{"id":3203,"date":"2023-01-12T15:18:58","date_gmt":"2023-01-12T05:18:58","guid":{"rendered":"https:\/\/wimr.org.au\/?post_type=wimr_news&#038;p=3203"},"modified":"2024-09-30T18:26:39","modified_gmt":"2024-09-30T08:26:39","slug":"scientists-find-way-to-heal-scars-caused-by-heart-attacks","status":"publish","type":"news","link":"https:\/\/wimr.org.au\/news\/scientists-find-way-to-heal-scars-caused-by-heart-attacks\/","title":{"rendered":"Scientists find way to heal scars caused by heart attacks"},"content":{"rendered":"<p class=\"lead\">For the first time, an international team of researchers has developed a method to reverse the loss of elasticity of damaged heart tissue following heart attacks.<\/p>\n<p>After a heart attack, the shock of the event leaves behind a trail of damaged heart muscle,<br \/>\nwhich becomes a scar over time. However, the scar tissue doesn\u2019t have the elasticity and<br \/>\nflexibility of healthy heart muscle, meaning there can be complications with pumping and<br \/>\ntransporting blood.<\/p>\n<p>For the first time, an international team of researchers has developed a method to reverse<br \/>\nthe loss of elasticity of damaged heart tissue following heart attacks.<\/p>\n<p>Heart disease is currently the largest cause of death globally.<\/p>\n<p>Preclinical studies found a single injection of tropoelastin into the wall of the heart in<br \/>\nthe days following a heart attack could \u2018turn back the clock\u2019 on muscle damage, making the<br \/>\nscars \u2018stretchier\u2019 and help improve the heart\u2019s ability to contract.<\/p>\n<p>Tropoelastin is the protein building block that gives human tissue its elasticity and ability to<br \/>\nstretch.<\/p>\n<p>The results are published in\u00a0<em>Circulation Research<\/em>\u00a0and is the first time this potential of<br \/>\ntropoelastin in treating heart disease has been investigated.<\/p>\n<div><img decoding=\"async\" class=\"aligncenter\" src=\"\/wp-content\/uploads\/2024\/09\/Figure5edit-forMR_1.jpg\" alt=\"\" width=\"222\" height=\"139\" \/><\/div>\n<p><small><em>IMAGE: Cross section of heart muscle sample. After the heart attack, it leaves behind scar made of collagen (pink). After tropoelastin is given, there is increased elastin (purple), which makes the scar less stiff and more flexible.<\/em><\/small><\/p>\n<p>\u201cThis research showcases the potential of tropoelastin in heart repair and suggest further<br \/>\nwork will show exciting possibilities of its role in future treatments and therapies,\u201d says lead<br \/>\nresearcher Dr Robert Hume who conducted the research at the Westmead Institute for<br \/>\nMedical Research (WIMR). Dr Hume is currently based at the University of Sydney\u2019s Charles Perkins<br \/>\nCentre.<\/p>\n<p><strong>Repairing tissue damage from heart attacks<\/strong><br \/>\nFour days after a heart attack, purified tropoelastin was injected into the heart.<br \/>\nCo-author Professor Anthony Weiss from the Charles Perkins Centre and Faculty of Science<br \/>\nexplained: \u201cTropoelastin can repair the heart because it is a precise replica of the body\u2019s natural elastic protein.\u201d<\/p>\n<p>For this injection, the researchers used a new surgical method utilising ultrasound to guide<br \/>\nthe needle into the heart wall, which is less invasive than previous methods.<\/p>\n<div><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter\" src=\"\/wp-content\/uploads\/2024\/09\/Heart-Scar-hume-Figure2Bedit-forMR.jpg\" alt=\"\" width=\"444\" height=\"139\" \/><\/div>\n<h5 class=\"AlignCenter\"><small><em>IMAGE: Echocardiography of the heart wall. LVAW is the section after a heart attack and shows scarring damage compared to LVPW which is healthy. Tropoelastin was given 4 days after a heart attack, then the heart recovered as shown by the wave-like patterns.\u00a0<\/em><\/small><\/h5>\n<p>After 28 days the researchers found the heart muscle, originally damaged and scarred at<br \/>\nthe beginning, regained its elasticity and resembled muscle function similar to before the<br \/>\nheart attack.<\/p>\n<p>Further tests found tropoelastin reduced scar size and essentially stabilises it by increasing<br \/>\nits elastin content and therefore decreasing the stiffness of the scar.<\/p>\n<p>Additional experiments on human cardiac fibroblasts (a subset of human heart cells<br \/>\nresponsible for maintaining the structure of a normal heart), in a petri dish showed after the<br \/>\ncells were treated with tropoelastin, they were able to generate elastin.<\/p>\n<p>Elastin is a crucial protein that gives human tissue elasticity and the ability to stretch.<br \/>\n\u201cWhat we have found is highly encouraging,\u201d says senior author, WIMR&#8217;s Associate Professor James<br \/>\nChong.<\/p>\n<p>\u201cWe hope to continue developing the method so it can eventually be used in a clinical setting<br \/>\nand used to treat and improve the lives of the millions of heart failure patients worldwide.\u201d<\/p>\n<p>Watch the 9 News report about this research here:\u00a0<a href=\"https:\/\/bit.ly\/3X6vLZF\" target=\"_blank\" rel=\"noopener\">https:\/\/bit.ly\/3X6vLZF<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For the first time, an international team of researchers has developed a method to reverse the loss of elasticity of damaged heart tissue following heart attacks. After a heart attack, the shock of the event leaves behind a trail of damaged heart muscle, which becomes a scar over time. However, the scar tissue doesn\u2019t have [&hellip;]<\/p>\n","protected":false},"featured_media":3204,"parent":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"categories":[19],"class_list":["post-3203","news","type-news","status-publish","has-post-thumbnail","hentry","category-cat-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/news\/3203","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/news"}],"about":[{"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/types\/news"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/media\/3204"}],"wp:attachment":[{"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/media?parent=3203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wimr.org.au\/wp-json\/wp\/v2\/categories?post=3203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}