{"id":212059,"date":"2026-04-23T17:07:09","date_gmt":"2026-04-23T21:07:09","guid":{"rendered":"https:\/\/infoelnuevonorte.com\/?p=212059"},"modified":"2026-04-23T17:07:11","modified_gmt":"2026-04-23T21:07:11","slug":"describen-como-el-sindrome-de-down-altera-el-desarrollo-del-cerebro-antes-de-nacer","status":"publish","type":"post","link":"https:\/\/infoelnuevonorte.com\/?p=212059","title":{"rendered":"Describen c\u00f3mo el s\u00edndrome de Down altera el desarrollo del cerebro antes de nacer"},"content":{"rendered":"\n<p><a href=\"https:\/\/deultimominuto.net\/category\/estilo\/\"><\/a><\/p>\n\n\n<div class=\"td_block_wrap tdb_single_content tdi_195 td-pb-border-top td_block_template_1 td-post-content tagdiv-type\" data-td-block-uid=\"tdi_195\">\n<div class=\"tdb-block-inner td-fix-index\">\n<!--[if lt IE 9]><script>document.createElement('audio');<\/script><![endif]-->\n<audio class=\"wp-audio-shortcode\" id=\"audio-212059-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"https:\/\/infoelnuevonorte.com\/wp-content\/uploads\/2026\/04\/ttsmaker-vip-file-2026-4-23-17-6-13.mp3?_=1\" \/><a href=\"https:\/\/infoelnuevonorte.com\/wp-content\/uploads\/2026\/04\/ttsmaker-vip-file-2026-4-23-17-6-13.mp3\">https:\/\/infoelnuevonorte.com\/wp-content\/uploads\/2026\/04\/ttsmaker-vip-file-2026-4-23-17-6-13.mp3<\/a><\/audio>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">El<strong>\u00a0s\u00edndrome de Down<\/strong>\u00a0altera el\u00a0<strong>desarrollo del cerebro humano<\/strong>\u00a0antes del nacimiento y ahora un equipo de investigadores ha creado un mapa molecular que explica c\u00f3mo, lo que podr\u00eda servir para desarrollar estrategias terap\u00e9uticas en el futuro.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Un equipo de investigadores dirigidos por el ecuatoriano,<strong>\u00a0Luis De la Torre-Ubieta<\/strong>, de la\u00a0<strong>Universidad de California-Los \u00c1ngeles (UCLA),\u00a0<\/strong>ha analizado 100.000 n\u00facleos de muestras de neocorteza cerebral prenatal de 26 donantes humanos con s\u00edndrome de Down.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Las muestras correspond\u00edan a las semanas gestacionales de la 13 a 23, un periodo clave durante el cual se generan todas las neuronas corticales que una persona tendr\u00e1 a lo largo de su vida.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Los hallazgos, recogidos este jueves en la\u00a0<strong>revista Science<\/strong>, apuntan a que el s\u00edndrome de Down altera la secuencia de desarrollo de ese proceso de formaci\u00f3n de las neuronas corticales, creando cambios que explicar\u00edan las dificultades de cognici\u00f3n, aprendizaje y procesamiento sensorial que m\u00e1s tarde sufren estas personas.<\/span><\/p>\n<h2 class=\"wp-block-heading\" style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">\u201cPor primera vez, hemos comprendido con gran detalle qu\u00e9 ocurre en el cerebro en desarrollo de las personas con s\u00edndrome de Down\u201d, subraya Torre-Ubieta, investigador del Centro Eli y Edythe Broad de Medicina Regenerativa e Investigaci\u00f3n con C\u00e9lulas Madre de la UCLA.<\/span><\/h2>\n<h2 class=\"wp-block-heading\" style=\"text-align: justify;\"><span style=\"font-size: 14pt;\"><strong>Cubriendo una laguna fundamental<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">El campo de la investigaci\u00f3n sobre el s\u00edndrome de Down se ha centrado hist\u00f3ricamente en dos \u00e1reas:\u00a0<strong>el cerebro adulto y la relaci\u00f3n del trastorno con la neurodegeneraci\u00f3n<\/strong>. Y es que la gran mayor\u00eda de las personas con s\u00edndrome de Down desarrollan la enfermedad de Alzheimer a partir de los 60 a\u00f1os.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Lo que segu\u00eda sin descifrar en humanos es c\u00f3mo la afecci\u00f3n moldea el propio cerebro en desarrollo. Ahora, el equipo de Torre-Ubieta lo ha conseguido gracias al mapeo molecular logrado a trav\u00e9s de las muestras.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Para entenderlo, hay que partir de la base de que el\u00a0<strong>desarrollo de la neocorteza prenatal<\/strong> suele seguir una secuencia estrictamente coordinada.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">En primer lugar, las c\u00e9lulas progenitoras o c\u00e9lulas madre del cerebro deben dividirse repetidamente para ampliar su propio conjunto. S\u00f3lo entonces comienzan a diferenciarse en neuronas, empezando por los tipos de c\u00e9lulas de la capa profunda y avanzando hacia las de la capa superior del cerebro en un orden cuidadosamente sincronizado.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">En el s\u00edndrome de Down, esa secuencia parece romperse, seg\u00fan han visto los investigadores. Las c\u00e9lulas progenitoras se precipitan prematuramente a la producci\u00f3n de neuronas, agotando su propio conjunto y alterando el equilibrio de los tipos de neuronas generadas.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Esa precipitaci\u00f3n provoca un<strong>\u00a0aumento de las neuronas intratelencef\u00e1licas\u00a0<\/strong>de la capa superior del cerebro y una reducci\u00f3n de las neuronas corticotal\u00e1micas de la capa profunda, lo que en un futuro se traducir\u00e1 en dificultades cognitivas, de aprendizaje y procesamiento sensorial.<\/span><\/p>\n<h2 class=\"wp-block-heading\" style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">El descubrimiento ofrece tambi\u00e9n una nueva respuesta a por qu\u00e9 l<strong>as personas con s\u00edndrome de Down tienden a tener cerebros m\u00e1s peque\u00f1os<\/strong>: por el agotamiento prematuro del conjunto de c\u00e9lulas progenitoras.<\/span><\/h2>\n<h2 class=\"wp-block-heading\" style=\"text-align: justify;\"><span style=\"font-size: 14pt;\"><strong>Implicaciones<\/strong><\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Los autores analizaron espec\u00edficamente la superposici\u00f3n entre las alteraciones moleculares que identificaron y las firmas de riesgo gen\u00e9tico asociadas a otras afecciones neurol\u00f3gicas como el autismo, la epilepsia y el retraso en el desarrollo, encontrando \"una convergencia sustancial\".<\/span><\/p>\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><span style=\"font-size: 14pt;\">\"El s\u00edndrome de Down podr\u00eda ser un modelo para comprender la biolog\u00eda com\u00fan que subyace a estas afecciones, ya que los mecanismos a menudo siguen siendo desconocidos\", apunta el investigador ecuatoriano.<\/span><\/p>\n<\/blockquote>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Esta misma edici\u00f3n de Science recoge otro art\u00edculo en el que investigadores de la<strong>\u00a0Universidad estadounidense de Wisconsin-Madison\u00a0<\/strong>examinan el cerebro posnatal de personas con s\u00edndrome de Down entre los 1 y 5 a\u00f1os de edad.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Cuando los dos grupos cient\u00edficos compartieron sus hallazgos descubrieron grandes paralelismos: muchos de los cambios identificados prenatalmente parecen persistir en la primera infancia.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">En conjunto, los dos art\u00edculos ofrecen una<strong>\u00a0visi\u00f3n molecular continua del desarrollo cerebral en el s\u00edndrome de Down<\/strong>\u00a0desde la mitad del embarazo hasta la primera infancia que ser\u00e1 referencia para la ciencia en los pr\u00f3ximos a\u00f1os.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: 14pt;\">Aunque los hallazgos no apuntan a una aplicaci\u00f3n 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Un equipo de investigadores dirigidos por el ecuatoriano,\u00a0Luis De la Torre-Ubieta, de la\u00a0Universidad de California-Los \u00c1ngeles (UCLA),\u00a0ha analizado 100.000 n\u00facleos de [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":212062,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Describen c\u00f3mo el s\u00edndrome de Down altera el desarrollo del cerebro antes de nacer | El Nuevo Norte<\/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:\/\/infoelnuevonorte.com\/?p=212059\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Describen c\u00f3mo el s\u00edndrome de Down altera el desarrollo del cerebro antes de nacer | El Nuevo Norte\" \/>\n<meta property=\"og:description\" content=\"El\u00a0s\u00edndrome de Down\u00a0altera el\u00a0desarrollo del cerebro humano\u00a0antes del nacimiento y ahora un equipo de investigadores ha creado un mapa molecular que explica c\u00f3mo, lo que podr\u00eda servir para desarrollar estrategias terap\u00e9uticas en el futuro. 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