{"id":183461,"date":"2026-05-06T19:47:06","date_gmt":"2026-05-06T19:47:06","guid":{"rendered":"http:\/\/69fb515038f7a801a17bc340"},"modified":"2026-05-06T19:47:06","modified_gmt":"2026-05-06T19:47:06","slug":"por-fin-estamos-entendiendo-a-los-superancianos-y-por-que-su-cerebro-se-niega-a-envejecer","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=183461","title":{"rendered":"Por fin estamos entendiendo a los superancianos y por qu\u00e9 su cerebro se niega a envejecer"},"content":{"rendered":"<p>El deterioro de la memoria relacionado con la edad se ha considerado durante mucho tiempo una realidad inevitable. Los datos que muestran que una persona de 80 a\u00f1os puede recordar solo la mitad de palabras de una lista de vocabulario que alguien de 50 o 60 a\u00f1os respaldan esta idea. Sin embargo, un cuarto de siglo de investigaci\u00f3n realizada por cient\u00edficos estadounidenses ha demostrado que hay personas para quienes esta creencia convencional no se aplica en absoluto.<\/p>\n<p>Desde el a\u00f1o 2000, el Instituto Meslam de Neurolog\u00eda Cognitiva y <a href=\"https:\/\/es.wired.com\/articulos\/el-proximo-gran-avance-contra-el-alzheimer-requerira-algo-mas-que-ciencia\">Enfermedad de Alzheimer<\/a> de la Universidad Northwestern ha estado haciendo un seguimiento de personas conocidas como <em>superancianos<\/em>. Los <em>superancianos<\/em> son personas que, a pesar de tener m\u00e1s de 80 a\u00f1os, demuestran en las pruebas de recordar palabras, una <a href=\"https:\/\/es.wired.com\/articulos\/investigadores-espanoles-ponen-en-duda-la-capacidad-de-razonamiento-de-las-ia-mas-poderosas\">capacidad de memoria<\/a> comparable a la de personas entre 20 y 30 a\u00f1os m\u00e1s j\u00f3venes.<\/p>\n<p>\u00abSab\u00edamos que <a href=\"https:\/\/es.wired.com\/articulos\/y-si-tus-recuerdos-fueran-una-ilusion-el-cerebro-de-boltzmann-la-hipotesis-que-sigue-incomodando-a-la-fisica\">los cerebros<\/a> de las personas con una longevidad excepcional eran biol\u00f3gicamente activos, adaptables y flexibles, pero el motivo segu\u00eda siendo un misterio\u00bb, explica Tamar Geffen, profesora asociada de neuropsicolog\u00eda en la Facultad de Medicina de la Universidad Northwestern.<\/p>\n<p>Hasta la fecha, 290 personas han participado en el programa del Instituto Meslam de Neurolog\u00eda Cognitiva y Enfermedad de Alzheimer, y 133 se encuentran actualmente en seguimiento como participantes activos. <strong>La edad promedio de los 101 participantes registrados como <em>superancianos<\/em> es de 90.1 a\u00f1os, y el mayor alcanz\u00f3 los 111 a\u00f1os.<\/strong> Setenta y siete participantes se sometieron a <a href=\"https:\/\/es.wired.com\/articulos\/vida-moderna-esta-envejeciendo-tu-cerebro\">autopsias cerebrales<\/a> post mortem con su consentimiento, y los an\u00e1lisis detallados de estas autopsias han revelado importantes descubrimientos.<\/p>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"20.8203125\">\n<div class=\"ContentCardEmbedImage-bqahne fjmzkP content-card-embed__image\" data-testid=\"ContentCardEmbedImage\"><span class=\"SpanWrapper-kFnjvc eKnjjD responsive-asset\"><picture class=\"ResponsiveImagePicture-jKunQM gjCCFj responsive-image\"><img decoding=\"async\" alt=\"collage de un reloj y arriba un caf\u00e9. \" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/69cd2a5bc47c42d682206e28\/master\/w_120,c_limit\/The-Ideal-Time-to-Drink-Coffee-for-Productivity-(and-When-to-Stop).jpg 120w, https:\/\/media.es.wired.com\/photos\/69cd2a5bc47c42d682206e28\/master\/w_240,c_limit\/The-Ideal-Time-to-Drink-Coffee-for-Productivity-(and-When-to-Stop).jpg 240w, https:\/\/media.es.wired.com\/photos\/69cd2a5bc47c42d682206e28\/master\/w_320,c_limit\/The-Ideal-Time-to-Drink-Coffee-for-Productivity-(and-When-to-Stop).jpg 320w, https:\/\/media.es.wired.com\/photos\/69cd2a5bc47c42d682206e28\/master\/w_640,c_limit\/The-Ideal-Time-to-Drink-Coffee-for-Productivity-(and-When-to-Stop).jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/69cd2a5bc47c42d682206e28\/master\/w_775%2Cc_limit\/The-Ideal-Time-to-Drink-Coffee-for-Productivity-(and-When-to-Stop).jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"22.421875\">\n<div class=\"BaseText-fEwdHD ContentCardEmbedHed-kDKGDs fUtEc dlHXUJ content-card-embed__hed\" data-testid=\"ContentCardEmbedHed\"><a class=\"BaseLink-haTOKm ContentCardEmbedHedLink-iBZsco gAoKdC hhUFQU content-card-embed__hed-link link\" href=\"https:\/\/es.wired.com\/articulos\/cual-es-el-momento-ideal-del-dia-para-tomar-cafe-y-cuando-parar\" data-testid=\"ContentCardEmbedHedLink\">Cu\u00e1l es el momento ideal del d\u00eda para tomar caf\u00e9 (y cu\u00e1ndo parar)<\/a><\/div>\n<p>La cafe\u00edna es el <em>biohack<\/em> original para obtener energ\u00eda, concentraci\u00f3n y estado de alerta. Pero, \u00bfla est\u00e1s usando bien?<\/p>\n<\/div>\n<\/div>\n<h2>Diferencias que se han hecho evidentes a nivel celular<\/h2>\n<p>El an\u00e1lisis de <a href=\"https:\/\/es.wired.com\/articulos\/la-evolucion-de-las-redes-cerebrales-podria-explicar-por-que-las-mujeres-son-mas-propensas-que-los-hombres-a-padecer-depresion\">im\u00e1genes cerebrales<\/a> revel\u00f3 una estructura cerebral claramente distinta a la del envejecimiento normal. <strong>Generalmente, en las personas mayores de 80 a\u00f1os, la corteza se adelgaza significativamente en comparaci\u00f3n con las personas de 50 y 60 a\u00f1os, pero esta atrofia fue m\u00ednima en los de edad avanzada.<\/strong> Un seguimiento longitudinal de 18 meses tambi\u00e9n revel\u00f3 que la tasa de deterioro cortical fue del 1.06 % en los superagentes de edad avanzada, en comparaci\u00f3n con el 2.24 % en las personas mayores t\u00edpicas.<\/p>\n<p>Fue particularmente interesante una regi\u00f3n cerebral llamada \u00abcorteza cingulada anterior\u00bb. Esta regi\u00f3n est\u00e1 implicada en la motivaci\u00f3n, la emoci\u00f3n y la conexi\u00f3n social. Seg\u00fan los investigadores, una porci\u00f3n de la corteza cingulada anterior en los <em>superancianos<\/em> es m\u00e1s gruesa no solo que la de otros adultos mayores de la misma edad, sino tambi\u00e9n que la de personas de entre 50 y 60 a\u00f1os. Este hallazgo ha sido confirmado repetidamente por m\u00faltiples estudios independientes, lo que lo convierte en un descubrimiento altamente reproducible.<\/p>\n<p>Los ex\u00e1menes patol\u00f3gicos del cerebro revelaron diferencias significativas incluso a nivel celular. La corteza cingulada anterior contiene <a href=\"https:\/\/es.wired.com\/articulos\/japon-aprueba-los-primeros-tratamientos-del-mundo-hechos-con-celulas-humanas-reprogramadas\">c\u00e9lulas nerviosas<\/a> especializadas con forma de huso, llamadas neuronas de von Economo, que se encuentran com\u00fanmente en animales como humanos, simios, ballenas y elefantes. En los <em>superancianos<\/em>, la densidad de estas c\u00e9lulas era mayor no solo en comparaci\u00f3n con sus pares, sino tambi\u00e9n con personas de 50 y 60 a\u00f1os.<\/p>\n<p>Adem\u00e1s, se obtuvieron hallazgos importantes con respecto a la relaci\u00f3n con los ovillos neurofibrilares, un hallazgo patol\u00f3gico caracter\u00edstico del <a href=\"https:\/\/es.wired.com\/articulos\/el-riesgo-de-alzheimer-podria-reducirse-consumiendo-huevo-diariamente-sugiere-un-nuevo-estudio\">Alzheimer.<\/a> La densidad de estas lesiones fue significativamente menor en los cerebros de los <em>superancianos<\/em> en comparaci\u00f3n con la de los ancianos t\u00edpicos. Asimismo, el mayor tama\u00f1o de las neuronas en la corteza entorrinal, que es el punto de entrada a la memoria, sugiere que los circuitos neuronales implicados en la memoria podr\u00edan mantenerse de forma m\u00e1s robusta.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>El deterioro de la memoria relacionado con&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":183462,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[46],"tags":[],"class_list":["post-183461","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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