{"id":92687,"date":"2026-09-23T16:06:43","date_gmt":"2026-09-23T20:06:43","guid":{"rendered":"https:\/\/www.mundoacuicola.cl\/new\/?p=92687"},"modified":"2026-09-23T16:06:43","modified_gmt":"2026-09-23T20:06:43","slug":"nueva-herramienta-busca-dar-mayor-certeza-al-diagnostico-molecular-de-ipnv","status":"publish","type":"post","link":"https:\/\/www.mundoacuicola.cl\/new\/nueva-herramienta-busca-dar-mayor-certeza-al-diagnostico-molecular-de-ipnv\/","title":{"rendered":"Nueva herramienta busca dar mayor certeza al diagn\u00f3stico molecular de IPNV"},"content":{"rendered":"<div class=\"qMYqUG_convSearchResultHighlightRoot\">\n<div class=\"\" data-turn-id-container=\"request-6a5a9b33-3dc4-83e9-9db2-a113ba3def3b-30\" data-is-intersecting=\"true\">\n<section class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a5a9b33-3dc4-83e9-9db2-a113ba3def3b-30\" data-turn-id-container=\"request-6a5a9b33-3dc4-83e9-9db2-a113ba3def3b-30\" data-testid=\"conversation-turn-18\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" data-conversation-screenshot-content=\"\">\n<div class=\"flex max-w-full flex-col gap-4 [&amp;&gt;div:has([data-free-thinking-preview-answer=true])+:is(.text-message,.relative:has(&gt;.text-message))]:-mt-2 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"9c6c5047-f315-4803-90eb-79d83252ca48\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-6-thinking\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"LR5Y_W_content yWcLfW_streamingContainer markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\">\n<p class=\"PDq2pG_selectionAnchorContainer\" dir=\"auto\" data-start=\"78\" data-end=\"347\">Una nueva herramienta de control de calidad podr\u00eda ayudar a mejorar la interpretaci\u00f3n de los an\u00e1lisis utilizados para detectar el virus de la necrosis pancre\u00e1tica infecciosa (IPNV) en salmones, especialmente cuando existen dudas sobre el estado de la muestra analizada.<\/p>\n<p dir=\"auto\" data-start=\"349\" data-end=\"761\">El estudio fue desarrollado por Yoanna Eissler, Javiera Garc\u00eda V\u00e9liz, David Tapia, Cristian B. Canales-Aguirre y Jos\u00e9 Manuel Y\u00e1\u00f1ez, investigadores de la Universidad de Valpara\u00edso, Pontificia Universidad Cat\u00f3lica de Valpara\u00edso, Universidad de Chile y Universidad de Los Lagos, Campus Puerto Montt. El trabajo fue aceptado para publicaci\u00f3n en <em data-start=\"690\" data-end=\"722\">Journal of Virological Methods<\/em>.<\/p>\n<p dir=\"auto\" data-start=\"763\" data-end=\"987\">La investigaci\u00f3n se centr\u00f3 en ELF4, un nuevo ensayo dise\u00f1ado para funcionar como control interno de calidad durante la detecci\u00f3n de IPNV mediante RT-qPCR, una de las t\u00e9cnicas moleculares utilizadas para identificar el virus.<\/p>\n<p dir=\"auto\" data-start=\"989\" data-end=\"1259\">En t\u00e9rminos pr\u00e1cticos, la herramienta busca responder una pregunta relevante para los laboratorios: cuando la se\u00f1al del virus es baja, \u00bfse debe realmente a una menor presencia viral o podr\u00eda estar influida por la calidad de la muestra o del RNA utilizado en el an\u00e1lisis?<\/p>\n<h3 dir=\"auto\" data-section-id=\"ad82hu\" data-start=\"1261\" data-end=\"1312\">Una se\u00f1al para evaluar la calidad de la muestra<\/h3>\n<p dir=\"auto\" data-start=\"1314\" data-end=\"1489\">Para desarrollar el ensayo, los investigadores compararon tres protocolos que utilizan el gen EF1\u03b1, empleado habitualmente como referencia en an\u00e1lisis moleculares de salmones.<\/p>\n<p dir=\"auto\" data-start=\"1491\" data-end=\"1928\">La primera evaluaci\u00f3n utiliz\u00f3 53 muestras de salm\u00f3n Atl\u00e1ntico, trucha arco\u00edris y salm\u00f3n Coho provenientes de actividades de vigilancia de IPNV realizadas en el sur de Chile. Los resultados mostraron diferencias entre los protocolos, mientras que ELF4 present\u00f3 un comportamiento m\u00e1s estable y una menor variabilidad que uno de los m\u00e9todos utilizados previamente.<\/p>\n<p dir=\"auto\" data-start=\"1930\" data-end=\"2068\">Posteriormente, la herramienta fue evaluada con <strong data-start=\"1978\" data-end=\"2067\">500 muestras de ri\u00f1\u00f3n y bazo recolectadas durante un brote confirmado de IPNV en 2023<\/strong>.<\/p>\n<p dir=\"auto\" data-start=\"2070\" data-end=\"2320\">En este conjunto, la se\u00f1al entregada por ELF4 se mantuvo dentro de un rango relativamente estable, mientras que la se\u00f1al correspondiente al virus present\u00f3 una variaci\u00f3n considerablemente mayor entre las muestras.<\/p>\n<p dir=\"auto\" data-start=\"2322\" data-end=\"2700\">Los investigadores observaron adem\u00e1s una asociaci\u00f3n moderada entre ambas mediciones. Seg\u00fan el estudio, esto sugiere que parte de las diferencias observadas al detectar el virus podr\u00eda estar relacionada con factores propios de la muestra, como la calidad del RNA o su conservaci\u00f3n, y no \u00fanicamente con la cantidad de material viral presente.<\/p>\n<h3 dir=\"auto\" data-section-id=\"132dste\" data-start=\"2702\" data-end=\"2740\">Apoyo para la vigilancia sanitaria<\/h3>\n<p dir=\"auto\" data-start=\"2742\" data-end=\"2922\">El equipo tambi\u00e9n analiz\u00f3 informaci\u00f3n proveniente de un desaf\u00edo experimental anterior con trucha arco\u00edris, que incluy\u00f3 muestras de 47 peces sobrevivientes y 34 casos de mortalidad.<\/p>\n<p dir=\"auto\" data-start=\"2924\" data-end=\"3283\">Al estudiar ambos grupos por separado, el comportamiento de ELF4 no mostr\u00f3 una relaci\u00f3n significativa con la intensidad de la se\u00f1al de IPNV. Para los autores, este resultado respalda su utilizaci\u00f3n como indicador de calidad de la muestra, en lugar de interpretarlo como un marcador asociado a la gravedad de la infecci\u00f3n.<\/p>\n<p dir=\"auto\" data-start=\"3285\" data-end=\"3512\">La principal aplicaci\u00f3n propuesta es incorporar este control dentro de los an\u00e1lisis rutinarios de IPNV para contar con informaci\u00f3n adicional sobre si la muestra tiene una calidad suficiente para entregar un resultado confiable.<\/p>\n<p dir=\"auto\" data-start=\"3514\" data-end=\"3748\">De esta manera, una se\u00f1al viral baja podr\u00eda evaluarse considerando tambi\u00e9n el estado del material analizado, algo especialmente relevante en muestras obtenidas bajo distintas condiciones de recolecci\u00f3n, almacenamiento y procesamiento.<\/p>\n<p dir=\"auto\" data-start=\"3750\" data-end=\"4026\">Los autores concluyen que ELF4 mostr\u00f3 un desempe\u00f1o consistente tanto en muestras de terreno como en los datos del brote y del desaf\u00edo experimental, respaldando su uso como control de calidad en programas de vigilancia de IPNV en salmones.<\/p>\n<p dir=\"auto\" data-start=\"4028\" data-end=\"4207\" data-is-last-node=\"\" data-is-only-node=\"\">El estudio completo, <em data-start=\"4049\" data-end=\"4139\">Diagnostic evaluation of an EF1\u03b1 RT-qPCR assay for RNA quality control in IPNV detection<\/em>, fue aceptado para publicaci\u00f3n en <em data-start=\"4174\" data-end=\"4206\">Journal of Virological Methods<\/em>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Investigadores de la Universidad de Valpara\u00edso, PUCV, Universidad de Chile y Universidad de Los Lagos evaluaron ELF4, un nuevo control interno de calidad para an\u00e1lisis RT-qPCR de IPNV. La herramienta fue probada en muestras de tres especies de salm\u00f3nidos, 500 muestras obtenidas durante un brote confirmado en 2023 y datos de un desaf\u00edo experimental previo.<\/p>\n","protected":false},"author":10,"featured_media":92688,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[398],"tags":[23974,30594,11063,30595,10794,447,12809,1357,1477,22434,541,538,799,2238,26568],"class_list":["post-92687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-titular","tag-diagnostico-molecular","tag-elf4","tag-ipnv","tag-journal-of-virological-methods","tag-necrosis-pancreatica-infecciosa","tag-pucv","tag-rt-qpcr","tag-salmon-atlantico","tag-salmon-coho","tag-sanidad-acuicola","tag-trucha-arcoiris","tag-universidad-de-chile","tag-universidad-de-los-lagos","tag-universidad-de-valparaiso","tag-vigilancia-sanitaria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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