{"id":23458,"date":"2018-07-20T12:00:14","date_gmt":"2018-07-20T18:00:14","guid":{"rendered":"http:\/\/www.salud.carlosslim.org\/english2\/?p=23458"},"modified":"2018-07-20T13:21:49","modified_gmt":"2018-07-20T19:21:49","slug":"binge-drinking-during-adolescence-affects-working-memory","status":"publish","type":"post","link":"http:\/\/www.salud.carlosslim.org\/english2\/binge-drinking-during-adolescence-affects-working-memory\/","title":{"rendered":"Binge drinking during adolescence affects working memory"},"content":{"rendered":"

\"\"Binge drinking is never healthy, but the behavior brings the greatest risks for young adolescents. Adolescents who start drinking before age 15 are four times more likely to become adult alcoholics than those who start to drink as older teens<\/strong>. And those who binge drink are more likely to suffer from memory problems that persist into adulthood<\/strong>.<\/p>\n

\u201cThe brains of young teens are at a stage of development that makes them more vulnerable to being switched on to alcohol addiction<\/em>,\u201d says Neil Harrison, PhD, professor of anesthesiology and pharmacology at Columbia University Vagelos College of Physicians and Surgeons (VP&S) who researches the effects of alcohol on the brain. \u201cThe question we\u2019re asking is, can we find those switches in the adolescent binge drinker so that we can turn it off?<\/em>\u201d<\/p>\n

Other researchers have looked at the neuroscience of binge drinking\u2014by getting mice intoxicated through vapor inhalation or alcohol injection<\/strong>. Michael Salling, PhD, assistant professor of anesthesiology at VP&S, and his team are taking a different approach, allowing the mice to drink voluntarily<\/strong>.<\/p>\n

\u201cShortcuts are useful in getting animals to drink, but these models don\u2019t resemble how drinking develops in humans<\/em>,\u201d Harrison says. In Salling\u2019s approach, mice are given access to alcohol every other day during a period in their development that\u2019s equivalent to human adolescence<\/strong>. \u201cSome of the mice drink avidly and some very little\u2014which parallels the human experience<\/strong>.<\/em>\u201d<\/p>\n

The consequences of binge drinking in adolescent mice are also similar to the effects in humans. As the mice become young adults, those that drank heavily in their youth adopt drinking patterns often seen in people.<\/p>\n

\u201cOften the mice will drink robustly as soon as the alcohol is provided<\/em><\/strong>,\u201d says Salling. \u201cThis so-called front-loading behavior is frequently present in people who later develop an alcohol use disorder<\/em><\/strong>.\u201d<\/p>\n

And just like people, binge drinking mice also suffer memory problems, as shown in Harrison and Salling\u2019s most recent study, published July 4 in the Journal of Neuroscience<\/em>. The study is the first to show that voluntary alcohol consumption in adolescent mice leads to a deficit in very short-term memory known as \u201cworking memory\u201d<\/strong>\u2014and it\u2019s giving the researchers a window into what binge drinking does to the teenage brain.<\/p>\n

The most striking changes the researchers saw appeared in neurons within the mouse equivalent of the human prefrontal cortex (PFC)<\/strong>, which is involved in planning actions by suppressing inappropriate responses and maintaining working memory and attention. The area does not completely mature in people until their 20s<\/strong>.<\/p>\n

In the binge drinking mice, certain PFC neurons were less able to generate persistent activity, and these changes appear to impair working memory<\/strong>. This finding is consistent with imaging studies that show decreased resting activity in the PFC of alcoholics and binge drinkers.<\/p>\n

\u201cThese findings may help explain why human adolescent binge drinkers have memory problems<\/em><\/strong>,\u201d Salling says, \u201cbut they also suggest that there are ways to intervene<\/strong><\/em>.\u201d<\/p>\n

Harrison and Salling found that binge drinking altered neuron excitability by interfering with channels that allow ions to flow into the neurons<\/strong>.<\/p>\n

\u201cTargeting these channels may restore normal patterns of activity in the PFC and improve working memory<\/em>,\u201d says Harrison, who adds that neurobiological studies such as this are needed to develop new treatments for alcohol use disorders.<\/p>\n

\u201cMost adults with alcohol use disorders begin their excessive drinking as teenagers. If we hope to find ways to prevent or treat these disorders, it\u2019s critical that we understand not only the social and environmental factors that contribute to early binge drinking but also the changes that occur in the brain that lead to alcohol addiction<\/strong><\/em>.\u201d<\/p>\n

 <\/p>\n

Source<\/strong>: Columbia University Irving Medical Center<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Binge drinking is never healthy, but the behavior brings the greatest risks for young adolescents. Adolescents who start drinking before age 15 are four times more likely to become adult alcoholics than those who start to drink as older teens. And those who binge drink are more likely to suffer from memory problems that persist …<\/p>\n","protected":false},"author":1,"featured_media":23461,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[3],"tags":[16,7],"class_list":["post-23458","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualidad-en-la-salud","tag-adicciones","tag-clikisalud","cat-3-id","has_thumb"],"_links":{"self":[{"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/posts\/23458","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/comments?post=23458"}],"version-history":[{"count":3,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/posts\/23458\/revisions"}],"predecessor-version":[{"id":23462,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/posts\/23458\/revisions\/23462"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/media\/23461"}],"wp:attachment":[{"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/media?parent=23458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/categories?post=23458"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.salud.carlosslim.org\/english2\/wp-json\/wp\/v2\/tags?post=23458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}