{"id":82761,"date":"2019-01-29T12:43:34","date_gmt":"2019-01-29T12:43:34","guid":{"rendered":"http:\/\/humanitasnet-new.local\/enciclopedia\/vanadium-2\/"},"modified":"2019-01-29T12:43:34","modified_gmt":"2019-01-29T12:43:34","slug":"vanadium-2","status":"publish","type":"enciclopedia","link":"https:\/\/humanitas-net.humweb.webiz.team\/fr\/wiki\/vanadium-2\/","title":{"rendered":"Vanadium"},"content":{"rendered":"<h2 id=\"quest-ce-que-le-vanadium\">Qu&#8217;est-ce que le vanadium ?<\/h2>\n<p>Le vanadium est un oligo-\u00e9l\u00e9ment, c&#8217;est-\u00e0-dire qu&#8217;on le trouve dans l&#8217;organisme en petites quantit\u00e9s. Ce min\u00e9ral est essentiel \u00e0 la croissance osseuse normale, bien que les \u00e9tudes actuelles n&#8217;aient pas \u00e9t\u00e9 en mesure de d\u00e9terminer exactement quels effets le vanadium peut avoir ou quelle quantit\u00e9 d&#8217;apport est la plus appropri\u00e9e. Le vanadium n&#8217;est pas recommand\u00e9 pour les personnes atteintes de troubles m\u00e9dicaux ; toutefois, il peut avoir un effet sur la glyc\u00e9mie chez les personnes diab\u00e9tiques.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"quelle-est-la-fonction-du-vanadium\">Quelle est la fonction du vanadium ?<\/h2>\n<p>Le vanadium est important pour la croissance et le d\u00e9veloppement de l&#8217;organisme. Il joue un r\u00f4le important dans la pompe sodium-potassium, une pompe \u00e0 ions situ\u00e9e dans la membrane cellulaire et qui participe \u00e0 la production d&#8217;enzymes. La production enzymatique implique le m\u00e9tabolisme des nutriments, des hormones et des tissus osseux, et inhibe la synth\u00e8se du cholest\u00e9rol.\u00a0 Selon certaines \u00e9tudes, le vanadium pourrait \u00e9galement jouer un r\u00f4le similaire \u00e0 celui de l&#8217;insuline, en aidant \u00e0 augmenter les effets de cette hormone et \u00e0 faire baisser le taux de glyc\u00e9mie. Le vanadium est aussi parfois annonc\u00e9 comme suppl\u00e9ment sportif, bien qu&#8217;il n&#8217;y ait aucune preuve \u00e0 l&#8217;appui de l&#8217;am\u00e9lioration des performances.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"quels-sont-les-aliments-riches-en-vanadium\">Quels sont les aliments riches en vanadium ?<\/h2>\n<p>Les meilleures sources de vanadium sont les champignons, les crustac\u00e9s, le poivre noir, le persil, l&#8217;aneth, la bi\u00e8re, le vin, les c\u00e9r\u00e9ales et les produits c\u00e9r\u00e9aliers, et les boissons artificiellement sucr\u00e9es. Il existe sous plusieurs formes, dont le sulfate vandale (suppl\u00e9ments nutritionnels) et le vanadate.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"quel-est-le-besoin-quotidien-recommande-en-vanadium\">Quel est le besoin quotidien recommand\u00e9 en vanadium ?<\/h2>\n<p>L&#8217;apport quotidien recommand\u00e9 de vanadium est de 10 \u00e0 20 microgrammes. Des doses plus \u00e9lev\u00e9es peuvent \u00eatre toxiques. Les personnes qui ne devraient pas prendre de vanadium comprennent les femmes enceintes ou qui allaitent et les personnes atteintes d&#8217;une maladie r\u00e9nale. Certaines complications peuvent survenir, notamment des l\u00e9sions r\u00e9nales, des l\u00e9sions h\u00e9patiques, une baisse de fertilit\u00e9, des malformations cong\u00e9nitales et autres.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"quelles-sont-les-consequences-dune-carence-en-vanadium\">Quelles sont les cons\u00e9quences d&#8217;une carence en vanadium ?<\/h2>\n<p>Des \u00e9tudes animales indiquent que les carences en vanadium pourraient ralentir la croissance, cr\u00e9er des probl\u00e8mes li\u00e9s \u00e0 la reproduction (y compris l&#8217;infertilit\u00e9) et modifier les taux de cholest\u00e9rol, de triglyc\u00e9rides, de glucose et d&#8217;insuline dans le sang. De plus, des niveaux insuffisants de ce min\u00e9ral peuvent \u00eatre associ\u00e9s au diab\u00e8te, aux maladies cardiovasculaires et \u00e0 l&#8217;ob\u00e9sit\u00e9. \u00c9tant donn\u00e9 que le vanadium peut abaisser la glyc\u00e9mie, les personnes qui prennent \u00e9galement des m\u00e9dicaments pour abaisser leur glyc\u00e9mie peuvent \u00eatre \u00e0 risque de d\u00e9velopper une hypoglyc\u00e9mie ou un faible taux de glucose sanguin. Toutefois, aucun de ces effets n&#8217;est certain et il est n\u00e9cessaire de consulter un professionnel de la sant\u00e9 en raison des effets secondaires et des complications possibles.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"quelles-sont-les-consequences-dune-consommation-excessive-de-vanadium\">Quelles sont les cons\u00e9quences d&#8217;une consommation excessive de vanadium ?<\/h2>\n<p>Une consommation excessive de vanadium, sup\u00e9rieure \u00e0 10 mg par jour, semble toxique et peut entra\u00eener des complications telles que des l\u00e9sions h\u00e9patiques ou r\u00e9nales ainsi qu&#8217;un risque accru de cancer du sein. En g\u00e9n\u00e9ral, plus l&#8217;\u00e9tat d&#8217;oxydation du vanadium est \u00e9lev\u00e9, plus le compos\u00e9 est toxique.<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","Example":[1803],"class_list":["post-82761","enciclopedia","type-enciclopedia","status-publish","hentry","enciclopedia_category-mineraux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vanadium - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vanadium - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"Qu&#8217;est-ce que le vanadium ? 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