{"id":25288,"date":"2023-09-20T19:00:00","date_gmt":"2023-09-20T19:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/togo\/politique\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque"},"modified":"2023-09-24T19:40:51","modified_gmt":"2023-09-24T19:40:51","slug":"maladie-dalzheimer-les-vaccinations-reduisent-le-risque","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque","title":{"rendered":"Maladie d’Alzheimer\u00a0: les vaccinations r\u00e9duisent le risque"},"content":{"rendered":"

Africa-Press – Togo. <\/strong><\/span>Plusieurs e\u0301tudes e\u0301pide\u0301miologiques d\u2019envergure montrent que les personnes a\u0302ge\u0301es vaccine\u0301es contre diffe\u0301rents pathoge\u0300nes ont un risque nettement plus faible de contracter la maladie d\u2019Alzheimer par la suite.<\/p>\n

Huit ans apre\u0300s la premie\u0300re vaccination, les cas de maladie d\u2019Alzheimer e\u0301taient re\u0301duits de 30%<\/b><\/p>\n

La dernie\u0300re e\u0301tude en date effectue\u0301e par des e\u0301pide\u0301miologistes de l\u2019universite\u0301 du Texas a porte\u0301 sur 1,5 million d\u2019Ame\u0301ricains de 65 ans et plus qui avaient e\u0301te\u0301 vaccine\u0301s conforme\u0301ment au calendrier vaccinal contre la pneumonie, le te\u0301tanos, la diphte\u0301rie, la coqueluche et le zona. Huit ans apre\u0300s la premie\u0300re vaccination, les cas de maladie d\u2019Alzheimer e\u0301taient re\u0301duits de 30% en moyenne par rapport a\u0300 une population non vaccine\u0301e.<\/p>\n

Ces re\u0301sultats e\u0301taient inde\u0301pendants de la nature du vaccin, de l\u2019a\u0302ge et du sexe de la personne, de son e\u0301tat de sante\u0301, du tabagisme, de ses traitements me\u0301dicamenteux, de son origine ge\u0301ographique ou ethnique. Le vaccin peut aussi e\u0302tre dirige\u0301 contre un virus, le zona e\u0301tant une re\u0301activation d\u2019une infection par le virus de la varicelle contracte\u0301e pendant l\u2019enfance.<\/p>\n

Comment expliquer cet effet apparemment protecteur des vaccinations ?<\/b><\/p>\n

Une seule vaccination suffit pour e\u0302tre de\u0301ja\u0300 associe\u0301e a\u0300 cette re\u0301duction mais une autre e\u0301tude inde\u0301pendante a de\u0301ja\u0300 montre\u0301 un effet cumulatif de plusieurs vaccinations avec celle contre le zona. Une association comparable a e\u0301te\u0301 retrouve\u0301e par le passe\u0301 avec les vaccinations contre la rage, les he\u0301patites A et B, et contre la grippe. Par ailleurs, vacciner contre la tuberculose avec le BCG chez les plus de 70 ans, un traitement souvent utilise\u0301 contre le cancer de la vessie, est un autre moyen de re\u0301duire de 30% le risque de de\u0301clarer la maladie d\u2019Alzheimer, re\u0301ve\u0300le une e\u0301tude inde\u0301pendante mene\u0301e aux E\u0301tats-Unis et re\u0301cemment publie\u0301e dans la revue me\u0301dicale JAMA Open network.<\/p>\n

Comment expliquer cet effet apparemment protecteur des vaccinations, comparable aux derniers traitements pre\u0301ventifs a\u0300 base d\u2019anticorps de\u0301veloppe\u0301s contre la maladie et bien moins cou\u0302teux ? Le myste\u0300re reste entier pour les chercheurs, mais une forte stimulation du syste\u0300me immunitaire pourrait permettre d\u2019activer le nettoyage dans le cerveau des peptides be\u0302ta amyloi\u0308des en cause dans la maladie d\u2019Alzheimer. Une hypothe\u0300se qui devra cependant e\u0302tre teste\u0301e chez l\u2019animal.<\/p>\n

Pour plus d’informations et d’analyses sur la Togo<\/a>, suivez Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – Togo. Plusieurs e\u0301tudes e\u0301pide\u0301miologiques d\u2019envergure montrent que les personnes a\u0302ge\u0301es vaccine\u0301es contre diffe\u0301rents pathoge\u0300nes ont un risque nettement plus faible de contracter la maladie d\u2019Alzheimer par la suite. Huit ans apre\u0300s la premie\u0300re vaccination, les cas de maladie d\u2019Alzheimer e\u0301taient re\u0301duits de 30% La dernie\u0300re e\u0301tude en date effectue\u0301e par des e\u0301pide\u0301miologistes de […]<\/p>\n","protected":false},"author":82,"featured_media":25287,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,49,50],"class_list":["post-25288","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-togo","tag-togo"],"yoast_head":"\nMaladie d'Alzheimer\u00a0: les vaccinations r\u00e9duisent le risque - Togo<\/title>\n<meta name=\"description\" content=\"Plusieurs e\u0301tudes e\u0301pide\u0301miologiques d\u2019envergure montrent que les personnes a\u0302ge\u0301es vaccine\u0301es contre diffe\u0301rents pathog ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maladie d'Alzheimer\u00a0: les vaccinations r\u00e9duisent le risque\" \/>\n<meta property=\"og:description\" content=\"Plusieurs e\u0301tudes e\u0301pide\u0301miologiques d\u2019envergure montrent que les personnes a\u0302ge\u0301es vaccine\u0301es contre diffe\u0301rents pathog ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\" \/>\n<meta property=\"og:site_name\" content=\"Togo\" \/>\n<meta property=\"article:published_time\" content=\"2023-09-20T19:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-24T19:40:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/togo\/sites\/58\/2023\/09\/sm_1695571349.372105.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"899\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/togo\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Maladie d’Alzheimer\u00a0: les vaccinations r\u00e9duisent le risque\",\"datePublished\":\"2023-09-20T19:00:00+00:00\",\"dateModified\":\"2023-09-24T19:40:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\"},\"wordCount\":456,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/togo\/sites\/58\/2023\/09\/sm_1695571349.372105.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Togo\",\"Togo\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\",\"url\":\"https:\/\/www.africa-press.net\/togo\/toutes-les-actualites\/maladie-dalzheimer-les-vaccinations-reduisent-le-risque\",\"name\":\"Maladie d'Alzheimer\u00a0: les vaccinations r\u00e9duisent le risque - 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