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{"id":18451,"date":"2022-03-16T09:27:09","date_gmt":"2022-03-16T09:27:09","guid":{"rendered":"https:\/\/amslabo.com\/?post_type=product&p=18451"},"modified":"2022-05-10T14:00:29","modified_gmt":"2022-05-10T14:00:29","slug":"distribution-ponderale-dynamique-2-0","status":"publish","type":"product","link":"https:\/\/amslabo.com\/product\/distribution-ponderale-dynamique-2-0","title":{"rendered":"Distribution Pond\u00e9rale Dynamique 2.0"},"content":{"rendered":"

Pour des raisons \u00e9thiques et afin d\u2019\u00e9tudier le niveau d\u2019inconfort ou douleur \u00e9voqu\u00e9e des rongeurs, des tests permettant l\u2019\u00e9valuation de la douleur sans provoquer de stimulus sur les animaux ont \u00e9t\u00e9 d\u00e9velopp\u00e9s. Ces tests dits \u00ab d\u2019incapacitance \u00bb permettent la mesure de la r\u00e9partition du poids sur les 2 pattes arri\u00e8re des rongeurs en contention, impliquant un niveau de stress \u00e9lev\u00e9 pour les animaux.<\/span><\/p>\n

Depuis son lancement en 2008, le test de distribution pond\u00e9rale dynamique DWB est le seul test d\u2019\u00e9valuation de la douleur \u00e9voqu\u00e9e des rongeurs permettant de s\u2019affranchir de cette contention des animaux. Il est aussi le seul instrument capable de mesurer avec pr\u00e9cision l\u2019\u00e9volution de la posture des rongeurs par la mesure de r\u00e9partition du poids sur chacune de leurs 4 pattes.<\/p>\n

Ainsi, le DWB permet de travailler avec des animaux libres de leurs d\u00e9placements dans une ar\u00e8ne de dimensions adapt\u00e9es aux rats ou \u00e0 la souris. Cela permet de r\u00e9duire consid\u00e9rablement le niveau de stress li\u00e9 \u00e0 la contention de l\u2019animal et d\u2019am\u00e9liorer ainsi la fiabilit\u00e9 des r\u00e9sultats.<\/p>\n

Valid\u00e9 par plus d\u2019une trentaine de publications, cet instrument a permis de r\u00e9pondre \u00e0 de nombreuses interrogations dans les mod\u00e8les de douleurs non \u00e9voqu\u00e9es, neuropathiques, inflammatoires ou encore osth\u00e9oartritiques. Plus r\u00e9cemment, le cadre d\u2019utilisation du DWB a d\u00e9pass\u00e9 les mod\u00e8les de douleur et l\u2019analyse de la posture s\u2019est av\u00e9r\u00e9 id\u00e9ale pour l\u2019\u00e9tude de troubles osseux (fractures, cancers, arthrose..), de diff\u00e9rents probl\u00e8mes du syst\u00e8me nerveux central (isch\u00e9mies) ou encore du syst\u00e8me vestibulaire (vertige).<\/p>\n

icone-oper.gifPrincipe de fonctionnement<\/p>\n

L\u2019animal est plac\u00e9 dans la cage du DWB (Dynamic Weight Bearing) sur une dur\u00e9e d\u2019environ 5 minutes.<\/p>\n

Durant le test, le DWB couple l\u2019utilisation de deux technologies :<\/p>\n

\u2022 Une matrice d\u2019environ 2000 capteurs de force de grande pr\u00e9cision (0.02g chez la souris et 0.15g chez la souris) : Cette matrice constitue le sol de la cage sur lequel l\u2019animal \u00e9volue librement. Les capteurs permettent la mesure en grammes de la r\u00e9partition du poids des animaux sur chacune de leurs 4 pattes. L\u2019appareil utilise sp\u00e9cifiquement des capteurs pour rats ou pour souris avec un niveau de sensibilit\u00e9 adapt\u00e9 (de 0 \u00e0 4g chez la souris et de 0 \u00e0 40g chez le rats).<\/p>\n

\u2022 Un suivi vid\u00e9o de l\u2019animal : L\u2019animal est film\u00e9 par-dessus gr\u00e2ce \u00e0 une cam\u00e9ra haute r\u00e9solution. La vid\u00e9o est analys\u00e9e en temps r\u00e9el lors du test par un logiciel de tracking permettant une analyse pr\u00e9cise de la morphologie de l\u2019animal.<\/p>\n

Le logiciel est donc capable d\u2019analyser pr\u00e9cis\u00e9ment la position de l\u2019animal durant l\u2019ensemble du test afin d\u2019identifier automatiquement la position des 4 pattes sur les capteurs de force.<\/p>\n

L\u2019acquisition des informations provenant des capteurs de force et de la cam\u00e9ra se faisant \u00e0 haute fr\u00e9quence (30 htz), le DWB est capable d\u2019analyser les changements de positions rapides des animaux permettant des mesures compl\u00e8tes afin d\u2019analyser pr\u00e9cis\u00e9ment l\u2019\u00e9volution de la posture des animaux immobiles ou en mouvements.<\/p>\n","protected":false},"excerpt":{"rendered":"

Un syst\u00e8me permettant l’analyse de la posture des animaux par la r\u00e9partition du poids sur chacune des 4 pattes. Le DWB est un test unique dans l’\u00e9tude de nombreux mod\u00e8les de douleurs, principalement non \u00e9voqu\u00e9e , neuropathique ou encore inflammatoire ainsi que pour les \u00e9tudes sur l’osth\u00e9oarthrite et divers affections du SNC.<\/span><\/p>\n

Le nouvelle version DWB2 int\u00e8gre une nouvelle interface logiciel plus simple avec gestion des listes d’animaux ainsi que de nouveaux algorithmes d’analyse automatique de la posture.<\/p>\n","protected":false},"featured_media":18452,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":""},"product_cat":[903],"product_tag":[],"class_list":["post-18451","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-deficit-de-posture","desktop-align-left","tablet-align-left","mobile-align-left","ast-product-gallery-layout-horizontal-slider","ast-product-gallery-with-no-image","ast-product-tabs-layout-horizontal"],"acf":[],"_links":{"self":[{"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/product\/18451","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/comments?post=18451"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/media\/18452"}],"wp:attachment":[{"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/media?parent=18451"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/product_cat?post=18451"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/amslabo.com\/wp-json\/wp\/v2\/product_tag?post=18451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}