{"id":15785,"date":"2026-04-17T20:10:36","date_gmt":"2026-04-17T18:10:36","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/des-chercheurs-decouvrent-la-possibilite-dinverser-les-symptomes-de-la-demence\/"},"modified":"2026-04-17T20:10:37","modified_gmt":"2026-04-17T18:10:37","slug":"des-chercheurs-decouvrent-la-possibilite-dinverser-les-symptomes-de-la-demence","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/des-chercheurs-decouvrent-la-possibilite-dinverser-les-symptomes-de-la-demence\/","title":{"rendered":"Des chercheurs d\u00e9couvrent la possibilit\u00e9 d&rsquo;inverser les sympt\u00f4mes de la d\u00e9mence"},"content":{"rendered":"<p><!--$--><\/p>\n<div data-hk=\"00942120a20200\" class=\"Html-Block\" data-qa-article-content-text>\n<p>La maladie d&rsquo;Alzheimer est actuellement consid\u00e9r\u00e9e comme irr\u00e9versible : la perte de cellules c\u00e9r\u00e9brales ne peut plus \u00eatre invers\u00e9e. Mais cela ne s\u2019applique pas \u00e0 tous les sympt\u00f4mes de la d\u00e9mence, comme le sugg\u00e8re d\u00e9sormais une \u00e9tude allemande. Ainsi, la perte de m\u00e9moire chez les patients atteints de la maladie d&rsquo;Alzheimer est en partie due \u00e0 des troubles purement fonctionnels des r\u00e9seaux c\u00e9r\u00e9braux et non \u00e0 des dommages irr\u00e9versibles. Cela laisse esp\u00e9rer que la d\u00e9mence pourra \u00eatre am\u00e9lior\u00e9e, au moins dans les premiers stades, gr\u00e2ce \u00e0 des th\u00e9rapies cibl\u00e9es.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202104\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-mobile-hor-2\" data-orientation=\"hor\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<div data-hk=\"00942120a20220\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Il n\u2019existe actuellement aucun rem\u00e8de contre la d\u00e9mence d\u2019Alzheimer. Certains m\u00e9dicaments peuvent ralentir la d\u00e9gradation progressive de la mati\u00e8re c\u00e9r\u00e9brale. Cependant, ils ne peuvent pas arr\u00eater ou inverser compl\u00e8tement la maladie neurod\u00e9g\u00e9n\u00e9rative. N\u00e9anmoins, il existe des premi\u00e8res indications selon lesquelles au moins certains sympt\u00f4mes cognitifs peuvent \u00eatre stopp\u00e9s, voire am\u00e9lior\u00e9s, gr\u00e2ce \u00e0 certaines th\u00e9rapies.<\/p>\n<\/div>\n<div data-hk=\"00942120a20230\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Alzheimer : des chercheurs d\u00e9couvrent des erreurs de circuit<\/h2>\n<p>Une \u00e9quipe dirig\u00e9e par Emrah D\u00fczel du Centre allemand des maladies neurod\u00e9g\u00e9n\u00e9ratives (DZNE) \u00e0 Magdebourg a maintenant examin\u00e9 plus en d\u00e9tail pourquoi c&rsquo;est le cas et quelles mesures pourraient aider \u00e0 lutter contre les pertes mentales progressives. <\/p>\n<\/div>\n<aside data-hk=\"00942120a202404\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-out\">\n<div id=\"ad-slot-mobile-out-1\" data-orientation=\"out\" data-index=\"1\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a20250\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Dans leur article de synth\u00e8se, ils analysent pourquoi la m\u00e9moire \u00e9pisodique est perturb\u00e9e chez de nombreux patients atteints de la maladie d&rsquo;Alzheimer et \u00e0 quels facteurs neurobiologiques cela est d\u00fb.<\/p>\n<\/div>\n<div data-hk=\"00942120a20260\" class=\"Ad-Row\">\n<div class=\"Ad-Col col-lg-5\">\n<div data-hk=\"00942120a2026104\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-ver\" role=\"region\" aria-label=\"Anzeige 1\">\n<div id=\"ad-slot-desktop-ver-1\" data-orientation=\"ver\" data-index=\"1\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<div class=\"Ad-Col col-lg-5\">\n<aside data-hk=\"00942120a2026204\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-ver Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-desktop-ver-2\" data-orientation=\"ver\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<\/div>\n<\/div>\n<div data-hk=\"00942120a20270\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Nos souvenirs personnels sont cr\u00e9\u00e9s gr\u00e2ce \u00e0 l\u2019interaction coordonn\u00e9e de diverses r\u00e9gions du cerveau, notamment le centre de la m\u00e9moire situ\u00e9 dans l\u2019hippocampe, mais \u00e9galement de nombreuses autres zones de notre cerveau. \u00abDans le cerveau, la m\u00e9moire est organis\u00e9e en circuits clairs\u00bb, explique D\u00fczel. \u00ab Si ceux-ci ne fonctionnent plus efficacement ensemble, des probl\u00e8mes de m\u00e9moire surviennent \u2013 \u200b\u200bm\u00eame si des parties de la structure sont toujours l\u00e0. \u00bb<\/p>\n<\/div>\n<aside data-hk=\"00942120a202804\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-3\" data-orientation=\"hor\" data-index=\"3\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a20290\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>La maladie d\u2019Alzheimer ne \u00ab d\u00e9truit-elle \u00bb pas r\u00e9ellement les cellules ?<\/h2>\n<p>Dans le cas de la maladie d&rsquo;Alzheimer, on pensait auparavant que la perte de m\u00e9moire \u00e9tait principalement caus\u00e9e par la destruction de la substance c\u00e9r\u00e9brale &#8211; en particulier dans l&rsquo;hippocampe, un nombre particuli\u00e8rement important de neurones mouraient souvent \u00e0 cause de la d\u00e9mence. <\/p>\n<\/div>\n<div data-hk=\"00942120a202a100\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Mais D\u00fczel et son \u00e9quipe ont mis au point un nouveau mod\u00e8le bas\u00e9 sur la situation actuelle de la recherche. Selon ce \u00abCircuit Utilization Framework\u00bb, au moins certains des probl\u00e8mes de m\u00e9moire &#8211; en particulier au d\u00e9but de la d\u00e9mence &#8211; ne sont pas dus \u00e0 des pertes de cellules c\u00e9r\u00e9brales, mais uniquement \u00e0 une coop\u00e9ration alt\u00e9r\u00e9e entre les r\u00e9seaux c\u00e9r\u00e9braux. <\/p>\n<\/div>\n<aside data-hk=\"00942120a202a1104\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-4\" data-orientation=\"hor\" data-index=\"4\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a120\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Certains troubles de la m\u00e9moire pourraient donc \u00eatre dus au fait que les connexions existantes ne sont plus activ\u00e9es ou coordonn\u00e9es de mani\u00e8re optimale. <\/p>\n<\/div>\n<div data-hk=\"00942120a202a130\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Capacit\u00e9 c\u00e9r\u00e9brale disponible \u2013 mais non utilisable<\/h2>\n<p>Les neurones et connexions fonctionnelles du r\u00e9seau de m\u00e9moire \u00e9pisodique sont donc toujours pr\u00e9sents. Mais les synapses qui transmettent les signaux n\u00e9cessaires sont d\u00e9r\u00e9gul\u00e9es : certaines r\u00e9agissent trop faiblement, d&rsquo;autres trop fortement, comme le rapportent les chercheurs. Le r\u00e9sultat est un d\u00e9s\u00e9quilibre qui perturbe le fonctionnement de la m\u00e9moire.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a1404\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-5\" data-orientation=\"hor\" data-index=\"5\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<aside data-hk=\"00942120a202a1504\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-hor Ad-Slot-FC\">\n<div class=\"Ad-Slot-FC-Container\">\n<div class=\"Ad-Slot-FC-Window\">\n<div id=\"ad-slot-desktop-hor-2\" data-orientation=\"hor\" data-index=\"2\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<div data-hk=\"00942120a202a160\" class=\"Html-Block\" data-qa-article-content-text>\n<p>\u00ab\u00a0Nous constatons que les capacit\u00e9s fonctionnelles restantes du cerveau ne peuvent plus \u00eatre utilis\u00e9es de mani\u00e8re fiable\u00a0\u00bb, explique D\u00fczel. \u00ab\u00a0Cela ouvre la possibilit\u00e9 de cibler sp\u00e9cifiquement le fonctionnement de ces r\u00e9seaux et circuits.\u00a0\u00bb<\/p>\n<\/div>\n<div data-hk=\"00942120a202a170\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>Comment les sympt\u00f4mes pourraient \u00eatre invers\u00e9s<\/h2>\n<p>Selon l&rsquo;\u00e9quipe, les th\u00e9rapies contre la maladie d&rsquo;Alzheimer ne devraient pas uniquement \u00eatre con\u00e7ues pour arr\u00eater la destruction progressive des cellules c\u00e9r\u00e9brales. En outre, il est logique de renforcer les r\u00e9seaux c\u00e9r\u00e9braux et les capacit\u00e9s encore pr\u00e9sentes et uniquement fonctionnellement alt\u00e9r\u00e9es. De telles th\u00e9rapies pourraient contribuer \u00e0 am\u00e9liorer certains sympt\u00f4mes de la d\u00e9mence, voire \u00e0 les inverser partiellement, comme l&rsquo;expliquent D\u00fczel et ses coll\u00e8gues.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a1804\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-6\" data-orientation=\"hor\" data-index=\"6\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a190\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Plus pr\u00e9cis\u00e9ment, on pourrait par exemple s\u2019attaquer au fonctionnement des synapses en r\u00e9gulant leur activit\u00e9 excessive ou insuffisante avec des m\u00e9dicaments. Selon les scientifiques, une stimulation cibl\u00e9e de certaines zones du cerveau par des m\u00e9thodes \u00e9lectriques ou magn\u00e9tiques pourrait \u00e9galement r\u00e9duire les d\u00e9s\u00e9quilibres li\u00e9s \u00e0 la maladie d&rsquo;Alzheimer. <\/p>\n<\/div>\n<div data-hk=\"00942120a202a200\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Les premi\u00e8res \u00e9tudes cliniques men\u00e9es aupr\u00e8s de patients aux premiers stades de la maladie d&rsquo;Alzheimer ont d\u00e9j\u00e0 montr\u00e9 qu&rsquo;une telle stimulation, en particulier de l&rsquo;hippocampe, peut am\u00e9liorer de mani\u00e8re mesurable la m\u00e9moire.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a2104\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-7\" data-orientation=\"hor\" data-index=\"7\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a220\" class=\"Html-Block\" data-qa-article-content-text>\n<h2>\u00ab Nous devons mieux utiliser ces connaissances sur le plan clinique \u00bb<\/h2>\n<p>\u00ab\u00a0Le cerveau a plus de possibilit\u00e9s que nous le pensions depuis longtemps\u00a0\u00bb, explique Michael Kreutz, coll\u00e8gue de D\u00fczel. \u00ab\u00a0Mais nous commen\u00e7ons seulement \u00e0 comprendre comment nous pouvons sp\u00e9cifiquement promouvoir cela.\u00a0\u00bb Certains processus font d\u00e9j\u00e0 l\u2019objet d\u2019\u00e9tudes. <\/p>\n<\/div>\n<aside data-hk=\"00942120a202a2304\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-desktop Ad-Slot-out\">\n<div id=\"ad-slot-desktop-out-1\" data-orientation=\"out\" data-index=\"1\" data-slot=\"ad-slot\" data-device=\"desktop\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a240\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Cependant, on ne sait toujours pas clairement dans quelle mesure les performances de la m\u00e9moire peuvent \u00eatre am\u00e9lior\u00e9es au quotidien et pour qui. Les questions sur le co\u00fbt et la disponibilit\u00e9 de ces traitements restent \u00e9galement sans r\u00e9ponse.<\/p>\n<\/div>\n<aside data-hk=\"00942120a202a2504\" data-qa-ad-slot class=\"Ad-Slot Ad-Slot-mobile Ad-Slot-hor\">\n<div id=\"ad-slot-mobile-hor-8\" data-orientation=\"hor\" data-index=\"8\" data-slot=\"ad-slot\" data-device=\"mobile\"><\/div>\n<\/aside>\n<div data-hk=\"00942120a202a260\" class=\"Html-Block\" data-qa-article-content-text>\n<p>N\u00e9anmoins, les chercheurs consid\u00e8rent leurs r\u00e9sultats comme une approche prometteuse. \u00abNous devons mieux utiliser ces connaissances sur le plan clinique\u00bb, d\u00e9clare D\u00fczel. \u00ab\u00a0Il est temps d&rsquo;examiner les probl\u00e8mes de m\u00e9moire dans la maladie d&rsquo;Alzheimer au niveau des circuits et des processus informatiques. De cette fa\u00e7on, nous pouvons mieux comprendre quels processus du cerveau sont perturb\u00e9s et d\u00e9velopper et utiliser des interventions plus cibl\u00e9es.\u00a0\u00bb Cela pourrait aider \u00e0 mobiliser et \u00e0 renforcer les ressources c\u00e9r\u00e9brales restantes.<\/p>\n<\/div>\n<div data-hk=\"00942120a202a270\" class=\"Html-Block\" data-qa-article-content-text>\n<p>Par Nadja Podbregar<\/p>\n<\/div>\n<div data-hk=\"00942120a202a280\" class=\"Html-Block\" data-qa-article-content-text>\n<p><i>L&rsquo;original de cet article \u00ab\u00a0Alzheimer\u00a0: certains sympt\u00f4mes sont-ils r\u00e9versibles\u00a0?\u00a0\u00bb vient de Scinexx.<\/i><\/p>\n<\/div>\n<p><!--\/--><br \/>\n<!--$--><br \/>\n<!--\/--><br \/>\n<!--$--><br \/>\n<!--\/--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La maladie d&rsquo;Alzheimer est actuellement consid\u00e9r\u00e9e comme irr\u00e9versible : la perte de cellules c\u00e9r\u00e9brales ne<\/p>\n","protected":false},"author":1,"featured_media":15786,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[288,364,4256,16,9578,49,603,42],"class_list":["post-15785","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-maladies","tag-chercheurs","tag-decouvrent","tag-demence","tag-des","tag-dinverser","tag-les","tag-possibilite","tag-symptomes","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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