{"id":308698,"date":"2019-08-01T10:03:19","date_gmt":"2019-08-01T07:03:19","guid":{"rendered":"https:\/\/kinsta.unitedwithisrael.org\/?p=308698"},"modified":"2019-08-01T16:22:46","modified_gmt":"2019-08-01T13:22:46","slug":"une-technologie-israelienne-revolutionne-lirm","status":"publish","type":"post","link":"https:\/\/kinsta.unitedwithisrael.org\/fr\/une-technologie-israelienne-revolutionne-lirm\/","title":{"rendered":"Une technologie isra\u00e9lienne r\u00e9volutionne l’IRM"},"content":{"rendered":"

Une nouvelle technique d’IRM mise au point par des chercheurs de l’Universit\u00e9 h\u00e9bra\u00efque fournit aux utilisateurs une carte mol\u00e9culaire du cerveau.<\/strong><\/em><\/p>\n

Par Naama Barak, ISRAEL21c<\/em><\/p>\n

L\u2019IRM, ou imagerie par r\u00e9sonance magn\u00e9tique, fournit d\u00e9j\u00e0 un travail assez \u00e9tonnant qui nous donne une meilleure id\u00e9e de ce qui se passe \u00e0 l\u2019int\u00e9rieur. Mais elle est sur le point de faire un travail encore plus \u00e9tonnant, aidant les m\u00e9decins \u00e0 d\u00e9celer plus rapidement le d\u00e9but des maladies neurod\u00e9g\u00e9n\u00e9ratives.<\/p>\n

Une \u00e9quipe de chercheurs de l’Universit\u00e9 h\u00e9bra\u00efque de J\u00e9rusalem, dirig\u00e9e par le Dr Aviv Mezer, a trouv\u00e9 un moyen pour que l’IRM puisse enregistrer les changements dans la constitution biologique du tissu c\u00e9r\u00e9bral. Leurs conclusions ont \u00e9t\u00e9 publi\u00e9es dans Nature Communications.<\/p>\n

\u00abAu lieu d\u2019images, notre mod\u00e8le d\u2019IRM quantitatif fournit des informations mol\u00e9culaires sur le tissu c\u00e9r\u00e9bral que nous \u00e9tudions. Cela pourrait permettre aux m\u00e9decins de comparer les scanners c\u00e9r\u00e9braux effectu\u00e9s au fil du temps chez le m\u00eame patient et de faire la diff\u00e9rence entre un tissu c\u00e9r\u00e9bral sain et malade, sans recourir \u00e0 des proc\u00e9dures invasives ou dangereuses telles que des biopsies du tissu c\u00e9r\u00e9bral<\/em> \u00bb, a expliqu\u00e9 Mezer.<\/p>\n

Cette capacit\u00e9 est particuli\u00e8rement importante pour comprendre si un patient vieillit ou est atteint d\u2019une maladie telle que la maladie d\u2019Alzheimer ou de Parkinson.<\/p>\n

Le vieillissement normal et les maladies neurod\u00e9g\u00e9n\u00e9ratives cr\u00e9ent des \u00abempreintes<\/em>\u00bb biologiques dans le cerveau, modifiant ainsi le contenu en lipides et en prot\u00e9ines du tissu c\u00e9r\u00e9bral. Alors que les examens IRM existants ne fournissent que des images du cerveau humain, la nouvelle technique permet une lecture biologique des tissus c\u00e9r\u00e9braux, ce qui permet de voir ce qui se passe au niveau mol\u00e9culaire et de diriger le traitement en cons\u00e9quence.<\/p>\n

Cela signifie que les patients recevront probablement les diagnostics corrects plus t\u00f4t, ce qui acc\u00e9l\u00e9rera le d\u00e9but de leur traitement et leur offrira une meilleure qualit\u00e9 de vie.<\/p>\n

Pour l’avenir, Mezer pense que la nouvelle technique d’IRM fournira \u00e9galement une compr\u00e9hension cruciale du vieillissement de notre cerveau.<\/p>\n

\u00abLorsque nous avons examin\u00e9 le cerveau des patients jeunes et \u00e2g\u00e9s, nous avons constat\u00e9 que diff\u00e9rentes zones du cerveau vieillissaient diff\u00e9remment. Par exemple, dans certaines zones de mati\u00e8re blanche, le volume des tissus c\u00e9r\u00e9braux diminue, alors que dans la substance grise, le volume des tissus reste constant. Cependant, nous avons observ\u00e9 des changements majeurs dans la composition mol\u00e9culaire de la mati\u00e8re grise chez les sujets plus jeunes par rapport aux sujets plus \u00e2g\u00e9s<\/em> \u00bb, a-t-il d\u00e9clar\u00e9.<\/p>\n

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Une nouvelle technique d’IRM mise au point par des chercheurs de l’Universit\u00e9 h\u00e9bra\u00efque fournit aux utilisateurs une carte mol\u00e9culaire du cerveau. Par Naama Barak, ISRAEL21c L\u2019IRM, ou imagerie par r\u00e9sonance magn\u00e9tique, fournit d\u00e9j\u00e0 un travail assez \u00e9tonnant qui nous donne une meilleure id\u00e9e de ce qui se passe \u00e0 l\u2019int\u00e9rieur. Mais elle est sur le… Read more »<\/a><\/p>\n","protected":false},"author":4242,"featured_media":245885,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[28414],"tags":[35278,34248,35277,35279,29798,29783],"class_list":["post-308698","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-influence-israelienne","tag-examen","tag-innovation-fr","tag-irm","tag-maladies","tag-medecine","tag-sante"],"better_featured_image":{"id":245885,"alt_text":"","caption":"MRI room at the Shaare Tzedek hospital. 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