{"id":86669,"date":"2025-03-25T08:28:19","date_gmt":"2025-03-25T07:28:19","guid":{"rendered":"https:\/\/helloproject.es\/vigilancia\/correr-una-maraton-disminuye-la-mielina-de-las-neuronas-pero-de-forma-reversible\/"},"modified":"2025-03-25T08:28:19","modified_gmt":"2025-03-25T07:28:19","slug":"correr-una-maraton-disminuye-la-mielina-de-las-neuronas-pero-de-forma-reversible","status":"publish","type":"post","link":"https:\/\/helloproject.es\/vigilancia\/correr-una-maraton-disminuye-la-mielina-de-las-neuronas-pero-de-forma-reversible\/","title":{"rendered":"Correr una marat\u00f3n disminuye la mielina de las neuronas, pero de forma reversible"},"content":{"rendered":"<p>Los corredores de maratones experimentan una disminuci\u00f3n de la cantidad de mielina -una sustancia que rodea las neuronas- en ciertas regiones del cerebro tras un marat\u00f3n, seg\u00fan <a href=\"https:\/\/www.nature.com\/articles\/s42255-025-01244-7\" target=\"_blank\">un estudio<\/a> con diez participantes publicado en Nature Metabolism y liderado por la Universidad del Pa\u00eds Vasco (UPV\/EHU). El efecto se invirti\u00f3 por completo dos meses despu\u00e9s de la carrera.<\/p>\n<p>Seg\u00fan los autores, se necesita m\u00e1s investigaci\u00f3n para evaluar si estos cambios tienen alg\u00fan efecto sobre las funciones neurofisiol\u00f3gicas y cognitivas asociadas a esas regiones del cerebro, pero el trabajo revela que la mayor parte de la mielina del cerebro no se ve afectada.<\/p>\n<p>La mielina se compone de l\u00edpidos y rodea las neuronas para actuar como aislante el\u00e9ctrico<\/p>\n<p>El ejercicio de larga duraci\u00f3n obliga al cuerpo humano a recurrir a sus reservas energ\u00e9ticas. Los corredores de marat\u00f3n, por ejemplo, utilizan principalmente hidratos de carbono, como el gluc\u00f3geno, como fuente de energ\u00eda, pero recurren a las grasas cuando el gluc\u00f3geno se agota en los m\u00fasculos. La mielina, que rodea las neuronas del cerebro y act\u00faa como aislante el\u00e9ctrico, se compone principalmente de l\u00edpidos, y estudios anteriores en roedores sugieren que estos l\u00edpidos pueden actuar como reserva energ\u00e9tica en condiciones metab\u00f3licas extremas.<\/p>\n<p>El equipo liderado por\u00a0Carlos Matute analiz\u00f3 im\u00e1genes del cerebro tomadas a trav\u00e9s de resonancia magn\u00e9tica de ocho corredores hombres y dos mujeres antes y 48 horas despu\u00e9s de la carrera de 42 kil\u00f3metros. Tambi\u00e9n tomaron im\u00e1genes de los cerebros de dos de los corredores dos semanas despu\u00e9s y de los de seis corredores dos meses despu\u00e9s como seguimiento.<\/p>\n<p><a><\/a><\/p>\n<h2>Reducci\u00f3n de mielina en 12 zonas del cerebro<\/h2>\n<p>Es necesario seguir investigando para establecer c\u00f3mo se relacionan formas m\u00e1s extremas de ejercicio con la cantidad de mielina en el cerebro<\/p>\n<p>Al medir la cantidad de mielina, los autores descubrieron una reducci\u00f3n constante del contenido de esta sustancia en 12 zonas de materia blanca del cerebro. Estas zonas est\u00e1n relacionadas con la coordinaci\u00f3n motora y la integraci\u00f3n sensorial y emocional.\u00a0Al cabo de dos semanas, las concentraciones de mielina hab\u00edan aumentado sustancialmente, y se hab\u00edan recuperado totalmente dos meses despu\u00e9s del marat\u00f3n.<\/p>\n<p>Los investigadores se\u00f1alan que una limitaci\u00f3n del estudio es el peque\u00f1o tama\u00f1o de la muestra y que son necesarias pruebas en una cohorte mayor. Adem\u00e1s, es necesario seguir investigando para establecer c\u00f3mo se relacionan formas m\u00e1s extremas de ejercicio con la cantidad de mielina en el cerebro.<\/p>\n<p>Referencia:<\/p>\n<p>Pedro Ramos-Cabrer et al. \u201cReversible reduction in brain myelin content upon marathon running\u201d.\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s42255-025-01244-7\" target=\"_blank\">Nature Metabolism<\/a> (2025)\u00a0<\/p>","protected":false},"excerpt":{"rendered":"<p>Los corredores de maratones experimentan una disminuci\u00f3n de la cantidad de mielina -una sustancia que rodea las neuronas- en ciertas regiones del cerebro tras un marat\u00f3n, seg\u00fan un estudio con diez participantes publicado en Nature Metabolism y liderado por la Universidad del Pa\u00eds Vasco (UPV\/EHU). El efecto se invirti\u00f3 por completo dos meses despu\u00e9s de [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[5],"tags":[],"class_list":["post-86669","post","type-post","status-publish","format-standard","hentry","category-noticias"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.9 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Correr una marat\u00f3n disminuye la mielina de las neuronas, pero de forma reversible - bip4ex<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/helloproject.es\/vigilancia\/correr-una-maraton-disminuye-la-mielina-de-las-neuronas-pero-de-forma-reversible\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Correr una marat\u00f3n disminuye la mielina de las neuronas, pero de forma reversible\" \/>\n<meta property=\"og:description\" content=\"Los corredores de maratones experimentan una disminuci\u00f3n de la cantidad de mielina -una sustancia que rodea las neuronas- en ciertas regiones del cerebro tras un marat\u00f3n, seg\u00fan un estudio con diez participantes publicado en Nature Metabolism y liderado por la Universidad del Pa\u00eds Vasco (UPV\/EHU). 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