{"id":423394,"date":"2026-09-10T17:56:52","date_gmt":"2026-09-10T17:56:52","guid":{"rendered":"http:\/\/6aa21c64756120fc46868d19"},"modified":"2026-09-10T17:56:52","modified_gmt":"2026-09-10T17:56:52","slug":"el-spray-nasal-contra-el-alzheimer-es-cada-vez-mas-prometedor","status":"publish","type":"post","link":"https:\/\/sarmiento24h.com\/?p=423394","title":{"rendered":"El spray nasal contra el Alzheimer es cada vez m\u00e1s prometedor"},"content":{"rendered":"<p>Cient\u00edficos probaron la efectividad de un tratamiento administrado por la nariz para combatir algunos de los procesos asociados con la enfermedad de Alzheimer. Este spray nasal emplea part\u00edculas microsc\u00f3picas capaces de transportar mol\u00e9culas hasta el cerebro y modificar la actividad de c\u00e9lulas involucradas en la inflamaci\u00f3n y la conservaci\u00f3n de las conexiones neuronales.<\/p>\n<p>De acuerdo con el estudio publicado en <a data-offer-url=\"https:\/\/link.springer.com\/article\/10.1186\/s40035-026-00581-1\" class=\"external-link\" data-event-click=\"{&quot;element&quot;:&quot;ExternalLink&quot;,&quot;outgoingURL&quot;:&quot;https:\/\/link.springer.com\/article\/10.1186\/s40035-026-00581-1&quot;}\" href=\"https:\/\/link.springer.com\/article\/10.1186\/s40035-026-00581-1\" rel=\"nofollow noopener\" target=\"_blank\"><em>Translational Neurodegeneration<\/em><\/a>, la estrategia mejor\u00f3 distintas medidas de memoria y redujo la acumulaci\u00f3n de prote\u00ednas beta-amiloide, vinculadas con el desarrollo de Alzheimer, en un modelo de rat\u00f3n predispuesto a desarrollar caracter\u00edsticas de la enfermedad neurodegenerativa.<\/p>\n<p>El tratamiento est\u00e1 compuesto por ves\u00edculas extracelulares. Estas son estructuras muy peque\u00f1as que las propias c\u00e9lulas producen y liberan como parte de sus mecanismos de comunicaci\u00f3n. Funcionan, en otras palabras, como paquetes que trasladan prote\u00ednas o mol\u00e9culas de ARN de una c\u00e9lula a otra.<\/p>\n<p>En el experimento, los investigadores suspendieron alrededor de 100 millones de ves\u00edculas en cuatro microlitros de soluci\u00f3n por cada aplicaci\u00f3n y las administraron directamente en las fosas nasales de los ratones. Los cient\u00edficos comprobaron que las ves\u00edculas administradas por esta v\u00eda pod\u00edan llegar a distintas regiones del hipocampo, una regi\u00f3n del cerebro fundamental para la memoria y vulnerable durante el <a href=\"https:\/\/es.wired.com\/articulos\/el-proximo-gran-avance-contra-el-alzheimer-requerira-algo-mas-que-ciencia\">desarrollo del Alzheimer<\/a>. Adem\u00e1s, observaron su incorporaci\u00f3n en neuronas y en la microgl\u00eda, las c\u00e9lulas inmunitarias que vigilan el tejido cerebral.<\/p>\n<p>El reporte indica que las ves\u00edculas suministradas parecen modificar la respuesta inflamatoria del cerebro. En el Alzheimer, la microgl\u00eda puede permanecer en estados de activaci\u00f3n que alimentan una inflamaci\u00f3n continua y terminan afectando el funcionamiento de las neuronas y sus conexiones.<\/p>\n<hr>\n<div class=\"ContentCardEmbedWrapper-hkvhYu kMYDit content-card-embed content-card-embed--stacked\" data-testid=\"ContentCardEmbedWrapper\" readability=\"19.772727272727\">\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=\"Concepto sobre c\u00f3mo las c\u00e9lulas inmunitarias del cerebro se agrupan alrededor de las placas beta amiloides, relacionadas con la enfermedad de Alzheimer.\" loading=\"lazy\" class=\"ResponsiveImageContainer-dkeESL cQPiWi responsive-image__image\" srcset=\"https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_120,c_limit\/GettyImages-1155014615.jpg 120w, https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_240,c_limit\/GettyImages-1155014615.jpg 240w, https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_320,c_limit\/GettyImages-1155014615.jpg 320w, https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_640,c_limit\/GettyImages-1155014615.jpg 640w, https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_768,c_limit\/GettyImages-1155014615.jpg 768w\" sizes=\"100vw\" src=\"https:\/\/media.es.wired.com\/photos\/6a35a69fa765e73a136eaf1b\/master\/w_775%2Cc_limit\/GettyImages-1155014615.jpg\"><\/picture><\/span><\/div>\n<div class=\"ContentCardEmbedInfo-buyHWH gWLOee\" readability=\"20.714285714286\">\n<div class=\"BaseText-fEwdHD ContentCardEmbedHed-kDKGDs iUENtL dlHXUJ content-card-embed__hed\" data-testid=\"ContentCardEmbedHed\"><a class=\"BaseLink-haTOKm ContentCardEmbedHedLink-iBZsco ILkR hhUFQU content-card-embed__hed-link link\" href=\"https:\/\/es.wired.com\/articulos\/una-molecula-podria-reactivar-las-defensas-naturales-del-cerebro-contra-el-alzheimer\" data-testid=\"ContentCardEmbedHedLink\">Una mol\u00e9cula podr\u00eda reactivar las defensas naturales del cerebro contra el Alzheimer<\/a><\/div>\n<p>Las c\u00e9lulas inmunitarias del cerebro pierden efectividad con la edad. Este compuesto las reactiva para que vayan tras las placas beta-amiloides.<\/p>\n<\/div>\n<\/div>\n<hr>\n<p>En los ratones tratados con el spray, los investigadores encontraron una menor presencia de microgl\u00eda reactiva y se\u00f1ales de una mejor conservaci\u00f3n de las conexiones neuronales. Tambi\u00e9n hallaron rastros de menor inflamaci\u00f3n en el <a href=\"https:\/\/es.wired.com\/articulos\/las-primeras-senales-del-deterioro-de-la-memoria-aparecen-antes-de-lo-que-crees\">hipocampo<\/a> y un aumento de prote\u00ednas relacionadas con la plasticidad neuronal, la capacidad del cerebro para modificar y reorganizar sus conexiones. Al mismo tiempo, registraron una disminuci\u00f3n en los niveles de la prote\u00edna beta-amiloide. Sin embargo, el tratamiento no produjo cambios significativos en la fosforilaci\u00f3n de tau, otra prote\u00edna estrechamente relacionada con el desarrollo del Alzheimer.<\/p>\n<p>Parte del efecto parece depender de lo que estas ves\u00edculas transportan. En su interior llevan sustancias capaces de modificar la actividad de otras c\u00e9lulas, incluidas algunas relacionadas con el control de las respuestas inflamatorias. Los investigadores plantean que, al llegar al cerebro, esa carga contribuye a modificar el comportamiento de la microgl\u00eda y a reducir algunas de las condiciones que pueden perjudicar a las <a href=\"https:\/\/es.wired.com\/articulos\/asi-programan-neuronas-humanas-en-la-primera-biocomputadora-de-europa\">neuronas<\/a> durante el Alzheimer.<\/p>\n<p>Los investigadores obtuvieron las ves\u00edculas de c\u00e9lulas de la membrana amni\u00f3tica humana, uno de los tejidos asociados con la placenta. Los cient\u00edficos estudian estas c\u00e9lulas, entre otras razones, por su capacidad para modular respuestas inmunitarias. Para producir las ves\u00edculas del experimento, cultivaron las c\u00e9lulas y posteriormente recuperaron las part\u00edculas que estas liberaron al medio.<\/p>\n<p>\u201cEl estudio sugiere la necesidad de dirigir la investigaci\u00f3n sobre las terapias de Alzheimer centr\u00e1ndose no solo en contrarrestar la acumulaci\u00f3n de compuestos t\u00f3xicos como el beta-amiloide y el tau, sino tambi\u00e9n prestando mucha atenci\u00f3n al entorno celular en el que viven las neuronas, por ejemplo, microgl\u00eda y astrocitos, y las se\u00f1ales moleculares intercambiadas por estas c\u00e9lulas, que pueden influir en la funci\u00f3n de las sinapsis\u201d, dijo Salvatore Fusco, uno de los autores del estudio, en un comunicado.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cient\u00edficos probaron la efectividad de un tratamiento&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":423395,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"categories":[46],"tags":[],"class_list":["post-423394","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tecnologia"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - 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