{"id":22831,"date":"2026-04-21T12:31:15","date_gmt":"2026-04-21T15:31:15","guid":{"rendered":"https:\/\/vriic.usach.cl\/?p=22831"},"modified":"2026-04-21T12:37:20","modified_gmt":"2026-04-21T15:37:20","slug":"investigacion-usach-genera-hallazgo-que-abre-nuevas-claves-para-comprender-mejor-el-parkinson","status":"publish","type":"post","link":"https:\/\/vriic.usach.cl\/index.php\/investigacion-usach-genera-hallazgo-que-abre-nuevas-claves-para-comprender-mejor-el-parkinson\/","title":{"rendered":"Investigaci\u00f3n Usach genera hallazgo que abre nuevas claves para comprender mejor el Parkinson"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"22831\" class=\"elementor elementor-22831\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6252c000 elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no\" data-id=\"6252c000\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-67bbe9b5\" data-id=\"67bbe9b5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-14556801 elementor-section-boxed elementor-section-height-default elementor-section-height-default wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no\" data-id=\"14556801\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-42b49c37\" data-id=\"42b49c37\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35f0020 elementor-share-buttons--view-icon elementor-share-buttons--shape-circle elementor-share-buttons--skin-gradient elementor-grid-0 elementor-share-buttons--color-official elementor-widget elementor-widget-share-buttons\" data-id=\"35f0020\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"share-buttons.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-grid\" role=\"list\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_facebook\" role=\"button\" tabindex=\"0\" aria-label=\"Share on facebook\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-facebook\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_twitter\" role=\"button\" tabindex=\"0\" aria-label=\"Share on twitter\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-twitter\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\" role=\"listitem\">\n\t\t\t\t\t\t<div class=\"elementor-share-btn elementor-share-btn_linkedin\" role=\"button\" tabindex=\"0\" aria-label=\"Share on linkedin\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<i class=\"fab fa-linkedin\" aria-hidden=\"true\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3a182531 elementor-widget elementor-widget-text-editor\" data-id=\"3a182531\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span id=\"docs-internal-guid-1dd3a539-7fff-6f04-780c-095913222e85\" style=\"font-weight: normal;\"><span style=\"font-size: 12pt; background-color: transparent; font-weight: bold; font-variant: normal; vertical-align: baseline; white-space: pre-wrap;\">Francisco Leiva, estudiante del Doctorado en Biotecnolog\u00eda de la Usach public\u00f3 estudio para entender la arquitectura y el rol de la regulaci\u00f3n transcripcional de la enfermedad del Parkinson en pacientes Latinoamericanos. La investigaci\u00f3n, revela nuevos antecedentes de la enfermedad desde la biolog\u00eda molecular y epitranscript\u00f3mica. <\/span><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-25f01e0b elementor-widget elementor-widget-text-editor\" data-id=\"25f01e0b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"field field-name-post-date field-type-ds field-label-hidden\"><div class=\"field-items\"><div class=\"field-item even\"><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">La enfermedad del Parkinson es un trastorno neurodegenerativo que afecta principalmente el movimiento, causando problemas de sue\u00f1o, dolor y dificultades para caminar o hablar. Suele avanzar lentamente y ocurre al da\u00f1arse las neuronas que producen dopamina, un neurotransmisor clave para el control rotor.<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">A nivel mundial, el Parkinson se considera una de las grandes enfermedades neurodegenerativas. En los \u00faltimos 25 a\u00f1os, su prevalencia se ha duplicado, actualmente en el mundo existen m\u00e1s de 8.5 millones de casos registrados.\u00a0<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">En Chile, se estima que alrededor de 30 mil personas viven con esta enfermedad, lo que la convierte en un problema de salud relevante tambi\u00e9n a nivel local.<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Francisco Leiva, estudiante del Doctorado en Biotecnolog\u00eda de la Universidad de\u00a0<\/span><span style=\"font-style: inherit;\">Santiago y candidato a Doctor, es uno de los investigadores que enfoc\u00f3 su labor\u00a0<\/span><span style=\"font-style: inherit;\">investigativa en el Laboratorio de Gen\u00f3mica, Ecolog\u00eda Molecular y Estudios\u00a0<\/span><span style=\"font-style: inherit;\">Evolutivos, en las modificaciones de ARN denominadas epitranscript\u00f3mica y su rol\u00a0<\/span><span style=\"font-style: inherit;\">en las causas y s\u00edntomas que podr\u00edan llevar a una detecci\u00f3n de la enfermedad del\u00a0<\/span><span style=\"font-style: inherit;\">Parkinson m\u00e1s temprana, y as\u00ed, poder prevenirla o incluso, curarla.<\/span><\/p><p style=\"text-align: center;\"><b>La sangre como ventana de estudio<\/b><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Muchos estudios sobre el Parkinson se han centrado en el cerebro, debido a que es el \u00f3rgano que afecta principalmente la enfermedad. Francisco Leiva y su equipo apostaron por la sangre como una alternativa menos invasiva y m\u00e1s viable para estudiar a pacientes, sobre todo si se compara con muestras de l\u00edquido cefalorraqu\u00eddeo, cuya obtenci\u00f3n es m\u00e1s compleja.\u00a0<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">\u201c<i>La decisi\u00f3n se sustenta en la evidencia de una posible relaci\u00f3n entre los cambios en la sangre y procesos que ocurren en el sistema nervioso, en parte porque en pacientes con Parkinson se ha descrito alteraci\u00f3n de la barrera hematoencef\u00e1lica\u201d<\/i>, explic\u00f3 Francisco Leiva.<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Partiendo de una base internacional de m\u00e1s de 10.000 pacientes latinoamericanos, conseguida con la ayuda de la Agencia Internacional Norteamericana de Salud, la Fundaci\u00f3n Michael J. Fox y Parkinson Biomarkers, se realiz\u00f3 un estudio epitranscript\u00f3mico, que arroj\u00f3 237 genes que se diferenciaban entre pacientes y controles, despu\u00e9s de analizarlos se lleg\u00f3 a 12 genes claves que se relacionaban con la enfermedad.<\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">Francisco Leiva, destaca: <i>\u201cla relevancia de estos genes est\u00e1 en que presentan metilaci\u00f3n de ARN, una modificaci\u00f3n qu\u00edmica que puede cambiar la forma en que la c\u00e9lula lee y usa un mensaje gen\u00e9tico. Tras revisar bases de datos especializadas, confirmamos que los 12 genes mostraban alteraci\u00f3n en esta marca, lo que refuerza su posible v\u00ednculo con el Parkinson.\u201d<\/i><\/span><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">En otras palabras, la presencia de esta marca qu\u00edmica en el ARN sugiere que el modo en que la c\u00e9lula regula estos genes podr\u00eda estar alterado en pacientes con Parkinson. Lo que abre un nuevo camino para entender la enfermedad y qu\u00e9 mecanismo podr\u00eda estar participando en sus etapas tempranas.<\/span><\/p><p style=\"text-align: center;\"><b>\u00bfQu\u00e9 implica para la investigaci\u00f3n del Parkinson?<\/b><\/p><p style=\"text-align: left;\"><span style=\"font-weight: 400;\">El objetivo final de la investigaci\u00f3n de cualquier enfermedad es encontrar una cura, una forma de resolverla y llegar a que menos personas en el mundo tengan que sufrir sus s\u00edntomas, para Francisco Leiva eso est\u00e1 muy claro, donde comenta que sus hallazgos son solo el comienzo de algo mucho m\u00e1s profundo, que necesita mucha investigaci\u00f3n y trabajo.<\/span><\/p><p><span style=\"font-weight: 400;\">\u201c<i>Yo veo, tanto en el paper como en la tesis, que la epitranscript\u00f3mica, es decir, el conjunto de modificaciones qu\u00edmicas que regulan el ARN sin cambiar la secuencia gen\u00e9tica, no s\u00f3lo est\u00e1 involucrada, sino que probablemente sea una pieza fundamental del proceso. Incluso, modular estos mecanismos podr\u00eda ayudar a retrasar la enfermedad o, en un escenario m\u00e1s lejano, evitarla.\u201d<\/i><\/span><\/p><p><span style=\"font-weight: 400;\">Adem\u00e1s, tiene certeza de que el estudio de los modificaciones del transcriptoma -las marcas que cambian la forma en que el ARN funciona- abre una puerta a un lenguaje completamente desconocido y que por ello, no ha sido investigado. <i>\u201cMi frontera es conseguir curar esta enfermedad o detenerla, ese es mi norte. Desde mi aporte, en este caso, desde la gen\u00f3mica\u201d<\/i>, finaliza Francisco Leiva.<\/span><\/p><p><span style=\"font-weight: 400;\">En el estudio tambi\u00e9n participaron el Laboratorio de Neurobiolog\u00eda, dirigido por el Dr. Luis Constandil; el Laboratorio de Neurociencia, del Dr. Bernardo Morales; profesor de la Facultad de Medicina de la Usach, Dr. Pedro Chana-Cuevas y el Dr. Ren\u00e9 Vidal, de la Universidad Mayor.\u00a0<\/span><\/p><p><span style=\"font-weight: 400;\">Lee el estudio completo aqu\u00ed: https:\/\/www.mdpi.com\/3823916<\/span><\/p><p>\u00a0<\/p><p><span style=\"font-weight: 400;\">Autor: Crist\u00f3bal Vald\u00e9s Mar\u00edn<\/span><\/p><p>Fotograf\u00eda: Comunicaciones Vriic<\/p><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Francisco Leiva, estudiante del Doctorado en Biotecnolog\u00eda de la Usach public\u00f3 estudio para entender la arquitectura y el rol de la regulaci\u00f3n transcripcional de la enfermedad del Parkinson en pacientes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":22832,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","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":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","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":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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