
{"id":105443,"date":"2023-03-02T12:12:35","date_gmt":"2023-03-02T11:12:35","guid":{"rendered":"https:\/\/ibecbarcelona.eu\/?p=105443"},"modified":"2023-03-06T09:40:33","modified_gmt":"2023-03-06T08:40:33","slug":"a-new-treatment-against-chronic-wound-infections","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/un-nuevo-tratamiento-contra-las-infecciones-en-heridas-cronicas","title":{"rendered":"Nueva estrategia contra las infecciones en heridas cr\u00f3nicas"},"content":{"rendered":"\n<p><strong>Las heridas cr\u00f3nicas son un reto para los microbi\u00f3logos debido a la presencia de biofilms, estructuras complejas donde las bacterias se protegen de los antibi\u00f3ticos, impidiendo que las infecciones puedan ser tratadas de forma efectiva. Un equipo de investigaci\u00f3n, liderado por el Instituto de Bioingenier\u00eda de Catalu\u00f1a (IBEC), ha publicado en la revista Frontiers in Microbiology un estudio sobre c\u00f3mo el uso de enzimas espec\u00edficas y la combinaci\u00f3n de diferentes f\u00e1rmacos antibi\u00f3ticos pueden significar un gran avance en la lucha contra este problema.&nbsp;&nbsp;<\/strong>&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"684\" data-src=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-1024x684.jpeg\" alt=\"\" class=\"wp-image-105437 lazyload\" data-srcset=\"https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-1024x684.jpeg 1024w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-300x200.jpeg 300w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-768x513.jpeg 768w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-1200x800.jpeg 1200w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image-600x400.jpeg 600w, https:\/\/ibecbarcelona.eu\/wp-content\/uploads\/2023\/03\/image.jpeg 1285w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/684;\" \/><figcaption class=\"wp-element-caption\"><em>Eduard Torrents en su laboratorio en el IBEC.&nbsp;<\/em><\/figcaption><\/figure>\n\n\n\n<p>La cronificaci\u00f3n de heridas es un importante problema de salud que afecta a casi 2 millones de personas en Europa. La principal causa de que estas heridas no cicatricen es la presencia de comunidades polimicrobianas que forman una matriz extracelular que las protege de los agentes antimicrobianos y c\u00e9lulas de nuestro sistema inmune dando lugar a una organizaci\u00f3n tridimensional conocida como biofilm.&nbsp;<\/p>\n\n\n\n<p>Un estudio liderado por Alba Rubio Canalejas, investigadora del IBEC, y Eduard Torrents, investigador del IBEC y de la Universidad de Barcelona, en colaboraci\u00f3n con el Instituto Jozef Stefan en Eslovenia, describe el dise\u00f1o de un tratamiento innovador basado en el uso de nanopart\u00edculas de plata optimizadas con enzimas y dos antibi\u00f3ticos combinados, que es altamente efectivo contra los biofilms. La investigaci\u00f3n, publicada en la revista <a href=\"https:\/\/www.frontiersin.org\/journals\/microbiology\" target=\"_blank\" rel=\"noreferrer noopener\">Frontiers in Microbiology<\/a>, trata concretamente sobre los biofilms producidos por la infecci\u00f3n dual de las bacterias <em>Pseudomonas aeruginosa y Staphylococcus aureus<\/em>, dos microorganismos muy comunes en este tipo de heridas.&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>Enzimas y antibi\u00f3ticos combinados contra biofilms microbianos<\/strong>&nbsp;<\/p>\n\n\n\n<p>Los biofilms son estructuras formadas por bacterias pat\u00f3genas y una matriz que las envuelve, hecha de polisac\u00e1ridos, prote\u00ednas, l\u00edpidos y ADN extracelular, que dificulta la difusi\u00f3n de antibi\u00f3ticos e impide el tratamiento de la herida.&nbsp;<\/p>\n\n\n\n<p>\u201cEs necesario investigar terapias que mejoren la penetrabilidad y eficacia de los antimicrobianos en esta situaci\u00f3n\u201d, explica Torrents. \u201cSe sabe que la plata, por ejemplo, tiene propiedades antimicrobianas. Decidimos usar nanopart\u00edculas de plata, optimizadas con distintas enzimas, para ver cu\u00e1les de ellas eran m\u00e1s efectivas para deshacer la matriz que forman <em>P.<\/em><em> aeruginosa<\/em> y <em>S.<\/em><em> aureus<\/em>\u201d. Los investigadores demostraron que el tratamiento con nanopart\u00edculas de plata optimizadas con la enzima DNAsa I reduc\u00eda la capacidad para multiplicarse de <em>P. aeruginosa<\/em> en un 99,98% y la de <em>S. aureus<\/em> en un 92,3% en un modelo de herida <em>in vitro<\/em>.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Una vez abierta la matriz, la utilizaci\u00f3n de m\u00e1s de un antibi\u00f3tico a la vez result\u00f3 ser un factor clave para acabar con la infecci\u00f3n. Seg\u00fan explica Rubio-Canalejas, \u201cestas dos bacterias tienen una relaci\u00f3n compleja en la naturaleza, donde pueden ser competitivas, debido a los exoproductos producidos por <em>P. aeruginosa que <\/em>suprimen el crecimiento de <em>S. aureus<\/em>. Sin embargo, en el contexto de los biofilms, establecen sinergias y en lugar de competir, colaboran.\u00a0 La infecci\u00f3n dual aumenta su resistencia y tolerancia a los antimicrobianos, lo que permite que colonicen el tejido e impidan la curaci\u00f3n de la herida\u201d. Los investigadores descubrieron que el uso de un \u00fanico tipo de f\u00e1rmaco afectaba de forma diferente a cada especie de bacteria. El antibi\u00f3tico ciprofloxacina hac\u00eda que <em>P. aeruginosa<\/em> superara a <em>S. aureus<\/em> y la gentamicina provocaba el efecto contrario. Sin embargo, una terapia dual que combinaba ambos compuestos permiti\u00f3 reducir las poblaciones de ambas especies.\u00a0<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><em>\u201cHay muy poca bibliograf\u00eda sobre c\u00f3mo se distribuyen las bacterias dentro de los biofilms polimicrobianos. Descubrir c\u00f3mo se organizan puede ser de gran ayuda para mejorar futuros tratamientos.\u201d<\/em><\/p>\n<cite><em>Eduard Torrents<\/em>&nbsp;<\/cite><\/blockquote>\n\n\n\n<p>Por otra parte, los investigadores estudiaron la composici\u00f3n interna del biofilm, representando, por primera vez, un esquema general de c\u00f3mo se distribuyen las bacterias en el espacio tridimensional. \u201cVimos que <em>S. aureus<\/em> forma agregados en la parte m\u00e1s interna del biofilm, protegi\u00e9ndose as\u00ed de <em>P. aeruginosa<\/em> y, a la vez, permitiendo que ambas convivan y empeoren cualquier tipo de infecci\u00f3n\u201d, explica Torrents.&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<p>En conclusi\u00f3n, el estudio abre una nueva v\u00eda para entender mejor los biofilms y dise\u00f1ar tratamientos cl\u00ednicos que combinen enzimas y antibi\u00f3ticos, esenciales para eliminar las infecciones en las heridas cr\u00f3nicas.&nbsp;&nbsp;&nbsp;&nbsp;<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p><strong>Art\u00edculo de referencia:&nbsp;<\/strong>&nbsp;<\/p>\n\n\n\n<p>Alba Rubio-Canalejas, Aida Baelo, Sara Herbera, N\u00faria Blanco-Cabra, Marija Vukomanovic y Eduard Torrents. 3D spatial organizaci\u00f3n and improved antibiotic treatment of a <em>Pseudomonas aeruginosa<\/em>&#8211;<em>Staphylococcus aureus<\/em> wound biofilm by nanoparticle enzime delivery.&nbsp; DOI: <a href=\"https:\/\/doi.org\/10.3389\/fmicb.2022.959156\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doi.org\/10.3389\/fmicb.2022.959156<\/a>&nbsp;&nbsp;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n","protected":false},"excerpt":{"rendered":"<p>Las heridas cr\u00f3nicas son un reto para los microbi\u00f3logos debido a la presencia de biofilms, estructuras complejas donde las bacterias se protegen de los antibi\u00f3ticos, impidiendo que las infecciones puedan &#8230; <a title=\"Nueva estrategia contra las infecciones en heridas cr\u00f3nicas\" class=\"read-more\" href=\"https:\/\/ibecbarcelona.eu\/es\/un-nuevo-tratamiento-contra-las-infecciones-en-heridas-cronicas\" aria-label=\"More on Nueva estrategia contra las infecciones en heridas cr\u00f3nicas\">Read more<\/a><\/p>\n","protected":false},"author":37,"featured_media":105439,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[1907,1142,1912,1908],"post_formats":[],"class_list":["post-105443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticias-de-investigacion","tag-bacterial-infections-and-antimicrobial-therapies-es","tag-eduard-torrents-es","tag-infecciones-bacterianas","tag-resistencia-bacteriana-es"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nueva estrategia contra las infecciones en heridas cr\u00f3nicas - 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\/un-nuevo-tratamiento-contra-las-infecciones-en-heridas-cronicas\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nueva estrategia contra las infecciones en heridas cr\u00f3nicas - Institute for Bioengineering of Catalonia\" \/>\n<meta property=\"og:description\" content=\"Las heridas cr\u00f3nicas son un reto para los microbi\u00f3logos debido a la presencia de biofilms, estructuras complejas donde las bacterias se protegen de los antibi\u00f3ticos, impidiendo que las infecciones puedan ... 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