{"id":122085,"date":"2026-01-20T08:58:13","date_gmt":"2026-01-20T07:58:13","guid":{"rendered":"https:\/\/www.bioecoactual.com\/?p=122085"},"modified":"2026-01-20T08:58:13","modified_gmt":"2026-01-20T07:58:13","slug":"resistencia-antibiotics-cadena-alimentaria","status":"publish","type":"post","link":"https:\/\/www.bioecoactual.com\/ca\/2026\/01\/20\/resistencia-antibiotics-cadena-alimentaria\/","title":{"rendered":"La resist\u00e8ncia als antibi\u00f2tics tamb\u00e9 \u00e9s a la cadena aliment\u00e0ria"},"content":{"rendered":"<p>La<strong> resist\u00e8ncia als antibi\u00f2tics<\/strong> \u00e9s un dels reptes m\u00e9s grans de salut p\u00fablica. Apareix quan els bacteris deixen de ser sensibles als tractaments habituals, cosa que dificulta la curaci\u00f3 d\u2019infeccions que abans eren senzilles. No \u00e9s un problema lluny\u00e0 ni exclusiu dels hospitals: comen\u00e7a a molts llocs, tamb\u00e9 a la cadena aliment\u00e0ria. No s\u00f3n les persones que es tornen resistents, s\u00f3n els bacteris els que es tornen resistents i com a conseq\u00fc\u00e8ncia, alguns antibi\u00f2tics deixen de funcionar. Per aix\u00f2, calen tractaments m\u00e9s llargs, m\u00e9s costosos, i augmenta el risc de complicacions. Per aix\u00f2 \u00e9s tan important con\u00e8ixer <strong>com i on<\/strong> circulen els gens de resist\u00e8ncia, tamb\u00e9 a la cadena aliment\u00e0ria.<br \/>\n<!--more--><\/p>\n<figure id=\"attachment_122078\" aria-describedby=\"caption-attachment-122078\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-122078\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-1.jpg\" alt=\"resistencia a los antibi\u00f3ticos\" width=\"1000\" height=\"672\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-1.jpg 1000w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-1-768x516.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-1-625x420.jpg 625w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-1-696x468.jpg 696w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-122078\" class=\"wp-caption-text\">123RF Limited\u00a9livroomstudio. Bacteris<\/figcaption><\/figure>\n<h2>Conceptes claus per entendre el problema<\/h2>\n<p>Per entendre la resist\u00e8ncia, cal recordar un concepte b\u00e0sic: l\u2019<strong>ADN<\/strong> \u00e9s la mol\u00e8cula que cont\u00e9 la informaci\u00f3 gen\u00e8tica de tots els \u00e9ssers vius. Est\u00e0 format per quatre unitats qu\u00edmiques, A, T, C i G, que funcionen com un codi; la combinaci\u00f3 d\u2019aquestes unitats dona lloc als gens, que donen les instruccions a les c\u00e8l\u00b7lules per fer les funcions essencials.<\/p>\n<p>Als bacteris, alguns gens contenen mecanismes molt efica\u00e7os de defensa davant els antibi\u00f2tics: els permeten neutralitzar-los, expulsar-los o modificar la diana on actua el medicament. I el m\u00e9s preocupant \u00e9s que aquests gens es poden moure d\u2019un bacteri a un altre, fins i tot entre esp\u00e8cies diferents. Con\u00e8ixer-los i veure com es transmeten ens ajuda a comprendre com sorgeixen les resist\u00e8ncies i com viatgen per la cadena aliment\u00e0ria. El conjunt de tots els <strong>gens de resist\u00e8ncia<\/strong> presents en un aliment o al seu entorn s\u2019anomena <strong>resistoma<\/strong>.<\/p>\n<blockquote><p>Cada cop trobem infeccions m\u00e9s dif\u00edcils de tractar, i alguns f\u00e0rmacs poden deixar de funcionar just quan m\u00e9s els necessitem<\/p><\/blockquote>\n<h3>Un estudi europeu sense precedents<\/h3>\n<p>Per con\u00e8ixer millor aquest fenomen, diversos centres de recerca europeus, com el CSIC a Espanya, van dur a terme l\u2019estudi m\u00e9s exhaustiu realitzat fins ara. El projecte va analitzar m\u00e9s de 2.000 mostres preses a <strong>100 empreses de 17 pa\u00efsos europeus<\/strong>, que inclo\u00efen aliments llestos per a consum, mat\u00e8ries primeres, aigua, equips i superf\u00edcies de processament. Aquesta an\u00e0lisi tan \u00e0mplia va permetre obtenir una \u201cfotografia microbiol\u00f2gica\u201d de tota la cadena aliment\u00e0ria. Els resultats, publicats a<em> Nature Microbiology<\/em>, subratllen la necessitat de considerar la resist\u00e8ncia antimicrobiana com un fenomen que comen\u00e7a molt abans d\u2019arribar a l\u2019hospital.<\/p>\n<h3>Hallazgo clave: los genes de resistencia est\u00e1n muy presentes<\/h3>\n<p>Troballa clau: els gens de resist\u00e8ncia s\u00f3n molt presents L\u2019estudi va detectar que <strong>m\u00e9s del 70%<\/strong> dels gens de resist\u00e8ncia coneguts apareixen a algun punt de la cadena aliment\u00e0ria. A m\u00e9s, <strong>6 de cada 10 mostres<\/strong> contenien almenys un gen de resist\u00e8ncia. Els gens m\u00e9s freq\u00fcents atorgaven resist\u00e8ncia a fam\u00edlies d\u2019antibi\u00f2tics d\u2019\u00fas habitual en medicina humana i veterin\u00e0ria: Tetraciclines, Betalact\u00e0mics (com amoxicil\u00b7lina), Aminogluc\u00f2sids (com neomicina) i Macr\u00f2lids (com azitromicina).<\/p>\n<figure id=\"attachment_122081\" aria-describedby=\"caption-attachment-122081\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-122081\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-2.jpg\" alt=\"resistencia a los antibi\u00f3ticos\" width=\"1000\" height=\"416\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-2.jpg 1000w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-2-768x319.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2026\/01\/antibioticos-2-696x290.jpg 696w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-122081\" class=\"wp-caption-text\">123RF Limited\u00a9ra2studio<\/figcaption><\/figure>\n<h3>En quins bacteris es van trobar aquests gens?<\/h3>\n<p>L\u2019estudi va identificar que diferents bacteris, alguns molt coneguts per causar infeccions humanes, <em>E. coli, S. aureus, K. pneumoniae<\/em>, i altres t\u00edpiques de l\u2019entorn alimentari,<em> S. equorum, A. johnsonii<\/em>, portaven gens de resist\u00e8ncia a l\u2019ADN. Aix\u00f2 vol dir que aquests bacteris tenen la capacitat de sobreviure a determinats antibi\u00f2tics i, per tant, poden participar en l\u2019expansi\u00f3 d\u2019aquestes resist\u00e8ncies.<\/p>\n<p>A m\u00e9s, prop del <strong>40%<\/strong> dels gens identificats estaven associats a <strong>elements gen\u00e8tics m\u00f2bils<\/strong>, \u00e9s a dir, fragments d\u2019ADN que actuen com a vehicles capa\u00e7os de traslladar f\u00e0cilment aquests gens entre bacteris. Aquesta mobilitat accelera la seva expansi\u00f3 i converteix la cadena aliment\u00e0ria en un punt clau per vigilar el fenomen.<\/p>\n<h3>I qu\u00e8 passa amb la producci\u00f3 ecol\u00f2gica?<\/h3>\n<p>Les granges ecol\u00f2giques utilitzen menys antibi\u00f2tics, i aix\u00f2 sol traduir-se en nivells m\u00e9s baixos de bacteris resistents. Una revisi\u00f3 de <strong>72 estudis a 22 pa\u00efsos<\/strong> va trobar una mitjana del 28% de resist\u00e8ncia en granges convencionals davant el 18% en les ecol\u00f2giques (Ager et al., 2023).<\/p>\n<blockquote><p>No s\u00f3n les persones que es tornen resistents, s\u00f3n els bacteris els que es tornen resistents i com a conseq\u00fc\u00e8ncia, alguns antibi\u00f2tics deixen de funcionar<\/p><\/blockquote>\n<p>El model ecol\u00f2gic, per tant, redueix la pressi\u00f3 antibi\u00f2tica, per\u00f2 no pot eliminar completament la circulaci\u00f3 de bacteris resistents, perqu\u00e8 aquests formen part de l\u2019entorn natural. El s\u00f2l, l\u2019aigua, els fems procedents d\u2019altres explotacions o la fauna silvestre poden introduir bacteris resistents a qualsevol granja, tamb\u00e9 a les ecol\u00f2giques. Per aix\u00f2, encara que la resist\u00e8ncia \u00e9s menys freq\u00fcent, <strong>no desapareix del tot<\/strong>.<\/p>\n<p>Un estudi nord-americ\u00e0 va mostrar que les granges av\u00edcoles que van passar a producci\u00f3 ecol\u00f2gica van reduir significativament els <em>Enterococcus <\/em>resistents i multiresistents (Sapkota et al., 2011). De manera similar, una revisi\u00f3 sistem\u00e0tica (Miranda et al., 2019) va confirmar que les resist\u00e8ncies en sistemes ecol\u00f2gics no s\u00f3n inexistents, per\u00f2 s\u00ed notablement m\u00e9s baixes que en producci\u00f3 convencional.<\/p>\n<h3>La import\u00e0ncia de la resist\u00e8ncia als antibi\u00f2tics<\/h3>\n<p>Les resist\u00e8ncies als antibi\u00f2tics tenen conseq\u00fc\u00e8ncies molt rellevants per a la salut. Cada cop trobem infeccions m\u00e9s dif\u00edcils de tractar, i alguns f\u00e0rmacs poden deixar de funcionar just quan m\u00e9s els necessitem. L\u2019efic\u00e0cia dels antibi\u00f2tics \u00e9s un recurs limitat, i protegir-lo dep\u00e8n de tothom: professionals sanitaris, sector alimentari i ciutadania.<\/p>\n<p><strong>Autora:\u00a0<\/strong>Dra. Marta Castells, Farmac\u00e8utica<\/p>\n<p><a href=\"https:\/\/www.bioecoactual.com\/ca\/subscripcio\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Subscriu-te<\/strong><\/a><strong> a la Newsletter i rep cada mes Bio Eco Actual gratis al teu correu<\/strong><\/p>\n<p><strong><em>Bio Eco Actual<\/em><\/strong>, <em>el teu mensual 100% ecol\u00f2gic<\/em><strong><br \/>\n<\/strong><a href=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/12\/BioEcoActual_Gener_2026.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><strong> Llegir Bio Eco Actual Gener 2026<\/strong><\/a><\/p>\n<p><iframe style=\"border: none; width: 100%; height: 520px;\" src=\"\/\/e.issuu.com\/embed.html?d=bioecoactual_gener_2026&amp;hideIssuuLogo=true&amp;showOtherPublicationsAsSuggestions=true&amp;u=bioecoactual\" allowfullscreen=\"allowfullscreen\"> <\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La resist&egrave;ncia als antibi&ograve;tics &eacute;s un dels reptes m&eacute;s grans de salut p&uacute;blica. Apareix quan els bacteris deixen de ser sensibles als tractaments habituals, cosa que dificulta la curaci&oacute; d&rsquo;infeccions que abans eren senzilles. No &eacute;s un problema lluny&agrave; ni exclusiu dels hospitals: comen&ccedil;a a molts llocs, tamb&eacute; a la cadena aliment&agrave;ria. No s&oacute;n les [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":122079,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7166,7176],"tags":[],"class_list":["post-122085","post","type-post","status-publish","format-standard","has-post-thumbnail","category-nutricio","category-seguretat-alimentaria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>La resist\u00e8ncia als antibi\u00f2tics tamb\u00e9 \u00e9s a la cadena aliment\u00e0ria - Bio Eco Actual<\/title>\n<meta name=\"description\" content=\"La resist\u00e8ncia als antibi\u00f2tics \u00e9s un dels reptes m\u00e9s grans de salut p\u00fablica. 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