{"id":1443,"date":"2014-05-10T13:23:35","date_gmt":"2014-05-10T18:23:35","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=1443"},"modified":"2014-05-10T13:23:35","modified_gmt":"2014-05-10T18:23:35","slug":"contrer-le-vieillissement-cellulaire-avec-des-radicaux-libres","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/contrer-le-vieillissement-cellulaire-avec-des-radicaux-libres\/","title":{"rendered":"Contrer le vieillissement cellulaire avec&#8230; des radicaux libres?<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_1428\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/C-elegans.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1428\" class=\"size-full wp-image-1428\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/C-elegans.png\" alt=\"Des chercheurs ont r\u00e9ussi \u00e0 prolonger la vie de vers transparents C. elegans en les exposant \u00e0 des radicaux libres, ce qui contredit la croyance populaire. (Cr\u00e9dit : Siegfried Hekimi)\" width=\"400\" height=\"268\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/C-elegans.png 400w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/C-elegans-300x201.png 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-1428\" class=\"wp-caption-text\">Des chercheurs ont r\u00e9ussi \u00e0 prolonger la vie de vers transparents C. elegans en les exposant \u00e0 des radicaux libres, ce qui contredit la croyance populaire. (Cr\u00e9dit : <a href=\"http:\/\/www.eurekalert.org\/multimedia\/pub\/72923.php?from=267112\">Siegfried Hekimi<\/a>)<\/p><\/div>\n<p><span style=\"color: #222222;\">Les radicaux libres sont des mol\u00e9cules r\u00e9actives capables d\u2019endommager l\u2019ADN et les antioxydants sont cens\u00e9s \u00eatre capables de les combattre. Toutefois, une nouvelle \u00e9tude montre que, parfois, les radicaux libres pourraient nous aider \u00e0 vivre plus longtemps. <\/span><\/p>\n<p><span style=\"color: #222222;\">Des chercheurs ont augment\u00e9 la concentration de radicaux libres \u00e0 l\u2019int\u00e9rieur de vers transparents <\/span><span style=\"font-style: italic; color: #222222;\">C. elegans<\/span><span style=\"color: #222222;\"> et ont constat\u00e9 que cela prolongeait leur vie.<\/span><\/p>\n<p><span style=\"color: #222222;\"> Ils expliquent cela par le fait que les radicaux libres peuvent d\u00e9clencher des m\u00e9canismes de protection cellulaire qui encouragent les cellules \u00e0 consacrer plus d\u2019\u00e9nergies \u00e0 la r\u00e9paration qu\u2019\u00e0 la croissance, ce qui a aid\u00e9 les vers \u00e0 vivre plus longtemps dans des conditions difficiles.<\/span><\/p>\n<p>Pour lire l\u2019article original publi\u00e9 dans<em>\u00a0Cell\u00a0<\/em>le\u00a0<strong>8 Mai<\/strong><strong>\u00a02014<\/strong>,\u00a0<span style=\"text-decoration: underline;\"><a href=\"http:\/\/www.cell.com\/cell\/abstract\/S0092-8674(14)00359-6\" target=\"_blank\">cliquez\u00a0ici<\/a><\/span>.<\/p>\n<p><span style=\"text-decoration: underline;\"><span><em><strong>Auteur \u00e0 contacter pour plus d\u2019informations<\/strong><\/em><\/span><\/span><\/p>\n<h4><a style=\"color: #1155cc;\" href=\"http:\/\/hekimilab.mcgill.ca\/\" target=\"_blank\"><span style=\"font-style: italic;\">Siegfried Hekimi<\/span><\/a><span style=\"font-style: italic; color: #222222;\">, Universit\u00e9 McGill, Qu<\/span>\u00e9bec<\/h4>\n<h4><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Les radicaux libres sont des mol\u00e9cules r\u00e9actives capables d\u2019endommager l\u2019ADN et les antioxydants sont cens\u00e9s \u00eatre capables de les combattre. Toutefois, une nouvelle \u00e9tude montre que, parfois, les radicaux libres pourraient nous aider \u00e0 vivre plus longtemps. Des chercheurs ont augment\u00e9 la concentration de radicaux libres \u00e0 l\u2019int\u00e9rieur de vers transparents C. elegans et ont [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1428,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[531],"tags":[66,694,842,695,55],"class_list":["post-1443","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest-fr","tag-biologie","tag-medecine","tag-quebec","tag-sante","tag-sante-publique"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/05\/C-elegans.png","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-nh","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=1443"}],"version-history":[{"count":1,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1443\/revisions"}],"predecessor-version":[{"id":1444,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1443\/revisions\/1444"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/1428"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=1443"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=1443"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=1443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}