{"id":98527,"date":"2025-01-08T08:48:32","date_gmt":"2025-01-08T07:48:32","guid":{"rendered":"https:\/\/www.bioecoactual.com\/?p=98527"},"modified":"2025-01-08T08:48:32","modified_gmt":"2025-01-08T07:48:32","slug":"polifenols-aliats-contra-alergia","status":"publish","type":"post","link":"https:\/\/www.bioecoactual.com\/ca\/2025\/01\/08\/polifenols-aliats-contra-alergia\/","title":{"rendered":"Polifenols, els aliats contra l\u2019al\u00b7l\u00e8rgia"},"content":{"rendered":"<p>Els <strong>polifenols<\/strong> s\u00f3n productes naturals derivats dels vegetals que es troben en fulles, fruites, llavors, etc. i que contribueixen a donar-los color. Els polifenols inclouen milers de compostos que es classifiquen en fam\u00edlies. D\u2019entre totes les fam\u00edlies destaca la dels flavonoides, per\u00f2 tamb\u00e9 hi ha estilbens i \u00e0cids fen\u00f2lics, entre d\u2019altres. La ingesta de polifenols t\u00e9 lloc a trav\u00e9s de fruites, verdures, llegums i tamb\u00e9 en derivats com el vi, el te i el cacau.<br \/>\n<!--more--><\/p>\n<figure id=\"attachment_98520\" aria-describedby=\"caption-attachment-98520\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-98520 size-full\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2.jpg\" alt=\"Polifenols\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2.jpg 1000w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2-768x512.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2-630x420.jpg 630w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2-696x464.jpg 696w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-98520\" class=\"wp-caption-text\">123RFLimited\u00a9andreycherkasov. El te aporta polifenols<\/figcaption><\/figure>\n<p>Per altra banda, <strong>l\u2019al\u00b7l\u00e8rgia \u00e9s una resposta err\u00f2nia del sistema immunitari<\/strong>. Aquest sistema org\u00e0nic, que va molt b\u00e9 per a la defensa contra microorganismes causants de malalties, pot activar-se contra subst\u00e0ncies inn\u00f2cues com el pol\u00b7len, la pols de casa, aliments i medicaments. Un dels mecanismes de defensa del sistema immunitari \u00e9s la fabricaci\u00f3 d\u2019anticossos. Quan hi ha una resposta al\u00b7l\u00e8rgica tamb\u00e9 es desenvolupen anticossos, per\u00f2 estructuralment s\u00f3n diferents dels que es fan davant d\u2019un microorganisme, perqu\u00e8 s\u00f3n immunoglobulines E (IgE). Aquest tipus d\u2019antic\u00f2s \u00e9s capa\u00e7 d\u2019unir-se a unes c\u00e8l\u00b7lules repartides per tot el nostre cos com s\u00f3n els mast\u00f2cits. Quan una persona al\u00b7l\u00e8rgica, que ha desenvolupat IgE contra una subst\u00e0ncia inn\u00f2cua, es posa en contacte amb aquesta subst\u00e0ncia, es produeix l\u2019alliberament de gran quantitat d\u2019histamina i altres mediadors dels mast\u00f2cits. Aquests mediadors s\u00f3n els responsables que aparegui, de forma molt r\u00e0pida, secreci\u00f3 nasal (rinitis), dificultat respirat\u00f2ria (asma), granets (urtic\u00e0ria), etc. Un dels tractaments que s\u2019utilitza en l\u2019al\u00b7l\u00e8rgia \u00e9s l\u2019administraci\u00f3 d\u2019antihistam\u00ednics, que neutralitzen l\u2019alliberament del principal mediador d\u2019aquestes reaccions.<\/p>\n<blockquote><p>La ingesta de polifenols t\u00e9 lloc a trav\u00e9s de fruites, verdures, llegums i tamb\u00e9 en derivats com el vi, el te i el cacau<\/p><\/blockquote>\n<h2>Quin paper poden tenir els polifenols en un proc\u00e9s al\u00b7l\u00e8rgic?<\/h2>\n<p>Al 1950 ja es va publicar un estudi cient\u00edfic que mostrava els beneficis de la ingesta de vitamina P, com es deien antigament els flavonoides, en un model d\u2019al\u00b7l\u00e8rgia<sup>1<\/sup>. Des d\u2019aleshores, s\u2019han portat a terme molts estudis que consisteixen en induir un proc\u00e9s al\u00b7l\u00e8rgic a rates o ratolins i mesurar el comportament de les seves c\u00e8l\u00b7lules al\u00b7l\u00e8rgiques, la producci\u00f3 d\u2019anticossos IgE o les manifestacions associades com la rinitis o l\u2019asma. Aquests estudis han demostrat que la ingesta de certs polifenols pot disminuir l\u2019inici de la resposta al\u00b7l\u00e8rgica, la producci\u00f3 d\u2019IgE, l\u2019alliberament d\u2019histamina i la gravetat de manifestacions al\u00b7l\u00e8rgiques. En aquest sentit, es pot destacar l\u2019efecte del resveratrol (de la fam\u00edlia dels estilbens), \u00e0cids fen\u00f2lics i flavonoides com quercetina, curcumina, catequines i antocianidines<sup>2<\/sup>.<\/p>\n<figure id=\"attachment_98523\" aria-describedby=\"caption-attachment-98523\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-98523 size-full\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-1.jpg\" alt=\"Polifenols\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-1.jpg 1000w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-1-768x512.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-1-630x420.jpg 630w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-1-696x464.jpg 696w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-98523\" class=\"wp-caption-text\">123RF Limited\u00a9tanacha. Rinitis<\/figcaption><\/figure>\n<p>Un cas especial d\u2019efecte antial\u00b7l\u00e8rgic dels polifenols es troba en la prevenci\u00f3 de l\u2019<strong>al\u00b7l\u00e8rgia aliment\u00e0ria<\/strong>. En aquestes situacions s\u2019ha demostrat que els polifenols es poden unir a l\u2019aliment que causa l\u2019al\u00b7l\u00e8rgia i disminuir la seva capacitat per provocar aquesta resposta. Aquest efecte s\u2019ha descrit en flavonoides (com quercetina i proantocianidines) i \u00e0cids fen\u00f2lics. D\u2019aquesta manera, els polifenols inhibeixen la posada en marxa de la reacci\u00f3 al\u00b7l\u00e8rgica de forma molt primerenca<sup>3<\/sup>.<\/p>\n<p>Els estudis cl\u00ednics, realizats en humans, son m\u00e9s escassos. Existeixen evid\u00e8ncies del paper protector dels polifenols que es poden associar amb una reducci\u00f3 de les manifestacions al\u00b7l\u00e8rgiques. S\u2019han fet estudis en pacients amb dermatitis at\u00f2pica, rinitis al\u00b7l\u00e8rgica i asma, entre d\u2019altres.<\/p>\n<blockquote><p>Un cas especial d\u2019efecte antial\u00b7l\u00e8rgic dels polifenols es troba en la prevenci\u00f3 de l\u2019al\u00b7l\u00e8rgia aliment\u00e0ria<\/p><\/blockquote>\n<p>Per exemple, s\u2019ha demostrat com polifenols de la poma o del tom\u00e0quet (que inclouen flavonoides i \u00e0cids fen\u00f2lics) disminueixen l\u2019\u00e8czema at\u00f2pic i la rinitis al\u00b7l\u00e8rgica<sup>4<\/sup>. Tanmateix, es necessiten m\u00e9s estudis que permetin identificar els millors polifenols, con\u00e8ixer les quantitats necess\u00e0ries i el r\u00e9gim d\u2019administraci\u00f3 per tenir poder antial\u00b7l\u00e8rgic. Tamb\u00e9 ser\u00e0 important saber el tipus de formulaci\u00f3 a administrar, com a aliment funcional, suplement o nutrac\u00e8utic (forma farmac\u00e8utica com c\u00e0psules, pastilles, xarops&#8230;), en un r\u00e8gim preventiu o curatiu.<\/p>\n<figure id=\"attachment_98517\" aria-describedby=\"caption-attachment-98517\" style=\"width: 1000px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-98517 size-full\" src=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-3.jpg\" alt=\"polifenols \" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-3.jpg 1000w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-3-768x512.jpg 768w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-3-630x420.jpg 630w, https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-3-696x464.jpg 696w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-98517\" class=\"wp-caption-text\">123RFLimited\u00a9alexandrmusuc. Tom\u00e0quets cherry frescos<\/figcaption><\/figure>\n<p>A la Unversitat de Barcelona, des de fa anys, s\u2019estan duent a terme estudis per tal de concretar els efectes dels polifenols a les reaccions al\u00b7l\u00e8rgiques. En aquest sentit, grups de recerca de l\u2019Institut de Recerca en Nutrici\u00f3 i Seguretat Aliment\u00e0ria (INSA) han analitzat l\u2019efecte de flavonoides del cacau i dels c\u00edtrics sobre models experimentals d\u2019al\u00b7l\u00e8rgia<sup>5<\/sup>. A m\u00e9s a m\u00e9s, recentment s\u2019ha iniciat un projecte subvencionat pel Ministeri de Ci\u00e8ncia, Innovaci\u00f3 i Universitats (PID2023-151804OB-I00) amb intervencions nutricionals a animals durant la gestaci\u00f3 i la lact\u00e0ncia per saber la influ\u00e8ncia que poden tenir aquests polifenols administrats a la mare en la resposta al\u00b7l\u00e8rgica de la descend\u00e8ncia. Tot aix\u00f2 ha de permetre anar aprofundint m\u00e9s i millor sobre el potencial dels polifenols per lluitar contra l\u2019al\u00b7l\u00e8rgia.<\/p>\n<h4>Refer\u00e8ncies:<\/h4>\n<ol>\n<li><span style=\"font-size: 10pt;\">Clark WG, MacKay EM. Effect of flavonoid (vitamin P-like) substances on histamine toxicity, anaphylactic shock, histamine-enhanced capillary permeability to dye, and bleeding time; with data on the toxicity of flavonoids. J Allergy. 1950; 21(2): 133-47. <\/span><\/li>\n<li><span style=\"font-size: 10pt;\">D\u0119bi\u0144ska A, Soza\u0144ska B. Dietary Polyphenols-Natural Bioactive Compounds with Potential for Preventing and Treating Some Allergic Conditions. Nutrients. 2023; 15(22): 4823.<\/span><\/li>\n<li><span style=\"font-size: 10pt;\">Yang H, Qu Y, Gao Y, Sun S, Ding R, Cang W, Wu R, Wu J. Role of the dietary components in food allergy: A comprehensive review. Food Chem. 2022; 386: 132762. <\/span><\/li>\n<li><span style=\"font-size: 10pt;\">de Almeida Brasiel PG, Guimar\u00e3es FV, Rodrigues PM, Bou-Habib DC, Carvalho VF. Therapeutic Efficacy of Flavonoids in Allergies: A Systematic Review of Randomized Controlled Trials. J Immunol Res. 2022; 2022: 8191253.<\/span><\/li>\n<li><span style=\"font-size: 10pt;\">Abril-Gil M, P\u00e9rez-Cano FJ, Franch \u00c0, Castell M. Effect of a cocoa-enriched diet on immune response and anaphylaxis in a food allergy model in Brown Norway rats. J Nutr Biochem. 2016; 27: 317-26.<\/span><\/li>\n<\/ol>\n<p><strong>Autora: <\/strong>Dra. Margarida Castell, Professora de la Facultat de Farm\u00e0cia i Ci\u00e8ncies de l\u2019Alimentaci\u00f3 i investigadora de l\u2019INSA, Universitat de Barcelona<\/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 \/>\nLlegir <\/strong><a href=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2024\/12\/BioEcoActual_Gener_2025.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Bio Eco Actual Gener 2025<\/strong><\/a><\/p>\n<p><iframe style=\"border: none; width: 100%; height: 520px;\" src=\"\/\/e.issuu.com\/embed.html?d=bioecoactual_gener_2025&amp;hideIssuuLogo=true&amp;showOtherPublicationsAsSuggestions=true&amp;u=bioecoactual\" allowfullscreen=\"allowfullscreen\"> <\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Els polifenols s&oacute;n productes naturals derivats dels vegetals que es troben en fulles, fruites, llavors, etc. i que contribueixen a donar-los color. Els polifenols inclouen milers de compostos que es classifiquen en fam&iacute;lies. D&rsquo;entre totes les fam&iacute;lies destaca la dels flavonoides, per&ograve; tamb&eacute; hi ha estilbens i &agrave;cids fen&ograve;lics, entre d&rsquo;altres. La ingesta de polifenols [&hellip;]<\/p>\n","protected":false},"author":419,"featured_media":98521,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7166],"tags":[],"class_list":["post-98527","post","type-post","status-publish","format-standard","has-post-thumbnail","category-nutricio"],"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>Polifenols, els aliats contra l\u2019al\u00b7l\u00e8rgia - Bio Eco Actual<\/title>\n<meta name=\"description\" content=\"Els polifenols s\u00f3n productes naturals derivats dels vegetals que es troben en fulles, fruites, llavors, etc. i que contribueixen a donar-los color\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.bioecoactual.com\/ca\/2025\/01\/08\/polifenols-aliats-contra-alergia\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polifenols, els aliats contra l\u2019al\u00b7l\u00e8rgia\" \/>\n<meta property=\"og:description\" content=\"Els polifenols s\u00f3n productes naturals derivats dels vegetals que es troben en fulles, fruites, llavors, etc. i que contribueixen a donar-los color\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.bioecoactual.com\/ca\/2025\/01\/08\/polifenols-aliats-contra-alergia\/\" \/>\n<meta property=\"og:site_name\" content=\"Bio Eco Actual\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/BioEcoActual\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-08T07:48:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.bioecoactual.com\/wp-content\/uploads\/2025\/01\/polifenoles-2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"667\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bio Eco Actual\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bioecoactual\" \/>\n<meta name=\"twitter:site\" content=\"@bioecoactual\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bio Eco Actual\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/\"},\"author\":{\"name\":\"Bio Eco Actual\",\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/#\\\/schema\\\/person\\\/43c1f0817cbc73f37ce66f2978084ceb\"},\"headline\":\"Polifenols, els aliats contra l\u2019al\u00b7l\u00e8rgia\",\"datePublished\":\"2025-01-08T07:48:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/\"},\"wordCount\":1124,\"publisher\":{\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.bioecoactual.com\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/polifenoles-2.jpg\",\"articleSection\":[\"Nutrici\u00f3\"],\"inLanguage\":\"ca-ES\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/\",\"url\":\"https:\\\/\\\/www.bioecoactual.com\\\/ca\\\/2025\\\/01\\\/08\\\/polifenols-aliats-contra-alergia\\\/\",\"name\":\"Polifenols, els aliats contra l\u2019al\u00b7l\u00e8rgia - 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