{"id":1362,"date":"2025-06-23T12:00:00","date_gmt":"2025-06-23T10:00:00","guid":{"rendered":"https:\/\/jumeaux91.fr\/blog\/sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause\/"},"modified":"2025-06-23T12:00:00","modified_gmt":"2025-06-23T10:00:00","slug":"sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause","status":"publish","type":"post","link":"https:\/\/jumeaux91.fr\/blog\/sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause\/","title":{"rendered":"Scl\u00e9rose en plaques : ces deux bact\u00e9ries intestinales mises en cause"},"content":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/jumeaux91.fr\/blog\/wp-content\/uploads\/2025\/06\/sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause.jpg\" class=\"ff-og-image-inserted\"><\/div>\n<div>\n<p>Une \u00e9tude r\u00e9volutionnaire sur des jumeaux identiques d\u00e9voile un lien entre certaines bact\u00e9ries intestinales et la scl\u00e9rose en plaques. Ces microorganismes pourraient-ils \u00eatre les d\u00e9clencheurs environnementaux de cette maladie auto-immune d\u00e9vastatrice ? Cette d\u00e9couverte ouvre des perspectives prometteuses pour de nouveaux traitements pr\u00e9ventifs ciblant le microbiome intestinal.<\/p>\n<\/div>\n<div id=\"article-anchor-article-main-content\">\n<div>\n<p>La recherche sur la <a href=\"https:\/\/www.futura-sciences.com\/sante\/questions-reponses\/maladie-auto-immune-sclerose-plaques-consequences-vie-professionnelle-15733\/\" title=\"Scl\u00e9rose en plaques : quelles cons\u00e9quences sur la vie professionnelle ?\" target=\"_blank\" rel=\"nofollow\">scl\u00e9rose en plaques<\/a> franchit une \u00e9tape d\u00e9cisive avec l&rsquo;identification de bact\u00e9ries intestinales sp\u00e9cifiques potentiellement impliqu\u00e9es dans le d\u00e9veloppement de cette maladie neurologique. Des chercheurs de l&rsquo;Universit\u00e9 Ludwig Maximilian de Munich ont mis en <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sciences\/definitions\/physique-lumiere-326\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">lumi\u00e8re<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">lumi\u00e8re<\/span> le r\u00f4le possible de certaines souches bact\u00e9riennes comme facteurs environnementaux d\u00e9clencheurs. Cette avanc\u00e9e pourrait transformer notre compr\u00e9hension des m\u00e9canismes de la maladie et ouvrir la voie \u00e0 des approches th\u00e9rapeutiques innovantes.<\/p>\n<h2 id=\"lapproche-novatrice-des-jumeaux-identiques-revele-\">L&rsquo;approche novatrice des jumeaux identiques r\u00e9v\u00e8le des diff\u00e9rences microbiennes<\/h2>\n<p>L&rsquo;\u00e9quipe de recherche a adopt\u00e9 une m\u00e9thodologie particuli\u00e8rement ing\u00e9nieuse pour isoler les facteurs environnementaux des facteurs g\u00e9n\u00e9tiques. Leur \u00e9tude s&rsquo;est concentr\u00e9e sur 81 paires de <a href=\"https:\/\/www.futura-sciences.com\/sante\/actualites\/naissance-etes-vous-genetiquement-programmee-faire-jumeaux-62644\/\" title=\"\u00cates-vous g\u00e9n\u00e9tiquement programm\u00e9e pour faire des jumeaux ?\" target=\"_blank\" rel=\"nofollow\">jumeaux<\/a> identiques dont un seul souffrait de scl\u00e9rose en plaques. Cette approche \u00e9limine naturellement les variables g\u00e9n\u00e9tiques, permettant d&rsquo;observer uniquement l&rsquo;influence de l&rsquo;environnement, notamment du microbiome intestinal.<\/p>\n<p>Les analyses ont r\u00e9v\u00e9l\u00e9 des diff\u00e9rences significatives dans l&rsquo;abondance de 51 types de bact\u00e9ries entre les jumeaux malades et leurs fr\u00e8res ou s\u0153urs en bonne sant\u00e9. Parmi ces diff\u00e9rences, deux souches bact\u00e9riennes ont particuli\u00e8rement retenu l&rsquo;attention des chercheurs : <em>Eisenbergiella tayi <\/em>et <em>Lachnoclostridium<\/em>, toutes deux appartenant \u00e0 la famille des Lachnospiraceae.<\/p>\n<p>Cette d\u00e9couverte s&rsquo;inscrit dans la continuit\u00e9 d&rsquo;\u00e9tudes ant\u00e9rieures qui avaient d\u00e9j\u00e0 sugg\u00e9r\u00e9 des liens entre modifications du microbiome intestinal et scl\u00e9rose en plaques, sans pourtant identifier pr\u00e9cis\u00e9ment les acteurs microbiens impliqu\u00e9s.<\/p>\n<h2 id=\"des-experimentations-sur-modeles-murins-confirment\">Des exp\u00e9rimentations sur mod\u00e8les murins confirment les soup\u00e7ons<\/h2>\n<p>Pour valider leurs hypoth\u00e8ses, les scientifiques ont transf\u00e9r\u00e9 des <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/biologie-micro-organismes-6183\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">microbes<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">microbes<\/span> intestinaux pr\u00e9lev\u00e9s chez certains jumeaux \u00e0 des souris g\u00e9n\u00e9tiquement modifi\u00e9es pour \u00eatre susceptibles de d\u00e9velopper une maladie similaire \u00e0 la scl\u00e9rose en plaques. Les analyses d\u00e9taill\u00e9es des souris qui ont effectivement d\u00e9velopp\u00e9 la maladie ont confirm\u00e9 la pr\u00e9sence pr\u00e9pond\u00e9rante d&rsquo;<em>E. tayi <\/em>et de <em>Lachnoclostridium<\/em>.<\/p>\n<p>En recoupant ces observations avec les diff\u00e9rences d\u00e9j\u00e0 constat\u00e9es entre les jumeaux, les chercheurs ont renforc\u00e9 l&rsquo;hypoth\u00e8se que ces <a href=\"https:\/\/www.futura-sciences.com\/sante\/questions-reponses\/biologie-microbe-virus-bacterie-difference-7123\/\" title=\"Microbe, virus, bact\u00e9rie : quelle diff\u00e9rence ?\" target=\"_blank\" rel=\"nofollow\">bact\u00e9ries<\/a> jouent un r\u00f4le crucial comme facteurs environnementaux d\u00e9clencheurs de la scl\u00e9rose en plaques. Ils reconnaissent n\u00e9anmoins que d&rsquo;autres \u00e9tudes seront n\u00e9cessaires pour \u00e9tendre et confirmer ces r\u00e9sultats qui ont \u00e9t\u00e9 oubli\u00e9s dans la revue <a href=\"https:\/\/www.pnas.org\/doi\/10.1073\/pnas.2419689122\" title=\"Scl\u00e9rose en plaques et microbiote intestinal : les Lachnospiraceae de l'il\u00e9on de jumeaux atteints de SEP d\u00e9clenchent une maladie semblable \u00e0 la SEP chez des souris transg\u00e9niques aseptiques \u2014 Une \u00e9tude fonctionnelle impartiale\" target=\"_blank\" rel=\"nofollow\"><em>PNAS<\/em><\/a>.<\/p>\n<p>Les limitations de cette recherche incluent notamment :<\/p>\n<ul dir=\"ltr\">\n<li role=\"presentation\">l&rsquo;utilisation de <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/biologie-murin-10444\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">mod\u00e8les murins<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">mod\u00e8les murins<\/span> plut\u00f4t que d&rsquo;\u00e9tudes directes sur humains ;<\/li>\n<li role=\"presentation\">la n\u00e9cessit\u00e9 de reproduire ces r\u00e9sultats sur des <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/medecine-cohorte-15863\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">cohortes<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">cohortes<\/span> plus larges ;<\/li>\n<li role=\"presentation\">l&rsquo;absence de m\u00e9canisme pr\u00e9cis expliquant comment ces bact\u00e9ries influencent le d\u00e9veloppement de la maladie.<\/li>\n<\/ul>\n<h2 id=\"laxe-intestincerveau-au-cur-des-hypotheses\">L&rsquo;axe intestin-cerveau au c\u0153ur des hypoth\u00e8ses<\/h2>\n<p>Une des th\u00e9ories propos\u00e9es par les chercheurs s&rsquo;appuie sur l&rsquo;axe intestin-<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/biologie-cerveau-3125\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">cerveau<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">cerveau<\/span>, cette communication bidirectionnelle entre notre syst\u00e8me digestif et notre <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/corps-humain-systeme-nerveux-central-15268\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">syst\u00e8me nerveux central<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">syst\u00e8me nerveux central<\/span>. La scl\u00e9rose en plaques se caract\u00e9rise par une attaque inappropri\u00e9e du <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/medecine-systeme-immunitaire-2722\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">syst\u00e8me immunitaire<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">syst\u00e8me immunitaire<\/span> contre les <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/corps-humain-nerf-13864\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">nerfs<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">nerfs<\/span> du cerveau et de la <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/biologie-moelle-epiniere-2330\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">moelle \u00e9pini\u00e8re<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">moelle \u00e9pini\u00e8re<\/span>. Cette d\u00e9r\u00e9gulation immunitaire pourrait \u00eatre influenc\u00e9e par des signaux provenant de l&rsquo;<a href=\"https:\/\/www.futura-sciences.com\/sante\/actualites\/corps-humain-differences-hommes-femmes-voient-aussi-intestin-77180\/\" title=\"Les diff\u00e9rences hommes-femmes se voient aussi dans l\u2019intestin\" target=\"_blank\" rel=\"nofollow\">intestin<\/a>.<\/p>\n<p>Les chercheurs ont pr\u00e9lev\u00e9 sp\u00e9cifiquement des \u00e9chantillons de l&rsquo;<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/corps-humain-ileon-7233\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">il\u00e9on<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">il\u00e9on<\/span> (partie terminale de l&rsquo;<span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/medecine-intestin-grele-2737\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">intestin gr\u00eale<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">intestin gr\u00eale<\/span>) des jumeaux atteints de scl\u00e9rose en plaques, identifiant des bact\u00e9ries potentiellement facilitatrices de la maladie. Cette strat\u00e9gie exp\u00e9rimentale pourrait ouvrir la voie \u00e0 une compr\u00e9hension fonctionnelle du r\u00f4le du <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/biologie-microbiote-12710\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">microbiote<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">microbiote<\/span> intestinal dans l&rsquo;initiation de la scl\u00e9rose en plaques.<\/p>\n<p>Les perspectives th\u00e9rapeutiques qui d\u00e9coulent de cette d\u00e9couverte sont nombreuses et prometteuses :<\/p>\n<ol dir=\"ltr\">\n<li role=\"presentation\">D\u00e9veloppement de <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/medecine-probiotique-5169\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">probiotiques<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">probiotiques<\/span> cibl\u00e9s pour r\u00e9duire la pr\u00e9sence des bact\u00e9ries incrimin\u00e9es.<\/li>\n<li role=\"presentation\">Mise au point de tests de <span class=\"tooltip__TooltipBoxWrapper-sc-6usjli-0 iqWaqb\"><span class=\"wrappers__Span-sc-13rs60f-1 gOagjN\"><a href=\"https:\/\/www.futura-sciences.com\/sante\/definitions\/medecine-depistage-2659\/\" class=\"typographies__SpanLink-sc-9uspqk-3 BjSPB\" target=\"_blank\" rel=\"nofollow\">d\u00e9pistage<\/a><\/span><\/span><span class=\"wrappers__Span-sc-13rs60f-1 ctwMxz\">d\u00e9pistage<\/span> bas\u00e9s sur la composition du microbiome intestinal.<\/li>\n<li role=\"presentation\">\u00c9laboration de strat\u00e9gies pr\u00e9ventives pour les personnes \u00e0 risque g\u00e9n\u00e9tique.<\/li>\n<li role=\"presentation\">Nouvelles approches pour ralentir la progression de la maladie chez les patients d\u00e9j\u00e0 diagnostiqu\u00e9s.<\/li>\n<\/ol>\n<p>Cette avanc\u00e9e scientifique illustre parfaitement l&rsquo;importance croissante accord\u00e9e au microbiome intestinal dans notre compr\u00e9hension des maladies complexes, particuli\u00e8rement celles impliquant le <a href=\"https:\/\/www.futura-sciences.com\/sante\/questions-reponses\/corps-humain-sont-symptomes-systeme-immunitaire-affaibli-19283\/\" title=\"Quels sont les sympt\u00f4mes d'un syst\u00e8me immunitaire affaibli ?\" target=\"_blank\" rel=\"nofollow\">syst\u00e8me immunitaire<\/a> et neurologique.<\/p>\n<\/div>\n<\/div>\n<p>La chronique se veut g\u00e9n\u00e9r\u00e9e de la fa\u00e7on la plus claire que possible. Dans le cas o\u00f9 vous souhaitez pr\u00e9senter des renseignements compl\u00e9mentaires \u00e0 cet article sur le sujet \u00ab\u00a0Fr\u00e8res jumeaux de l&rsquo;Essonnes\u00a0\u00bb il vous est possible d\u2019\u00e9crire aux contacts indiqu\u00e9s sur notre website. La raison d\u2019\u00eatre de jumeaux91.fr \u00e9tant de rassembler sur le web des posts sur le sujet de Fr\u00e8res jumeaux de l&rsquo;Essonnes puis les diffuser en r\u00e9pondant au mieux aux interrogations des gens. Vous pouvez tirer profit de cet article traitant le sujet \u00ab\u00a0Fr\u00e8res jumeaux de l&rsquo;Essonnes\u00a0\u00bb. Il est concoct\u00e9 par l\u2019\u00e9quipe jumeaux91.fr. Prochainement, nous rendrons accessibles au public d&rsquo;autres informations pertinentes sur le sujet \u00ab\u00a0Fr\u00e8res jumeaux de l&rsquo;Essonnes\u00a0\u00bb. Alors, consultez syst\u00e9matiquement notre blog.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une \u00e9tude r\u00e9volutionnaire sur des jumeaux identiques d\u00e9voile un lien entre certaines bact\u00e9ries intestinales et la scl\u00e9rose en plaques. Ces microorganismes pourraient-ils \u00eatre les d\u00e9clencheurs environnementaux de cette maladie auto-immune d\u00e9vastatrice ? Cette d\u00e9couverte ouvre des perspectives prometteuses pour de nouveaux traitements pr\u00e9ventifs ciblant le microbiome intestinal. La recherche sur la scl\u00e9rose en plaques franchit&hellip; <a class=\"more-link\" href=\"https:\/\/jumeaux91.fr\/blog\/sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause\/\">Poursuivre la lecture <span class=\"screen-reader-text\">Scl\u00e9rose en plaques : ces deux bact\u00e9ries intestinales mises en cause<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":1363,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1362","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-posts-freres-jumeaux-de-lessonnes","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Scl\u00e9rose en plaques : ces deux bact\u00e9ries intestinales mises en cause - JUMEAUX91<\/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:\/\/jumeaux91.fr\/blog\/sclerose-en-plaques-ces-deux-bacteries-intestinales-mises-en-cause\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scl\u00e9rose en plaques : ces deux bact\u00e9ries intestinales mises en cause - JUMEAUX91\" \/>\n<meta property=\"og:description\" content=\"Une \u00e9tude r\u00e9volutionnaire sur des jumeaux identiques d\u00e9voile un lien entre certaines bact\u00e9ries intestinales et la scl\u00e9rose en plaques. Ces microorganismes pourraient-ils \u00eatre les d\u00e9clencheurs environnementaux de cette maladie auto-immune d\u00e9vastatrice ? Cette d\u00e9couverte ouvre des perspectives prometteuses pour de nouveaux traitements pr\u00e9ventifs ciblant le microbiome intestinal. 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