{"id":9005,"date":"2013-01-08T00:01:11","date_gmt":"2013-01-08T04:01:11","guid":{"rendered":"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=9005"},"modified":"2013-01-08T10:20:43","modified_gmt":"2013-01-08T14:20:43","slug":"researchers-find-further-proof-of-a-link-between-pesticides-and-parkinsons","status":"publish","type":"post","link":"https:\/\/beyondpesticides.org\/dailynewsblog\/2013\/01\/researchers-find-further-proof-of-a-link-between-pesticides-and-parkinsons\/","title":{"rendered":"Researchers Find Further Proof of a Link between Pesticides and Parkinson\u2019s"},"content":{"rendered":"<p>(Beyond Pesticides, January 8, 2013) Neurologists at the University of California, Los Angeles (UCLA) have published their latest research linking pesticide exposure to <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?cat=145\">Parkinson\u2019s disease<\/a>. Appearing in the <a href=\"http:\/\/www.pnas.org\/content\/early\/2012\/12\/19\/1220399110.full.pdf+html?sid=077822b9-ed5e-4e79-998f-7653b2212ebe\">online edition of <em>PNAS<\/em><\/a>, the UCLA scientists\u2019 work details the series of events that can occur after individuals are exposed to the pesticide <a href=\"https:\/\/www.beyondpesticides.org\/gateway\/index.php?pesticideid=10\">benomyl<\/a>, which was phased out in 2001. Researchers believe their findings on the series of events the pesticide sets in motion could be applicable even to Parkinson\u2019s patients who have not been exposed to benomyl.<\/p>\n<p>According to scientists, exposure to benomyl prevents the enzyme aldehyde dehydrogenase (ALDH) from keeping in check a naturally occurring toxin in the brain called 3,4-Dihydroxyphenylacetaldehyde (DOPAL). Without ALDH regulating DOPAL, the toxin accumulates, damages neurons, and increases an individual\u2019s risk of developing Parkinson\u2019s disease. Researchers postulate that this process may be occurring in people with Parkinson\u2019s who were never exposed to pesticides. The findings of this research provide insight into possible treatments to slow the disease, such as developing new drugs to protect ALDH activity.<\/p>\n<p>Although the exact cause of Parkinson\u2019s is still unknown, until this research scientists were focusing in on the protein a-synuclein as a pathway to the disease. The protein, present in all Parkinson\u2019s patients, is thought to create the conditions for Parkinson\u2019s when it binds together and becomes toxic, killing neurons in the brain.<\/p>\n<p>Parkinson\u2019s is the second most common neurodegenerative disease, affecting one to two percent of people over the age of 65. Parkinson\u2019s disease occurs when nerve cells in the substantia nigra region of the brain are damaged or destroyed and can no longer produce dopamine, a nerve-signaling molecule that helps control muscle movement. Often by the time Parkinson&#8217;s symptoms manifest themselves, more than half of these molecules, known as dopaminergic neurons, have already been lost.<\/p>\n<p>People with Parkinson\u2019s have a variety of symptoms, including loss of muscle control, temors, sluggish movement, muscle stiffness, and lack of coordination. They may also experience anxiety, constipation, dementia, depression, urinary difficulties, and sleep disturbances. Over time, symptoms intensify. At least one million Americans have Parkinson\u2019s and about 50,000 new cases are diagnosed each year. Although medical treatments may improve symptoms, there are none that can slow down or halt the progression of the disease.<\/p>\n<p>While certain genetic variations may cause an inherited form of Parkinson\u2019s, lead author of the study Arthur G Fitzmaurice, Ph.D. \u00a0notes that that only a small fraction of the disease can be blamed on genes. &#8220;As a result, environmental factors almost certainly play an important role in this disorder. Understanding the relevant mechanisms \u201d\u201d particularly what causes the selective loss of dopaminergic neurons \u201d\u201d may provide important clues to explain how the disease develops,&#8221; Dr. Fitzmaurice explains.<\/p>\n<p><a href=\"https:\/\/www.beyondpesticides.org\/health\/parkinsonsdisease.php\">Previous studies<\/a> have linked the pesticides <a href=\"https:\/\/www.beyondpesticides.org\/gateway\/pesticide\/paraquat.htm\">paraquat<\/a>, <a href=\"https:\/\/www.beyondpesticides.org\/gateway\/pesticide\/maneb.htm\">maneb<\/a>, <a href=\"https:\/\/www.beyondpesticides.org\/gateway\/pesticide\/rotenone.htm\">rotenone<\/a>, and <a href=\"https:\/\/www.beyondpesticides.org\/gateway\/index.php?pesticideid=81\">ziram<\/a> to increased incidences of Parkinson\u2019s disease.<\/p>\n<p>Pesticides are long suspected of being tied to Parkinson\u2019s, at least in part, because of the high rate of the disease among farmworkers. Farmworkers have nearly double the risk for the disease if exposed to pesticides, with a dose-effect for the number of years of exposure. However, even individuals who simply lived near agricultural fields are at risk. Exposure to the pesticides, paraquat and maneb, within 500 meters of an individual\u2019s home, has been shown to <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=1427\">increase the risk<\/a> of developing Parkinson\u2019s by 75 percent, according to a University of California, Berkeley study. The Institute of Medicine (IOM) found <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=2164\">suggestive but limited evidence<\/a> that exposure to Agent Orange and other herbicides used during the Vietnam War is associated with an increased chance of developing ischemic heart disease and Parkinson\u2019s disease in Vietnam veterans. Another publication found that rural residents who drank <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=2212\">contaminated well water<\/a> had an increased (up to 90 percent) risk of developing Parkinson\u2019s. French researchers also found that among men exposed to pesticides such as DDT, carriers of the gene variants are three and a half times <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=3741\">more likely to develop<\/a> Parkinson\u2019s than those with the more common version of the gene.<\/p>\n<p>Last year, researchers at the University of Missouri School of Medicine took some of the first steps toward <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=5525\">understanding the link<\/a> between pesticides and Parkinson\u2019s, and unraveling the molecular dysfunction that occurs when proteins are exposed to environmental toxicants. UCLA\u2019s earlier research, published in November 2012 found that exposure to pesticides and suffering a head injury are associated with a <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=8554\">three-fold increase<\/a> in one\u2019s chances of developing Parkinson\u2019s disease.<\/p>\n<p>Senior author of the new study Jeff Bronstein, M.D., Ph.D. \u00a0notes, &#8220;We&#8217;ve known that in animal models and cell cultures, agricultural pesticides trigger a neurodegenerative process that leads to Parkinson&#8217;s. And epidemiologic studies have consistently shown the disease occurs at high rates among farmers and in rural populations. Our work reinforces the hypothesis that pesticides may be partially responsible, and the discovery of this new pathway may be a new avenue for developing therapeutic drugs.&#8221;<\/p>\n<p>Registrants of the pesticide benomyl <a href=\"http:\/\/www.epa.gov\/oppsrrd1\/REDs\/benomyl_red.pdf\">voluntarily cancelled<\/a> their Environmental Protection Agency (EPA) registration in 2001, with all sales and distribution of benomyl products ending in 2002. Both benomyl and its primary metabolite carbendazim (MBC) (which was illegally found in <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=6619\">incoming shipments of orange juice<\/a> from Brazil to the U.S. early last year) are of toxicological concern. Studies show benomyl and MBC to be teratogenic (causing birth defects), and both are considered possible human carcinogens by EPA.<\/p>\n<p>Studies like these demonstrate the long-lasting toxicological effects that can result from pesticide use, even after the chemical has been removed from the marketplace. A 2006 study <a href=\"https:\/\/www.beyondpesticides.org\/news\/daily_news_archive\/2006\/09_22_06.php\">linked<\/a> low-level but still environmentally relevant levels of the pesticide <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?cat=27\">dieldrin<\/a>, banned in 1987, to the onset of Parkinson\u2019s disease. Dieldrin still exists in the environment, and was discovered as recently as July of <a href=\"https:\/\/www.beyondpesticides.org\/dailynewsblog\/?p=7654\">last year<\/a> at levels above what EPA considers acceptable in the private wells of many Connecticut residents. For additional information on how EPA ignores toxic exposures in its risk assessment process for approving pesticides, see Beyond Pesticides\u2019 article <a href=\"https:\/\/www.beyondpesticides.org\/infoservices\/pesticidesandyou\/Winter%2005-06\/blindfold.pdf\">Taking Off the Blindfold<\/a> published in the Winter 2006 issue of <em>Pesticides and You<\/em>.<\/p>\n<p>For more information on the latest research linking pesticides and Parkinson\u2019s disease, see Beyond Pesticides\u2019 <a href=\"https:\/\/www.beyondpesticides.org\/health\/parkinsonsdisease.php\">Pesticide Induced Diseases Database (PIDD)<\/a>, or read the <a href=\"https:\/\/www.beyondpesticides.org\/infoservices\/pesticidesandyou\/Spring%202008\/parkinsonscited.pdf\">Parkinson&#8217;s Disease article<\/a> from the Spring 2008 issue of <em>Pesticides and You<\/em>.<\/p>\n<p><em>Source:<\/em> <a href=\"http:\/\/newsroom.ucla.edu\/portal\/ucla\/pesticides-and-parkinson-s-more-242364.aspx\">UCLA Newsroom<\/a><\/p>\n<p><em>All unattributed positions and opinions in this piece are those of Beyond Pesticides.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(Beyond Pesticides, January 8, 2013) Neurologists at the University of California, Los Angeles (UCLA) have published their latest research linking pesticide exposure to Parkinson\u2019s disease. Appearing in the online edition of PNAS, the UCLA scientists\u2019 work details the series of events that can occur after individuals are exposed to the pesticide benomyl, which was phased out in 2001. Researchers believe their findings on the series of events the pesticide sets in motion could be applicable even to Parkinson\u2019s patients who have not been exposed to benomyl. According to scientists, exposure to benomyl prevents the enzyme aldehyde dehydrogenase (ALDH) from keeping in check a naturally occurring toxin in the brain called 3,4-Dihydroxyphenylacetaldehyde (DOPAL). Without ALDH regulating DOPAL, the toxin accumulates, damages neurons, and increases an individual\u2019s risk of developing Parkinson\u2019s disease. Researchers postulate that this process may be occurring in people with Parkinson\u2019s who were never exposed to pesticides. The findings of this research provide insight into possible treatments to slow the disease, such as developing new drugs to protect ALDH activity. Although the exact cause of Parkinson\u2019s is still unknown, until this research scientists were focusing in on the protein a-synuclein as a pathway to the disease. The protein, present [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[251,21,3,145],"tags":[],"class_list":["post-9005","post","type-post","status-publish","format-standard","hentry","category-benomyl","category-chemicals","category-diseasehealth-effects","category-parkinsons"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Researchers Find Further Proof of a Link between Pesticides and Parkinson\u2019s - Beyond Pesticides Daily News Blog<\/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:\/\/beyondpesticides.org\/dailynewsblog\/2013\/01\/researchers-find-further-proof-of-a-link-between-pesticides-and-parkinsons\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers Find Further Proof of a Link between Pesticides and Parkinson\u2019s - Beyond Pesticides Daily News Blog\" \/>\n<meta property=\"og:description\" content=\"(Beyond Pesticides, January 8, 2013) Neurologists at the University of California, Los Angeles (UCLA) have published their latest research linking pesticide exposure to Parkinson\u2019s disease. Appearing in the online edition of PNAS, the UCLA scientists\u2019 work details the series of events that can occur after individuals are exposed to the pesticide benomyl, which was phased out in 2001. Researchers believe their findings on the series of events the pesticide sets in motion could be applicable even to Parkinson\u2019s patients who have not been exposed to benomyl. According to scientists, exposure to benomyl prevents the enzyme aldehyde dehydrogenase (ALDH) from keeping in check a naturally occurring toxin in the brain called 3,4-Dihydroxyphenylacetaldehyde (DOPAL). Without ALDH regulating DOPAL, the toxin accumulates, damages neurons, and increases an individual\u2019s risk of developing Parkinson\u2019s disease. Researchers postulate that this process may be occurring in people with Parkinson\u2019s who were never exposed to pesticides. The findings of this research provide insight into possible treatments to slow the disease, such as developing new drugs to protect ALDH activity. Although the exact cause of Parkinson\u2019s is still unknown, until this research scientists were focusing in on the protein a-synuclein as a pathway to the disease. 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By forging ties with governments, nonprofits, and people who rely on these natural resources, we reduce the need for unnecessary pesticide use and protect public health and the environment. Beyond Pesticides provides hands-on services to the public and supports local action by: identifying and interpreting hazards; and, designing safe pest management programs. With the information provided by Beyond Pesticides, people may not only be able to make informed choices and adopt practices that protect themselves and their families from unnecessary exposure to pesticides, but they will be able to effect changes on community-wide pest management decisions and policies that govern pesticide use, such as pesticide uses in parks, schools, for community insect control and along roadsides. 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Appearing in the online edition of PNAS, the UCLA scientists\u2019 work details the series of events that can occur after individuals are exposed to the pesticide benomyl, which was phased out in 2001. Researchers believe their findings on the series of events the pesticide sets in motion could be applicable even to Parkinson\u2019s patients who have not been exposed to benomyl. According to scientists, exposure to benomyl prevents the enzyme aldehyde dehydrogenase (ALDH) from keeping in check a naturally occurring toxin in the brain called 3,4-Dihydroxyphenylacetaldehyde (DOPAL). Without ALDH regulating DOPAL, the toxin accumulates, damages neurons, and increases an individual\u2019s risk of developing Parkinson\u2019s disease. Researchers postulate that this process may be occurring in people with Parkinson\u2019s who were never exposed to pesticides. The findings of this research provide insight into possible treatments to slow the disease, such as developing new drugs to protect ALDH activity. Although the exact cause of Parkinson\u2019s is still unknown, until this research scientists were focusing in on the protein a-synuclein as a pathway to the disease. 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