{"id":12972,"date":"2024-06-19T17:58:07","date_gmt":"2024-06-19T17:58:07","guid":{"rendered":"https:\/\/dailyai.com\/?p=12972"},"modified":"2024-06-20T11:28:09","modified_gmt":"2024-06-20T11:28:09","slug":"ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis","status":"publish","type":"post","link":"https:\/\/dailyai.com\/pt\/2024\/06\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\/","title":{"rendered":"Teste sangu\u00edneo alimentado por IA mostra-se promissor para o diagn\u00f3stico precoce da doen\u00e7a de Parkinson"},"content":{"rendered":"<p><b>Os investigadores desenvolveram uma an\u00e1lise ao sangue com recurso a IA que pode prever o aparecimento da doen\u00e7a de Parkinson at\u00e9 sete anos antes de os sintomas se manifestarem.\u00a0<\/b><\/p>\n<p><span style=\"font-weight: 400;\">O <\/span><a href=\"https:\/\/www.nature.com\/articles\/s41467-024-48961-3\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">estudo<\/span><\/a><span style=\"font-weight: 400;\">A investiga\u00e7\u00e3o, liderada por cientistas da University College London (UCL) e do Centro M\u00e9dico Universit\u00e1rio de Goettingen, na Alemanha, e publicada na revista Nature Communications, poder\u00e1 desbloquear tratamentos precoces e direccionados para retardar a progress\u00e3o desta doen\u00e7a neurodegenerativa debilitante.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A doen\u00e7a de Parkinson \u00e9 uma preocupa\u00e7\u00e3o crescente a n\u00edvel mundial, afectando cerca de 10 milh\u00f5es de pessoas em todo o mundo, incluindo mais de 1 milh\u00e3o de indiv\u00edduos nos EUA e 150 000 pessoas no Reino Unido.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A doen\u00e7a \u00e9 caracterizada por sintomas como tremores, dificuldades de movimento, rigidez muscular, problemas de equil\u00edbrio, problemas de mem\u00f3ria, tonturas e dores nos nervos. S<\/span><span style=\"font-weight: 400;\">Os sintomas surgem devido \u00e0 morte de c\u00e9lulas nervosas na \"substantia nigra\", uma parte do c\u00e9rebro respons\u00e1vel pelo controlo do movimento.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Atualmente, n\u00e3o existem tratamentos dispon\u00edveis para parar ou inverter a progress\u00e3o da doen\u00e7a e a maioria dos doentes s\u00f3 \u00e9 diagnosticada depois de os sintomas j\u00e1 se terem desenvolvido. <\/span><span style=\"font-weight: 400;\">Como explicou a Dra. Jenny H\u00e4llqvist da UCL, coautora do estudo, \"as pessoas s\u00e3o diagnosticadas quando os neur\u00f3nios j\u00e1 est\u00e3o perdidos. Temos de proteger esses neur\u00f3nios e n\u00e3o esperar que eles desapare\u00e7am\".<\/span><\/p>\n<p>Esta inovadora an\u00e1lise ao sangue melhorada por IA pode prever a doen\u00e7a de Parkinson com uma precis\u00e3o de at\u00e9 79% sete anos antes do aparecimento dos sintomas.<\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Not\u00edcias de investiga\u00e7\u00e3o \ud83d\udce3<\/p>\n<p>A investiga\u00e7\u00e3o financiada pela Parkinson UK \u00e9 promissora para um sangue<br \/>\nteste que poder\u00e1 identificar a doen\u00e7a de Parkinson antes da ocorr\u00eancia de sintomas de movimento.<\/p>\n<p>Leia a hist\u00f3ria completa e o que isto significa para as pessoas com Parkinson \ud83d\udc49\ud83c\udffd <a href=\"https:\/\/t.co\/2LwhkHRXbf\">https:\/\/t.co\/2LwhkHRXbf<\/a> <a href=\"https:\/\/t.co\/yxTZHRSgJQ\">pic.twitter.com\/yxTZHRSgJQ<\/a><\/p>\n<p>- Parkinson's UK (@ParkinsonsUK) <a href=\"https:\/\/twitter.com\/ParkinsonsUK\/status\/1803082270774825295?ref_src=twsrc%5Etfw\">18 de junho de 2024<\/a><\/p><\/blockquote>\n<p><script src=\"https:\/\/platform.twitter.com\/widgets.js\" async=\"\" charset=\"utf-8\"><\/script><\/p>\n<h2>Mais informa\u00e7\u00f5es sobre o estudo<\/h2>\n<p><span style=\"font-weight: 400;\">O estudo funcionou da seguinte forma:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Identifica\u00e7\u00e3o de potenciais biomarcadores<\/b><span style=\"font-weight: 400;\">s: O estudo come\u00e7ou por analisar amostras de sangue de doentes com Parkinson recentemente diagnosticados e de controlos saud\u00e1veis, utilizando t\u00e9cnicas avan\u00e7adas de espetrometria de massa. Isto permitiu aos investigadores identificar 47 prote\u00ednas que se expressavam de forma diferente entre os dois grupos.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Desenvolvimento de um teste sangu\u00edneo espec\u00edfico<\/b><span style=\"font-weight: 400;\">: A partir da sua an\u00e1lise inicial, a equipa desenvolveu um teste sangu\u00edneo espec\u00edfico para medir os n\u00edveis de 121 prote\u00ednas espec\u00edficas.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Valida\u00e7\u00e3o do teste<\/b><span style=\"font-weight: 400;\">: Em seguida, os investigadores aplicaram o teste espec\u00edfico a amostras de sangue de um grupo independente de doentes de Parkinson, de controlos saud\u00e1veis, de indiv\u00edduos com outras perturba\u00e7\u00f5es neurol\u00f3gicas e de doentes com perturba\u00e7\u00e3o isolada do comportamento do sono REM (iRBD), um fator de risco conhecido para a doen\u00e7a de Parkinson. Isto confirmou que 23 das prote\u00ednas medidas diferiam significativamente entre os doentes de Parkinson e os controlos saud\u00e1veis.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Aplicar a aprendizagem autom\u00e1tica<\/b><span style=\"font-weight: 400;\">: Os dados da etapa de valida\u00e7\u00e3o foram utilizados para treinar modelos de aprendizagem autom\u00e1tica para distinguir entre a doen\u00e7a de Parkinson e controlos saud\u00e1veis com base nos n\u00edveis de prote\u00edna. Um modelo que utilizou apenas oito das prote\u00ednas foi capaz de classificar corretamente as amostras com doen\u00e7a de Parkinson e saud\u00e1veis com uma precis\u00e3o de 100%.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Resultados<\/b><span style=\"font-weight: 400;\">: Para confirmar ainda mais os resultados, os investigadores aperfei\u00e7oaram o teste e aplicaram-no a um grupo separado de 54 doentes com DRBi que tinham fornecido 146 amostras de sangue ao longo do tempo. Os modelos de aprendizagem autom\u00e1tica previram que 70-79% destas amostras eram semelhantes \u00e0 doen\u00e7a de Parkinson, tendo algumas destas previs\u00f5es sido efectuadas at\u00e9 sete anos antes de os indiv\u00edduos desenvolverem sintomas de Parkinson.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">A equipa planeia agora simplificar ainda mais o teste, permitindo que os doentes enviem simplesmente uma gota de sangue num cart\u00e3o para o laborat\u00f3rio para an\u00e1lise.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O Professor David Dexter, diretor de investiga\u00e7\u00e3o da Parkinson's UK, uma institui\u00e7\u00e3o de caridade que ajudou a financiar o estudo, elogiou os resultados, <\/span><a href=\"https:\/\/www.parkinsons.org.uk\/news\/blood-test-shows-promise-identifying-parkinsons-movement-symptoms\"><span style=\"font-weight: 400;\">afirmando<\/span><\/a><span style=\"font-weight: 400;\">\"As descobertas juntam-se a uma excitante onda de atividade recente para encontrar uma forma simples de testar e medir a doen\u00e7a de Parkinson\". O investigador sugeriu ainda que o teste pode ser capaz de diferenciar a doen\u00e7a de Parkinson de outras doen\u00e7as semelhantes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Embora sejam necess\u00e1rios ensaios mais alargados para validar a exatid\u00e3o e a fiabilidade deste teste sangu\u00edneo melhorado por IA, ele representa um enorme passo em frente na procura de um diagn\u00f3stico precoce da doen\u00e7a de Parkinson.\u00a0<\/span><\/p>\n<p>N\u00e3o \u00e9 a primeira vez que a IA \u00e9 utilizada para identificar factores de risco ou sinais da doen\u00e7a de Parkinson.<\/p>\n<p>H\u00e1 pouco tempo, os investigadores <a href=\"https:\/\/dailyai.com\/pt\/2023\/08\/ai-eye-scan-yields-excellent-results-for-parkinsons-disease-early-detection\/\">desenvolveu um teste de vis\u00e3o<\/a> que poderia igualmente identificar a doen\u00e7a antes do aparecimento dos sintomas.<\/p>\n<p>O projeto AlphaFold da Google, de longa data, mostra-se promissor na descoberta da forma exacta como <a href=\"https:\/\/dailyai.com\/pt\/2024\/05\/alphafold-3-deepmind-evolves-its-ai-protein-folding-project\/\">doen\u00e7as como a doen\u00e7a de Parkinson desenvolvem-se<\/a>e os investigadores da Universidade de Cambridge desenvolveram um modelo para <a href=\"https:\/\/dailyai.com\/pt\/2024\/04\/scientists-accelerate-search-for-parkinsons-treatments-using-ai\/\">descoberta de medicamentos para a doen\u00e7a de Parkinson<\/a> que eram 1000 vezes mais r\u00e1pidos do que os m\u00e9todos convencionais.<\/p>\n<p>A IA est\u00e1 a ter um ano de grande sucesso no combate \u00e0s doen\u00e7as e na acelera\u00e7\u00e3o dos tratamentos de ponta, com <a href=\"https:\/\/dailyai.com\/pt\/2024\/06\/openai-and-color-health-partner-to-accelerate-cancer-treatment\/\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\"><span class=\"noTranslate\" data-no-translation=\"\">OpenAI<\/span><\/span><\/span><\/span><\/span><\/span> e a Color Health a colaborar<\/a> sobre um copiloto com cancro no in\u00edcio desta semana.<\/p>","protected":false},"excerpt":{"rendered":"<p>Os investigadores desenvolveram uma an\u00e1lise ao sangue com recurso a IA que pode prever o aparecimento da doen\u00e7a de Parkinson at\u00e9 sete anos antes de os sintomas se manifestarem.  O estudo, liderado por cientistas da University College London (UCL) e do Centro M\u00e9dico Universit\u00e1rio de Goettingen, na Alemanha, e publicado na revista Nature Communications, poder\u00e1 desbloquear tratamentos precoces e direccionados para retardar a progress\u00e3o desta doen\u00e7a neurodegenerativa debilitante. A doen\u00e7a de Parkinson \u00e9 uma preocupa\u00e7\u00e3o crescente a n\u00edvel mundial, afectando cerca de 10 milh\u00f5es de pessoas em todo o mundo, incluindo mais de 1 milh\u00e3o de indiv\u00edduos nos EUA e 150 000 no Reino Unido.  A doen\u00e7a \u00e9 caracterizada por sintomas como tremores, dificuldades de movimento e rigidez muscular,<\/p>","protected":false},"author":2,"featured_media":12978,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[204,178],"class_list":["post-12972","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ethics","tag-healthcare","tag-medicine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>AI-powered blood test shows promise for early Parkinson&#039;s disease diagnosis | DailyAI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dailyai.com\/pt\/2024\/06\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AI-powered blood test shows promise for early Parkinson&#039;s disease diagnosis | DailyAI\" \/>\n<meta property=\"og:description\" content=\"Researchers have developed an AI-enhanced blood test that can predict the onset of Parkinson&#8217;s disease up to seven years before symptoms manifest.\u00a0 The study, led by scientists from University College London (UCL) and the University Medical Center Goettingen in Germany and published in Nature Communications, could unlock early, targeted treatments to slow the progression of this debilitating neurodegenerative disorder. Parkinson&#8217;s disease is a rising global health concern, affecting nearly 10 million people worldwide, including over 1 million individuals in the US and 150,000 people in the UK.\u00a0 The disease is characterized by symptoms such as tremors, movement difficulties, muscle stiffness,\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dailyai.com\/pt\/2024\/06\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\/\" \/>\n<meta property=\"og:site_name\" content=\"DailyAI\" \/>\n<meta property=\"article:published_time\" content=\"2024-06-19T17:58:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-20T11:28:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/dailyai.com\/wp-content\/uploads\/2024\/06\/DALL\u00b7E-2024-06-19-19.49.22-An-advanced-laboratory-setting-at-night-with-scientists-analyzing-blood-samples.-The-scene-is-illuminated-with-red-blue-green-and-black-lighting-c.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1792\" \/>\n\t<meta property=\"og:image:height\" content=\"1024\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Sam Jeans\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:site\" content=\"@DailyAIOfficial\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sam Jeans\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\\\/\"},\"author\":{\"name\":\"Sam Jeans\",\"@id\":\"https:\\\/\\\/dailyai.com\\\/#\\\/schema\\\/person\\\/711e81f945549438e8bbc579efdeb3c9\"},\"headline\":\"AI-powered blood test shows promise for early Parkinson&#8217;s disease diagnosis\",\"datePublished\":\"2024-06-19T17:58:07+00:00\",\"dateModified\":\"2024-06-20T11:28:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\\\/\"},\"wordCount\":723,\"publisher\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dailyai.com\\\/2024\\\/06\\\/ai-powered-blood-test-shows-promise-for-early-parkinsons-disease-diagnosis\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/dailyai.com\\\/wp-content\\\/uploads\\\/2024\\\/06\\\/DALL\u00b7E-2024-06-19-19.49.22-An-advanced-laboratory-setting-at-night-with-scientists-analyzing-blood-samples.-The-scene-is-illuminated-with-red-blue-green-and-black-lighting-c.webp\",\"keywords\":[\"Healthcare\",\"Medicine\"],\"articleSection\":[\"Ethics &amp; 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