{"id":2218,"date":"2018-12-13T13:10:44","date_gmt":"2018-12-13T11:10:44","guid":{"rendered":"http:\/\/lupusgalicia.org\/?p=2218"},"modified":"2018-12-13T22:01:30","modified_gmt":"2018-12-13T20:01:30","slug":"descubierto-el-mecanismo-detras-del-aumento-del-riesgo-de-enfermedad-cardiaca-en-pacientes-autoinmunes","status":"publish","type":"post","link":"https:\/\/lupusgalicia.org\/?p=2218","title":{"rendered":"Descubierto el mecanismo detr\u00e1s del aumento del riesgo de enfermedad card\u00edaca en pacientes autoinmunes"},"content":{"rendered":"<p><a href=\"https:\/\/lupusgalicia.org\/wp-content\/uploads\/2018\/12\/shutterstock_525531187-1000x480@2x.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2220 aligncenter\" src=\"https:\/\/lupusgalicia.org\/wp-content\/uploads\/2018\/12\/shutterstock_525531187-1000x480@2x-300x200.jpg\" alt=\"\" width=\"300\" height=\"200\" srcset=\"https:\/\/lupusgalicia.org\/wp-content\/uploads\/2018\/12\/shutterstock_525531187-1000x480@2x-300x200.jpg 300w, https:\/\/lupusgalicia.org\/wp-content\/uploads\/2018\/12\/shutterstock_525531187-1000x480@2x-768x512.jpg 768w, https:\/\/lupusgalicia.org\/wp-content\/uploads\/2018\/12\/shutterstock_525531187-1000x480@2x.jpg 1000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Los pacientes con enfermedades autoinmunes, como la psoriasis, <span style=\"color: #993366;\"><strong>el&nbsp;lupus&nbsp;<\/strong><\/span>y la artritis, tienden a acumular col\u00e1geno, una prote\u00edna del tejido conectivo, en sus vasos sangu\u00edneos, que atrapan el colesterol en las arterias y el tejido card\u00edaco, seg\u00fan encontr\u00f3 un estudio en ratones.<\/p>\n<p>Estos hallazgos comienzan a explicar por qu\u00e9 estos pacientes tienen un riesgo significativamente mayor de enfermedad card\u00edaca y sugieren que el<strong> <span style=\"color: #993366;\">bloqueo de la mol\u00e9cula de&nbsp;interleucina 17&nbsp;(IL-17)<\/span>,<\/strong> el principal impulsor de este mecanismo, <span style=\"color: #993366;\">podr\u00eda reducir la probabilidad de problemas card\u00edacos en estas pacientes.&nbsp;Las pacientes autoinmunes tienen un&nbsp;mayor riesgo de enfermedad card\u00edaca&nbsp;&nbsp;incluso cuando su condici\u00f3n no se dirige directamente al coraz\u00f3n.&nbsp;<span style=\"color: #000000;\">Esto sugiere que existe un mecanismo subyacente que vincula la autoinmunidad con las afecciones card\u00edacas, pero hasta ahora se sab\u00eda poco sobre \u00e9l.<\/span><\/span><\/p>\n<p>El estudio,&nbsp;<em>&nbsp;<span style=\"color: #993366;\">Interleukin-17 Drives Atrapment intersticial de lipoprote\u00ednas tisulares en la psoriasis experimental&nbsp;<\/span><\/em>, se public\u00f3 en&nbsp;Cell Metabolism&nbsp;.<\/p>\n<p>El uso de un modelo de rat\u00f3n para la&nbsp;&nbsp;psoriasis&nbsp;, una enfermedad autoinmune caracterizada por inflamaci\u00f3n de la piel, erupci\u00f3n cut\u00e1nea y engrosamiento de la piel, los investigadores de este estudio ahora han adquirido cierta comprensi\u00f3n de este mecanismo.<\/p>\n<p>Una de las principales&nbsp;causas&nbsp;de la enfermedad card\u00edaca es la&nbsp;aterosclerosis&nbsp;, la acumulaci\u00f3n de colesterol en las arterias.&nbsp;El colesterol se transporta fuera de los \u00f3rganos y al torrente sangu\u00edneo mediante mol\u00e9culas de grasa especiales llamadas lipoprote\u00ednas de alta densidad (HDL).&nbsp;El transporte deteriorado de HDL conduce a la acumulaci\u00f3n de colesterol.<\/p>\n<p>Usando una nueva herramienta capaz de rastrear el tr\u00e1fico de HDL en diferentes tejidos, los investigadores estudiaron la relaci\u00f3n entre la psoriasis y la acumulaci\u00f3n de colesterol.<\/p>\n<p>Encontraron que los ratones enfermos acumulaban HDL en sus tejidos en lugar de enviarlo al torrente sangu\u00edneo.&nbsp;Esto se relacion\u00f3 con un aumento de la producci\u00f3n de col\u00e1geno, una mol\u00e9cula fibrosa que forma una estructura similar a una red y ayuda a mantener las c\u00e9lulas en condiciones normales.&nbsp;Cuando se produce en cantidades m\u00e1s altas, la red atrapa mol\u00e9culas m\u00e1s peque\u00f1as, como HDL.<\/p>\n<p><span style=\"color: #800080;\">\u201c<em>En los ratones con psoriasis, la mayor\u00eda de las part\u00edculas de HDL estaban atrapadas en la piel y se acumulaba col\u00e1geno.<\/em>..&nbsp;<em>El aumento de col\u00e1geno tambi\u00e9n se observ\u00f3 en el coraz\u00f3n y las arterias que conducen a la rigidez vascular\u00bb,<\/em><\/span> dijo la autora principal Dra. Gwendalyn Randolph, profesora de la&nbsp;Escuela de Medicina de la Universidad de Washington&nbsp;en St. Louis, en un&nbsp;comunicado de prensa&nbsp;.<\/p>\n<p>El aumento de la producci\u00f3n de col\u00e1geno fue mediado por la IL-17, una mol\u00e9cula inflamatoria elevada en la psoriasis y el lupus.<\/p>\n<p><em>\u00ab<span style=\"color: #800080;\">La respuesta inmunitaria impulsada por la piel puede provocar cambios sist\u00e9micos<\/span><\/em>\u00ab, dijo la Dra. Randolph.&nbsp;\u00ab<span style=\"color: #800080;\"><em>Una vez que las c\u00e9lulas inmunitarias est\u00e1n programadas por reacciones a la piel inflamada, se mueven alrededor del cuerpo a otros sitios de la piel y las arterias para estar listas para el siguiente ataque, aumentando la densidad del col\u00e1geno donde sea que vayan\u00bb<\/em><\/span>.<\/p>\n<p>Alimentar a los ratones con la condici\u00f3n similar a la psoriasis, una dieta alta en colesterol llev\u00f3 a la formaci\u00f3n de dep\u00f3sitos de colesterol m\u00e1s altos que en los ratones no afectados.&nbsp;Sin embargo, la inhibici\u00f3n de IL-17 restaur\u00f3 el transporte de HDL y redujo la acumulaci\u00f3n de colesterol, la producci\u00f3n de col\u00e1geno y la rigidez celular.<\/p>\n<p><em><span style=\"color: #800080;\">\u00abDurante d\u00e9cadas se ha sabido que la captura del colesterol provoca enfermedades, y ahora tenemos un mecanismo para determinar c\u00f3mo ciertas respuestas inmunitarias t\u00edpicas de las enfermedades autoinmunes podr\u00edan empeorar eso\u00bb<\/span><\/em>, dijo Randolph.&nbsp;\u201c<span style=\"color: #800080;\"><em>En el rat\u00f3n, los signos de la enfermedad cardiovascular apenas aparecieron cuando neutralizamos estos componentes inmunitarios.&nbsp;En las personas, es dif\u00edcil estar seguro, pero predecir\u00edamos que tambi\u00e9n se podr\u00eda prevenir \u00ab<\/em><\/span>.<\/p>\n<h4><span style=\"color: #800080;\"><strong>Estos resultados sugieren que las terapias dirigidas a IL-17 podr\u00edan ayudar a reducir el riesgo de enfermedad card\u00edaca en pacientes autoinmunes.<\/strong><\/span><\/h4>\n<p>Estos&nbsp;tratamientos&nbsp;ya existen y se utilizan para tratar la psoriasis:&nbsp;Cosentyx&nbsp;&nbsp;(secukinumab) y&nbsp;Taltz&nbsp;(ixekizumab).<\/p>\n<p>\u00ab<span style=\"color: #800080;\"><em>Pasar\u00e1n algunos a\u00f1os antes de que lo sepamos con seguridad, pero predecimos que los anticuerpos anti-IL-17 que ya se est\u00e1n usando para tratar enfermedades autoinmunes ser\u00e1n efectivos para reducir el riesgo de enfermedad cardiovascular\u00bb<\/em><\/span>, dijo Randolph.&nbsp;\u00ab<span style=\"color: #800080;\"><em>Esto ser\u00eda importante porque algunos otros medicamentos en el mercado parecen mejorar la enfermedad de la piel pero no reducen el riesgo cardiovascular\u00bb.<\/em><\/span><\/p>\n<pre>Noticia aparecida en <a href=\"https:\/\/lupusnewstoday.com\/2018\/12\/03\/mechanism-behind-autoimmune-disease-heart-disease-found\/\">LupusNewsToday<\/a> por la Dra Alejandra Viviescas . 3.12.18<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Los pacientes con enfermedades autoinmunes, como la psoriasis, el&nbsp;lupus&nbsp;y la artritis, tienden a acumular col\u00e1geno, una prote\u00edna del tejido conectivo, en sus vasos sangu\u00edneos, que atrapan el colesterol en las arterias y el tejido card\u00edaco, seg\u00fan encontr\u00f3 un estudio en ratones. Estos hallazgos comienzan a explicar por qu\u00e9 estos pacientes tienen un riesgo significativamente mayor [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2220,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"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":"","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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[14,6,5,24],"tags":[52,44,42,38,46,16],"class_list":["post-2218","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-estudios","category-investigacion","category-lupus-internacional","category-mujer-lupica","tag-biomedica","tag-estudios","tag-investigacion","tag-mujer-lupica","tag-nuevas-moleculas","tag-tratamientos"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>Descubierto el mecanismo detr\u00e1s del aumento del riesgo de enfermedad card\u00edaca en pacientes autoinmunes - Asociaci\u00f3n Galega de Lupus<\/title>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\r\n<link rel=\"canonical\" href=\"https:\/\/lupusgalicia.org\/?p=2218\" \/>\r\n<meta property=\"og:locale\" content=\"es_ES\" \/>\r\n<meta property=\"og:type\" content=\"article\" \/>\r\n<meta property=\"og:title\" content=\"Descubierto el mecanismo detr\u00e1s del aumento del riesgo de enfermedad card\u00edaca en pacientes autoinmunes - Asociaci\u00f3n Galega de Lupus\" \/>\r\n<meta property=\"og:description\" content=\"Los pacientes con enfermedades autoinmunes, como la psoriasis, el&nbsp;lupus&nbsp;y la artritis, tienden a acumular col\u00e1geno, una prote\u00edna del tejido conectivo, en sus vasos sangu\u00edneos, que atrapan el colesterol en las arterias y el tejido card\u00edaco, seg\u00fan encontr\u00f3 un estudio en ratones. 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