{"id":32846,"date":"2022-10-18T12:56:09","date_gmt":"2022-10-18T10:56:09","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=32846"},"modified":"2022-10-18T12:56:17","modified_gmt":"2022-10-18T10:56:17","slug":"el-retorn-a-la-vida-de-les-espores","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/el-retorn-a-la-vida-de-les-espores\/","title":{"rendered":"El retorn a la vida de les espores"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">La falta de nutrients i l\u2019estr\u00e8s poden fer que algunes esp\u00e8cies de bacteris entrin en un estat de dormici\u00f3 que els fa bioqu\u00edmicament inactius. Fins ara, es desconeixia com les <strong>espores bacterianes<\/strong> podien integrar els senyals ambientals per a <strong>recuperar-se d&#8217;aquesta estat de letargia,<\/strong> que pot durar <strong>desenes de milers d\u2019anys <\/strong>o m\u00e9s. Per\u00f2 un <a rel=\"noreferrer noopener\" href=\"https:\/\/www.upf.edu\/web\/biomed\/news\/-\/asset_publisher\/CRcETTCV7Uyn\/content\/id\/261404791\/maximized\" target=\"_blank\">estudi recent<\/a> del <a rel=\"noreferrer noopener\" href=\"https:\/\/www.upf.edu\/web\/biomed\" target=\"_blank\">Departament de Medicina i Ci\u00e8ncies de la Vida, Universitat Pompeu Fabra (MELIS-UPF)<\/a> i la Universitat de Calif\u00f2rnia, demostra que les espores <strong>acumulen els potencials electroqu\u00edmics<\/strong> de l\u2019entorn a mode de senyal per a decidir quan despertar-se.<\/p>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<blockquote class=\"wp-block-quote has-text-align-center is-layout-flow wp-block-quote-is-layout-flow\"><p>\u201c<em>Aquest treball canvia la forma en qu\u00e8 pensem sobre les espores, que fins ara es consideraven objectes inerts<\/em>\u201d <br><strong>G\u00fcrol S\u00fcel<\/strong>, Universitat de Calif\u00f2rnia<\/p><\/blockquote>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">L&#8217;estudi s&#8217;ha realitzat amb espores de <em>Bacillus subtilis<\/em> a les quals se&#8217;ls hi han aplicat senyals ambientals que, individualment, s\u00f3n d\u2019una intensitat insuficient per a \u201cdespertar-les\u201d. I tal com explica en <strong><a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/jordi-garcia-ojalvo-dcexs-upf-volem-crear-models-acurats-i-personalitzats-del-cervell-de-cada-pacient\/\" target=\"_blank\">Jordi Garc\u00eda-Ojalvo<\/a><\/strong>, investigador del MELIS-UPF, gr\u00e0cies a un <strong>model matem\u00e0tic<\/strong> han descobert que \u201c<a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/demostren-que-els-bacteris-poden-emmagatzemar-informacio-de-manera-similar-a-les-neurones\/\" target=\"_blank\">igual que les neurones<\/a>, les espores <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/neurotransmissio-a-nivell-atomic\/\" target=\"_blank\">sumen al llarg del temps senyals petits i breus per a determinar si s\u2019aconsegueix un llindar<\/a>. I en arribar a aquest, inicien el seu retorn a la vida, de la mateixa forma que les neurones disparen un potencial d\u2019acci\u00f3 per a comunicar-se amb altres neurones\u201d. Curiosament, les espores fan aquesta integraci\u00f3 de senyals sense requerir energia metab\u00f2lica, mentre que les neurones s\u00f3n unes de les c\u00e8l\u00b7lules del nostre cos que m\u00e9s energia consumeixen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Els autors de la recerca asseguren que con\u00e8ixer com les espores tornen a la vida obre vies per a trobar nous m\u00e8todes per a <strong>combatre les espores pat\u00f2genes<\/strong> com l&#8217;\u00e0ntrax. I tamb\u00e9, podria donar-nos pistes sobre com \u00e9s la vida en els <a href=\"https:\/\/ellipse.prbb.org\/ca\/un-mapa-global-de-la-desertificacio-del-planeta\/\" target=\"_blank\" rel=\"noreferrer noopener\">ambients terrestres m\u00e9s extrems<\/a> i<a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/un-viatge-cientific-a-mart-sense-sortir-de-la-terra\/\" target=\"_blank\"> en altres planetes<\/a>.<\/p>\n\n\n\n<div style=\"height:46px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les espores bacterianes poden estar en estat de letargia desenes de milers d\u2019anys. Ara, un estudi amb participaci\u00f3 del MELIS-UPF mostra que les espores van acumulant l\u2019energia de l\u2019entorn per a saber si \u00e9s el moment idoni de \u201ctornar a la vida\u201d. <\/p>\n","protected":false},"author":29,"featured_media":32948,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[477,273],"new-type":[35],"class_list":["post-32846","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-bacteris","tag-melis-upf-ca","new-type-noticies"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/32846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=32846"}],"version-history":[{"count":19,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/32846\/revisions"}],"predecessor-version":[{"id":32924,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/32846\/revisions\/32924"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/32948"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=32846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=32846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=32846"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=32846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}