
{"id":5397,"date":"2010-11-12T14:05:29","date_gmt":"2010-11-12T14:05:29","guid":{"rendered":"http:\/\/ibecbarcelona.eu\/new\/vencer-a-los-bloqueantes-de-la-regeneracion\/"},"modified":"2015-01-15T15:31:01","modified_gmt":"2015-01-15T15:31:01","slug":"vencer-a-los-bloqueantes-de-la-regeneracion","status":"publish","type":"post","link":"https:\/\/ibecbarcelona.eu\/es\/vencer-a-los-bloqueantes-de-la-regeneracion\/","title":{"rendered":"Vencer a los bloqueantes de la regeneraci\u00f3n"},"content":{"rendered":"<p>Ahora, investigadores del IBEC han descubierto un nuevo grupo de ligandos para receptores relacionados con la mielina, que podr\u00edan aclarar la trascendencia de la producci\u00f3n desequilibrada de esta sustancia o sus modificaciones.<\/p>\n<p>En un estudio publicado online por la revista FASEB esta semana, el director del grupo Jos\u00e9 Antonio del R\u00edo, junto con sus postdocs Vanessa Gil y Franc Llorens, han estado estudiando los axones, ligandos y receptores del sistema nervioso central de los mam\u00edferos. En adultos, la capacidad para volver a crecer de los axones tras una lesi\u00f3n es limitada; esta restricci\u00f3n la causan los inhibidores asociados a la mielina (MAIs).<\/p>\n<p>Al evitar la inhibici\u00f3n de la mielina la regeneraci\u00f3n neuronal mejora, y los tres investigadores del grupo de Neurobiotecnolog\u00eda Molecular y Celular han descubierto que al bloquear dos de algunos de los receptores compartidos por estas prote\u00ednas \u2013 NgR1, junto con sus coreceptores p75(NTR), TROY y Lingo-1, y el correspondiente receptor B semejante a la inmunoglobulina (PirB) \u2013 impide a los inhibidores restringir los brotes axonales y limitar la regeneraci\u00f3n de tramos de fibras da\u00f1adas.<\/p>\n<p>Otros elementos de la ruta inhibidora de la mielina siguen siendo desconocidos, pero esta identificaci\u00f3n y caracterizaci\u00f3n de los roles y funciones de algunas de las mol\u00e9culas inhibidoras es un avance dentro de una de las \u00e1reas de investigaci\u00f3n en neuroregeneraci\u00f3n m\u00e1s competitiva de los \u00faltimos a\u00f1os. Adem\u00e1s, otros datos tanto del CNS como externos sugieren que la mayor\u00eda de estas prote\u00ednas tienen otras funciones a parte de la inhibici\u00f3n del crecimiento axonal. \u201cPuede que tengan otras funciones fisiol\u00f3gicas en otros procesos como el desarrollo, la homeostasis neuronal, la plasticidad y la neurodegeneraci\u00f3n\u201d, dice Jos\u00e9 Antonio. \u201cLas modificaciones se podr\u00edan considerar marcadores de ciertas enfermedades neuronales\u201d.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<h3>Investigadores identifican mol\u00e9culas inhibidoras de la neuroregeneraci\u00f3n  <\/h3>\n<p>Se sabe que el desarrollo de enfermedades neuronales como la esclerosis m\u00faltiple y la enfermedad de Alzheimer est\u00e1 relacionado con los niveles de mielina \u2013una sustancia aislante que rodea las fibras nerviosas \u2013 del cuerpo, aunque las verdaderas causas de estas afecciones siguen siendo desconocidas. <\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[97],"tags":[],"post_formats":[],"class_list":["post-5397","post","type-post","status-publish","format-standard","hentry","category-noticias-de-investigacion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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