{"id":85901,"date":"2026-02-25T14:57:37","date_gmt":"2026-02-25T18:57:37","guid":{"rendered":"https:\/\/www.mundoacuicola.cl\/new\/?p=85901"},"modified":"2026-02-26T16:38:33","modified_gmt":"2026-02-26T20:38:33","slug":"estudio-analiza-mecanismos-moleculares-detras-de-la-melanosis-muscular-en-salmon-atlantico","status":"publish","type":"post","link":"https:\/\/www.mundoacuicola.cl\/new\/estudio-analiza-mecanismos-moleculares-detras-de-la-melanosis-muscular-en-salmon-atlantico\/","title":{"rendered":"Estudio analiza mecanismos moleculares detr\u00e1s de la melanosis muscular en salm\u00f3n Atl\u00e1ntico"},"content":{"rendered":"<p data-start=\"398\" data-end=\"742\">Un estudio cient\u00edfico chileno abord\u00f3 los mecanismos moleculares asociados a la aparici\u00f3n de focos melanizados en el m\u00fasculo esquel\u00e9tico del salm\u00f3n Atl\u00e1ntico, una condici\u00f3n que representa una creciente preocupaci\u00f3n para la salmonicultura debido a su impacto en la calidad del producto y las p\u00e9rdidas econ\u00f3micas asociadas a la degradaci\u00f3n de los filetes.<\/p>\n<p data-start=\"744\" data-end=\"1114\">La investigaci\u00f3n fue desarrollada por equipos de la Pontificia Universidad Cat\u00f3lica de Chile, la Universidad Andr\u00e9s Bello, la Universidad San Sebasti\u00e1n, la Universidad de Chile, el Centro Interdisciplinario para la Investigaci\u00f3n Acu\u00edcola (INCAR) y el Millennium Institute Center for Genome Regulation, y cont\u00f3 con la participaci\u00f3n de la doctora en Acuicultura <strong data-start=\"1096\" data-end=\"1113\">Liane Bassini<\/strong>.<\/p>\n<p data-start=\"1116\" data-end=\"1600\">Publicado en la revista <em data-start=\"1140\" data-end=\"1153\">Aquaculture<\/em>, el estudio analiz\u00f3 tejido muscular con focos melanizados mediante un enfoque integrado que combin\u00f3 transcript\u00f3mica (RNA-seq), evaluaciones de estr\u00e9s oxidativo, an\u00e1lisis de apoptosis y ensayos funcionales in vitro. Los resultados revelaron una activaci\u00f3n sostenida de rutas asociadas a inflamaci\u00f3n cr\u00f3nica, respuesta inmune, estr\u00e9s oxidativo y muerte celular programada en las zonas afectadas, en comparaci\u00f3n con tejido muscular sin melanizaci\u00f3n.<\/p>\n<h3 data-start=\"1116\" data-end=\"1600\">Hallazgos<\/h3>\n<p data-start=\"1602\" data-end=\"2069\">El an\u00e1lisis transcript\u00f3mico identific\u00f3 m\u00e1s de 2.400 genes diferencialmente expresados, con una marcada sobreexpresi\u00f3n de v\u00edas relacionadas con se\u00f1alizaci\u00f3n de citoquinas, receptores tipo NOD, apoptosis y melanog\u00e9nesis, junto con una disminuci\u00f3n de rutas asociadas a autofagia y se\u00f1alizaci\u00f3n metab\u00f3lica. Estos hallazgos fueron respaldados por un aumento significativo de da\u00f1o oxidativo en ADN y prote\u00ednas, as\u00ed como por la activaci\u00f3n de caspasas en el m\u00fasculo afectado.<\/p>\n<p data-start=\"2071\" data-end=\"2609\">Adem\u00e1s, los autores realizaron ensayos in vitro en miotubos de salm\u00f3n Atl\u00e1ntico que mostraron que la estimulaci\u00f3n con TNF-\u03b1 induce la producci\u00f3n de especies reactivas de ox\u00edgeno a trav\u00e9s de la v\u00eda NF-\u03baB, reforzando la hip\u00f3tesis de un mecanismo de retroalimentaci\u00f3n entre inflamaci\u00f3n, estr\u00e9s oxidativo y da\u00f1o tisular. En conjunto, los resultados sugieren que la melanizaci\u00f3n muscular no corresponde a un fen\u00f3meno meramente pigmentario, sino a un proceso patol\u00f3gico complejo sostenido por inflamaci\u00f3n persistente y desregulaci\u00f3n metab\u00f3lica.<\/p>\n<p data-start=\"2611\" data-end=\"2898\">El trabajo concluye que comprender estos mecanismos a nivel molecular es clave para avanzar en estrategias de prevenci\u00f3n y mitigaci\u00f3n de la melanosis muscular en salm\u00f3nidos, as\u00ed como para mejorar la calidad del producto final y el bienestar de los peces en sistemas de cultivo intensivo.<\/p>\n<p data-start=\"2900\" data-end=\"2933\"><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0044848626001584\"><strong data-start=\"2900\" data-end=\"2933\">Lea el estudio completo aqu\u00ed.<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un estudio cient\u00edfico chileno investig\u00f3 los procesos moleculares asociados a la melanosis muscular en salm\u00f3n Atl\u00e1ntico, identificando la activaci\u00f3n de respuestas inflamatorias, estr\u00e9s oxidativo y alteraciones en la expresi\u00f3n g\u00e9nica que contribuyen a la formaci\u00f3n de focos melanizados y a la p\u00e9rdida de calidad del filete en la salmonicultura.<\/p>\n","protected":false},"author":10,"featured_media":85902,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[63],"tags":[1261,143,3522,20814,122,2907,27702,29019,740,6860,184,6027,137,197,764,613,3923],"class_list":["post-85901","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciencia","tag-acuicola","tag-acuicultura","tag-centro-incar","tag-centro-interdisciplinario-para-la-investigacion-acuicola","tag-industria-acuicola","tag-industria-salmonera","tag-liane-bassini","tag-millennium-institute-center-for-genome-regulation","tag-pontificia-universidad-catolica-de-chile","tag-puc","tag-salmon","tag-salmonera","tag-salmones","tag-salmonicultura","tag-universidad-andres-bello","tag-universidad-san-sebastian","tag-uss"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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