{"id":859,"date":"2015-10-26T10:39:17","date_gmt":"2015-10-26T10:39:17","guid":{"rendered":"http:\/\/synvec.fr\/?p=859"},"modified":"2019-10-06T16:28:59","modified_gmt":"2019-10-06T16:28:59","slug":"maladie-de-parkinson-nilotinib-lanticancereux-qui-rebooste-la-cognition-et-la-motricite","status":"publish","type":"post","link":"https:\/\/synvec.fr\/en\/maladie-de-parkinson-nilotinib-lanticancereux-qui-rebooste-la-cognition-et-la-motricite\/","title":{"rendered":"Maladie de PARKINSON : nilotinib, l&#8217;anticanc\u00e9reux qui rebooste la cognition et la motricit\u00e9"},"content":{"rendered":"<p>Ce petit essai clinique de l\u2019Universit\u00e9 de Georgetown dont les r\u00e9sultats viennent d\u2019\u00eatre pr\u00e9sent\u00e9s \u00e0 Neuroscience 2015, la r\u00e9union annuelle de la Society for Neuroscience (Chicago), r\u00e9v\u00e8le le nilotinib (Tasigna\u00ae), un m\u00e9dicament indiqu\u00e9 dans le traitement de la leuc\u00e9mie my\u00e9lo\u00efde chronique (LMC) comme efficace pour am\u00e9liorer la cognition et la motricit\u00e9 chez certains patients parkinsoniens. Alors que le m\u00e9dicament est d\u00e9j\u00e0 approuv\u00e9, ces donn\u00e9es ouvrent un espoir \u00e0 court terme pour les patients atteints et leur famille.<\/p>\n<p>C\u2019est un petit essai de phase I, d\u2019une dur\u00e9e de 6 mois, de doses croissantes de nilotinib (150 \u00e0 300 mg par jour), men\u00e9 sur 11 patients atteints de la maladie de Parkinson, montre sur 10 d\u2019entre eux des am\u00e9liorations cliniques significatives\u00a0:<\/p>\n<p><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\">&#8211;\u00a0<\/span><\/span><\/span>l\u2019efficacit\u00e9 sur la cognition, la motricit\u00e9 et l\u2019am\u00e9lioration d\u2019autres fonctions (constipation) est observ\u00e9e chez la majorit\u00e9 des patients et de mani\u00e8re \u00a0\u00bb\u00a0spectaculaire\u00a0\u00a0\u00bb\u00a0: ainsi, un patient, en fauteuil roulant s\u2019est montr\u00e9 capable de remarcher. 3 autres patients ont retrouv\u00e9 une fluidit\u00e9 de la parole. Le taux de chutes est \u00e9galement r\u00e9duit.<\/p>\n<p>Ces am\u00e9liorations des sympt\u00f4mes sont corrobor\u00e9es par l\u2019observation d\u2019\u00e9volutions positives dans le liquide c\u00e9phalo-rachidien (LCR) de biomarqueurs connus de la maladie de Parkinson (\u03b1-synucl\u00e9ine, b\u00eata-amylo\u00efde et tau, dopamine).<\/p>\n<p>Le Dr Charbel Moussa, directeur du Laboratoire sur la d\u00e9mence et la maladie de Parkinson de Georgetown \u00e0 l\u2019origine de cette d\u00e9couverte des b\u00e9n\u00e9fices du nilotinib dans le traitement des maladies neurod\u00e9g\u00e9n\u00e9ratives sugg\u00e8re que le traitement semble pouvoir inverser \u00e0 un degr\u00e9 d\u00e9pendant du stade de la maladie, le d\u00e9clin cognitif et moteur chez les patients atteints de maladies neurod\u00e9g\u00e9n\u00e9ratives.<\/p>\n<p><strong>De premiers signaux tr\u00e8s prometteurs: <\/strong>S\u2019il reste certes \u00e0 mener des \u00e9tudes plus vastes, avec groupe t\u00e9moin, avant confirmer ces effets positifs, cependant les premiers signaux sont prometteurs, \u00e0 plus d\u2019un titre\u00a0:<\/p>\n<p><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\">&#8211;<span style=\"font-weight: inherit; font-style: inherit;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span>En particulier, le traitement induit une augmentation de la production de dopamine chez de nombreux patients, permettant, dans certains cas de r\u00e9duire leurs doses de L-dopa ou d\u2019autres m\u00e9dicaments dopaminergiques.<\/p>\n<p><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\">&#8211;<span style=\"font-weight: inherit; font-style: inherit;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span>De plus, cette utilisation du nilotinib, \u00e0 des doses beaucoup plus faibles que pour le traitement de la LMC n\u2019entraine pas d\u2019effets secondaires s\u00e9v\u00e8res.<\/p>\n<p><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\">&#8211;<span style=\"font-weight: inherit; font-style: inherit;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span>le m\u00e9dicament p\u00e9n\u00e8tre dans la barri\u00e8re h\u00e9mato-enc\u00e9phalique en quantit\u00e9s sup\u00e9rieures aux m\u00e9dicaments dopaminergiques.<\/p>\n<p><span style=\"font-weight: inherit; font-style: inherit;\"><span style=\"font-weight: inherit; font-style: inherit;\">&#8211;<span style=\"font-weight: inherit; font-style: inherit;\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span><\/span><\/span>Enfin, ici \u00e0 \u00a0\u00bb\u00a0petite\u00a0\u00a0\u00bb dose, le nilotinib induit une autophagie cellulaire suffisante pour \u00a0\u00bb\u00a0nettoyer\u00a0\u00a0\u00bb les cellules du cerveau sans entra\u00eener leur mort (comme c\u2019est en revanche le cas, pour les cellules canc\u00e9reuses, lorsqu\u2019il est utilis\u00e9 \u00e0 plus fortes doses dans le traitement de la LMC).<\/p>\n<p><em>Seul b\u00e9mol, c\u2019est un traitement cher, soit plus de 10.000 $\/ mois pour 800 mg par jour (dose pour LMC). La dose utilis\u00e9e dans cette \u00e9tude \u00e9tait de 150 et 300 mg par jour.<\/em><\/p>\n<p>Etude \/\u00a0Neuroscience 2015 17-Oct-2015 Communiqu\u00e9 Cancer drug improved cognition and motor skills in small Parkinson\u2019s clinical trial (Visuel@ Georgetown University)<\/p>","protected":false},"excerpt":{"rendered":"<p>Ce petit essai clinique de l\u2019Universit\u00e9 de Georgetown dont les r\u00e9sultats viennent d\u2019\u00eatre pr\u00e9sent\u00e9s \u00e0 Neuroscience 2015, la r\u00e9union annuelle de la Society for Neuroscience (Chicago), r\u00e9v\u00e8le le nilotinib (Tasigna\u00ae), un m\u00e9dicament indiqu\u00e9 dans le traitement de la leuc\u00e9mie my\u00e9lo\u00efde&#8230;<\/p>\n","protected":false},"author":1,"featured_media":860,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Maladie de PARKINSON : nilotinib, l&#039;anticanc\u00e9reux qui rebooste la cognition et la motricit\u00e9 - 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