{"id":18866,"date":"2022-01-13T17:01:38","date_gmt":"2022-01-13T17:01:38","guid":{"rendered":"https:\/\/www.africa-press.net\/niger\/politique\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron"},"modified":"2022-01-13T17:27:41","modified_gmt":"2022-01-13T17:27:41","slug":"ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","title":{"rendered":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron"},"content":{"rendered":"

Africa-Press – Niger. <\/strong><\/span>Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid et aident \u00e0 mieux lui r\u00e9sister, indique le scientifique irlandais Luke O\u2019Neill dans son article sur The Conversation.<\/p>\n

Malgr\u00e9 la propagation rapide de l\u2019Omicron, des scientifiques de diff\u00e9rents pays ont point\u00e9 le fait que ce nouveau variant semble moins agressif. Le professeur de biochimie \u00e0 l’\u00c9cole de biochimie et d’immunologie du Trinity College de Dublin Luke O\u2019Neill a expliqu\u00e9 les raisons pour lesquelles l\u2019Omicron causerait plus rarement une forme grave, en donnant des d\u00e9tails dans un article publi\u00e9 sur le site du m\u00e9dia en ligne The Conversation.<\/p>\n

L\u2019une des raisons se situe dans les cellules T qui sont capables de faire face \u00e0 ce nouveau variant. Quand le SARS-CoV-2 infecte les poumons, la forme grave survient, ce qui implique des sympt\u00f4mes tels que des difficult\u00e9s respiratoires, et l’Omicron semble moins capable de le faire, selon le scientifique.<\/p>\n

La prot\u00e9ine spike \u00e0 la surface du virus SRAS-CoV-2 est une cible clef pour les anticorps. Ceux-ci s’accrochent \u00e0 la prot\u00e9ine spike et la bloquent, l’emp\u00eachant ainsi d’interagir avec les cellules que le virus tente d’infecter, lui assurant une protection. De ce fait, les cellules T peuvent toujours reconna\u00eetre et \u00e9liminer l’Omicron.<\/p>\n

Les cellules T protectrices<\/b><\/p>\n

Le T du nom des cellules vient du thymus, un organe situ\u00e9 dans la poitrine o\u00f9 elles arrivent \u00e0 maturit\u00e9. Leur mode d’action est diff\u00e9rent de celui des anticorps. Lorsqu’une cellule est infect\u00e9e par un virus, elle prend un morceau de la prot\u00e9ine spike du virus et l’affiche \u00e0 sa surface. C’est un peu comme si la cellule infect\u00e9e agitait un drapeau rouge pour dire qu’elle est infect\u00e9e. Les cellules T ont des capteurs pour ce drapeau sur leur propre surface. Ils s’accrochent \u00e0 la cellule infect\u00e9e et la tuent.<\/p>\n

Une autre \u00e9tude portant sur les cellules T<\/b><\/p>\n

Auparavant, des chercheurs de l’Imperial College de Londres avaient d\u00e9j\u00e0 r\u00e9v\u00e9l\u00e9 que des niveaux \u00e9lev\u00e9s de cellules T g\u00e9n\u00e9r\u00e9es par le corps en cas d\u2019infection par des coronavirus humains sont capables de prot\u00e9ger contre le Covid, selon une \u00e9tude parue dans la revue Nature Communications.<\/p>\n

Toutes les personnes, m\u00eame en l’absence de vaccination, ne contractent pas le Covid apr\u00e8s avoir \u00e9t\u00e9 expos\u00e9es au SARS-CoV-2, loin de l\u00e0. Les scientifiques estiment qu\u2019elles ont une forte immunit\u00e9 de leurs cellules T, ph\u00e9nom\u00e8ne qui s\u2019est produit lors de la rencontre avec d’autres coronavirus humains existant depuis longtemps.<\/p>\n

La propagation de l\u2019Omicron<\/b><\/p>\n

Plus de la moiti\u00e9 de la population europ\u00e9enne devrait avoir \u00e9t\u00e9 contamin\u00e9e par le variant Omicron du coronavirus responsable du Covid-19 dans les six \u00e0 huit semaines \u00e0 venir, a pr\u00e9venu mardi 11 janvier Hans Kluge, le directeur r\u00e9gional de l’Organisation mondiale de la sant\u00e9 (OMS) pour l’Europe.<\/p>\n

L\u2019Omicron se r\u00e9pand rapidement dans le monde entier, les experts affirmant que 40% de la population mondiale sera infect\u00e9e dans les deux prochains mois, ajoute Luke O\u2019Neill dans son article.<\/p>\n

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

Africa-Press – Niger. Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid et aident \u00e0 mieux lui r\u00e9sister, indique le scientifique irlandais Luke O\u2019Neill dans son article sur The Conversation. Malgr\u00e9 la propagation rapide de l\u2019Omicron, des scientifiques de diff\u00e9rents pays ont point\u00e9 le […]<\/p>\n","protected":false},"author":82,"featured_media":18865,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[55,60,29],"class_list":["post-18866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-niger","tag-niger"],"yoast_head":"\nCes cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron - niger<\/title>\n<meta name=\"description\" content=\"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...\" \/>\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\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron\" \/>\n<meta property=\"og:description\" content=\"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\" \/>\n<meta property=\"og:site_name\" content=\"niger\" \/>\n<meta property=\"article:published_time\" content=\"2022-01-13T17:01:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-01-13T17:27:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\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=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron\",\"datePublished\":\"2022-01-13T17:01:38+00:00\",\"dateModified\":\"2022-01-13T17:27:41+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\"},\"wordCount\":570,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Niger\",\"Niger\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\",\"url\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\",\"name\":\"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron - niger\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg\",\"datePublished\":\"2022-01-13T17:01:38+00:00\",\"dateModified\":\"2022-01-13T17:27:41+00:00\",\"author\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"description\":\"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...\",\"breadcrumb\":{\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage\",\"url\":\"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg\",\"contentUrl\":\"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg\",\"width\":1920,\"height\":1080,\"caption\":\"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.africa-press.net\/niger\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/#website\",\"url\":\"https:\/\/www.africa-press.net\/niger\/\",\"name\":\"niger\",\"description\":\"Just another Africa News Agency Sites site\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.africa-press.net\/niger\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\",\"name\":\"cfeditorfr\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron - niger","description":"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...","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":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","og_locale":"fr_FR","og_type":"article","og_title":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron","og_description":"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...","og_url":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","og_site_name":"niger","article_published_time":"2022-01-13T17:01:38+00:00","article_modified_time":"2022-01-13T17:27:41+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg","type":"image\/jpeg"}],"author":"cfeditorfr","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"cfeditorfr","Dur\u00e9e de lecture estim\u00e9e":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#article","isPartOf":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron"},"author":{"name":"cfeditorfr","@id":"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"headline":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron","datePublished":"2022-01-13T17:01:38+00:00","dateModified":"2022-01-13T17:27:41+00:00","mainEntityOfPage":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron"},"wordCount":570,"commentCount":0,"image":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg","keywords":["Africa Press","Africa Press-Niger","Niger"],"articleSection":["Divers","homepage-french","Toutes les actualit\u00e9s"],"inLanguage":"fr-FR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","url":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron","name":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron - niger","isPartOf":{"@id":"https:\/\/www.africa-press.net\/niger\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage"},"image":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage"},"thumbnailUrl":"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg","datePublished":"2022-01-13T17:01:38+00:00","dateModified":"2022-01-13T17:27:41+00:00","author":{"@id":"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1"},"description":"Les cellules T pr\u00e9sentes dans le corps humain jouent un r\u00f4le protecteur lors d\u2019une infection au variant Omicron du Covid ...","breadcrumb":{"@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#primaryimage","url":"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg","contentUrl":"https:\/\/static.africa-press.net\/niger\/sites\/40\/2022\/01\/img-61e060e2485ef.jpg","width":1920,"height":1080,"caption":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron"},{"@type":"BreadcrumbList","@id":"https:\/\/www.africa-press.net\/niger\/toutes-les-actualites\/ces-cellules-du-corps-meconnues-qui-aident-a-faire-face-a-lomicron#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.africa-press.net\/niger\/"},{"@type":"ListItem","position":2,"name":"Ces cellules du corps m\u00e9connues qui aident \u00e0 faire face \u00e0 l\u2019Omicron"}]},{"@type":"WebSite","@id":"https:\/\/www.africa-press.net\/niger\/#website","url":"https:\/\/www.africa-press.net\/niger\/","name":"niger","description":"Just another Africa News Agency Sites site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.africa-press.net\/niger\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/www.africa-press.net\/niger\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1","name":"cfeditorfr"}]}},"_links":{"self":[{"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/posts\/18866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/comments?post=18866"}],"version-history":[{"count":0,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/posts\/18866\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/media\/18865"}],"wp:attachment":[{"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/media?parent=18866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/categories?post=18866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.africa-press.net\/niger\/wp-json\/wp\/v2\/tags?post=18866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}