{"id":4136,"date":"2022-05-05T10:00:00","date_gmt":"2022-05-05T10:00:00","guid":{"rendered":"https:\/\/modernsciences.org\/staging\/4414\/?p=4136"},"modified":"2022-04-21T07:15:27","modified_gmt":"2022-04-21T07:15:27","slug":"als-is-only-50-genetic-identifying-dna-regions-affected-by-lifestyle-and-environmental-risk-factors-could-help-pinpoint-avenues-for-treatment","status":"publish","type":"post","link":"https:\/\/modernsciences.org\/staging\/4414\/als-is-only-50-genetic-identifying-dna-regions-affected-by-lifestyle-and-environmental-risk-factors-could-help-pinpoint-avenues-for-treatment\/","title":{"rendered":"ALS is only 50% genetic \u2013 identifying DNA regions affected by lifestyle and environmental risk factors could help pinpoint avenues for treatment"},"content":{"rendered":"\n  <figure>\n    <img  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/456422\/original\/file-20220405-14-ks7fbg.png?ixlib=rb-1.1.0&#038;rect=0%2C0%2C2309%2C1299&#038;q=45&#038;auto=format&#038;w=754&#038;fit=clip\" >\n      <figcaption>\n        Epigenetics is how behavior and environment affect gene expression.\n        <span class=\"attribution\"><a class=\"source\" href=\"https:\/\/www.gettyimages.com\/detail\/photo\/the-dna-spiral-royalty-free-image\/1293534045\" target=\"_blank\" rel=\"noopener\">Iryna Dobytchina\/iStock via Getty Images Plus<\/a><\/span>\n      <\/figcaption>\n  <\/figure>\n\n<span><a href=\"https:\/\/theconversation.com\/profiles\/ramona-zwamborn-1319503\" target=\"_blank\" rel=\"noopener\">Ramona Zwamborn<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jan-veldink-1334652\" target=\"_blank\" rel=\"noopener\">Jan Veldink<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em>, and <a href=\"https:\/\/theconversation.com\/profiles\/paul-j-hop-1319478\" target=\"_blank\" rel=\"noopener\">Paul J. Hop<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em><\/span>\n\n<p><a href=\"https:\/\/medlineplus.gov\/amyotrophiclateralsclerosis.html\" target=\"_blank\" rel=\"noopener\">Amyotrophic lateral sclerosis<\/a> is a devastating neurodegenerative disease that affects about <a href=\"https:\/\/dx.doi.org\/10.1038%2Fncomms12408\" target=\"_blank\" rel=\"noopener\">1 in 50,000 people<\/a>. Well-known people who suffered from ALS include baseball player <a href=\"https:\/\/www.als.org\/understanding-als\/lou-gehrig\" target=\"_blank\" rel=\"noopener\">Lou Gehrig<\/a>, who lived two years after he was diagnosed, and scientist <a href=\"https:\/\/www.nbcnews.com\/health\/health-care\/stephen-hawking-had-als-55-years-how-did-he-do-n857006\" target=\"_blank\" rel=\"noopener\">Stephen Hawking<\/a>, who lived for an extraordinary 55 years after his diagnosis. While the severity and speed of disease progression <a href=\"https:\/\/www.als.org\/understanding-als\" target=\"_blank\" rel=\"noopener\">vary from person to person<\/a>, most people with ALS die within two to five years after diagnosis. <a href=\"https:\/\/www.ninds.nih.gov\/Disorders\/Patient-Caregiver-Education\/Fact-Sheets\/Amyotrophic-Lateral-Sclerosis-ALS-Fact-Sheet\" target=\"_blank\" rel=\"noopener\">No effective therapy<\/a> currently exists.<\/p>\n\n<p>Little is known about what causes or increases someone\u2019s risk of developing ALS. Researchers think it\u2019s only <a href=\"https:\/\/doi.org\/10.1001\/jamaneurol.2019.2044\" target=\"_blank\" rel=\"noopener\">around 50% genetic<\/a>, indicating that there are strong environmental and lifestyle risk factors affecting disease development. But very few of these risk factors have been identified.<\/p>\n\n<p><a href=\"https:\/\/www.researchgate.net\/profile\/Ramona-Zwamborn-2\" target=\"_blank\" rel=\"noopener\">We<\/a> <a href=\"https:\/\/www.researchgate.net\/profile\/Paul-Hop-2\" target=\"_blank\" rel=\"noopener\">are<\/a> <a href=\"https:\/\/www.researchgate.net\/scientific-contributions\/Jan-H-Veldink-39091027\" target=\"_blank\" rel=\"noopener\">a<\/a> team of <a href=\"https:\/\/www.projectmine.com\/country\/the-nederlands\/\" target=\"_blank\" rel=\"noopener\">neuroscientists<\/a> with a special interest in <a href=\"https:\/\/medlineplus.gov\/genetics\/understanding\/howgeneswork\/epigenome\/\" target=\"_blank\" rel=\"noopener\">epigenetics<\/a>, the study of how the environment influences DNA. By examining the epigenetics of ALS, we found that differences in metabolism, cholesterol and immunity may play a role in disease progression.<\/p>\n\n<figure>\n            <iframe loading=\"lazy\" width=\"440\" height=\"260\" src=\"https:\/\/www.youtube.com\/embed\/xrIjFVMliOQ?wmode=transparent&amp;start=0\" frameborder=\"0\" allowfullscreen=\"\"><\/iframe>\n            <figcaption><span class=\"caption\">ALS involves the progressive degeneration of the neurons involved in muscle movement.<\/span><\/figcaption>\n          <\/figure>\n\n<h2 id=\"nongenetic-risk-factors\">Nongenetic risk factors<\/h2>\n\n<p>Epigenetics opens a window into the role environmental factors play in genetic diseases like ALS. One common type of epigenetic mechanism is <a href=\"https:\/\/doi.org\/10.1007\/978-1-61779-612-8_23\" target=\"_blank\" rel=\"noopener\">DNA methylation<\/a>, an on-off switch for certain regions of DNA that shift throughout a person\u2019s lifetime. The ways these on-off patterns change are known to be shaped by environmental and lifestyle factors.<\/p>\n\n<p>To unravel how DNA methylation affects ALS, we analyzed DNA samples and lifestyle questionnaire responses from almost 10,000 patients with and without ALS. This data was collected by <a href=\"https:\/\/www.projectmine.com\/\" target=\"_blank\" rel=\"noopener\">Project MinE<\/a>, an international initiative creating a database of the genetic profiles of ALS patients. <\/p>\n\n<p>We discovered <a href=\"http:\/\/dx.doi.org\/10.1126\/scitranslmed.abj0264\" target=\"_blank\" rel=\"noopener\">differences in methylation<\/a> patterns between people with ALS and people without ALS in 45 DNA regions. When we examined the specific genes located in these areas, we found that people with ALS mainly showed differences in methylation on genes that play a role in metabolism, cholesterol production and immunity. These findings support a recent <a href=\"https:\/\/doi.org\/10.1038\/s41588-021-00973-1\" target=\"_blank\" rel=\"noopener\">Project MinE study<\/a> that showed a causal link between high cholesterol levels and ALS.<\/p>\n\n<p>Our team also examined DNA methylation patterns that reflect exposure to certain environmental or lifestyle factors (such as smoking or high body mass index), or biological processes (such as aging). Even after controlling for the effects of these other common risk factors, we found that metabolism, cholesterol and immunity were still associated with ALS.<\/p>\n\n<p>Changes in methylation patterns for multiple DNA regions, and especially those related to immune processes, were also associated with survival rates for people living with ALS.<\/p>\n\n<figure class=\"align-center zoomable\">\n            <a href=\"https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip\" target=\"_blank\" rel=\"noopener\"><img  decoding=\"async\"  alt=\"Diagram of DNA methylation and histone modification\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-ls-sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\"  data-pk-src=\"https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\"  data-pk-srcset=\"https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=408&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=408&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=408&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=513&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=513&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/456406\/original\/file-20220405-14-p1qj70.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=513&amp;fit=crop&amp;dpr=3 2262w\" ><\/a>\n            <figcaption>\n              <span class=\"caption\">Environmental factors can affect genetic material through an epigenetic mechanism that involves methyl groups tagging DNA to turn it on or off.<\/span>\n              <span class=\"attribution\"><a class=\"source\" href=\"http:\/\/commonfund.nih.gov\/epigenomics\/figure\" target=\"_blank\" rel=\"noopener\">National Institutes of Health<\/a><\/span>\n            <\/figcaption>\n          <\/figure>\n\n<h2 id=\"next-steps\">Next steps<\/h2>\n\n<p>Currently, no cure exists for this devastating and deadly disease. Our study helps clarify the biological processes that underlie ALS risk factors and disease progression, and could potentially be used to develop new treatments or preventive interventions.<\/p>\n\n<p>It is important to emphasize, however, that the epigenetic differences between people with and without ALS that we found were small. Our study also doesn\u2019t prove that changes in genes involved in metabolism, cholesterol production or immunity cause or are influenced by ALS. More research is needed before physicians can confidently recommend lifestyle changes to help cut the risk of ALS.<\/p>\n\n[<em>Get fascinating science, health and technology news.<\/em> <a href=\"https:\/\/memberservices.theconversation.com\/newsletters\/?nl=science&amp;source=inline-science-fascinating\" target=\"_blank\" rel=\"noopener\">Sign up for The Conversation\u2019s weekly science newsletter<\/a>.]<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img  loading=\"lazy\"  decoding=\"async\"  src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAP+KeNJXAAAAAXRSTlMAQObYZgAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=\"  alt=\"The Conversation\"  width=\"1\"  height=\"1\"  style=\"border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important\"  class=\" pk-lazyload\"  data-pk-sizes=\"auto\"  data-pk-src=\"https:\/\/counter.theconversation.com\/content\/179169\/count.gif?distributor=republish-lightbox-basic\" ><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https:\/\/theconversation.com\/republishing-guidelines --><\/p>\n\n<p><span><a href=\"https:\/\/theconversation.com\/profiles\/ramona-zwamborn-1319503\" target=\"_blank\" rel=\"noopener\">Ramona Zwamborn<\/a>, PhD candidate in Neurogenetics, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jan-veldink-1334652\" target=\"_blank\" rel=\"noopener\">Jan Veldink<\/a>, Professor of Neurology and Neurogenetics, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em>, and <a href=\"https:\/\/theconversation.com\/profiles\/paul-j-hop-1319478\" target=\"_blank\" rel=\"noopener\">Paul J. Hop<\/a>, PhD candidate in Neurogenetics, <em><a href=\"https:\/\/theconversation.com\/institutions\/utrecht-university-1354\" target=\"_blank\" rel=\"noopener\">Utrecht University<\/a><\/em><\/span><\/p>\n\n<p>This article is republished from <a href=\"https:\/\/theconversation.com\" target=\"_blank\" rel=\"noopener\">The Conversation<\/a> under a Creative Commons license. Read the <a href=\"https:\/\/theconversation.com\/als-is-only-50-genetic-identifying-dna-regions-affected-by-lifestyle-and-environmental-risk-factors-could-help-pinpoint-avenues-for-treatment-179169\" target=\"_blank\" rel=\"noopener\">original article<\/a>.<\/p>\n\n","protected":false},"excerpt":{"rendered":"Epigenetics is how behavior and environment affect gene expression. Iryna Dobytchina\/iStock via Getty Images Plus Ramona Zwamborn, Utrecht&hellip;\n","protected":false},"author":49,"featured_media":4137,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[12],"tags":[523,294,474],"class_list":{"0":"post-4136","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-health-and-body","8":"tag-als","9":"tag-dna","10":"tag-the-conversation","11":"cs-entry","12":"cs-video-wrap"},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/users\/49"}],"replies":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/comments?post=4136"}],"version-history":[{"count":1,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4136\/revisions"}],"predecessor-version":[{"id":4138,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/posts\/4136\/revisions\/4138"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media\/4137"}],"wp:attachment":[{"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/media?parent=4136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/categories?post=4136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/modernsciences.org\/staging\/4414\/wp-json\/wp\/v2\/tags?post=4136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}