{"id":4902,"date":"2022-11-27T19:43:09","date_gmt":"2022-11-27T19:43:09","guid":{"rendered":"https:\/\/www.africa-press.net\/guinee-equatoriale\/politique\/interview-le-systeme-immunitaire-est-plutot-du-matin"},"modified":"2022-11-27T20:39:01","modified_gmt":"2022-11-27T20:39:01","slug":"interview-le-systeme-immunitaire-est-plutot-du-matin","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/guinee-equatoriale\/toutes-les-actualites\/interview-le-systeme-immunitaire-est-plutot-du-matin","title":{"rendered":"INTERVIEW. \u201cLe syst\u00e8me immunitaire est plut\u00f4t du matin\u201d"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Guinee Equatoriale. <\/strong><\/span>Une e\u0301quipe de l\u2019Universite\u0301 de Gene\u0300ve (Suisse) a montre\u0301 que l\u2019activite\u0301 du syste\u0300me immunitaire oscille tout au long de la journe\u0301e avec un pic d\u2019activite\u0301 le matin, avant que notre organisme reprenne son activite\u0301. Sciences et Avenir a interroge\u0301 a\u0300 ce sujet Christoph Scheiermann, professeur associe\u0301 au de\u0301partement de pathologie et immunologie de l\u2019Universite\u0301 de Gene\u0300ve et co-auteur de l\u2019e\u0301tude en question publie\u0301e dans la revue Nature Immunology, le 18 octobre 2021.<\/p>\n<p>Sciences et Avenir : Comment avez-vous e\u0301tudie\u0301 les rythmes de l\u2019immunite\u0301 ?<\/p>\n<p>Christoph Scheiermann : Nous avons observe\u0301 un type particulier de cellules immunitaires, les cellules dendritiques (DCs), dont le ro\u0302le est de migrer au travers des vaisseaux lymphatiques vers les ganglions pour amorcer une re\u0301ponse immunitaire contre l\u2019arrive\u0301e d\u2019un pathoge\u0300ne. C\u2019est cette capacite\u0301 migratoire que nous avons e\u0301value\u0301e chez la souris en fonction des diffe\u0301rents moments de la journe\u0301e.<\/p>\n<p>Comment de\u0301cririez-vous ces variations ?<\/p>\n<p>Les DCs migrent de fac\u0327on rythme\u0301e vers les ganglions dans les vaisseaux lymphatiques affe\u0301rents. Or, cette \u201crythmicite\u0301\u201d de\u0301pend conjointement de l\u2019horloge circadienne (cycle jour\/nuit) des cellules elles-me\u0302mes et de l\u2019environnement dans lequel e\u0301volue l\u2019organisme. Si le cycle est rompu dans l\u2019environnement ou les cellules, le syste\u0300me immunitaire fonctionne au ralenti.<\/p>\n<p>Que cela signifie-t-il ?<\/p>\n<p>Ces oscillations indiquent que notre organisme a davantage besoin du syste\u0300me immunitaire a\u0300 certains moments de la journe\u0301e, avec un pic d\u2019activite\u0301 matinal. Probablement parce qu\u2019il doit se pre\u0301parer a\u0300 une potentielle attaque d\u2019agents pathoge\u0300nes juste avant le de\u0301but de sa phase active.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/guinee-equatoriale\">Guinee Equatoriale<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Guinee Equatoriale. Une e\u0301quipe de l\u2019Universite\u0301 de Gene\u0300ve (Suisse) a montre\u0301 que l\u2019activite\u0301 du syste\u0300me immunitaire oscille tout au long de la journe\u0301e avec un pic d\u2019activite\u0301 le matin, avant que notre organisme reprenne son activite\u0301. Sciences et Avenir a interroge\u0301 a\u0300 ce sujet Christoph Scheiermann, professeur associe\u0301 au de\u0301partement de pathologie et [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":4901,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,49,50],"class_list":["post-4902","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-guinee-equatoriale","tag-guinee-equatoriale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>INTERVIEW. \u201cLe syst\u00e8me immunitaire est plut\u00f4t du matin\u201d - Guin\u00e9e \u00e9quatoriale<\/title>\n<meta name=\"description\" content=\"Une e\u0301quipe de l\u2019Universite\u0301 de 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