{"id":1893,"date":"2011-07-01T12:05:31","date_gmt":"2011-07-01T11:05:31","guid":{"rendered":"http:\/\/blogs.funiber.org\/pt\/?p=1893"},"modified":"2011-07-12T03:51:32","modified_gmt":"2011-07-12T02:51:32","slug":"presenca-de-hdl-nao-protege-o-coracao","status":"publish","type":"post","link":"https:\/\/www.funiber.blog\/pt\/saude-e-nutricao\/2011\/07\/01\/presenca-de-hdl-nao-protege-o-coracao","title":{"rendered":"Presen\u00e7a de HDL n\u00e3o protege o cora\u00e7\u00e3o"},"content":{"rendered":"<p style=\"text-align: justify\"><a href=\"http:\/\/blogs.funiber.org\/nutricao\/files\/2011\/07\/colesterol.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-thumbnail wp-image-713\" src=\"http:\/\/blogs.funiber.org\/nutricao\/files\/2011\/07\/colesterol-e1310439066806-150x150.jpg\" alt=\"\" width=\"150\" height=\"150\" \/><\/a>O Dr. Daniel Reader, diretor do departamento de cardiologia preventiva da Universidade da Pensilv\u00e2nia descobriu que possuir altos n\u00edveis de lipoprote\u00edna de alta densidade (HDL) n\u00e3o protege o cora\u00e7\u00e3o. O que realmente importa \u00e9 saber se o HDL funciona de forma efetiva no organismo do paciente, pois o HDL n\u00e3o funciona com a mesma efetividade em todas as pessoas. At\u00e9 agora possuir baixos n\u00edveis de HDL era considerado como um ricos para enfermidades card\u00edacas. O HDL funciona no organismo como um ve\u00edculo condutor que acumula o colesterol daninho e o transporta para o f\u00edgado, onde o organismo \u00e9 capaz de elimin\u00e1-lo.<\/p>\n<p style=\"text-align: justify\"><!--more-->No ano de 2006, suspendeu-se um ensaio com torcetrapib, um f\u00e1rmaco que elevava os n\u00edveis de colesterol HDL com a finalidade de reduzir o colesterol nocivo, mas descobriu-se que as pessoas que tomavam este medicamento teriam maior risco de padecer de um ataque card\u00edaco e morrer. Este ensaio indicou aos pesquisadores que a redu\u00e7\u00e3o do colesterol nocivo n\u00e3o teria rela\u00e7\u00e3o com a quantidade de HDL, mas sim poderia ter rela\u00e7\u00e3o com a efetividade do mesmo para poder derivar o colesterol daninho para o f\u00edgado.<\/p>\n<p style=\"text-align: justify\">Reader e seus colegas realizaram um estudo em que se tomou mostras de sangue de alguns pacientes e mediram a espessura das paredes dos vasos sangu\u00edneos da car\u00f3tida entre 203 pessoas saud\u00e1veis. Uma maior espessura da car\u00f3tida est\u00e1 diretamente relacionado a um maior risco de doen\u00e7a card\u00edaca.<\/p>\n<p style=\"text-align: justify\">No ensaio se separou o HDL do sangue dos pacientes e se aplicou a macr\u00f3fagos em ratos. Os macr\u00f3fagos s\u00e3o gl\u00f3bulos brancos que eliminam micr\u00f3bios invasores e absorvem o colesterol nocivo, mas no processo contribuem para a forma\u00e7\u00e3o de placas nas paredes arteriais. As pessoas cujo HDL foi mais eficiente ao eliminar o colesterol dos macr\u00f3fagos teriam uma car\u00f3tida mais livre, limpa, portando \u201ca fun\u00e7\u00e3o do HDL fou um precursor ainda melhor da espessura das paredes da car\u00f3tida que o n\u00edvel de HDL mesmo\u201d, indicou Reader.<\/p>\n<p style=\"text-align: justify\">Em outro estudo em que se comparou a fun\u00e7\u00e3o do HDL de 442 pessoas que foram submetidas a opera\u00e7\u00e3o por obstru\u00e7\u00e3o de art\u00e9rias e outras 351 pessoas que n\u00e3o teriam doen\u00e7as card\u00edacas, conseguiu-se determinar que as pessoas com obstru\u00e7\u00f5es nas art\u00e9rias teriam um HDL com capacidade inferior para ajudar na elimina\u00e7\u00e3o do colesterol nocivo.<\/p>\n<p style=\"text-align: justify\">O Dr. Robert Eckel, ex-presidente da American Heart Association, indica que estes achados n\u00e3o indicam que o HDL elevado n\u00e3o ajuda, pois as pessoas que tem n\u00edveis elevados de HDL, usualmente tamb\u00e9m tem uma melhor fun\u00e7\u00e3o.<\/p>\n<p style=\"text-align: justify\">Com estes achados, os n\u00edveis de HDL se tornam, de certo ponto de vista, irrelevantes, pois o mais importante \u00e9 identificar a efetividade do HDL para remover o colesterol nocivo, mas pelo momento n\u00e3o h\u00e1 uma prova que sirva para identificar a fun\u00e7\u00e3o do HDL e \u00e9 muito prov\u00e1vel que n\u00e3o se desenvolva uma prova deste tipo no curto prazo.<\/p>\n<p style=\"text-align: justify\">\n<h5 style=\"text-align: justify\"><span style=\"color: #888888\">Fonte: <a href=\"http:\/\/www.intramed.net\/contenidover.asp?contenidoID=69222\">El colesterol HDL elevado por s\u00ed mismo podr\u00eda no proteger el coraz\u00f3n<\/a><\/span><\/h5>\n<p style=\"text-align: justify\">\n<p style=\"text-align: justify\">\n","protected":false},"excerpt":{"rendered":"<p>O Dr. Daniel Reader, diretor do departamento de cardiologia preventiva da Universidade da Pensilv\u00e2nia descobriu que possuir altos n\u00edveis de lipoprote\u00edna de alta densidade (HDL) n\u00e3o protege o cora\u00e7\u00e3o. O que realmente importa \u00e9 saber se o HDL funciona de forma efetiva no organismo do paciente, pois o HDL n\u00e3o funciona com a mesma efetividade [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_newsletter_tier_id":0,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[3],"tags":[],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Presen\u00e7a de HDL n\u00e3o protege o cora\u00e7\u00e3o - FuniBlogs - FUNIBER<\/title>\n<meta name=\"robots\" content=\"noindex, nofollow\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Presen\u00e7a de HDL n\u00e3o protege o cora\u00e7\u00e3o - FuniBlogs - FUNIBER\" \/>\n<meta property=\"og:description\" content=\"O Dr. Daniel Reader, diretor do departamento de cardiologia preventiva da Universidade da Pensilv\u00e2nia descobriu que possuir altos n\u00edveis de lipoprote\u00edna de alta densidade (HDL) n\u00e3o protege o cora\u00e7\u00e3o. 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