{"id":30055,"date":"2022-05-18T16:37:56","date_gmt":"2022-05-18T14:37:56","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=30055"},"modified":"2022-06-16T12:49:10","modified_gmt":"2022-06-16T10:49:10","slug":"descarregues-electriques-per-controlar-el-creixement-bacteria","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/descarregues-electriques-per-controlar-el-creixement-bacteria\/","title":{"rendered":"Desc\u00e0rregues el\u00e8ctriques per controlar el creixement bacteri\u00e0"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Un equip cient\u00edfic de la Universitat de Calif\u00f2rnia a San Diego juntament amb el <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> ha desenvolupat una nova tecnologia que permet <strong>controlar les comunitats bacterianes dels <a href=\"https:\/\/ellipse.prbb.org\/ca\/la-primera-pindola-viva-per-tractar-infeccions-resistents-als-antibiotics\/\" target=\"_blank\" rel=\"noreferrer noopener\">biofilms<\/a><\/strong>, que solen ser molt <a href=\"https:\/\/ellipse.prbb.org\/ca\/el-magnesi-afavoreix-la-supervivencia-dels-bacteris-front-a-antibiotics\/\" target=\"_blank\" rel=\"noreferrer noopener\">resistents als antibi\u00f2tics<\/a>. Es tracta d&#8217;una t\u00e8cnica que utilitza desc\u00e0rregues el\u00e8ctriques que permeten <strong>modificar el creixement bacteri\u00e0<\/strong> d&#8217;aquestes comunitats.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Els <strong>biofilms<\/strong> s\u00f3n col\u00f2nies de bacteris que poden cr\u00e9ixer en superf\u00edcies molt diverses que van des de la nostra pell fins a les canonades del clavegueram. S\u00f3n comunitats formades per <strong>c\u00e8l\u00b7lules gen\u00e8ticament id\u00e8ntiques<\/strong>, per\u00f2 <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\">amb <strong>funcions especialitzades<\/strong><\/a>. Aix\u00ed, <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/el-magnesi-afavoreix-la-supervivencia-dels-bacteris-front-a-antibiotics\/\" target=\"_blank\">dins d&#8217;un biofilm<\/a> hi trobem bacteris que s&#8217;encarreguen de formar la matriu o cola que mant\u00e9 unida la col\u00f2nia i bacteris que participen en la mobilitat i l&#8217;establiment del biofilm. Per mantenir la viabilitat d&#8217;aquestes comunitats microbianes, <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/es\/el-circuito-que-siguen-las-celulas-para-llegar-a-su-destino\/\" target=\"_blank\">cal que es mantingui un <strong>equilibri entre els diferents tipus cel\u00b7lulars<\/strong><\/a>, perqu\u00e8 si no el biofilm es podria tornar massa r\u00edgid o, per contra, desintegrar-se.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En aquest <a href=\"https:\/\/www.upf.edu\/web\/biomed\/news\/-\/asset_publisher\/CRcETTCV7Uyn\/content\/id\/257767826\/maximized\" target=\"_blank\" rel=\"noreferrer noopener\">estudi<\/a> s&#8217;ha aconseguit controlar el creixement dels biofilms gr\u00e0cies a la <strong>variaci\u00f3 de la proporci\u00f3 dels diferents tipus de c\u00e8l\u00b7lules<\/strong>. Aquest fet es deu al desenvolupament d&#8217;un <strong>dispositiu de microflu\u00eddica nou<\/strong> que, <strong>combinat amb una matriu d&#8217;el\u00e8ctrodes m\u00faltiples<\/strong>, permet aplicar desc\u00e0rregues el\u00e8ctriques localitzades. D&#8217;aquesta manera, s&#8217;ha aconseguit que les <strong>c\u00e8l\u00b7lules m\u00f2bils es multipliquin m\u00e9s f\u00e0cilment<\/strong> que les de la matriu, cosa que genera que el biofilm no estigui prou cohesionat i es desintegri.<\/p>\n\n\n\n<div style=\"height:70px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }<\/style>\n<div class=\"embed-container\"><iframe src=\"https:\/\/www.youtube.com\/embed\/UERNIAWnTW0\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe><\/div>\n\n\n\n<div style=\"height:70px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Una de les claus daquest efecte \u00e9s el <strong>paper dels ions<\/strong> en el funcionament cel\u00b7lular. <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 Garcia Ojalvo<\/a><\/strong>, catedr\u00e0tic de Biologia de Sistemes de la UPF i un dels autors de l&#8217;estudi, detalla que \u201cla regulaci\u00f3 del comportament de bacteris mitjan\u00e7ant el control de la seva composici\u00f3 i\u00f2nica encara \u00e9s poc coneguda\u201d. I el seu company <strong>Colin Comerci<\/strong>, primer autor de l&#8217;estudi, afegeix que \u201cels senyals electroqu\u00edmics que fem servir s\u00f3n similars als senyals utilitzats durant el desenvolupament en organismes m\u00e9s complexos com granotes, <a href=\"https:\/\/ellipse.prbb.org\/ca\/la-linia-lateral-del-peix-zebrafish\/\" target=\"_blank\" rel=\"noreferrer noopener\">peixos <\/a>o fins i tot humans. Per aix\u00f2 els nostres descobriments poden oferir analogies amb altres sistemes biol\u00f2gics\u201d.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Aquesta troballa proporciona una nova eina de control dels biofilms, podent modificar-ne la composici\u00f3 i el desenvolupament. Aix\u00ed, es podria aconseguir desestabilitzar aquestes comunitats bacterianes i posar <strong>remei a la gran <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/els-bacteris-poden-ajudar-se-entre-ells-a-resistir-millor-als-antibiotics\/\" target=\"_blank\">resist\u00e8ncia que els biofilms presenten contra els antibi\u00f2tics<\/a><\/strong>.<\/p>\n\n\n\n<div style=\"height:70px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Un estudi en qu\u00e8 ha participat MELIS-UPF ha desenvolupat una nova t\u00e8cnica basada en l&#8217;estimulaci\u00f3 el\u00e8ctrica que podria ajudar a inhibir el creixement dels biofilms bacterians, ajudant a posar remei a la seva resist\u00e8ncia a antibi\u00f2tics.<\/p>\n","protected":false},"author":28,"featured_media":30027,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[711,477,273],"new-type":[35,43],"class_list":["post-30055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-antibiotic-ca","tag-bacteris","tag-melis-upf-ca","new-type-noticies","new-type-recomanem"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/30055","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\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=30055"}],"version-history":[{"count":9,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/30055\/revisions"}],"predecessor-version":[{"id":30799,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/30055\/revisions\/30799"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/30027"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=30055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=30055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=30055"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=30055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}