{"id":2152,"date":"2023-12-31T00:18:53","date_gmt":"2023-12-31T03:18:53","guid":{"rendered":"https:\/\/elreportivo.cl\/olimpia\/?p=2152"},"modified":"2023-12-31T00:18:54","modified_gmt":"2023-12-31T03:18:54","slug":"2152","status":"publish","type":"post","link":"https:\/\/elreportivo.cl\/olimpia\/2023\/12\/31\/2152\/","title":{"rendered":""},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\" style=\"padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px;min-height:635px;aspect-ratio:unset;\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-80 has-background-dim\"><\/span><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-168\" alt=\"\" src=\"https:\/\/elreportivodeolimpia.cl\/wp-content\/uploads\/2022\/08\/sports-tools.jpg\" data-object-fit=\"cover\"\/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<div class=\"wp-block-media-text alignfull is-stacked-on-mobile is-vertically-aligned-center\"><figure class=\"wp-block-media-text__media\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4-1024x576.jpg\" alt=\"\" class=\"wp-image-2153 size-full\" srcset=\"https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4-1024x576.jpg 1024w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4-300x169.jpg 300w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4-768x432.jpg 768w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4-1536x864.jpg 1536w, https:\/\/elreportivo.cl\/olimpia\/wp-content\/uploads\/2023\/12\/08-SERA-VERDAD-4.jpg 1920w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n\n\n<p class=\"wp-block-paragraph\">\u00a0 <strong>Tel\u00f3meros<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00a0\u00a0 Estructuras especiales ubicadas en el extremo de los cromosomas (Telos=lo \u00faltimo), descubiertas a finales de los a\u00f1os 30 por el premio Nobel Hermann Muller, quien propuso que su funci\u00f3n es &#8220;sellar&#8221; esos extremos. Los tel\u00f3meros est\u00e1n compuestos de miles de fragmentos repetidos e id\u00e9nticos de ADN firmemente unidos. En todos los mam\u00edferos, incluyendo al ser humano, este fragmento repetido consta de seis letras, TTAGGG. (T= timina; A= adenina; G= guanina). Los tel\u00f3meros act\u00faan de manera muy parecida a los herretes (las peque\u00f1as fundas de metal o pl\u00e1stico que protegen los cordones de los zapatos para que no se deshilachen), y ayudan a los mecanismos de reparaci\u00f3n celular del ADN para distinguir los cromosomas rotos de los verdaderos extremos. A medida que las c\u00e9lulas se dividen, los tel\u00f3meros se van acortando progresivamente activando, al parecer, como un mecanismo para medir la edad celular. Esto podr\u00eda explicar una caracter\u00edstica de los c\u00e1nceres: la activaci\u00f3n de la telomerasa. Se postula que el envejecimiento celular estar\u00eda condicionado por una p\u00e9rdida progresiva de los tel\u00f3meros, y la posibilidad de controlar este reloj telom\u00e9rico abre el camino para nuevos tratamientos de las patolog\u00edas ligadas a la edad avanzada. El tema de los tel\u00f3meros gan\u00f3 actualidad en 2009, cuando el Premio Nobel de Medicina y Fisiolog\u00eda fue otorgado a las doctoras Elizabeth H. Blackburn y Carol W. Greider, y al doctor Jack W. Szostak por ser los descubridores del papel protector de los tel\u00f3meros y de la enzima telomerasa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fuente: Diccionario Cient\u00edfico \u2013 Sergio Prenafeta J.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp; <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;&nbsp; <\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"has-text-align-right wp-block-post-date has-text-color has-ast-global-color-5-color has-background has-vivid-red-background-color has-medium-font-size\"><time datetime=\"2023-12-31T00:18:53-03:00\">31\/Dic\/2023<\/time><\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":2153,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"plain-container","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","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 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