{"id":1577,"date":"2025-10-30T11:38:19","date_gmt":"2025-10-30T08:38:19","guid":{"rendered":"https:\/\/wiki.voka.io\/glossary\/immunotherapie-specifique-aux-allergeniques\/"},"modified":"2025-10-30T11:38:15","modified_gmt":"2025-10-30T08:38:15","slug":"immunotherapie-specifique-aux-allergeniques","status":"publish","type":"glossary_item","link":"https:\/\/wiki.voka.io\/fr\/glossaire\/immunotherapie-specifique-aux-allergeniques\/","title":{"rendered":"ASIT (immunoth\u00e9rapie sp\u00e9cifique aux allerg\u00e8nes)"},"content":{"rendered":"\n<p>L&rsquo;immunoth\u00e9rapie sp\u00e9cifique \u00e0 l&rsquo;allerg\u00e8ne (ASIT) est la seule m\u00e9thode de traitement des maladies allergiques qui affecte toutes les parties du processus allergique, en modifiant la nature de la r\u00e9ponse du syst\u00e8me immunitaire \u00e0 l&rsquo;allerg\u00e8ne. Le traitement consiste \u00e0 introduire des doses croissantes de l&rsquo;allerg\u00e8ne responsable dans l&rsquo;organisme du patient.<\/p>\n\n<p>L&rsquo;objectif principal de l&rsquo;ASIT est d&rsquo;induire une tol\u00e9rance immunologique, c&rsquo;est-\u00e0-dire d'\u00a0\u00bbhabituer\u00a0\u00bb l&rsquo;organisme \u00e0 l&rsquo;allerg\u00e8ne, ce qui permet de r\u00e9duire consid\u00e9rablement les sympt\u00f4mes de la maladie ou de les faire dispara\u00eetre pendant une longue p\u00e9riode apr\u00e8s la fin du cours. Le traitement peut \u00e9galement emp\u00eacher l&rsquo;\u00e9largissement du spectre des allerg\u00e8nes et le passage de la rhinite allergique \u00e0 l&rsquo;asthme bronchique.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43C;&#x435;&#x445;&#x430;&#x43D;&#x438;&#x437;&#x43C;-&#x434;&#x435;&#x439;&#x441;&#x442;&#x432;&#x438;&#x44F;\"><strong>M\u00e9canisme d&rsquo;action<\/strong><\/h2>\n\n<p>Le m\u00e9canisme d&rsquo;action de l&rsquo;ASIT consiste \u00e0 faire passer la r\u00e9ponse immunitaire d&rsquo;allergique (de type Th2) \u00e0 tol\u00e9rante (de type Th1\/Treg). Cela entra\u00eene une diminution de la production d&rsquo;anticorps IgE sp\u00e9cifiques et une augmentation de la synth\u00e8se d&rsquo;anticorps IgG4 bloquants. Les anticorps bloquants lient l&rsquo;allerg\u00e8ne avant qu&rsquo;il n&rsquo;atteigne les IgE sur les mastocytes, emp\u00eachant ainsi le d\u00e9clenchement de la r\u00e9action allergique.<\/p>\n\n<h2 class=\"wp-block-heading\" id=\"h-&#x43A;&#x43B;&#x438;&#x43D;&#x438;&#x447;&#x435;&#x441;&#x43A;&#x43E;&#x435;-&#x437;&#x43D;&#x430;&#x447;&#x435;&#x43D;&#x438;&#x435;\"><strong>Signification clinique<\/strong><\/h2>\n\n<p>L&rsquo;ASIT est indiqu\u00e9e chez les patients souffrant d&rsquo;une allergie IgE-d\u00e9pendante av\u00e9r\u00e9e lorsqu&rsquo;il n&rsquo;est pas possible d&rsquo;arr\u00eater compl\u00e8tement le contact avec l&rsquo;allerg\u00e8ne. Les principales indications sont la rhinoconjonctivite allergique, l&rsquo;asthme bronchique allergique d&rsquo;intensit\u00e9 l\u00e9g\u00e8re \u00e0 mod\u00e9r\u00e9e, ainsi que l&rsquo;allergie aux insectes (au venin de pyrale).<\/p>\n\n<p>Il existe deux formes principales d&rsquo;application de la th\u00e9rapie :<\/p>\n\n<ul class=\"wp-block-list\">\n<li><strong>Immunoth\u00e9rapie sous-cutan\u00e9e (SCIT).<\/strong>  La m\u00e9thode classique est celle des injections.<\/li>\n\n\n\n<li><strong>Immunoth\u00e9rapie sublinguale (SLIT).<\/strong>  Prise de l&rsquo;allerg\u00e8ne sous forme de gouttes ou de comprim\u00e9s sous la langue.<\/li>\n<\/ul>\n\n<p>Le traitement s&rsquo;effectue par cures de plusieurs mois, d&rsquo;une dur\u00e9e totale de 3 \u00e0 5 ans en moyenne. Toujours sous la supervision d&rsquo;un allergologue-immunologue en raison du risque de r\u00e9actions allergiques.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;immunoth\u00e9rapie sp\u00e9cifique \u00e0 l&rsquo;allerg\u00e8ne (ASIT) est le seul traitement des maladies allergiques qui affecte toutes les parties du processus allergique en modifiant la fa\u00e7on dont le syst\u00e8me immunitaire r\u00e9agit \u00e0 l&rsquo;allerg\u00e8ne. Le traitement consiste \u00e0 introduire des doses croissantes de l&rsquo;allerg\u00e8ne responsable dans l&rsquo;organisme du patient.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-1577","glossary_item","type-glossary_item","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ASIT (immunoth\u00e9rapie sp\u00e9cifique aux allerg\u00e8nes) : d\u00e9finition m\u00e9dicale et description | Voka Wiki<\/title>\n<meta name=\"description\" content=\"L&#039;immunoth\u00e9rapie sp\u00e9cifique \u00e0 l&#039;allerg\u00e8ne (ASIT) est le seul traitement des maladies allergiques qui affecte toutes les parties du processus allergique en modifiant la fa\u00e7on dont le syst\u00e8me immunitaire r\u00e9agit \u00e0 l&#039;allerg\u00e8ne. 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