{"id":143092,"date":"2026-04-21T23:27:58","date_gmt":"2026-04-21T23:27:58","guid":{"rendered":"http:\/\/69e7f76480d02237959d3c59"},"modified":"2026-04-21T23:27:58","modified_gmt":"2026-04-21T23:27:58","slug":"un-aerosol-nasal-podria-revertir-el-deterioro-cognitivo-asociado-a-la-edad","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=143092","title":{"rendered":"Un aerosol nasal podr\u00eda revertir el deterioro cognitivo asociado a la edad"},"content":{"rendered":"<p>Un aerosol nasal podr\u00eda convertirse en una soluci\u00f3n prometedora para reducir la inflamaci\u00f3n cerebral y revertir la p\u00e9rdida de memoria asociada al envejecimiento. Una nueva investigaci\u00f3n, desarrollada por cient\u00edficos de la Universidad de Texas A&amp;M, sugiere que la inflamaci\u00f3n responsable del deterioro cognitivo y la confusi\u00f3n mental podr\u00eda ser reversible mediante un m\u00e9todo no invasivo, lo que abre nuevas rutas para abordar trastornos neurodegenerativos como el Alzheimer.<\/p>\n<p>El estudio, dirigido por Ashok Shetty, director asociado del Instituto de Medicina Regenerativa de Texas A&amp;M, se centr\u00f3 en el tratamiento de la neuroinflamaci\u00f3n vinculada con la edad. Este proceso, de progresi\u00f3n lenta, ocurre en el hipocampo y se asocia con focos persistentes de estr\u00e9s cr\u00f3nico en el <a href=\"https:\/\/es.wired.com\/articulos\/esta-ia-promete-saber-cuanto-ha-envejecido-tu-cerebro-y-predecir-si-tendras-demencia\">cerebro envejecido<\/a>, los cuales interfieren con diversas funciones cognitivas como el pensamiento, la formaci\u00f3n de recuerdos y la adaptaci\u00f3n a nuevos entornos. De acuerdo con los especialistas, <strong>este fen\u00f3meno tambi\u00e9n incrementa el riesgo de desarrollar demencias.<\/strong><\/p>\n<hr>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"17.58883248731\">\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=\"Alzheimer 2174665366\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/681271a9ace1441346800d81\/master\/w_120,c_limit\/Alzheimer%202174665366.jpg 120w, https:\/\/media.es.wired.com\/photos\/681271a9ace1441346800d81\/master\/w_240,c_limit\/Alzheimer%202174665366.jpg 240w, https:\/\/media.es.wired.com\/photos\/681271a9ace1441346800d81\/master\/w_320,c_limit\/Alzheimer%202174665366.jpg 320w, https:\/\/media.es.wired.com\/photos\/681271a9ace1441346800d81\/master\/w_640,c_limit\/Alzheimer%202174665366.jpg 640w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/681271a9ace1441346800d81\/master\/w_775%2Cc_limit\/Alzheimer%25202174665366.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"18.426395939086\">\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\/cientificos-usan-tejido-cerebral-humano-vivo-para-estudiar-el-alzheimer-en-tiempo-real\" data-testid=\"ContentCardEmbedHedLink\">Cient\u00edficos usan tejido cerebral humano vivo para estudiar el Alzheimer en tiempo real<\/a><\/div>\n<p>El Alzheimer es la forma m\u00e1s com\u00fan de demencia: representa siete de cada diez diagn\u00f3sticos a nivel mundial.<\/p>\n<\/div>\n<\/div>\n<hr>\n<p>Shetty y su equipo desarrollaron un aerosol capaz de revertir la neuroinflamaci\u00f3n relacionada con el envejecimiento en modelos murinos. El producto fue dise\u00f1ado a partir de millones de part\u00edculas microsc\u00f3picas conocidas como ves\u00edculas extracelulares (VE), que funcionan como veh\u00edculos para transportar una carga gen\u00e9tica denominada microARN.<\/p>\n<p>Madhu Leelavathi Narayana, neurocient\u00edfico y coautor del estudio, <a data-offer-url=\"https:\/\/stories.tamu.edu\/news\/2026\/04\/14\/scientists-reverse-brain-aging-with-a-nasal-spray\/\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/stories.tamu.edu\/news\/2026\/04\/14\/scientists-reverse-brain-aging-with-a-nasal-spray\/&quot;}\" href=\"https:\/\/stories.tamu.edu\/news\/2026\/04\/14\/scientists-reverse-brain-aging-with-a-nasal-spray\/\" rel=\"nofollow noopener\" target=\"_blank\">explica<\/a> que estos microARN, derivados de c\u00e9lulas madre humanas con capacidad de diferenciarse en distintos tipos celulares, contienen diversas prote\u00ednas y act\u00faan como reguladores gen\u00e9ticos. Su funci\u00f3n principal es modular los mecanismos de se\u00f1alizaci\u00f3n cerebral, desactivando o atenuando las se\u00f1ales de alerta que desencadenan el proceso inflamatorio asociado al envejecimiento.<\/p>\n<p>Los investigadores lograron encapsular las ves\u00edculas en un f\u00e1rmaco de administraci\u00f3n intranasal que permite sortear las barreras naturales de protecci\u00f3n del cerebro y facilitar su absorci\u00f3n directa por el tejido cerebral. Una vez dentro, estas part\u00edculas intervienen en sistemas de defensa como el inflamasoma NLRP3 y las v\u00edas de se\u00f1alizaci\u00f3n cGAS-STING, ambos implicados en la inflamaci\u00f3n cr\u00f3nica que deteriora el tejido cerebral con el paso del tiempo.<\/p>\n<p>\u201cLa v\u00eda de administraci\u00f3n es uno de los aspectos m\u00e1s interesantes de nuestro enfoque. <strong>La aplicaci\u00f3n intranasal nos permite alcanzar el cerebro y tratarlo directamente sin recurrir a procedimientos invasivos<\/strong>\u201d, se\u00f1al\u00f3 el doctor Maheedhar Kodali, tambi\u00e9n participante en la investigaci\u00f3n.<\/p>\n<p>Adem\u00e1s, la terapia mostr\u00f3 efectos directos sobre el funcionamiento energ\u00e9tico de las neuronas. A nivel celular, los cient\u00edficos observaron una \u201creactivaci\u00f3n\u201d de las mitocondrias, las estructuras encargadas de generar energ\u00eda dentro de las c\u00e9lulas. Con la edad, estas tienden a perder eficiencia, lo que limita la capacidad neuronal para sostener sus funciones normales.<\/p>\n<p>Al mejorar el rendimiento de estas centrales energ\u00e9ticas, las neuronas recuperan parte de su actividad. Esto no solo contribuye a disminuir el deterioro cognitivo, sino que tambi\u00e9n se traduce en una mejora perceptible en la forma en que el cerebro procesa y almacena informaci\u00f3n. \u201cEstamos devolviendo vitalidad a las neuronas al reducir el estr\u00e9s oxidativo y reactivar las mitocondrias cerebrales\u201d, explic\u00f3 Narayana.<\/p>\n<h2>Un aerosol y la esperanza de un envejecimiento m\u00e1s sano<\/h2>\n<p>Todos estos efectos fueron observados en un modelo murino con ejemplares de 18 meses de edad, equivalente aproximadamente a humanos de entre 50 y 60 a\u00f1os. A los ratones, tanto machos como hembras, se les administraron dos dosis intranasales del aerosol con un intervalo de dos semanas entre cada aplicaci\u00f3n.<\/p>\n<p>Tras el tratamiento, los investigadores detectaron mejoras significativas en tareas relacionadas con el reconocimiento de objetos, la identificaci\u00f3n de nuevos est\u00edmulos contextuales y la memoria espacial. Posteriormente, un an\u00e1lisis bioqu\u00edmico del hipocampo indic\u00f3 que el tratamiento logr\u00f3 reducir los marcadores de inflamaci\u00f3n cerebral. <strong>Estos resultados fueron consistentes en ambos sexos y se mantuvieron durante varios meses<\/strong>, seg\u00fan reportaron los autores en un art\u00edculo publicado en la <a href=\"https:\/\/doi.org\/10.1002\/jev2.70232\">revista <em>Journal of Extracellular Vesicles<\/em><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un aerosol nasal podr\u00eda convertirse en una&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":143093,"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-143092","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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