f3nica (EPOC), significa que han sido capaces de formar una biopel\u00edcula madura in situ que les permite crecer y adaptarse.<\/p>\n","protected":false},"author":4,"featured_media":22743,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"post_formats":[],"class_list":["post-22770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C\u00f3mo evitar que las bacterias se sientan como en casa - Institute for Bioengineering of Catalonia<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ibecbarcelona.eu\/es\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f3mo evitar que las bacterias se sientan como en casa - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Investigadores del Institut de Bioenginyeria de Catalunya (IBEC) est\u00e1n m\u00e1s cerca de comprender c\u00f3mo las bacterias provocan infecciones cr\u00f3nicas mediante la identificaci\u00f3n de las enzimas clave que les permiten crear las condiciones adecuadas para la infecci\u00f3n en forma de biopel\u00edcula, lo que ayudar\u00e1 a mejorar el dise\u00f1o de f\u00e1rmacos antibacterianos espec\u00edficos.  Cuando las bacterias P. aeruginosa provocan infecciones cr\u00f3nicas de pulm\u00f3n, como por ejemplo en pacientes de Fibrosis Qu\u00edstica o de Enfermedad Pulmonar Obstructiva Cr\u00f3nica (EPOC), significa que han sido capaces de formar una biopel\u00edcula madura in situ que les permite crecer y adaptarse.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ibecbarcelona.eu\/es\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"article:published_time\" content=\"2016-05-09T07:33:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-05-19T13:35:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2016\/05\/torrentsFig2_web.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"400\" \/>\n\t<meta property=\"og:image:height\" content=\"220\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u00c0ngels L\u00f3pez\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u00c0ngels L\u00f3pez\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/\"},\"author\":{\"name\":\"\u00c0ngels L\u00f3pez\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#\\\/schema\\\/person\\\/c212c6b589546130be67986b9290e2b8\"},\"headline\":\"C\u00f3mo evitar que las bacterias se sientan como en casa\",\"datePublished\":\"2016-05-09T07:33:13+00:00\",\"dateModified\":\"2016-05-19T13:35:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/\"},\"wordCount\":618,\"publisher\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ibecbarcelona.eu\\\/wp-content\\\/uploads\\\/2016\\\/05\\\/torrentsFig2_web.jpg\",\"articleSection\":[\"Noticias de investigaci\u00f3n\"],\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/\",\"url\":\"https:\\\/\\\/ibecbarcelona.eu\\\/es\\\/como-evitar-que-las-bacterias-se-sientan-como-en-casa\\\/\",\"name\":\"C\u00f3mo evitar que las bacterias se sientan como en casa - 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