{"id":1594,"date":"2023-07-27T15:17:54","date_gmt":"2023-07-27T13:17:54","guid":{"rendered":"https:\/\/rhu-shiva.com\/fr\/?p=1594"},"modified":"2023-08-01T17:17:26","modified_gmt":"2023-08-01T15:17:26","slug":"shiva-a-la-reunion-annuelle-de-lorganization-for-human-brain-mapping-ohbm-2023","status":"publish","type":"post","link":"https:\/\/rhu-shiva.com\/fr\/blog\/2023\/07\/27\/shiva-a-la-reunion-annuelle-de-lorganization-for-human-brain-mapping-ohbm-2023\/","title":{"rendered":"SHIVA \u00e0 la R\u00e9union annuelle de \u00ab\u00a0l’Organization for Human Brain Mapping\u00a0\u00bb (OHBM) 2023"},"content":{"rendered":"\n

Les membres du projet RHU SHIVA ont particip\u00e9 \u00e0 la 29\u00e8me<\/sup> r\u00e9union annuelle de l’Organisation pour la cartographie du cerveau humain (OHBM)<\/a> 2023 qui s’est d\u00e9roul\u00e9e \u00e0 Montr\u00e9al du 22 au 26 juillet 2023.<\/p>\n\n\n\n

<\/div>\n\n\n\n
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Dr Ami TSUCHIDA<\/strong>, chercheure du projet SHIVA dans le groupe de Neuroimagerie fonctionnelle, a particip\u00e9 \u00e0 cette conf\u00e9rence OHBM avec la pr\u00e9sentation d’un poster sur la caract\u00e9risation des marqueurs de la maladies de petites art\u00e8res c\u00e9r\u00e9brales occulte dans la cohorte MRi-Share.<\/a><\/strong><\/p>\n\n\n\n

–> Description des 2 marqueurs pr\u00e9dominants de la maladie des petites art\u00e8res c\u00e9r\u00e9brales dans une grande cohorte de jeunes adultes de l’\u00e9tude MRi-Share (N = 1831 \u00e2g\u00e9s entre 18 et 35 ans) : les hypersignaux de la substance blanche<\/strong> et les espaces p\u00e9rivasculaires<\/strong>.<\/p>\n\n\n\n

–> Une charge importante en hypersignaux de la substance blanche et en espaces p\u00e9rivasculaires est associ\u00e9e avec une augmentation du \u00ab\u00a0peak width skeletonized mean diffusivity (PSMD) et l’index de densit\u00e9 en neurite (NDI).<\/p>\n\n\n\n

–> Bien qu’il y ait peu de marqueurs de la maladie des petites art\u00e8res c\u00e9r\u00e9brales, ils sont d\u00e9j\u00e0 associ\u00e9s \u00e0 des signes des modifications de l’int\u00e9grit\u00e9 de la substance blanche chez les jeunes adultes neurologiquement asymptomatiques.<\/strong><\/p>\n<\/div><\/div>\n\n\n\n

<\/div>\n\n\n\n
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\n

Dr<\/strong> Frauke BEYER<\/strong>, post-doctorante au sein du Consortium SHIVA, a contribu\u00e9 \u00e0 cette conf\u00e9rence OHBM avec la pr\u00e9sentation d’un poster portant sur les patterns spatiaux des hypersignaux de la substance blanche (alt\u00e9ration localis\u00e9e de la substance blanche du cerveau, signe sur IRM de maladie des petites art\u00e8res c\u00e9r\u00e9brales) et leur lien avec le risque cardiovasculaire et la cognition dans deux cohortes : la cohorte fran\u00e7aise 3-Cit\u00e9s<\/a> et l’\u00e9tude allemande LIFE-ADULT<\/a>.<\/strong><\/p>\n\n\n\n

Les r\u00e9sultats de ces travaux montrent que les hypersignaux de la substance blanche frontaux-p\u00e9riventriculaires sont davantage li\u00e9s \u00e0 l’hypertension alors que les hypersignaux de la substance blanche sont li\u00e9s \u00e0 l’ob\u00e9sit\u00e9<\/strong>. Cela pourrait aider \u00e0 l’identification des diff\u00e9rents m\u00e9canismes en jeu lors du d\u00e9veloppement de ces hypersignaux.<\/p>\n\n\n\n

Les patterns spatiaux refl\u00e8tent les associations connues des hypersignaux de la substance blanche avec les facteurs de risque et les profils cognitifs mais ils permettent \u00e9galement d’identifier des effets sp\u00e9cifiques, possiblement li\u00e9s \u00e0 diff\u00e9rentes \u00e9tiologies.<\/p>\n<\/div><\/div>\n\n\n\n

<\/div>\n\n\n\n
\n
Voir le poster complet du Dr Beyer<\/a><\/div>\n\n\n\n
Ecouter la pr\u00e9sentation orale du poster de Frauke (en anglais)<\/a><\/div>\n\n\n\n
Voir le poster complet du Dr Tsuchida<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Les membres du projet RHU SHIVA ont particip\u00e9 \u00e0 la 29\u00e8me r\u00e9union annuelle de l’Organisation pour la cartographie du cerveau humain (OHBM) 2023 qui s’est d\u00e9roul\u00e9e [\u2026]<\/span><\/p>\n","protected":false},"author":4,"featured_media":1605,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"yoast_head":"\nSHIVA \u00e0 la R\u00e9union annuelle de "l'Organization for Human Brain Mapping" (OHBM) 2023 | RHU SHIVA<\/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:\/\/rhu-shiva.com\/fr\/blog\/2023\/07\/27\/shiva-a-la-reunion-annuelle-de-lorganization-for-human-brain-mapping-ohbm-2023\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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