{"id":65801,"date":"2025-02-27T00:00:00","date_gmt":"2025-02-27T00:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/proprete-excessive-dans-liss-nuit-a-la-sante"},"modified":"2025-02-27T00:00:00","modified_gmt":"2025-02-27T00:00:00","slug":"proprete-excessive-dans-liss-nuit-a-la-sante","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/proprete-excessive-dans-liss-nuit-a-la-sante","title":{"rendered":"Propret\u00e9 Excessive dans L\u2019Iss Nuit \u00e0 la Sant\u00e9"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Salir la station spatiale internationale (ISS) pour y vivre en meilleure sante\u0301 ? Une dro\u0302le d\u2019ide\u0301e propose\u0301e par une e\u0301quipe de chercheurs ame\u0301ricains. Leur e\u0301tude, publie\u0301e dans Cell Press, montre que l\u2019ISS pre\u0301sente une diversite\u0301 microbienne nettement infe\u0301rieure a\u0300 celle des environnements terrestres. Selon eux, le milieu clo\u0302t et aseptise\u0301 pourrait e\u0302tre a\u0300 l\u2019origine d\u2019un bon nombre de proble\u0300mes de sante\u0301 rencontre\u0301s par les astronautes durant leurs voyages dans l\u2019espace, que ce soient des dysfonctionnements immunitaires, des e\u0301ruptions cutane\u0301es ou d\u2019autres proble\u0300mes inflammatoires.<\/p>\n<p><b>Une re\u0301partition spatiale des microbes<\/b><\/p>\n<p>Pour e\u0301tudier l\u2019environnement microbien de l\u2019ISS, les chercheurs ont collabore\u0301 avec les astronautes, qui ont pre\u0301leve\u0301 803 e\u0301chantillons de surfaces diffe\u0301rentes, soit environ 100 fois plus d\u2019e\u0301chantillons que lors des e\u0301tudes pre\u0301ce\u0301dentes. Une fois les e\u0301chantillons revenus sur Terre, les espe\u0300ces bacte\u0301riennes et les substances chimiques pre\u0301sentes dans l\u2019ISS ont pu e\u0302tre analyse\u0301es.<\/p>\n<p>Les chercheurs ont cre\u0301e\u0301 des cartes tridimensionnelles illustrant l\u2019emplacement de chaque e\u0301chantillon sur l\u2019ISS. Ils constatent que leur re\u0301partition suit la disposition des diffe\u0301rents modules (pie\u0300ces) de la station. Par exemple, les zones de restauration et de pre\u0301paration des aliments contiennent plus de microbes associe\u0301s a\u0300 la nourriture, tandis que les toilettes spatiales comportent plus de microbes et me\u0301tabolites associe\u0301s a\u0300 l\u2019urine et aux matie\u0300res fe\u0301cales.<\/p>\n<p>Cela semble logique. La re\u0301partition des microbes lie\u0301s aux actions humaines n\u2019est pas si diffe\u0301rente sur Terre, mais ces derniers sont plus nombreux et surtout, plus diversifie\u0301s !<\/p>\n<p>La peau humaine est la principale source de microbes dans les e\u0301chantillons provenant de l\u2019ISS, suivie de la bouche et du nez. Or sur Terre, l\u2019environnement comporte une multitude de micro-organismes en liberte\u0301 dans le sol, dans l\u2019eau ou dans l\u2019air. Dans l\u2019espace, les astronautes ont tendance a\u0300 baigner dans leurs propres microbes, et de\u0301veloppent des maladies.<\/p>\n<p><b>Salir pour mieux gue\u0301rir<\/b><\/p>\n<p>Pour venir a\u0300 bout de ces microbes, les astronautes utilisent des produits de nettoyage en grande quantite\u0301. Les traces de ces produits chimiques e\u0301taient d\u2019ailleurs omnipre\u0301sentes dans les e\u0301chantillons ramene\u0301s de l\u2019ISS. Selon les chercheurs, ces e\u0301chantillons sont comparables a\u0300 ceux des ho\u0302pitaux. Dans ces milieux ste\u0301riles, les microbes humains pourraient de\u0301velopper plus facilement une re\u0301sistance aux produits.<\/p>\n<p>\u00ab Il y a une grande diffe\u0301rence entre l\u2019exposition a\u0300 un sol sain en jardinant et le fait de croupir dans sa propre crasse, ce qui est un peu ce qui se passe si nous sommes dans un environnement strictement clos sans apport continu de ces sources saines de microbes provenant de l\u2019exte\u0301rieur \u00bb, de\u0301clare Rob Knight, chercheur a\u0300 l\u2019Universite\u0301 de San Diego et co-auteur de l\u2019e\u0301tude, dans un communique\u0301.<\/p>\n<p>Selon les chercheurs, l\u2019inte\u0301gration intentionnelle de ces microbes et des substrats dans lesquels ils vivent dans l\u2019ISS pourrait ame\u0301liorer la sante\u0301 des astronautes sans sacrifier l\u2019hygie\u0300ne. Les be\u0301ne\u0301fices pourraient e\u0302tre les me\u0302me que ceux apporte\u0301s par une bonne se\u0301ance de jardinage sur le syste\u0300me immunitaire ! \u00ab Si nous voulons vraiment que la vie se de\u0301veloppe en dehors de la Terre, nous devons commencer a\u0300 re\u0301fle\u0301chir aux autres compagnons be\u0301ne\u0301fiques que nous devrions envoyer avec ces astronautes pour les aider a\u0300 de\u0301velopper des e\u0301cosyste\u0300mes durables \u00bb, explique Rodolfo Salido, co-auteur de l\u2019e\u0301tude.<\/p>\n<p>En affinant leurs analyses, les chercheurs espe\u0300rent trouver les microbes potentiellement pathoge\u0300nes dans l\u2019ISS, et ainsi contribuer a\u0300 ame\u0301liorer la sante\u0301 des personnes qui vivent et travaillent dans des environnements ste\u0301riles similaires sur Terre.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<span style=\"color: #ff6600\"><\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Salir la station spatiale internationale (ISS) pour y vivre en meilleure sante\u0301 ? Une dro\u0302le d\u2019ide\u0301e propose\u0301e par une e\u0301quipe de chercheurs ame\u0301ricains. Leur e\u0301tude, publie\u0301e dans Cell Press, montre que l\u2019ISS pre\u0301sente une diversite\u0301 microbienne nettement infe\u0301rieure a\u0300 celle des environnements terrestres. Selon eux, le milieu clo\u0302t et aseptise\u0301 pourrait e\u0302tre [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":65800,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-65801","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"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>Propret\u00e9 Excessive dans L\u2019Iss Nuit \u00e0 la Sant\u00e9 - Senegal<\/title>\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\/senegal\/politique\/proprete-excessive-dans-liss-nuit-a-la-sante\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Propret\u00e9 Excessive dans L\u2019Iss Nuit \u00e0 la Sant\u00e9\" \/>\n<meta property=\"og:description\" content=\"Africa-Press &#8211; Senegal. Salir la station spatiale internationale (ISS) pour y vivre en meilleure sante\u0301 ? Une dro\u0302le d\u2019ide\u0301e propose\u0301e par une e\u0301quipe de chercheurs ame\u0301ricains. Leur e\u0301tude, publie\u0301e dans Cell Press, montre que l\u2019ISS pre\u0301sente une diversite\u0301 microbienne nettement infe\u0301rieure a\u0300 celle des environnements terrestres. 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