{"id":52544,"date":"2023-06-07T08:04:43","date_gmt":"2023-06-07T11:04:43","guid":{"rendered":"https:\/\/www.mundoacuicola.cl\/new\/?p=52544"},"modified":"2023-06-08T12:46:30","modified_gmt":"2023-06-08T15:46:30","slug":"piscirickettsia-salmonis-viva-e-inactivada-activa-la-inmunidad-nutricional-en-salmon-del-atlantico","status":"publish","type":"post","link":"https:\/\/www.mundoacuicola.cl\/new\/piscirickettsia-salmonis-viva-e-inactivada-activa-la-inmunidad-nutricional-en-salmon-del-atlantico\/","title":{"rendered":"Piscirickettsia salmonis (viva e inactivada) activa la inmunidad nutricional en salm\u00f3n del Atl\u00e1ntico"},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=26\" target=\"_blank\" rel=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=26 noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignright\" src=\"https:\/\/www.mundoacuicola.cl\/medios\/?camp=26\" alt=\"\" width=\"300\" height=\"250\" \/><\/a><\/span>La inmunidad nutricional regula la homeostasis de micronutrientes como el hierro, el manganeso y el zinc a nivel sist\u00e9mico y celular, evitando que los microorganismos invasores tengan acceso a ellos, limitando as\u00ed su proceso infectivo. Bajo esta premisa, investigadores de la Universidad Austral de Chile (UACh)\/INCAR y de la Universidad San Sebasti\u00e1n (USS) sede Patagonia, evaluaron la activaci\u00f3n de Inmunidad nutricional en salm\u00f3n del Atl\u00e1ntico (Salmo salar) estimulados intraperitonealmente con\u00a0Piscirickettsia salmonis\u00a0viva e inactivada.<\/p>\n<p>El estudio \u201cLive and inactivated Piscirickettsia salmonis activated nutritional immunity in Atlantic salmon (Salmo salar)\u201d,\u00a0 de Danixa Mart\u00ednez, Ricardo Oyarz\u00fan-Salazar, Ana Mar\u00eda Quilapi, Jos\u00e9 Coronado, Ricardo Enriquez, Carolina Vargas-Lagos, Cristian Oliver, Natacha Santiba\u00f1ez, Marcos Godoy, Jos\u00e9 Luis Mu\u00f1oz, Luis Vargas-Chacoff y Alex Romero concluy\u00f3 que tanto P. salmonis viva y atenuada son capaces de modular el contenido de hierro plasm\u00e1tico y hep\u00e1tico, relacionado a la regulaci\u00f3n de la expresi\u00f3n de genes claves del metabolismo de micronutrientes como hierro, zinc y manganeso.<\/p>\n<p>El estudio utiliz\u00f3 muestras de tejido hep\u00e1tico y sangre\/plasma de peces inoculados via intraperitoneal con P. salmonis y evaluados a los d\u00edas 3, 7 y 14 post-infecci\u00f3n (dpi). Los hallazgos obtenidos indicaron una disminuci\u00f3n del hematocrito a los 3 y 7 dpi en peces estimulados con P. salmonis viva, sin cambios en los peces desafiados con P. salmonis inactivada. Asimismo, se observ\u00f3 una disminuci\u00f3n del contenido de hierro plasm\u00e1tico en peces estimulados con P. salmonis viva e inactivada a los 3 dpi.<\/p>\n<p>De igual forma, se observ\u00f3 la modulaci\u00f3n positiva de la expresi\u00f3n de genes inmuno-nutricionales en h\u00edgado, asociados al metabolismo del fierro como tfr1, dmt1 e ireg1, en las dos condiciones experimentales analizadas. Esta tendencia no fue observada para los genes zip8, ft-h y hamp, cuya expresi\u00f3n se vio disminuida. Asimismo, el contenido de hierro intracelular hep\u00e1tico aument\u00f3 a los 7 y 14 dpi en peces estimulados con P. salmonis viva e inactivada, mientras que el contenido de zinc disminuy\u00f3 a <span style=\"font-weight: 400;\"><strong><a href=\"https:\/\/www.mundoacuicola.cl\/medios\/?url_camp=192\"><img decoding=\"async\" class=\"alignright\" src=\"https:\/\/www.mundoacuicola.cl\/medios\/?camp=192\" alt=\"\" width=\"300\" height=\"250\" \/><\/a><\/strong><\/span>los 14 dpi, no observ\u00e1ndose cambios en el contenido de manganeso en peces sometidos a ambas condiciones experimentales<\/p>\n<p>Seg\u00fan los investigadores, \u201clos resultados sugieren que la inmunidad nutricional no distingue entre P. salmonis viva e inactivada, provocando una respuesta inmunitaria similar\u00a0y\u00a0se auto-activar\u00eda con la detecci\u00f3n de PAMPs bacterianos, y no por el secuestro y\/o competencia de micronutrientes por parte de P. salmonis viva.<\/p>\n<p>Revisa aqu\u00ed el paper \u201cLive and inactivated Piscirickettsia salmonis activated nutritional immunity in Atlantic salmon (Salmo salar)\u201d, publicado por la revista \u201cFrontiers in Immunology\u201d:<\/p>\n<p><a href=\"https:\/\/www.frontiersin.org\/articles\/10.3389\/fimmu.2023.1187209\/full\">https:\/\/www.frontiersin.org\/articles\/10.3389\/fimmu.2023.1187209\/full<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Investigadores descubren que la inmunidad nutricional del salm\u00f3n se activa frente a la presencia de Piscirickettsia salmonis. <\/p>\n","protected":false},"author":8,"featured_media":52545,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[60],"tags":[17334,17332,17331,473,17330,458,256,17333],"class_list":["post-52544","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-salmonicultura","tag-contenido-de-zinc","tag-expresion-de-genes","tag-hierro-plasmatico","tag-incar","tag-inmunidad-nutricional","tag-piscirickettsia-salmonis","tag-salmon-del-atlantico","tag-tejido-hepatico"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - 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