{"id":50,"date":"2018-12-04T23:31:46","date_gmt":"2018-12-04T23:31:46","guid":{"rendered":"http:\/\/soignant.reseau-amylose.org\/?page_id=27"},"modified":"2023-12-19T12:26:38","modified_gmt":"2023-12-19T11:26:38","slug":"le-point-sur-les-amyloses","status":"publish","type":"page","link":"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/","title":{"rendered":"Le point sur les amyloses"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"50\" class=\"elementor elementor-50\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4ad28ca4 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4ad28ca4\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b2d7c07\" data-id=\"b2d7c07\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6822c70b elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6822c70b\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4bbe292 elementor-widget elementor-widget-heading\" data-id=\"4bbe292\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h6 class=\"elementor-heading-title elementor-size-default\"><h2 class=\"elementor-heading-title elementor-size-large elementor-inline-editing pen\" data-elementor-setting-key=\"title\" data-pen-placeholder=\"\u00c9crivez ici...\">Les amyloses cardiaques<\/h2><\/h6>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-79d96b62 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"79d96b62\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-25cb506f\" data-id=\"25cb506f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1edfcb0a elementor-widget elementor-widget-text-editor\" data-id=\"1edfcb0a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><strong><span style=\"color: #4db8f0\">Les amyloses cardiaques<\/span><\/strong><\/h5><h6>L\u2019amylose est la manifestation de plusieurs maladies syst\u00e9miques <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24070600\/\" target=\"_blank\" rel=\"noopener\">(article Mohty D et al ACVD)<\/a>.<\/h6><h6>La caract\u00e9ristique commune de ces maladies est une accumulation extracellulaire de prot\u00e9ines fibrillaires insolubles qui se d\u00e9posent et envahissent progressivement les tissus emp\u00eachant leur bon fonctionnement. L\u2019infiltration amylo\u00efde cardiaque est responsable d\u2019un \u00e9paississement du myocarde cr\u00e9ant une \u00ab hypertrophie \u00bb.<\/h6><h6>Cette infiltration se complique d\u2019insuffisance cardiaque et de trouble de la conduction. Tout ceci explique pourquoi le cardiologue est en premi\u00e8re position pour faire le diagnostic de cardiopathie amylo\u00efde. Malheureusement ce diagnostic est souvent \u00e9voqu\u00e9 tardivement apr\u00e8s un diagnostic initial \u00ab d\u2019insuffisance cardiaque \u00e0 Fraction d&rsquo;\u00c9jection Ventriculaire Gauche (FEVG) pr\u00e9serv\u00e9e \u00bb ou de \u00ab cardiopathie hypertensive \u00bb.<\/h6><h6>Afin d\u2019am\u00e9liorer l\u2019orientation diagnostique devant une cardiomyopathie et de d\u00e9passer ces simples diagnostics, la Soci\u00e9t\u00e9 Europ\u00e9enne de Cardiologie (ESC) a r\u00e9cemment revu la d\u00e9finition et la classification des cardiomyopathies.<\/h6><h6>Les cardiomyopathies hypertrophiques (CMH) sont d\u00e9finies d\u00e9sormais par un simple \u00e9paississement du myocarde regroupant ainsi sous le terme CMH des processus physiopathologiques tr\u00e8s diff\u00e9rents allant d\u2019une hypertrophie des cardiomyocytes observ\u00e9e dans les CMH sarcom\u00e9riques (mutation troponine, myosine\u2026) \u00e0 l\u2019infiltration du myocarde.<\/h6><h5>\u00a0<\/h5><h6>\u00a0<\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-07b3721 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"07b3721\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/www.reseau-amylose.org\/jesuissoignant\/documentation\/triptyques-du-centre-de-reference-des-amyloses-cardiaques-chu-henri-mondor\/\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">T\u00e9l\u00e9chargez le triptyque destin\u00e9 aux cardiologues - Amyloses cardiaques<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-69aa290 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"69aa290\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-33 elementor-top-column elementor-element elementor-element-c67e98f\" data-id=\"c67e98f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b22889e elementor-widget elementor-widget-text-editor\" data-id=\"b22889e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #4db8f0\"><strong>Quand penser a\u0300 l\u2019amylose?<\/strong><\/span><\/h5><h6><span style=\"color: #000000\">Devant toute CMH<\/span> (<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17916581\/\" target=\"_blank\" rel=\"noopener\"><em>Elliot P,Eur Heart J 2008;<\/em><\/a><span style=\"color: #17375e;font-size: 7pt;font-family: Calibri;font-style: italic\">\u00a0<\/span><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17916581\/\" target=\"_blank\" rel=\"noopener\">Classification of cardiomyopathies; position statement ESC<\/a>).<\/h6><h6><span style=\"color: #000000\">Devant une Insuffisance Cardiaque a\u0300 FEVG pre\u0301serve\u0301e<\/span><\/h6><h6><span style=\"color: #000000\">Devant une Insuffisance Cardiaque a\u0300 FEVG alte\u0301re\u0301e avec hypertrophie myocardique<\/span><\/h6><h6><span style=\"color: #000000\">Devant toute hypertrophie myocardique symptomatique<\/span><\/h6><h6><span style=\"color: #000000\">Devant Hypertrophie Ventriculaire Gauche (HVG) avec BSA3 ou BAV2-3 ou FA ou flutter<\/span><\/h6><h6><span style=\"color: #000000\">Devant un R\u00e9tr\u00e9cissement de la Valve Aortique avec Hypertrophie Ventriculaire Gauche ou bas de\u0301bit, bas gradient<\/span><\/h6><h5>\u00a0<\/h5><h5><span style=\"color: #4db8f0\"><strong>Pourquoi de\u0301pister l\u2019amylose?<\/strong><\/span><\/h5><h6><span style=\"color: #000000\">Pronostic se\u0301ve\u0300re a\u0300 court terme en l\u2019absence de traitement<\/span><\/h6><h6><span style=\"color: #000000\">Des traitements spe\u0301cifiques<\/span><\/h6><h6><span style=\"color: #000000\">Une prise en charge cardiologique diffe\u0301rente par rapport a\u0300 une insuffisance cardiaque classique<\/span><\/h6><h5>\u00a0<\/h5><h5><span style=\"color: #4db8f0\"><strong>Pourquoi un centre de re\u0301fe\u0301rence ?<\/strong><\/span><\/h5><h6><span style=\"color: #000000\">Inte\u0301re\u0302t d\u2019une prise en charge multidisciplinaire spe\u0301cialise\u0301e<\/span><\/h6><h6><span style=\"color: #000000\">Acce\u0300s rapide aux soins , tous pre\u0301sents sur un me\u0302me site<\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-66 elementor-top-column elementor-element elementor-element-ed7147a\" data-id=\"ed7147a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-70434f2 elementor-widget elementor-widget-image\" data-id=\"70434f2\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/reseau-amylose.org\/jesuissoignant\/storage\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1.png\" target=\"_blank\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"721\" height=\"1024\" src=\"http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-721x1024.png\" class=\"attachment-large size-large wp-image-5967\" alt=\"\" srcset=\"http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-721x1024.png 721w, http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-211x300.png 211w, http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-768x1091.png 768w, http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1.png 1074w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-243cd01f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"243cd01f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-39438260\" data-id=\"39438260\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6d8ef3ef elementor-widget elementor-widget-video\" data-id=\"6d8ef3ef\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=ZIDq2z8ZQ-M&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-101a3b42 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"101a3b42\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6e5f50cb\" data-id=\"6e5f50cb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6e5a01a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"6e5a01a\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-530aec4f elementor-widget elementor-widget-text-editor\" data-id=\"530aec4f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #4db8f0\"><strong>Classification des amyloses<\/strong><\/span><\/h5><h6>La classification des amyloses repose sur la nature biochimique de la prot\u00e9ine amylo\u00efde impliqu\u00e9e dans la formation des d\u00e9p\u00f4ts. Une vingtaine de prot\u00e9ines peuvent former des fibrilles amylo\u00efdes (Fibrinog\u00e8ne, apo A1\u2026). Les formes cardiaques les plus fr\u00e9quentes sont les amyloses AL (immunoglobuliniques) et les amyloses \u00e0 transthyr\u00e9tine (TTR) : h\u00e9r\u00e9ditaire (TTR mut\u00e9e) ou s\u00e9nile (TTR sauvage).<\/h6><section class=\"elementor-element elementor-element-d9d5728 elementor-section-boxed elementor-section-height-default elementor-section-height-default elementor-section elementor-top-section\" data-id=\"d9d5728\" data-element_type=\"section\"><div class=\"elementor-container elementor-column-gap-default\"><div class=\"elementor-row\"><div class=\"elementor-element elementor-element-dd4f4f6 elementor-column elementor-col-100 elementor-top-column\" data-id=\"dd4f4f6\" data-element_type=\"column\"><div class=\"elementor-column-wrap elementor-element-populated\"><div class=\"elementor-widget-wrap\"><div class=\"elementor-element elementor-element-af00c61 elementor-widget elementor-widget-text-editor\" data-id=\"af00c61\" data-element_type=\"text-editor.default\"><div class=\"elementor-widget-container\"><div class=\"elementor-text-editor elementor-clearfix\"><table border=\"2\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td width=\"200\"><h5><strong>Type d\u2019amylose<\/strong><\/h5><\/td><td width=\"185\"><h5><strong>Amylose AL<\/strong><\/h5><\/td><td colspan=\"2\" width=\"190\"><h5><strong>Amylose \u00e0 transthyr\u00e9tine<\/strong><\/h5><\/td><td width=\"190\"><h5><strong>Amylose AA<\/strong><\/h5><\/td><\/tr><tr><td width=\"200\"><h5><strong>\u00a0<\/strong><\/h5><\/td><td width=\"185\"><h5><strong>\u00a0<\/strong><\/h5><\/td><td width=\"190\"><h5><strong>\u00a0H\u00e9r\u00e9ditaire<\/strong><\/h5><\/td><td width=\"190\"><h5><strong>S\u00e9nile<\/strong><\/h5><\/td><td width=\"190\"><h5><strong>\u00a0<\/strong><\/h5><\/td><\/tr><tr><td><h5><strong>\u00a0D\u00e9pots<\/strong><\/h5><\/td><td><h5>Cha\u00eenes l\u00e9g\u00e8res d\u2019Ig(Kappa ou Lambda)<\/h5><\/td><td><h5>Transthyr\u00e9tine mut\u00e9e<\/h5><\/td><td><h5>Transthyr\u00e9tine sauvage<\/h5><\/td><td><h5>Prot\u00e9ine inflammatoire<\/h5><\/td><\/tr><tr><td><h5><strong>\u00a0Source<\/strong><\/h5><\/td><td><h5>Moelle osseuse<\/h5><\/td><td><h5>Foie<\/h5><\/td><td><h5>Foie<\/h5><\/td><td><h5>Prot\u00e9ine inflammatoire<\/h5><\/td><\/tr><tr><td><h5><strong>Organes atteints<\/strong><\/h5><\/td><td><h5>Coeur, rein, foie, syst\u00e8me nerveux<\/h5><\/td><td><h5>Syst\u00e8me nerveux p\u00e9riph\u00e9rique, coeur<\/h5><\/td><td><h5>Coeur<\/h5><\/td><td><h5>Rein, Foie<\/h5><\/td><\/tr><\/tbody><\/table><h5>\u00a0\u00a0<strong>Sources, type de d\u00e9p\u00f4ts et organes atteintes dans les quatres types principaux d\u2019amylose<\/strong><\/h5><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-63ad12ff elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"63ad12ff\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1714788d\" data-id=\"1714788d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1c9e8fe1 elementor-widget elementor-widget-text-editor\" data-id=\"1c9e8fe1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h5><span style=\"color: #4db8f0\"><strong>Les amyloses AL<\/strong><\/span><\/h5>\n<h6>Les amyloses AL sont li\u00e9es principalement aux gammapathies monoclonales (MGUS) ou au my\u00e9lome. Les gammapathies monoclonales sont tr\u00e8s fr\u00e9quentes et touchent environ 10% des patients de 60 ans. Ces gammapathies se compliquent heureusement rarement d\u2019amylose mais repr\u00e9sentent plus de 60% des cardiopathies amylo\u00efdes.<\/h6>\n<h6><\/h6>\n<h5><span style=\"color: #4db8f0\"><strong>Les amyloses \u00e0 transthyr\u00e9tine<\/strong><\/span><\/h5>\n<h6>La transthyr\u00e9tine (TTR) est une prot\u00e9ine synth\u00e9tis\u00e9e par le foie sous forme de monom\u00e8re. Ces monom\u00e8res s\u2019assemblent en t\u00e9tram\u00e8res qui transportent des prot\u00e9ines (ex : hormone thyro\u00efdienne, vitamine D) dans le sang. Les amyloses TTR sont de deux types :<\/h6>\n<h6 style=\"padding-left: 30px\"><em>1\/ <strong>Amylose \u00e0 transthyr\u00e9tine<\/strong> <b>dite \u00ab s\u00e9nile \u00bb<\/b>\u00a0<b>ou\u00a0<\/b><\/em><b><em>\u00ab\u00a0<\/em><em style=\"color: inherit\">sauvage\u00a0<\/em><em>\u00bb\u00a0<\/em><\/b><em style=\"color: inherit\">o\u00f9 le pr\u00e9curseur est la transthyr\u00e9tine non-mut\u00e9e (ATTRwt) survenant quasi-exclusivement chez des hommes \u00e2g\u00e9s. <a href=\"https:\/\/www.em-consulte.com\/en\/article\/816196\">(article Damy T et al, Senile systemic amyloidosis)<\/a>. Les m\u00e9canismes de cette amylose ne sont pas connus.<\/em><\/h6>\n<h6 style=\"padding-left: 30px\"><em>2\/ <strong>Amylose \u00e0 transthyr\u00e9tine h\u00e9r\u00e9ditaire<\/strong>, la forme familiale o\u00f9 la transthyr\u00e9tine est mut\u00e9e (ATTRm) <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24070600\/\" target=\"_blank\" rel=\"noopener\">(article Mohty D et al, cardiac amyloidosis)<\/a>.<\/em><\/h6>\n<h6>La transmission est autosomique dominante. Plus de 120 mutations pathog\u00e8nes du g\u00e8ne codant pour la TTR ont \u00e9t\u00e9 identifi\u00e9es. Les d\u00e9p\u00f4ts tissulaires comportent \u00e9galement de la transthyr\u00e9tine non mut\u00e9e. Bien qu\u2019h\u00e9r\u00e9ditaire, on ne retrouve des ant\u00e9c\u00e9dents familiaux que dans 50% des cas. L\u2019atteinte tissulaire est variable suivant la mutation.<\/h6>\n<h6>La mutation ATTR Val122Ile est la plus fr\u00e9quente. Cette mutation est pr\u00e9sente chez 3,9% des patients d&rsquo;origine africaine (<a style=\"background-color: #ffffff\" href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9017939\/\" target=\"_blank\" rel=\"noopener\">article Jacobson DR et al, variant-sequence transthyretinin late-onset cardiac amyloidosis in black Americans)<\/a><span>. La p\u00e9n\u00e9trance de ces mutations est variable suivant le fond g\u00e9n\u00e9tique et la mutation. Les cas sporadiques se r\u00e9v\u00e8lent g\u00e9n\u00e9ralement tardivement, c.\u00e0.d. apr\u00e8s 50-60 ans.\u00a0\u00a0<\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3777e0a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3777e0a\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-61978a2\" data-id=\"61978a2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a6b31de elementor-align-center elementor-widget elementor-widget-button\" data-id=\"a6b31de\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/www.reseau-amylose.org\/jesuissoignant\/documentation\/triptyques-du-centre-de-reference-des-amyloses-cardiaques-chu-henri-mondor\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">T\u00e9l\u00e9chargez le Triptyque Amyloses h\u00e9r\u00e9ditaires cardiologiques ATTR Val122Ile<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-064ca85 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"064ca85\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-27df161\" data-id=\"27df161\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-40a9a6c elementor-widget elementor-widget-text-editor\" data-id=\"40a9a6c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6><span style=\"color: #000000\">La mutation ATTR Val30Met est fr\u00e9quente chez les patients d\u2019origine portugaise par une neuropathie \u00e0 l\u2019\u00e2ge de 25 \u00e0 30 ans. Certaines mutations (Val122Ile, Ser77Tyr\u2026) touchent principalement ou exclusivement le c\u0153ur. Ces cas d\u2019amylose sont sous-estim\u00e9s dans la population des patients cardiologiques.<\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-78db4f6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"78db4f6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-043fdc5\" data-id=\"043fdc5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-296968a elementor-align-center elementor-widget elementor-widget-button\" data-id=\"296968a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-md\" href=\"https:\/\/www.reseau-amylose.org\/jesuissoignant\/documentation\/triptyques-du-centre-de-reference-des-amyloses-cardiaques-chu-henri-mondor\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">T\u00e9l\u00e9chargez le Triptyque Amyloses h\u00e9r\u00e9ditaires cardiologiques ATTR Val30Met<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6eff423 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6eff423\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-986a009\" data-id=\"986a009\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-52d0714 elementor-widget elementor-widget-text-editor\" data-id=\"52d0714\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h6><span style=\"color: #000000\">Le diagnostic se fait sur l\u2019analyse anatomopathologique qui retrouve des d\u00e9p\u00f4ts d\u2019amylose avec un immunomarquage positif pour transthyr\u00e9tine. Le test g\u00e9n\u00e9tique r\u00e9alis\u00e9 par s\u00e9quen\u00e7age qui identifie la mutation du g\u00e8ne de la transthyr\u00e9tine.<\/span><\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-73c53be4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"73c53be4\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-51a0fd6c\" data-id=\"51a0fd6c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-12efae84 elementor-widget elementor-widget-text-editor\" data-id=\"12efae84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4 style=\"text-align: left\"><span style=\"color: #4db8f0\"><strong>Orientation diagnostic<\/strong><\/span><\/h4><h6>La figure ci-dessous d\u00e9crit l\u2019orientation diagnostic devant une hypertrophie ventriculaire. La recherche des signes cliniques, \u00e9lectrocardiographiques et des anomalies \u00e9chocardiographiques syst\u00e9matique dans le cadre d\u2019une CMH devrait permettre un diagnostic et une prise en charge plus rapide.<\/h6>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-192f7bec elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"192f7bec\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-15c4f4c9\" data-id=\"15c4f4c9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a7f582e elementor-widget elementor-widget-image\" data-id=\"6a7f582e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/www.reseau-amylose.org\/soignant\/wp-content\/uploads\/2019\/01\/Strate\u0301gie_diagnostique_devant_une_suspicion_d_amylose_cardiaque.jpg\" data-elementor-open-lightbox=\"no\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"http:\/\/www.reseau-amylose.org\/soignant\/wp-content\/uploads\/2019\/01\/Strate\u0301gie_diagnostique_devant_une_suspicion_d_amylose_cardiaque.jpg\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f1f0dfd elementor-widget elementor-widget-spacer\" data-id=\"f1f0dfd\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Les amyloses cardiaques Les amyloses cardiaques L\u2019amylose est la manifestation de plusieurs maladies syst\u00e9miques (article Mohty D et al ACVD). La caract\u00e9ristique commune de ces maladies est une accumulation extracellulaire de prot\u00e9ines fibrillaires insolubles qui se d\u00e9posent et envahissent progressivement les tissus emp\u00eachant leur bon fonctionnement. L\u2019infiltration amylo\u00efde cardiaque est responsable d\u2019un \u00e9paississement du myocarde [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":115,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[],"tags":[],"class_list":["post-50","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Le point sur les amyloses - R\u00e9seau Amylose<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le point sur les amyloses - R\u00e9seau Amylose\" \/>\n<meta property=\"og:description\" content=\"Les amyloses cardiaques Les amyloses cardiaques L\u2019amylose est la manifestation de plusieurs maladies syst\u00e9miques (article Mohty D et al ACVD). La caract\u00e9ristique commune de ces maladies est une accumulation extracellulaire de prot\u00e9ines fibrillaires insolubles qui se d\u00e9posent et envahissent progressivement les tissus emp\u00eachant leur bon fonctionnement. L\u2019infiltration amylo\u00efde cardiaque est responsable d\u2019un \u00e9paississement du myocarde [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/\" \/>\n<meta property=\"og:site_name\" content=\"R\u00e9seau Amylose\" \/>\n<meta property=\"article:modified_time\" content=\"2023-12-19T11:26:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-721x1024.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/\",\"url\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/\",\"name\":\"Le point sur les amyloses - R\u00e9seau Amylose\",\"isPartOf\":{\"@id\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/#website\"},\"primaryImageOfPage\":{\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/#primaryimage\"},\"image\":{\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1-721x1024.png\",\"datePublished\":\"2018-12-04T23:31:46+00:00\",\"dateModified\":\"2023-12-19T11:26:38+00:00\",\"breadcrumb\":{\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/#primaryimage\",\"url\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1.png\",\"contentUrl\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/wp-content\/uploads\/sites\/5\/2023\/12\/QUAND-PENSER-A-AMYLOSE-1.png\",\"width\":1074,\"height\":1526},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pour le cardiologue\",\"item\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Le point sur les amyloses\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/#website\",\"url\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/\",\"name\":\"R\u00e9seau Amylose\",\"description\":\"Centre de r\u00e9f\u00e9rence des amyloses cardiaques espace soignant\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/reseau-amylose.org\/jesuissoignant\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Le point sur les amyloses - R\u00e9seau Amylose","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/reseau-amylose.org\/jesuissoignant\/pour-le-cardiologue\/le-point-sur-les-amyloses\/","og_locale":"fr_FR","og_type":"article","og_title":"Le point sur les amyloses - R\u00e9seau Amylose","og_description":"Les amyloses cardiaques Les amyloses cardiaques L\u2019amylose est la manifestation de plusieurs maladies syst\u00e9miques (article Mohty D et al ACVD). 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