{"id":31465,"date":"2026-02-23T14:00:13","date_gmt":"2026-02-23T17:00:13","guid":{"rendered":"https:\/\/oficialnoticias.com\/?p=31465"},"modified":"2026-02-23T14:00:15","modified_gmt":"2026-02-23T17:00:15","slug":"estudo-brasileiro-aponta-avanco-na-recuperacao-de-lesoes-medulares","status":"publish","type":"post","link":"https:\/\/oficialnoticias.com\/?p=31465","title":{"rendered":"estudo brasileiro aponta avan\u00e7o na recupera\u00e7\u00e3o de les\u00f5es medulares"},"content":{"rendered":"<p><\/p>\n<div>\n<p>Um estudo brasileiro iniciado h\u00e1 cerca de 30 anos investiga a<bsp-link-enhancement><br \/>\n    <span class=\"LinkEnhancement\"><a class=\"Link\" href=\"https:\/\/www.itatiaia.com.br\/saude\/o-que-e-polilaminina-aprovada-para-estudo-no-tratamento-de-pessoas-com-lesao-medular\" title=\" &lt;b&gt;polilaminina&lt;\/b&gt;\"> <b>polilaminina<\/b><\/a><\/span><\/bsp-link-enhancement> como uma poss\u00edvel estrat\u00e9gia para restaurar fun\u00e7\u00f5es perdidas ap\u00f3s les\u00f5es graves na medula espinhal. <\/p>\n<p>Desenvolvida por pesquisadores da Universidade Federal do Rio de Janeiro (UFRJ), a subst\u00e2ncia vem apresentando resultados iniciais, mas ainda depende de valida\u00e7\u00e3o em ensaios cl\u00ednicos mais amplos para comprovar seguran\u00e7a e efic\u00e1cia.<\/p>\n<p><bsp-link-enhancement><br \/>\n    <span class=\"LinkEnhancement\"><a class=\"Link\" href=\"https:\/\/www.itatiaia.com.br\/saude\/polilaminina-pacientes-acionam-a-justica-por-acesso-a-substancia-antes-da-aprovacao-da-anvisa\" title=\"&lt;b&gt;Polilaminina: pacientes acionam a Justi\u00e7a por acesso \u00e0 subst\u00e2ncia antes da aprova\u00e7\u00e3o da Anvisa&lt;\/b&gt;\"><b>Polilaminina: pacientes acionam a Justi\u00e7a por acesso \u00e0 subst\u00e2ncia antes da aprova\u00e7\u00e3o da Anvisa<\/b><\/a><\/span><\/bsp-link-enhancement><\/p>\n<h2>Como a polilaminina funciona<\/h2>\n<p>A medula espinhal funciona como a principal via de transmiss\u00e3o dos comandos do c\u00e9rebro para o restante do corpo. Quando ocorre uma les\u00e3o, esses est\u00edmulos deixam de chegar aos m\u00fasculos e \u00f3rg\u00e3os. A polilaminina atua justamente nesse ponto.<\/p>\n<p>A subst\u00e2ncia \u00e9 formada por uma rede de prote\u00ednas chamadas lamininas, capazes de favorecer a recupera\u00e7\u00e3o dos ax\u00f4nios, estruturas dos neur\u00f4nios respons\u00e1veis por conduzir a informa\u00e7\u00e3o. A proposta \u00e9 que esse biomaterial ajude a restabelecer conex\u00f5es interrompidas ap\u00f3s o trauma.<\/p>\n<p>A pesquisa teve in\u00edcio sob coordena\u00e7\u00e3o da bi\u00f3loga <b>Tatiana Sampaio<\/b>, na UFRJ. O trabalho surgiu a partir de estudos sobre prote\u00ednas presentes na placenta e seu poss\u00edvel reaproveitamento em terapias celulares.<\/p>\n<h2>Resultados iniciais<\/h2>\n<p>Em um estudo acad\u00eamico com oito pacientes com les\u00e3o medular completa, os pesquisadores observaram recupera\u00e7\u00e3o de movimentos sutis considerados clinicamente relevantes.<\/p>\n<p>Segundo dados divulgados pelo grupo, a taxa de resposta funcional passou de cerca de 10% para at\u00e9 75% nos par\u00e2metros avaliados. Apesar dos n\u00fameros, os pr\u00f3prios pesquisadores destacam que os achados ainda precisam ser confirmados em pesquisas maiores e controladas.<\/p>\n<p>Enquanto os ensaios cl\u00ednicos mais amplos n\u00e3o s\u00e3o conclu\u00eddos, alguns pacientes t\u00eam recorrido \u00e0 Justi\u00e7a para obter acesso ao tratamento por meio do chamado uso compassivo. At\u00e9 o momento, dezenas de pedidos foram protocolados, e parte deles recebeu autoriza\u00e7\u00e3o.<\/p>\n<p>A Ag\u00eancia Nacional de Vigil\u00e2ncia Sanit\u00e1ria (Anvisa) refor\u00e7a que a seguran\u00e7a e a efic\u00e1cia da polilaminina s\u00f3 poder\u00e3o ser confirmadas ap\u00f3s a conclus\u00e3o de todas as etapas da pesquisa cl\u00ednica. Ainda assim, a legisla\u00e7\u00e3o permite o uso compassivo em situa\u00e7\u00f5es espec\u00edficas, quando o paciente n\u00e3o se enquadra em estudos cl\u00ednicos e n\u00e3o possui outras alternativas terap\u00eauticas.<\/p>\n<p>Os pesquisadores apontam que o tempo entre o trauma e a aplica\u00e7\u00e3o pode ser determinante para o resultado. A recomenda\u00e7\u00e3o atual \u00e9 que a subst\u00e2ncia seja injetada preferencialmente at\u00e9 tr\u00eas dias ap\u00f3s a les\u00e3o.<\/p>\n<p>Isso ocorre porque, com o passar do tempo, forma-se uma cicatriz ao redor dos ax\u00f4nios lesionados, o que dificulta a a\u00e7\u00e3o do biomaterial e reduz as chances de recupera\u00e7\u00e3o funcional.<\/p>\n<p>Recentemente, quatro pacientes que receberam a subst\u00e2ncia morreram. De acordo com a equipe respons\u00e1vel pela pesquisa, at\u00e9 o momento n\u00e3o h\u00e1 evid\u00eancias de que os \u00f3bitos tenham rela\u00e7\u00e3o com o tratamento.<\/p>\n<h2>Pode virar tratamento padr\u00e3o?<\/h2>\n<p>Para o ortopedista especialista em coluna vertebral <b>Daniel Oliveira<\/b>, a polilaminina representa uma linha de pesquisa promissora, mas que ainda exige comprova\u00e7\u00e3o robusta.<\/p>\n<p>Segundo ele, existe possibilidade te\u00f3rica de que biomateriais baseados em laminina venham a integrar protocolos terap\u00eauticos para les\u00f5es do sistema nervoso central no futuro. No entanto, isso depende do cumprimento rigoroso das etapas cient\u00edficas.<\/p>\n<p>\u201c\u00c9 indispens\u00e1vel a realiza\u00e7\u00e3o de estudos pr\u00e9-cl\u00ednicos consistentes, ensaios cl\u00ednicos de fase I para seguran\u00e7a, fase II para efic\u00e1cia preliminar e fase III para compara\u00e7\u00e3o com o tratamento padr\u00e3o\u201d, afirma \u00e0 <b>Itatiaia.<\/b> <\/p>\n<p>Na avalia\u00e7\u00e3o do especialista, somente ap\u00f3s a comprova\u00e7\u00e3o cient\u00edfica adequada, aprova\u00e7\u00e3o regulat\u00f3ria e consenso da comunidade m\u00e9dica a terapia poder\u00e1 ser considerada segura e eficaz. At\u00e9 l\u00e1, o uso deve permanecer restrito a estudos autorizados, com consentimento informado e acompanhamento rigoroso dos pacientes.<\/p>\n<p>A Anvisa j\u00e1 aprovou o in\u00edcio de um estudo cl\u00ednico oficial previsto para mar\u00e7o. Caso as tr\u00eas fases de testes sejam bem-sucedidas, a expectativa \u00e9 que a polilaminina possa se tornar dispon\u00edvel para uso mais amplo nos pr\u00f3ximos anos.<\/p>\n<p><bsp-list-loadmore class=\"PageListStandardG\" data-module=\"\" data-show-loadmore=\"true\" data-list-title-size=\"3\" data-list-description-size=\"3\"><\/p>\n<p>    <a class=\"AnchorLink\" title=\"leia-tambem\" name=\"leia-tambem\"\/><\/p>\n<p><\/bsp-list-loadmore><\/p><\/div>\n<p><script>\n  window.fbAsyncInit = function() {\n      FB.init({\n              appId : '1447052969554341',\n          xfbml : true,\n          version : 'v2.9'\n      });\n  };\n  (function(d, s, id){\n     var js, fjs = d.getElementsByTagName(s)[0];\n     if (d.getElementById(id)) {return;}\n     js = d.createElement(s); js.id = id;\n     js.src = \"https:\/\/connect.facebook.net\/en_US\/sdk.js\";\n     fjs.parentNode.insertBefore(js, fjs);\n   }(document, 'script', 'facebook-jssdk'));\n<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Um estudo brasileiro iniciado h\u00e1 cerca de 30 anos investiga a polilaminina como uma poss\u00edvel estrat\u00e9gia para restaurar fun\u00e7\u00f5es perdidas ap\u00f3s les\u00f5es graves na medula espinhal. Desenvolvida por pesquisadores da Universidade Federal do Rio de Janeiro (UFRJ), a subst\u00e2ncia vem apresentando resultados iniciais, mas ainda depende de valida\u00e7\u00e3o em ensaios cl\u00ednicos mais amplos para comprovar&#8230;<\/p>\n","protected":false},"author":2,"featured_media":31466,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31465","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sem-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>estudo brasileiro aponta avan\u00e7o na recupera\u00e7\u00e3o de les\u00f5es medulares -<\/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:\/\/oficialnoticias.com\/?p=31465\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"estudo brasileiro aponta avan\u00e7o na recupera\u00e7\u00e3o de les\u00f5es medulares -\" \/>\n<meta property=\"og:description\" content=\"Um estudo brasileiro iniciado h\u00e1 cerca de 30 anos investiga a polilaminina como uma poss\u00edvel estrat\u00e9gia para restaurar fun\u00e7\u00f5es perdidas ap\u00f3s les\u00f5es graves na medula espinhal. Desenvolvida por pesquisadores da Universidade Federal do Rio de Janeiro (UFRJ), a subst\u00e2ncia vem apresentando resultados iniciais, mas ainda depende de valida\u00e7\u00e3o em ensaios cl\u00ednicos mais amplos para comprovar...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/oficialnoticias.com\/?p=31465\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-23T17:00:13+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-23T17:00:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/oficialnoticias.com\/wp-content\/uploads\/2026\/02\/urlhttps3A2F2Fk2-prod-radio-itatiaia.s3.us-east-1.amazonaws.com2Fbrightspot2Ff22F7a2Fb6862e.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Luana Gon\u00e7alves\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" 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