{"id":493,"date":"2020-03-11T16:51:15","date_gmt":"2020-03-11T15:51:15","guid":{"rendered":"https:\/\/www.genoscreen.fr\/grippe-lutter-contre-les-surinfections-bacteriennes-grace-au-microbiote\/"},"modified":"2026-06-03T16:59:25","modified_gmt":"2026-06-03T14:59:25","slug":"grippe-lutter-contre-les-surinfections-bacteriennes-grace-au-microbiote","status":"publish","type":"post","link":"https:\/\/www.genoscreen.fr\/fr\/actualites\/grippe-lutter-contre-les-surinfections-bacteriennes-grace-au-microbiote\/","title":{"rendered":"Grippe : lutter contre les surinfections bact\u00e9riennes gr\u00e2ce au microbiote"},"content":{"rendered":"<p class=\"intro\">Des chercheurs du Centre d&rsquo;infection et d&rsquo;immunit\u00e9 de Lille (CNRS\/Inserm\/Institut Pasteur de Lille\/Universit\u00e9 de Lille\/CHU de Lille), d&rsquo;INRAE et de GenoScreen r\u00e9v\u00e8lent pour la premi\u00e8re fois chez la souris, que les perturbations du microbiote intestinal engendr\u00e9es par le virus de la grippe favorisent les surinfections bact\u00e9riennes secondaires. Publi\u00e9s dans <em>Cell Reports<\/em> le 3 mars 2020, ces r\u00e9sultats offrent de nouvelles perspectives pour la pr\u00e9vention et le traitement des pneumonies bact\u00e9riennes, une cause majeure de d\u00e9c\u00e8s chez les personnes \u00e2g\u00e9es ou vuln\u00e9rables infect\u00e9es par le virus de la grippe.<\/p>\n<p><!--more--><\/p>\n<p>La grippe et ses complications demeurent un probl\u00e8me important de sant\u00e9 publique et une lourde charge socio-\u00e9conomique. Les campagnes de vaccination et la d\u00e9couverte de nouveaux traitements antiviraux offrent des solutions pr\u00e9ventives ou th\u00e9rapeutiques. Cependant, l\u2019alt\u00e9ration des m\u00e9canismes de d\u00e9fense contre les infections bact\u00e9riennes secondaires, qui aggravent consid\u00e9rablement le tableau clinique des personnes gripp\u00e9es, reste un probl\u00e8me majeur.<br \/>Sp\u00e9cialis\u00e9e dans le domaine de l\u2019immunit\u00e9 pulmonaire, l\u2019\u00e9quipe dirig\u00e9e par Fran\u00e7ois Trottein, chercheur du CNRS au Centre d&rsquo;infection et d&rsquo;immunit\u00e9 de Lille (CNRS\/Inserm\/Institut Pasteur de Lille\/Universit\u00e9 de Lille\/CHU Lille), s\u2019est int\u00e9ress\u00e9e au microbiote intestinal, bien connu pour son r\u00f4le cl\u00e9 dans de nombreux processus physiologiques, y compris les m\u00e9canismes de d\u00e9fenses immunitaires. Les scientifiques ont montr\u00e9, chez la souris, que la grippe modifie de fa\u00e7on transitoire la composition et l&rsquo;activit\u00e9 m\u00e9tabolique du microbiote intestinal probablement \u00e0 cause de la r\u00e9duction de la consommation alimentaire durant la maladie. Lors de la grippe, la production d\u2019acides gras \u00e0 cha\u00eenes courtes par les bact\u00e9ries du microbiote est \u00e9galement r\u00e9duite. Or, l\u2019\u00e9quipe d\u00e9voile que ces acides gras favorisent \u00e0 distance l\u2019activit\u00e9 bact\u00e9ricide des macrophages pr\u00e9sents dans les poumons. La perturbation du microbiote intestinal par la grippe compromet donc les d\u00e9fenses pulmonaires, notamment contre <em>Streptococcus pneumoniae<\/em>, la premi\u00e8re cause des pneumonies bact\u00e9riennes chez l\u2019humain.<\/p>\n<p>Les chercheurs et chercheuses ont par ailleurs d\u00e9montr\u00e9 que cette sensibilit\u00e9 \u00e0 la surinfection bact\u00e9rienne peut \u00eatre corrig\u00e9e par un traitement \u00e0 l\u2019ac\u00e9tate, l\u2019un des principaux acides gras \u00e0 cha\u00eenes courtes produit par le microbiote. Ces travaux pourraient avoir des applications concr\u00e8tes pour le bien-\u00eatre des patients infect\u00e9s, qui seraient mieux arm\u00e9s contre les complications li\u00e9es \u00e0 la grippe. Cette d\u00e9couverte, r\u00e9alis\u00e9e en collaboration avec des scientifiques de l\u2019Institut Micalis (INRAE\/AgroParistech\/Universit\u00e9 Paris Saclay), du Lille inflammation research international center (Inserm\/Universit\u00e9 de Lille\/CHU Lille), du laboratoire Conception et application de mol\u00e9cules bioactives (CNRS\/Universit\u00e9 de Strasbourg), de l\u2019unit\u00e9 Virologie et immunologie mol\u00e9culaires (INRAE) et de la soci\u00e9t\u00e9 GenoScreen (Lille), repr\u00e9sente une avanc\u00e9e majeure dans la compr\u00e9hension des m\u00e9canismes conduisant aux surinfections bact\u00e9riennes chez les patients gripp\u00e9s. Elle pourrait conduire au d\u00e9veloppement de nouvelles strat\u00e9gies nutritionnelles et\/ou th\u00e9rapeutiques visant \u00e0 mieux contr\u00f4ler les infections bact\u00e9riennes.<\/p>\n<ul>\n<li>D\u00e9couvrez l\u2019\u00e9tude&nbsp;: Sencio V, Barthelemy A, Tavares LP, Machado MG, Soulard D, Cuinat C, Queiroz-Junior CM, Noordine ML, Salom\u00e9-Desnoulez S, Deryuter L, Folign\u00e9 B, <strong>Wahl C<\/strong>, Frisch B, Vieira AT, Paget C, Milligan G, Ulven T, Wolowczuk I, Faveeuw C, Le Goffic R, Thomas M, <strong>Ferreira S<\/strong>, Teixeira MM, Trottein F. <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2211124720301674\">Gut Dysbiosis during Influenza Contributes to Pulmonary Pneumococcal Superinfection through Altered Short-Chain Fatty Acid Production<\/a>. Cell Rep. 2020 Mar 3;30(9):2934-2947.e6<\/li>\n<li><a href=\"https:\/\/www.genoscreen.fr\/fr\/profilage-bacterien-et-fongique\/\">D\u00e9couvrez-en plus \u00e0 propos de Metabiote, la solution d&rsquo;analyse du microbiote utilis\u00e9e dans cette \u00e9tude<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Des chercheurs du Centre d&rsquo;infection et d&rsquo;immunit\u00e9 de Lille (CNRS\/Inserm\/Institut Pasteur de Lille\/Universit\u00e9 de Lille\/CHU de Lille), d&rsquo;INRAE et de GenoScreen r\u00e9v\u00e8lent pour la premi\u00e8re fois chez la souris, que les perturbations du microbiote intestinal engendr\u00e9es par le virus de la grippe favorisent les surinfections bact\u00e9riennes secondaires. Publi\u00e9s dans Cell Reports le 3 mars 2020, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1140,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-493","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Grippe : lutter contre les surinfections bact\u00e9riennes gr\u00e2ce au microbiote - GenoScreen<\/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:\/\/www.genoscreen.fr\/fr\/actualites\/grippe-lutter-contre-les-surinfections-bacteriennes-grace-au-microbiote\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grippe : lutter contre les surinfections bact\u00e9riennes gr\u00e2ce au microbiote - GenoScreen\" \/>\n<meta property=\"og:description\" content=\"Des chercheurs du Centre d&rsquo;infection et d&rsquo;immunit\u00e9 de Lille (CNRS\/Inserm\/Institut Pasteur de Lille\/Universit\u00e9 de Lille\/CHU de Lille), d&rsquo;INRAE et de GenoScreen r\u00e9v\u00e8lent pour la premi\u00e8re fois chez la souris, que les perturbations du microbiote intestinal engendr\u00e9es par le virus de la grippe favorisent les surinfections bact\u00e9riennes secondaires. 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