Most Recent Links
Follow us on Facebook or subscribe to our mailing list, to receive news updates. Learn more.
By David Z. Hambrick Nearly a century after James Truslow Adams coined the phrase, the “American dream” has become a staple of presidential campaign speeches. Kicking off her 2016 campaign, Hillary Clinton told supporters that “we need to do a better job of getting our economy growing again and producing results and renewing the American dream.” Marco Rubio lamented that “too many Americans are starting to doubt” that it is still possible to achieve the American dream, and Ted Cruz asked his supporters to “imagine a legal immigration system that welcomes and celebrates those who come to achieve the American dream.” Donald Trump claimed that “the American dream is dead” and Bernie Sanders quipped that for many “the American dream has become a nightmare.” But the American dream is not just a pie-in-the-sky notion—it’s a scientifically testable proposition. The American dream, Adams wrote, “is not a dream of motor cars and high wages merely, but a dream of social order in which each man and each woman shall be able to attain to the fullest stature of which they are innately capable…regardless of the fortuitous circumstances of birth or position.” In the parlance of behavioral genetics—the scientific study of genetic influences on individual differences in behavior—Adams’ idea was that all Americans should have an equal opportunity to realize their genetic potential. A study just published in Psychological Science by psychologists Elliot Tucker-Drob and Timothy Bates reveals that this version of the American dream is in serious trouble. Tucker-Drob and Bates set out to evaluate evidence for the influence of genetic factors on IQ-type measures (aptitude and achievement) that predict success in school, work, and everyday life. Their specific question was how the contribution of genes to these measures would compare at low versus high levels of socioeconomic status (or SES), and whether the results would differ across countries. The results reveal, ironically, that the American dream is more of a reality for other countries than it is for America: genetic influences on IQ were uniform across levels of SES in Western Europe and Australia, but, in the United States, were much higher for the rich than for the poor. © 2016 Scientific American
Keyword: Genes & Behavior; Intelligence
Link ID: 22051 - Posted: 03.30.2016
Chris French The fallibility of human memory is one of the most well established findings in psychology. There have been thousands of demonstrations of the unreliability of eyewitness testimony under well-controlled conditions dating back to the very earliest years of the discipline. Relatively recently, it was discovered that some apparent memories are not just distorted memories of witnessed events: they are false memories for events that simply never took place at all. Psychologists have developed several reliable methods for implanting false memories in a sizeable proportion of experimental participants. It is only in the last few years, however, that scientists have begun to systematically investigate the phenomenon of non-believed memories. These are subjectively vivid memories of personal experiences that an individual once believed were accurate but now accepts are not based upon real events. Prior to this, there were occasional anecdotal reports of non-believed memories. One of the most famous was provided by the influential developmental psychologist Jean Piaget. He had a clear memory of almost being kidnapped at about the age of two and of his brave nurse beating off the attacker. His grateful family were so impressed with the nurse that they gave her a watch as a reward. Years later, the nurse confessed that she had made the whole story up. Even after he no longer believed that the event had taken place, Piaget still retained his vivid and detailed memory of it. © 2016 Guardian News and Media Limited
Keyword: Learning & Memory
Link ID: 22050 - Posted: 03.30.2016
We might finally be figuring out how an increasingly popular therapy that uses electricity to boost the brain’s functioning has its effects – by pushing up levels of calcium in cells. Transcranial direct current stimulation (tDCS) involves using electrodes to send a weak current across the brain. Stimulating brain tissue like this has been linked to effects ranging from accelerating learning to improving the symptoms of depression and faster recovery from strokes. The broad consensus is that tDCS does this by lowering the threshold at which neurons fire, making it easier for them to pass on electrical signals. This leads to changes in the connectivity between neurons and alters information processing. But the cellular mechanisms that lead to such broad neurological changes are not clear and some researchers suggest that tDCS may not have any effect on the brain. Despite the doubts, devices are being developed for sale to people keen to influence their own brains. Now Hajime Hirase at the RIKEN Brain Science Institute in Tokyo, Japan, and his colleagues may have found an answer. They have identified large, sudden surges in calcium flow in the brains of mice seconds after they receive low doses of tDCS. These surges seem to start in cells called astrocytes – star-shaped cells that don’t fire themselves, but help to strengthen the connections between neurons and regulate the electrical signals that pass between them. © Copyright Reed Business Information Ltd.
Keyword: Depression; Glia
Link ID: 22049 - Posted: 03.30.2016
Brendan Maher It took less than a minute of playing League of Legends for a homophobic slur to pop up on my screen. Actually, I hadn't even started playing. It was my first attempt to join what many agree to be the world's leading online game, and I was slow to pick a character. The messages started to pour in. “Pick one, kidd,” one nudged. Then, “Choose FA GO TT.” It was an unusual spelling, and the spaces may have been added to ease the word past the game's default vulgarity filter, but the message was clear. Online gamers have a reputation for hostility. In a largely consequence-free environment inhabited mostly by anonymous and competitive young men, the antics can be downright nasty. Players harass one another for not performing well and can cheat, sabotage games and do any number of things to intentionally ruin the experience for others — a practice that gamers refer to as griefing. Racist, sexist and homophobic language is rampant; aggressors often threaten violence or urge a player to commit suicide; and from time to time, the vitriol spills beyond the confines of the game. In the notorious 'gamergate' controversy that erupted in late 2014, several women involved in the gaming industry were subjected to a campaign of harassment, including invasions of privacy and threats of death and rape. League of Legends has 67 million players and grossed an estimated US$1.25 billion in revenue last year. But it also has a reputation for toxic in-game behaviour, which its parent company, Riot Games in Los Angeles, California, sees as an obstacle to attracting and retaining players. © 2016 Nature Publishing Group
Keyword: Aggression; Learning & Memory
Link ID: 22048 - Posted: 03.30.2016
By Ariana Eunjung Cha In the movie "Concussion," which is based on the life of Bennet Omalu, a doctor who studied traumatic brain injury, Omalu explains that the reason the prognosis is so poor for so many of them is because their symptoms went undiagnosed. When head injuries aren't treated or are under-treated, it puts patients at risk of more serious injury. This is why children with concussions are often asked not to return to class or sports until their symptoms have resolved and adults often have to take days off work. One of the challenges has been that concussions are tricky to diagnose, and it isn't uncommon for a patient to rush to the ER only to be met with a vague response from the doctor about whether there's anything worrisome. Symptoms often aren't apparent for hours or even days after the initial injury, and the imaging technology we have can't pick up anything other than larger bleeds and lesions. How different could things have been if there was a simple blood test to detect a concussion? In a paper published in JAMA Neurology on Monday, researchers reported that they may be closer than ever to such a test. The study involved 600 patients admitted to a trauma center from March 2010 to March 2014. All had suffered some kind of head injury resulting in loss of consciousness, amnesia or disorientation.
Keyword: Brain Injury/Concussion; Glia
Link ID: 22047 - Posted: 03.30.2016
Opioids are becoming the latest serious addiction problem in this country. Among these drugs manufactured from opium, heroin is the most serious, dangerous, cheap and available everywhere. In April's edition of Harper's Magazine, Dan Baum has examined a new response to this latest addiction problem: the legalization of drugs. NPR's Linda Wertheimer asks Baum about how he began to delve into the topic of America's war on drugs and why he calls attempts at legalization a big risk based on our approach to solving the widespread problem. Interview Highlights You go back, covering the war on drugs, I wonder if you could tell us the story which kicks off your article. I was starting a book on the politics of drug enforcement. And in 1994 I got word that John Erlichman was doing minority recruitment at an engineering firm in Atlanta. Well, I'm 60. Erlichman was one of the great villains of American History, a Watergate villain. And he was Richard Nixon's drug policy advisor. And Richard Nixon was the one who coined the phrase, "war on drugs." And he told me an amazing thing. I started asking him some earnest, wonky policy questions and he waved them away. He said, "Can we cut the B.S.? Can I just tell you what this was all about?" The Nixon campaign in '68 and the Nixon White House had two enemies: black people and the anti-war left. He said, and we knew that if we could associate heroin with black people and marijuana with the hippies, we could project the police into those communities, arrest their leaders, break up their meetings and most of all, demonize them night after night on the evening news. And he looked me in the eyes and said, "Did we know we were lying about the drugs? Of course we did." © 2016 npr
Keyword: Drug Abuse
Link ID: 22046 - Posted: 03.29.2016
by Sarah Zielinski There must be something wrong with the guy who never leaves home, right? Maybe not — at least if that guy is a male spotted hyena. Males that stay with their birth clan, instead of taking off to join a new group, may simply be making a good choice, a new study suggests. Spotted hyenas are a matriarchal society. Females are in charge. They rank higher than every male in the clan. And the females generally stay with the clan for their entire lives. But males face a choice when they reach two and a half years in age. They can stay with the clan, or they can leave and join a new clan. Each choice has its pros and cons. Staying with the clan means that a male hyena keeps a place at the top of the male pecking order. He’ll probably have his mother around to help. But he’ll be limited in the number of females he can mate with, because many of the female hyenas won’t mate with him because they might be related. If he joins a new clan, the male hyena might have access to more females — and they might even be better than the ones in his home clan — but he’ll start with the lowest social rank and have to spend years fighting his way to the top. Among most group-living mammal species, the guys that stay at home turn out to be losers, siring fewer offspring. But spotted hyenas, it appears, are an exception. Eve Davidian of the Leibniz Institute for Zoo and Wildlife Research in Berlin and colleagues tracked 254 male spotted hyenas that lived in eight clans in Ngorongoro Crater in Tanzania throughout their lives, a study lasting 20 years. When these males reached the age of maturity, they left their clans to take a look at the other options available to them. Forty-one hyenas returned to their home clans, and 213 settled with new ones. © Society for Science & the Public 2000 - 2016
Keyword: Sexual Behavior; Evolution
Link ID: 22045 - Posted: 03.29.2016
By Roni Caryn Rabin Here’s another reason to eat your fruits and veggies: You may reduce your risk of vision loss from cataracts. Cataracts that cloud the lenses of the eye develop naturally with age, but a new study is one of the first to suggest that diet may play a greater role than genetics in their progression. Researchers had about 1,000 pairs of female twins in Britain fill out detailed food questionnaires that tracked their nutrient intake. Their mean age was just over 60. The study participants underwent digital imaging of the eye to measure the progression of cataracts. The researchers found that women who consumed diets rich in vitamin C and who ate about two servings of fruit and two servings of vegetables a day had a 20 percent lower risk of cataracts than those who ate a less nutrient-rich diet. Ten years later, the scientists followed up with 324 of the twin pairs, and found that those who had reported consuming more vitamin C in their diet — at least twice the recommended dietary allowance of 75 milligrams a day for women (the R.D.A. for adult men is 90 milligrams) — had a 33 percent lower risk of their cataracts progressing than those who get less vitamin C. The researchers concluded that genetic factors account for about 35 percent of the difference in cataract progression, while environmental factors like diet account for 65 percent. “We found no beneficial effect from supplements, only from the vitamin C in the diet,” said Dr. Christopher Hammond, a professor of ophthalmology at King’s College London and an author of the study,published in Ophthalmology. Foods high in vitamin C include oranges, cantaloupe, kiwi, broccoli and dark leafy greens. © 2016 The New York Times Company
Keyword: Vision
Link ID: 22044 - Posted: 03.29.2016
By Patrick Monahan Yesterday, mountaineer Richard Parks set out for Kathmandu to begin some highly unusual data-gathering. As part of Project Everest Cynllun, he will climb Mount Everest without supplemental oxygen and perform—on himself—a series of blood draws, muscle biopsies, and cognitive tests. If he makes it to the summit, these will be the highest-elevation blood and tissue samples ever collected. Damian Bailey, a physiologist at the University of South Wales, Pontypridd, in the United Kingdom and the project’s lead scientist, hopes the risky experiment will yield new information about how the human body responds to low-oxygen conditions, and how similar mechanisms might drive cognitive decline with aging. As Parks began the acclimatization process with warm-up climbs on two smaller peaks, Bailey told ScienceInsider about his ambitions for the project. This interview has been edited for clarity and brevity. Q: Parks is an extreme athlete who has climbed Everest before. What can his performance tell us about regular people? A: What we’re trying to understand is, what is it about Richard’s brain that is potentially different from other people’s brains, and can that provide us with some clues to accelerated cognitive decline, which occurs with aging [and] dementia. We know that sedentary aging is associated with a progressive decline in blood flow to the brain. … And the main challenge for sedentary aging is we have to wait so long to see the changes occurring. So this is almost a snapshot, a day in the life of a patient with cognitive decline. © 2016 American Association for the Advancement of Science.
Keyword: Alzheimers; Learning & Memory
Link ID: 22043 - Posted: 03.29.2016
By C. CLAIBORNE RAY Q. Why do we become desensitized to a perfume we are wearing while others can still smell it? A. Ceasing to smell one’s perfume after continuous exposure while casual passers-by can still smell it is just one example of a phenomenon called olfactory adaptation or odor fatigue. After some time without exposure, sensitivity is usually restored. A similar weakening of odor signals with continued exposure also takes place in animals other than humans, and researchers often rely on animal studies to try to understand the cellular and molecular bases for the condition. It has been suggested that odor fatigue is useful because it enables animals to sort out the signals of a new odor from the background noise of continuous odors. It may also enable them to sense when an odor grows stronger. Studies published in the journal Science in 2002 pinpointed a chemical that seems to act as a gatekeeper for neurons involved in smell, opening and closing their electric signal channels. Genetically engineered mice that did not produce the substance, a protein called CNGA4, had profoundly impaired olfactory adaptation. A separate test-tube study found similar changes on a cellular level, with the signal channels remaining open when CNGA4 was absent. question@nytimes.com © 2016 The New York Times Company
Keyword: Chemical Senses (Smell & Taste)
Link ID: 22042 - Posted: 03.29.2016
By Emily Underwood This tangle of wiry filaments is not a bird’s nest or a root system. Instead, it’s the largest map to date of the connections between brain cells—in this case, about 200 from a mouse’s visual cortex. To map the roughly 1300 connections, or synapses, between the cells, researchers used an electron microscope to take millions of nanoscopic pictures from a speck of tissue not much bigger than a dust mite, carved into nearly 3700 slices. Then, teams of “annotators” traced the spindly projections of the synapses, digitally stitching stacked slices together to form the 3D map. The completed map reveals some interesting clues about how the mouse brain is wired: Neurons that respond to similar visual stimuli, such as vertical or horizontal bars, are more likely to be connected to one another than to neurons that carry out different functions, the scientists report online today in Nature. (In the image above, some neurons are color-coded according to their sensitivity to various line orientations.) Ultimately, by speeding up and automating the process of mapping such networks in both mouse and human brain tissue, researchers hope to learn how the brain’s structure enables us to sense, remember, think, and feel. © 2016 American Association for the Advancement of Science
Keyword: Brain imaging
Link ID: 22041 - Posted: 03.29.2016
By BENEDICT CAREY BEDFORD, Mass. — In a small room banked by refrigerators of preserved brains, a pathologist held a specimen up to the light in frank admiration. Then it was time to cut — once in half and then a thick slice from the back, the tissue dense and gray-pink, teeming with folds and swirls. It was the brain of a professional running back. “There,” said Dr. Ann McKee, the chief of neuropathology at the V.A. Boston Healthcare System and a professor of neurology and pathology at Boston University’s medical school, pointing to a key area that had an abnormal separation. “That’s one thing we look for right away.” Over the past several years, Dr. McKee’s lab, housed in a pair of two-story brick buildings in suburban Boston, has repeatedly made headlines by revealing that deceased athletes, including at least 90 former N.F.L. players, were found to have had a degenerative brain disease called chronic traumatic encephalopathy, or C.T.E., that is believed to cause debilitating memory and mood problems. This month, after years of denying or playing down a connection, a top N.F.L. official acknowledged at a hearing in Washington that playing football and having C.T.E. were “certainly” linked. His statement effectively ended a very public dispute over whether head blows sustained while playing football are associated with the disorder. But it will not resolve a quieter debate among scientists about how much risk each football player has of developing it, or answer questions about why some players seem far more vulnerable to it than others. Some researchers worry that the rising drumbeat of C.T.E. diagnoses is far outpacing scientific progress in pinpointing the symptoms, risks and prevalence of the disease. The American Academy of Clinical Neuropsychology, an organization of brain injury specialists, is preparing a public statement to point out that much of the science of C.T.E. is still unsettled and to contend that the evidence to date should not be interpreted to mean that parents must keep their children off sports teams, officials of the group say. © 2016 The New York Times Company
Keyword: Brain Injury/Concussion; Brain imaging
Link ID: 22040 - Posted: 03.28.2016
By Esther Hsieh Spinal implants have suffered similar problems as those in the brain—they tend to abrade tissue, causing inflammation and ultimately rejection by the body. Now an interdisciplinary research collaboration based in Switzerland has made a stretchable implant that appears to solve this problem. Like Lieber's new brain implant, it matches the physical qualities of the tissue where it is embedded. The “e-dura” implant is made from a silicone rubber that has the same elasticity as dura mater, the protective skin that surrounds the spinal cord and brain, explains Stéphanie Lacour, a professor at the school of engineering at the Swiss Federal Institute of Technology in Lausanne. This feature allows the implant to mimic the movement of the surrounding tissues. Embedded in the e-dura are electrodes for stimulation and microchannels for drug therapy. Ultrathin gold wires are made with microscopic cracks that allow them to stretch. Also, the electrodes are coated with a special platinum-silicone mixture that is stretchable. In an experiment that lasted two months, the scientists found that healthy rats with an e-dura spinal implant could walk across a ladder as well as a control group with no implant. Yet rats with a traditional plastic implant (which is flexible but not stretchable) started stumbling and missing rungs a few weeks after surgery. The researchers removed the implants and found that rats with a traditional implant had flattened, damaged spinal cords—but the e-dura implants had left spinal cords intact. Cellular testing also showed a strong immune response to the traditional implant, which was minimal in rats with the e-dura implant. © 2016 Scientific American
Keyword: Regeneration; Movement Disorders
Link ID: 22039 - Posted: 03.28.2016
By DAVID FRANK and JAMES GORMAN Social life is good for you, even when your friends have lice — if you’re a Japanese macaque. Whether the same is true for humans hasn’t been tested directly, at least not the way researchers in Japan conducted their experiments with networks of female macaques. Julie Duboscq, a researcher at Kyoto University’s Primate Research Institute in Japan, tracked louse infestation and grooming interactions in about 20 adult female macaques. As she, Andrew J.J. MacIntosh and their colleagues noted in describing their research in Scientific Reports, grooming is known to reduce lice, but such close physical contact can also make it easy for lice to pass from one animal to another. Dr. Duboscq is interested in the costs and benefits of social behavior. For animals that live in social groups, as macaques and people do, the benefits of social life are many, from defense against predators (for wild monkeys, and no doubt for humans at some point in their history) to emotional health and well-being (for humans, and probably monkeys, too). But there are negatives associated with sociality, like the transmission of parasites and diseases. “We don’t fully understand the costs and benefits,” Dr. Duboscq said. In this study, she and her colleagues estimated the degree of louse infestation by the number of nits picked. The more nits, they calculated, the more lice-producing nits. © 2016 The New York Times Company
Keyword: Stress
Link ID: 22038 - Posted: 03.28.2016
New York's Tribeca Film Festival will not show Vaxxed, a controversial film about the MMR vaccine, its founder Robert De Niro says. As recently as Friday, Mr De Niro stood by his decision to include the film by anti-vaccination activist Andrew Wakefield in next month's festival. The link the film makes between the measles, mumps and rubella vaccine and autism has been widely discredited. "We have concerns with certain things in this film," said Mr De Niro. Mr De Niro, who has a child with autism, said he had hoped the film would provide the opportunity for discussion of the issue. But after reviewing the film with festival organisers and scientists, he said: "We do not believe it contributes to or furthers the discussion I had hoped for." Image caption Wakefield published his controversial study in 1998 Vaxxed was directed and co-written by Mr Wakefield, who described it as a "whistle-blower documentary". In a statement issued following the Tribeca Film Festival's decision, he and the film's producer Del Bigtree said that "we have just witnessed yet another example of the power of corporate interests censoring free speech, art and truth". The British doctor was the lead author of a controversial study published in 1998, which argued there might be a link between MMR and autism and bowel disease. Mr Wakefield suggested that parents should opt for single jabs against mumps, measles and rubella instead of the three-in-one vaccine. His comments and the subsequent media furore led to a sharp drop in the number of children being vaccinated against these diseases. But the study, first published in The Lancet, was later retracted by the medical journal. Mr Wakefield's research methods were subsequently investigated by the General Medical Council and he was struck off the medical register.
Keyword: Autism
Link ID: 22037 - Posted: 03.28.2016
John Consentino After multiple doctors had conflicted about ADHD, I decided to move away from psychiatry and seek a neuropsychologist. I thought that autism made sense, but what ultimately led me to seek help was my focus problem. When I was 8 years old, it would take me HOURS to do homework. On Wednesdays, we got out of school at noon, and I wouldn't finish homework until about 8 p.m. No one understood why this was happening, and with all of the screaming and punishments I withstood, nothing improved. I still had GPAs near the high 90s, so all was OK, supposedly. I struggled with eye contact during that time, and this is very much apparent now. I struggled speaking to waiters/waitresses, to teachers, to family members. Speaking to members of the opposite sex was a near-impossible task. I never understood social groups. I went through all of high school in the same fashion. However, my family felt that everything was OK. I still had a mid-90 GPA, and I had made numerous friends. Unfortunately, my GPA had dropped by about 15-plus points by my senior year. I struggled badly during my first two years of college. I was constantly unhappy, and I made little to no friends. My GPA was horrid, and my time at the university was dwindling. I dropped out of school twice, and my future felt bleak. After transferring schools, I did great. So, everything was OK yet again. © 2016 npr
Keyword: Autism
Link ID: 22036 - Posted: 03.28.2016
By ALAN SCHWARZ, WALT BOGDANICH and JACQUELINE WILLIAMS With several of its marquee players retiring early after a cascade of frightening concussions, the league formed a committee in 1994 that would ultimately issue a succession of research papers playing down the danger of head injuries. Amid criticism of the committee’s work, physicians brought in later to continue the research said the papers had relied on faulty analysis. Now, an investigation by The New York Times has found that the N.F.L.’s concussion research was far more flawed than previously known. For the last 13 years, the N.F.L. has stood by the research, which, the papers stated, was based on a full accounting of all concussions diagnosed by team physicians from 1996 through 2001. But confidential data obtained by The Times shows that more than 100 diagnosed concussions were omitted from the studies — including some severe injuries to stars like quarterbacks Steve Young and Troy Aikman. The committee then calculated the rates of concussions using the incomplete data, making them appear less frequent than they actually were. After The Times asked the league about the missing diagnosed cases — more than 10 percent of the total — officials acknowledged that “the clubs were not required to submit their data and not every club did.” That should have been made clearer, the league said in a statement, adding that the missing cases were not part of an attempt “to alter or suppress the rate of concussions.” One member of the concussion committee, Dr. Joseph Waeckerle, said he was unaware of the omissions. But he added: “If somebody made a human error or somebody assumed the data was absolutely correct and didn’t question it, well, we screwed up. If we found it wasn’t accurate and still used it, that’s not a screw-up; that’s a lie.” These discoveries raise new questions about the validity of the committee’s findings, published in 13 peer-reviewed articles and held up by the league as scientific evidence that brain injuries did not cause long-term harm to its players. It is also unclear why the omissions went unchallenged by league officials, by the epidemiologist whose job it was to ensure accurate data collection and by the editor of the medical journal that published the studies. © 2016 The New York Times Company
Keyword: Brain Injury/Concussion
Link ID: 22035 - Posted: 03.26.2016
Mo Costandi Researchers in the United States have developed a new method for controlling the brain circuits associated with complex animal behaviours, using genetic engineering to create a magnetised protein that activates specific groups of nerve cells from a distance. Understanding how the brain generates behaviour is one of the ultimate goals of neuroscience – and one of its most difficult questions. In recent years, researchers have developed a number of methods that enable them to remotely control specified groups of neurons and to probe the workings of neuronal circuits. The most powerful of these is a method called optogenetics, which enables researchers to switch populations of related neurons on or off on a millisecond-by-millisecond timescale with pulses of laser light. Another recently developed method, called chemogenetics, uses engineered proteins that are activated by designer drugs and can be targeted to specific cell types. Although powerful, both of these methods have drawbacks. Optogenetics is invasive, requiring insertion of optical fibres that deliver the light pulses into the brain and, furthermore, the extent to which the light penetrates the dense brain tissue is severely limited. Chemogenetic approaches overcome both of these limitations, but typically induce biochemical reactions that take several seconds to activate nerve cells. The new technique, developed in Ali Güler’s lab at the University of Virginia in Charlottesville, and described in an advance online publication in the journal Nature Neuroscience, is not only non-invasive, but can also activate neurons rapidly and reversibly. © 2016 Guardian News and Media Limited
Keyword: Brain imaging
Link ID: 22034 - Posted: 03.26.2016
Kristin Gourlay Swaddled in soft hospital blankets, Lexi is 2 weeks old and weighs 6 pounds. She's been at Women and Infants Hospital in Providence, R.I., since she was born, and is experiencing symptoms of opioid withdrawal. Her mother took methadone to wean herself from heroin when she got pregnant, just as doctors advised. But now the hospital team has to wean newborn Lexi from the methadone. As rates of opioid addiction have continued to climb in the U.S., the number of babies born with neonatal abstinence syndrome has gone up, too — by five-fold from 2000 to 2012, according to the National Institute of Drug Abuse. It can be a painful way to enter the world, abruptly cut off from the powerful drug in the mother's system. The baby is usually born with some level of circulating opioids. As drug levels decline in the first 72 hours, various withdrawal symptoms may appear — such as trembling, vomiting, diarrhea or seizures. At some point, if symptoms mount in number or severity, doctors will begin giving medication to help ease them. The idea is to give the baby just enough opioid to reduce those symptoms, and then slowly, over days or weeks, decrease that dose to zero. A doctor comes to check on Lexi and her mother, Carrie. To protect her family's privacy, Carrie asked us not to use the family name. "So, hi, Peanut!" the doctor says to the baby. "Any concerns?" she asks Carrie. "Coming down has been catching up with her," says Carrie. © 2016 npr
Keyword: Drug Abuse; Development of the Brain
Link ID: 22033 - Posted: 03.26.2016
By KATHARINE Q. SEELYE LAWRENCE, Mass. — When Eddie Frasca was shooting up heroin, he occasionally sought out its more potent, lethal cousin, fentanyl. “It was like playing Russian roulette, but I didn’t care,” said Mr. Frasca, 30, a carpenter and barber who said he had been clean for four months. When he heard that someone had overdosed or even died from fentanyl, he would hunt down that batch. “I’d say to myself, ‘I’m going to spend the least amount of money and get the best kind of high I can,’ ” he said. Fentanyl, which looks like heroin, is a powerful synthetic painkiller that has been laced into heroin but is increasingly being sold by itself — often without the user’s knowledge. It is up to 50 times more powerful than heroin and up to 100 times more potent than morphine. A tiny bit can be fatal. In some areas in New England, fentanyl is now killing more people than heroin. In New Hampshire, fentanyl alone killed 158 people last year; heroin killed 32. (Fentanyl was a factor in an additional 120 deaths; heroin contributed to an additional 56.) “It sort of snuck up on us,” said Detective Capt. Robert P. Pistone of the Haverhill Police Department in Massachusetts. He said that a jump in deaths in 2014 appeared to be caused by heroin, but that lab tests showed the culprit was fentanyl. Fentanyl represents the latest wave of a rolling drug epidemic that has been fueled by prescription painkillers, as addicts continue to seek higher highs and cheaper fixes. © 2016 The New York Times Company
Keyword: Drug Abuse
Link ID: 22032 - Posted: 03.26.2016


.gif)

