{"id":22937,"date":"2026-06-01T09:42:37","date_gmt":"2026-06-01T09:42:37","guid":{"rendered":"https:\/\/drpascalmensah.com\/trois-horloges-trois-questions-age-epigenetique-glycanage-et-iage-expliques\/"},"modified":"2026-06-01T13:31:58","modified_gmt":"2026-06-01T13:31:58","slug":"trois-horloges-trois-questions-age-epigenetique-glycanage-et-iage-expliques","status":"publish","type":"post","link":"https:\/\/drpascalmensah.com\/fr\/trois-horloges-trois-questions-age-epigenetique-glycanage-et-iage-expliques\/","title":{"rendered":"Trois horloges, trois questions : \u00e2ge \u00e9pig\u00e9n\u00e9tique, GlycanAge et iAge expliqu\u00e9s"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"22937\" class=\"elementor elementor-22937 elementor-22826\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66b5e7a e-flex e-con-boxed e-con e-parent\" data-id=\"66b5e7a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-97c33c4 elementor-widget elementor-widget-text-editor\" data-id=\"97c33c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>\u00ab Quel est mon \u00e2ge biologique ? \u00bb C\u2019est aujourd\u2019hui l\u2019une des questions les plus fr\u00e9quentes en m\u00e9decine de la long\u00e9vit\u00e9. La r\u00e9ponse honn\u00eate est qu\u2019il n\u2019existe pas un seul \u00e2ge biologique mais plusieurs, et chacun mesurant des dimensions diff\u00e9rentes. Trois tests dominent aujourd\u2019hui ce domaine : <strong>les horloges \u00e9pig\u00e9n\u00e9tiques (m\u00e9thylation de l\u2019ADN), le test d\u2019\u00e2ge immunitaire IgG-glycan (GlycanAge)<\/strong> et <strong>l\u2019horloge inflammatoire iAge<\/strong>. Ils sont souvent pr\u00e9sent\u00e9s comme interchangeables. Ils ne le sont pas. Chacun explore une couche diff\u00e9rente de votre biologie, sur une \u00e9chelle de temps diff\u00e9rente, et chacun est aveugle \u00e0 ce que les autres d\u00e9tectent clairement.     <\/p>\n<p>Cet article explique ce que chacun mesure r\u00e9ellement, sur le plan m\u00e9canistique, afin qu\u2019un r\u00e9sultat devienne un outil d\u2019action clinique plut\u00f4t qu\u2019un simple chiffre inqui\u00e9tant.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e4abf0b e-flex e-con-boxed e-con e-parent\" data-id=\"e4abf0b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a8d0e33 elementor-widget elementor-widget-heading\" data-id=\"a8d0e33\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">1. Principe fondamental : trois couches du m\u00eame organisme\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6f9e0a5 elementor-widget elementor-widget-text-editor\" data-id=\"6f9e0a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le vieillissement n\u2019est pas un processus unique, mais une perte progressive d\u2019ordre \u00e0 travers plusieurs niveaux de r\u00e9gulation. Une mani\u00e8re utile d\u2019interpr\u00e9ter ces trois tests est de comprendre quelle couche biologique ils analysent : <\/p><ul><li><strong>Horloges \u00e9pig\u00e9n\u00e9tiques<\/strong> : <strong>logiciel de r\u00e9gulation<\/strong> cellulaire (activation\/inactivation des g\u00e8nes)<\/li><li><strong>IgG-glycan (\u00e2ge immunitaire)<\/strong> : r\u00e9glage<strong> inflammatoire des anticorps<\/strong><\/li><li><strong>iAge<\/strong> : <strong>\u00e9tat inflammatoire<\/strong> global du syst\u00e8me immunitaire circulant<\/li><\/ul><p>Autrement dit : l\u2019un mesure la r\u00e9gulation des g\u00e8nes, l\u2019autre mesure l\u2019\u00e9quilibre immunitaire et le dernier mesure l\u2019inflammation syst\u00e9mique actuelle. Un individu peut \u00eatre \u00ab jeune \u00bb sur un test et \u00ab \u00e2g\u00e9 \u00bb sur un autre. Cette discordance n\u2019est pas une contradiction : c\u2019est une information clinique majeure. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-912607c e-flex e-con-boxed e-con e-parent\" data-id=\"912607c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38dc9fe elementor-widget elementor-widget-heading\" data-id=\"38dc9fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">2. M\u00e9canismes mol\u00e9culaires : ce qui est r\u00e9ellement mesur\u00e9\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-87cbe5a elementor-widget elementor-widget-heading\" data-id=\"87cbe5a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2.1 Horloges \u00e9pig\u00e9n\u00e9tiques : d\u00e9rive de la m\u00e9thylation de l\u2019ADN<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4573f44 elementor-widget elementor-widget-text-editor\" data-id=\"4573f44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La m\u00e9thylation de l\u2019ADN correspond \u00e0 l\u2019ajout covalent d\u2019un groupe m\u00e9thyle sur la cytosine (5-m\u00e9thylcytosine), principalement au niveau des <strong>dinucl\u00e9otides CpG<\/strong>. Ce marquage ne modifie pas la s\u00e9quence g\u00e9n\u00e9tique, mais la disponibilit\u00e9 des g\u00e8nes \u00e0 \u00eatre exprim\u00e9s. Avec l\u2019\u00e2ge, ces patterns changent de mani\u00e8re partiellement pr\u00e9visible : <em>hypom\u00e9thylation<\/em> globale du g\u00e9nome, <em>hyperm\u00e9thylation<\/em> localis\u00e9e sur certains g\u00e8nes de d\u00e9veloppement et cibles Polycomb.  <\/p><p>Une horloge \u00e9pig\u00e9n\u00e9tique est un mod\u00e8le statistique (souvent r\u00e9gression p\u00e9nalis\u00e9e type elastic-net) entra\u00een\u00e9 \u00e0 lire plusieurs centaines \u00e0 centaines de milliers de sites CpG et \u00e0 pr\u00e9dire un \u00e2ge biologique. Premi\u00e8res g\u00e9n\u00e9rations : Horvath, Hannum \u2192 \u00e2ge <em>chronologique<\/em>. Deuxi\u00e8me g\u00e9n\u00e9ration : PhenoAge, GrimAge \u2192 <em>risque<\/em> clinique et mortalit\u00e9. <strong>DunedinPACE<\/strong> \u2192<em> vitesse<\/em> du vieillissement (\u00e2ge biologique par an chronologique), avec une excellente reproductibilit\u00e9  <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b0bb81 elementor-widget elementor-widget-heading\" data-id=\"6b0bb81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2.3 iAge : lecture par apprentissage profond de l\u2019immunome circulant<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-470186b elementor-widget elementor-widget-text-editor\" data-id=\"470186b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>iAge provient du projet Stanford 1000 Immunomes. Furman, Sayed et coll\u00e8gues ont utilis\u00e9 le deep learning sur le profil immunitaire sanguin de 1001 individus (8 \u00e0 96 ans) pour construire une <strong>horloge inflammatoire<\/strong>.<br\/>Elle est associ\u00e9e \u00e0 : multimorbidit\u00e9, immunos\u00e9nescence, fragilit\u00e9, vieillissement cardiovasculaire. Le principal contributeur est <strong>CXCL9<\/strong>, une chimiokine induite par l\u2019interf\u00e9ron-\u03b3 qui recrute les lymphocytes T.<br\/>CXCL9 augmente avec l\u2019\u00e2ge, provoque une dysfonction endoth\u00e9liale, contribue au rigidissement art\u00e9riel et son inhibition peut inverser certains ph\u00e9notypes de vieillissement cellulaire. iAge mesure donc directement l\u2019\u00e9tat <em>inflammatoire syst\u00e9mique<\/em> du sang.    <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbb63b4 elementor-widget elementor-widget-heading\" data-id=\"bbb63b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">2.4 Comparaison des trois tests<\/h4>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-81b9ee6 e-con-full e-flex e-con e-child\" data-id=\"81b9ee6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f329400 e-grid e-con-full e-con e-child\" data-id=\"f329400\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-da22a16 e-con-full e-flex e-con e-child\" data-id=\"da22a16\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c9fb455 elementor-widget elementor-widget-heading\" data-id=\"c9fb455\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Dimension <\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d2c5b0f e-con-full e-flex e-con e-child\" data-id=\"d2c5b0f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39d2df9 elementor-widget elementor-widget-heading\" data-id=\"39d2df9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Horloge \u00e9pig\u00e9n\u00e9tique<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5529b8c e-con-full e-flex e-con e-child\" data-id=\"5529b8c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a6d4ab1 elementor-widget elementor-widget-heading\" data-id=\"a6d4ab1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">GlycanAge (IgG)<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ba80ef9 e-con-full e-flex e-con e-child\" data-id=\"ba80ef9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c5c968a elementor-widget elementor-widget-heading\" data-id=\"c5c968a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">iAge<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a26f875 e-grid e-con-full e-con e-child\" data-id=\"a26f875\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f792f79 e-con-full e-flex e-con e-child\" data-id=\"f792f79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a874e04 elementor-widget elementor-widget-heading\" data-id=\"a874e04\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Couche biologique<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d10baa3 e-con-full e-flex e-con e-child\" data-id=\"d10baa3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-60c379d elementor-widget elementor-widget-heading\" data-id=\"60c379d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">R\u00e9gulation g\u00e9n\u00e9tique<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-500a169 e-con-full e-flex e-con e-child\" data-id=\"500a169\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b1f5a7a elementor-widget elementor-widget-heading\" data-id=\"b1f5a7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Calibration immunitaire (anticorps)<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4d20dff e-con-full e-flex e-con e-child\" data-id=\"4d20dff\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-34f1f22 elementor-widget elementor-widget-heading\" data-id=\"34f1f22\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Inflammation syst\u00e9mique<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3367fd2 e-grid e-con-full e-con e-child\" data-id=\"3367fd2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-1a0b86c e-con-full e-flex e-con e-child\" data-id=\"1a0b86c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-587df1d elementor-widget elementor-widget-heading\" data-id=\"587df1d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Ce qui est mesur\u00e9<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9a0644d e-con-full e-flex e-con e-child\" data-id=\"9a0644d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-22a24ab elementor-widget elementor-widget-heading\" data-id=\"22a24ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">M\u00e9thylation CpG (5-mC)<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fecb71f e-con-full e-flex e-con e-child\" data-id=\"fecb71f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d1656f6 elementor-widget elementor-widget-heading\" data-id=\"d1656f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Glycosylation Fc des IgG<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d31c603 e-con-full e-flex e-con e-child\" data-id=\"d31c603\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d9331c1 elementor-widget elementor-widget-heading\" data-id=\"d9331c1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Cytokines \/ chimiokines circulantes<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4cfd923 e-grid e-con-full e-con e-child\" data-id=\"4cfd923\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a7f1544 e-con-full e-flex e-con e-child\" data-id=\"a7f1544\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f6ff9ca elementor-widget elementor-widget-heading\" data-id=\"f6ff9ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">\u00c9chantillon<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1a2a732 e-con-full e-flex e-con e-child\" data-id=\"1a2a732\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1e84534 elementor-widget elementor-widget-heading\" data-id=\"1e84534\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Sang ou salive<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-52c7bc1 e-con-full e-flex e-con e-child\" data-id=\"52c7bc1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-820373f elementor-widget elementor-widget-heading\" data-id=\"820373f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Sang s\u00e9ch\u00e9 \/ sang<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2aa8435 e-con-full e-flex e-con e-child\" data-id=\"2aa8435\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a299c56 elementor-widget elementor-widget-heading\" data-id=\"a299c56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Sang<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-18be47f e-grid e-con-full e-con e-child\" data-id=\"18be47f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-11c4d19 e-con-full e-flex e-con e-child\" data-id=\"11c4d19\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4040473 elementor-widget elementor-widget-heading\" data-id=\"4040473\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Ce que cela refl\u00e8te<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-83cc9b0 e-con-full e-flex e-con e-child\" data-id=\"83cc9b0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-de8d6d0 elementor-widget elementor-widget-heading\" data-id=\"de8d6d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">\u00c2ge biologique cumulatif<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dc1571e e-con-full e-flex e-con e-child\" data-id=\"dc1571e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-84b2dd4 elementor-widget elementor-widget-heading\" data-id=\"84b2dd4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Set-point inflammatoire immunitaire<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-907d8e7 e-con-full e-flex e-con e-child\" data-id=\"907d8e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5e24a10 elementor-widget elementor-widget-heading\" data-id=\"5e24a10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Charge inflammatoire actuelle<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fcf0cb4 e-grid e-con-full e-con e-child\" data-id=\"fcf0cb4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-93d7096 e-con-full e-flex e-con e-child\" data-id=\"93d7096\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-04e1720 elementor-widget elementor-widget-heading\" data-id=\"04e1720\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Ce que cela ne voit pas bien<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2f53068 e-con-full e-flex e-con e-child\" data-id=\"2f53068\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ed495b7 elementor-widget elementor-widget-heading\" data-id=\"ed495b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Inflammation aigu\u00eb<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-087e644 e-con-full e-flex e-con e-child\" data-id=\"087e644\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6671664 elementor-widget elementor-widget-heading\" data-id=\"6671664\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Vieillissement des organes non immunitaires<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ca3dfc2 e-con-full e-flex e-con e-child\" data-id=\"ca3dfc2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c92da11 elementor-widget elementor-widget-heading\" data-id=\"c92da11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Programmation \u00e9pig\u00e9n\u00e9tique stable<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-65ab9ad e-grid e-con-full e-con e-child\" data-id=\"65ab9ad\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-ff8955e e-con-full e-flex e-con e-child\" data-id=\"ff8955e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b0aad9f elementor-widget elementor-widget-heading\" data-id=\"b0aad9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Dynamique<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9d34574 e-con-full e-flex e-con e-child\" data-id=\"9d34574\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f227e3a elementor-widget elementor-widget-heading\" data-id=\"f227e3a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Lente (mois\u2013ann\u00e9es)<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b96e762 e-con-full e-flex e-con e-child\" data-id=\"b96e762\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5bd2191 elementor-widget elementor-widget-heading\" data-id=\"5bd2191\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Interm\u00e9diaire<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b502efd e-con-full e-flex e-con e-child\" data-id=\"b502efd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ec81cc7 elementor-widget elementor-widget-heading\" data-id=\"ec81cc7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Rapide (\u00e9tat actuel)<\/p>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b7aa735 e-flex e-con-boxed e-con e-parent\" data-id=\"b7aa735\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-acb3805 elementor-widget elementor-widget-heading\" data-id=\"acb3805\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">3. Interpr\u00e9tation syst\u00e8me : pourquoi les r\u00e9sultats diff\u00e8rent<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46aedb0 elementor-widget elementor-widget-text-editor\" data-id=\"46aedb0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Comme les trois tests explorent des couches biologiques diff\u00e9rentes, la <strong>discordance est la r\u00e8gle plut\u00f4t que l\u2019exception<\/strong> et c\u2019est pr\u00e9cis\u00e9ment l\u00e0 que se trouve le signal clinique le plus important.<\/p><ul><li><strong>Un \u00e2ge \u00e9pig\u00e9n\u00e9tique normal mais un iAge et un IgG-G0<\/strong> \u00e9lev\u00e9s sugg\u00e8rent un processus inflammatoire actif (infection occulte, auto-immunit\u00e9, adiposit\u00e9 visc\u00e9rale, mauvais sommeil) qui n\u2019a pas encore \u00e9t\u00e9 \u00ab inscrit \u00bb dans la couche \u00e9pig\u00e9n\u00e9tique lente. Il s\u2019agit d\u2019un signal pr\u00e9coce et r\u00e9versible. <\/li><li><strong>Un \u00e2ge \u00e9pig\u00e9n\u00e9tique acc\u00e9l\u00e9r\u00e9 avec une inflammation faible<\/strong> indique plut\u00f4t un dommage de programmation cumulatif (l\u2019empreinte des expositions pass\u00e9es) et oriente vers des interventions \u00e0 long terme.<\/li><li><strong>Une \u00e9l\u00e9vation concordante des trois marqueurs<\/strong> constitue le signal le plus fort d\u2019un vieillissement r\u00e9ellement acc\u00e9l\u00e9r\u00e9 et repr\u00e9sente l\u2019indication la plus solide d\u2019intervention.<\/li><\/ul><p>La couche immunitaire est centrale dans cette lecture, car l\u2019<strong>\u00ab inflammaging \u00bb agit comme un hub<\/strong> : l\u2019inflammation chronique de bas grade acc\u00e9l\u00e8re \u00e0 la fois le vieillissement \u00e9pig\u00e9n\u00e9tique, tout en \u00e9tant elle-m\u00eame modul\u00e9e par la calibration immunitaire (glycanes des IgG) et l\u2019activit\u00e9 immunitaire circulante (iAge). C\u2019est pr\u00e9cis\u00e9ment cette perspective centr\u00e9e sur l\u2019immunologie qui permet de lire ces tests de mani\u00e8re int\u00e9gr\u00e9e, plut\u00f4t que de fa\u00e7on isol\u00e9e. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e553acc e-flex e-con-boxed e-con e-parent\" data-id=\"e553acc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f757c7c elementor-widget elementor-widget-heading\" data-id=\"f757c7c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">4. Perspective quantitative et thermodynamique<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fce439 elementor-widget elementor-widget-text-editor\" data-id=\"4fce439\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Le vieillissement peut \u00eatre consid\u00e9r\u00e9 comme une accumulation d\u2019<strong>entropie dans l\u2019information r\u00e9gulatrice<\/strong>. L\u2019\u00e9pig\u00e9nome est, en termes de th\u00e9orie de l\u2019information, une couche d\u2019annotation \u00e0 haute densit\u00e9. La \u00ab d\u00e9rive \u00bb de m\u00e9thylation correspond \u00e0 une perte progressive de la fid\u00e9lit\u00e9 de cette annotation. Les horloges \u00e9pig\u00e9n\u00e9tiques mesurent donc essentiellement cette <em>perte d\u2019information<\/em>, ce qui explique pourquoi les mod\u00e8les les plus fiables (par exemple DunedinPACE, avec des valeurs de reproductibilit\u00e9 test\u2013retest autour de 0,96) se comportent davantage comme des indicateurs de vitesse que comme des instantan\u00e9s.  <\/p><p>Le ph\u00e9nom\u00e8ne d\u2019\u00ab inflammaging \u00bb ajoute un <strong>co\u00fbt thermodynamique<\/strong> suppl\u00e9mentaire. Un syst\u00e8me immunitaire chroniquement activ\u00e9 est m\u00e9taboliquement co\u00fbteux : il oriente les cellules immunitaires vers la glycolyse a\u00e9robie, augmente la production mitochondriale d\u2019esp\u00e8ces r\u00e9actives de l\u2019oxyg\u00e8ne (ROS), et consomme du NAD\u207a via l\u2019activit\u00e9 des PARP et des sirtuines dans le cadre de la signalisation continue des dommages. Dans ce cadre, iAge et IgG-G0 refl\u00e8tent la part du budget m\u00e9tabolique qui est d\u00e9tourn\u00e9e vers un \u00e9tat inflammatoire chronique de bas grade et auto-entretenu, une \u00e9nergie qui n\u2019est alors plus disponible pour les processus de r\u00e9paration. L\u2019implication pratique est quantitative : un r\u00e9sultat est surtout pertinent lorsqu\u2019il est interpr\u00e9t\u00e9 comme une <strong>tendance<\/strong> dans le temps, compar\u00e9e \u00e0 une ligne de base individuelle, plut\u00f4t que comme une valeur isol\u00e9e compar\u00e9e \u00e0 une population.   <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5fd37e4 e-flex e-con-boxed e-con e-parent\" data-id=\"5fd37e4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8002aec elementor-widget elementor-widget-heading\" data-id=\"8002aec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">5. Implications cliniques et translationnelles<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-477ae10 elementor-widget elementor-widget-text-editor\" data-id=\"477ae10\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Pour un clinicien, la valeur ne r\u00e9side pas dans un score isol\u00e9, mais dans la <strong>triangulation<\/strong> des donn\u00e9es. Un protocole d\u2019interpr\u00e9tation d\u00e9fendable comprend : <\/p><ol><li><strong>\u00c9tablir une ligne de base sur les diff\u00e9rentes couches biologiques<\/strong> : une horloge \u00e9pig\u00e9n\u00e9tique pour la vitesse cumul\u00e9e du vieillissement, un \u00e2ge immunitaire (IgG-glycanes) pour le point d\u2019\u00e9quilibre inflammatoire et une horloge inflammatoire (iAge) pour la charge inflammatoire actuelle lorsqu\u2019elle est disponible.<\/li><li><strong>Lire la discordance<\/strong>, et non seulement les moyennes : elle permet de distinguer un probl\u00e8me de programmation biologique d\u2019une inflammation active (voir section 3).<\/li><li><strong>Adapter le temps des interventions \u00e0 la couche concern\u00e9e<\/strong> : les interventions ciblant l\u2019inflammation et le m\u00e9tabolisme modifient iAge et les glycanes des IgG en quelques mois, tandis que la vitesse \u00e9pig\u00e9n\u00e9tique \u00e9volue sur des horizons plus longs.<\/li><li><strong>R\u00e9\u00e9valuer \u00e0 intervalles coh\u00e9rents<\/strong> : les couches rapides (inflammation) tous les 3 \u00e0 6 mois, la couche \u00e9pig\u00e9n\u00e9tique une fois par an et \u00e9valuer le succ\u00e8s en fonction de l\u2019\u00e9volution par rapport \u00e0 la ligne de base individuelle du patient.<\/li><\/ol><p>Ce point constitue une limite fr\u00e9quente des tests propos\u00e9s directement aux consommateurs : le test fournit un chiffre, mais ce chiffre n\u00e9cessite un clinicien ma\u00eetrisant l\u2019immunom\u00e9tabolisme pour \u00eatre transform\u00e9 en strat\u00e9gie d\u2019action. C\u2019est cette couche d\u2019interpr\u00e9tation, et non le test lui-m\u00eame, qui transforme une mesure biologique en v\u00e9ritable outil m\u00e9dical. <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6499edc e-flex e-con-boxed e-con e-parent\" data-id=\"6499edc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-04b7f70 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"04b7f70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\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 class=\"elementor-element elementor-element-20782ff elementor-widget elementor-widget-text-editor\" data-id=\"20782ff\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Note concernant la certitude<\/strong> : <em>Les m\u00e9canismes et les chiffres pr\u00e9sent\u00e9s ci-dessus proviennent de sources \u00e9valu\u00e9es par des pairs et cit\u00e9es ci-dessous. La trajectoire de l\u2019\u00e2ge de l\u2019IgG-G0 (environ 20 % \u00e0 25 ans \u2192 environ 40 % \u00e0 70 ans) et le r\u00f4le pr\u00e9pond\u00e9rant de CXCL9 dans l\u2019iAge sont directement rapport\u00e9s dans la litt\u00e9rature. La fiabilit\u00e9 de l\u2019horloge biologique varie selon l\u2019\u00e9tude et la plateforme ; le coefficient de corr\u00e9lation intraclasse (ICC) d\u2019environ 0,96 est rapport\u00e9 pour DunedinPACE et doit \u00eatre interpr\u00e9t\u00e9 comme sp\u00e9cifique \u00e0 cette plateforme, et non comme une valeur universelle.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-249379c elementor-widget elementor-widget-heading\" data-id=\"249379c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">R\u00e9f\u00e9rences<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-998649a elementor-widget elementor-widget-text-editor\" data-id=\"998649a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.nature.com\/articles\/s43587-021-00082-y\" target=\"_blank\" rel=\"noopener\">Sayed, N., Furman, D., et al. (2021). An inflammatory aging clock (iAge) based on deep learning tracks multimorbidity, immunosenescence, frailty and cardiovascular aging. Nature Aging.  <\/a><\/span><\/p><p><span style=\"text-decoration: underline;\"><a href=\"https:\/\/www.sciencedaily.com\/releases\/2021\/07\/210712122159.htm\" target=\"_blank\" rel=\"noopener\">Stanford\/Buck 1000 Immunomes Project: study summary.<\/a><\/span><\/p><p><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11399422\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Immunoglobulin G glycosylation and its alterations in aging-related diseases (2024). PMC. <\/span><\/a><\/p><p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0009898122012578\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Immunoglobulin G glycans: biomarkers and molecular effectors of aging. Clinica Chimica Acta \/ ScienceDirect. <\/span><\/a><\/p><p><a href=\"https:\/\/www.nature.com\/articles\/s41366-021-00816-3\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Extensive weight loss reduces glycan age by altering IgG N-glycosylation (2021). International Journal of Obesity. <\/span><\/a><\/p><p><a href=\"https:\/\/www.frontiersin.org\/journals\/immunology\/articles\/10.3389\/fimmu.2023.1188838\/full\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">The role of N-glycosylation in B-cell biology and IgG activity (2023). Frontiers in Immunology. <\/span><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Que mesurent r\u00e9ellement l\u2019\u00e2ge \u00e9pig\u00e9n\u00e9tique, GlycanAge et iAge ? Cet article explique les m\u00e9canismes biologiques derri\u00e8re chacun de ces tests, ce qu\u2019ils capturent du vieillissement, et comment interpr\u00e9ter leurs r\u00e9sultats dans un contexte clinique pertinent. <\/p>\n","protected":false},"author":1,"featured_media":22936,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[247],"tags":[254,223,224],"class_list":["post-22937","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-genetique","tag-epigenetique","tag-genetique","tag-vieillissement"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/posts\/22937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/comments?post=22937"}],"version-history":[{"count":2,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/posts\/22937\/revisions"}],"predecessor-version":[{"id":22946,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/posts\/22937\/revisions\/22946"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/media\/22936"}],"wp:attachment":[{"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/media?parent=22937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/categories?post=22937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/drpascalmensah.com\/fr\/wp-json\/wp\/v2\/tags?post=22937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}