BOSTON – The challenges that come with battling a chronic medical condition or developmental disability are enough to get a young person down. But being left out, ignored or bullied by their peers is the main reason youths with special health care needs report symptoms of anxiety or depression, according to a study to be presented Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston. Being bullied has been shown to increase students' risk for academic and emotional problems. Little research has been done specifically on how being a victim ...

BOSTON – Newborns whose mothers are under stress during the first trimester of pregnancy may be at risk for low iron status, which could lead to physical and mental delays down the road, according to a study to be presented Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston. Iron plays an important role in the development of organ systems, especially the brain. Well-known risk factors for poor iron status in infants are maternal iron deficiency, maternal diabetes, smoking during pregnancy, preterm birth, low birthweight and multiple ...

BOSTON – It's well-known that using a cell phone while driving can lead to motor vehicle crashes. New research — to be presented Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston — shows that even anticipating calls or messages may distract drivers, increasing the risk of a crash. Jennifer M. Whitehill, PhD, postdoctoral fellow at Harborview Injury Prevention and Research Center at the University of Washington, and her colleagues sought to determine whether compulsive cell phone use is associated with motor vehicle crashes. They enlisted ...

BOSTON – Some people have questioned whether a ban on texting while driving will actually lead to more crashes because drivers will conceal their cell phones, making it more dangerous to read and type messages. Research led by high school students, however, shows that texting while driving is unsafe regardless of where the phone is positioned. The study, part of a project called Generation tXt, will be presented by one of the high school authors on Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston. Generation tXt was designed by ...

BOSTON – When children behave badly, it's easy to blame their parents. Sometimes, however, such behavior may be due to a mental disorder. Mental illnesses are the No. 1 cause of medical disability in youths ages 15 and older in the United States and Canada, according to the World Health Organization. "One reason we haven't made greater progress helping people recover from mental disorders is that we get on the scene too late," said Thomas R. Insel, MD, director of the National Institute of Mental Health (NIMH) and the featured speaker at the American Academy of Pediatrics' ...

BOSTON – There is a long-held concern that youths who eat a lot of fast food are at risk for becoming overweight. New research to be presented Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston shows that greater familiarity with fast-food restaurant advertising on television is associated with obesity in young people. "We know that children and adolescents are highly exposed to fast-food restaurant advertising, particularly on television. This study links obesity in young people to familiarity with this advertising, suggesting that youth ...

BOSTON – Minors who were familiar with television alcohol advertisements were more likely to have tried alcoholic beverages and binge drink than those who could not recall seeing such ads, according to a study to be presented Sunday, April 29, at the Pediatric Academic Societies (PAS) annual meeting in Boston. "Underage drinking remains an important health risk in the U.S.," said lead author Susanne E. Tanski, MD, MPH, FAAP, assistant professor in the Department of Pediatrics at Children's Hospital at Dartmouth, Dartmouth-Hitchcock Medical Center. "In this study, we ...

Scientists have predicted that ocean temperatures will rise in the equatorial Pacific by the end of the century, wreaking havoc on coral reef ecosystems. But a new study shows that climate change could cause ocean currents to operate in a surprising way and mitigate the warming near a handful of islands right on the equator. As a result these Pacific islands may become isolated refuges for corals and fish. Here's how it would happen, according to the study by Woods Hole Oceanographic Institution scientists Kristopher Karnauskas and Anne Cohen, published April 29 in the ...

Why do some teenagers start smoking or experimenting with drugs—while others don't? In the largest imaging study of the human brain ever conducted—involving 1,896 14-year-olds—scientists have discovered a number of previously unknown networks that go a long way toward an answer. Robert Whelan and Hugh Garavan of the University of Vermont, along with a large group of international colleagues, report that differences in these networks provide strong evidence that some teenagers are at higher risk for drug and alcohol experimentation—simply because their brains work differently, ...

PROVIDENCE, R.I. [Brown University] — Red, green, and blue lasers have become small and cheap enough to find their way into products ranging from BluRay DVD players to fancy pens, but each color is made with different semiconductor materials and by elaborate crystal growth processes. A new prototype technology demonstrates all three of those colors coming from one material. That could open the door to making products, such as high-performance digital displays, that employ a variety of laser colors all at once. "Today in order to create a laser display with arbitrary colors, ...

A combination of two diabetes drugs, metformin and rosiglitazone, was more effective in treating youth with recent-onset type 2 diabetes than metformin alone, a study funded by the National Institutes of Health (NIH) has found. Adding an intensive lifestyle intervention to metformin provided no more benefit than metformin therapy alone. The study also found that metformin therapy alone was not an effective treatment for many of these youth. In fact, metformin had a much higher failure rate in study participants than has been reported in studies of adults treated with ...

It is important to be able to monitor genetically modified (GM) crops, not only in the field but also during the food processing chain. New research published in BioMed Central's open access journal BMC Biotechnology shows that products from genetically modified crops can be identified at low concentration, using bioluminescent real time reporter (BART) technology and loop mediated isothermal amplification (LAMP). The combination of these techniques was able to recognise 0.1% GM contamination of maize, far below the current EU limit of 0.9%. In agriculture GM crops have ...

Alu elements infiltrated the ancestral primate genome about 65 million years ago. Once gained an Alu element is rarely lost so comparison of Alu between species can be used to map primate evolution and diversity. New research published in BioMed Central's open access journal Mobile DNA has found a single Alu, which appears to be an ancestral great ape Alu, that has uniquely multiplied within the orangutan genome. Analysis of DNA sequences has found over a million Alu elements within each primate genome, many of which are species specific: 5,000 are unique to humans, ...

Early colonization of the gut by microbes in infants is critical for development of their intestinal tract and in immune development. A new study, published in BioMed Central's open access journal Genome Biology, shows that differences in bacterial colonization of formula-fed and breast-fed babies leads to changes in the infant's expression of genes involved in the immune system, and in defense against pathogens. The health of individuals can be influenced by the diversity of microbes colonizing the gut, and microbial colonization can be especially important in regulating ...

SALT LAKE CITY, April 30, 2012 – Cochlear implants have restored basic hearing to some 220,000 deaf people, yet a microphone and related electronics must be worn outside the head, raising reliability issues, preventing patients from swimming and creating social stigma. Now, a University of Utah engineer and colleagues in Ohio have developed a tiny prototype microphone that can be implanted in the middle ear to avoid such problems. The proof-of-concept device has been successfully tested in the ear canals of four cadavers, the researchers report in a study just published ...

PULLMAN, Wash.— The Yellowstone "super-volcano" is a little less super—but more active—than previously thought. Researchers at Washington State University and the Scottish Universities Environmental Research Centre say the biggest Yellowstone eruption, which created the 2 million year old Huckleberry Ridge deposit, was actually two different eruptions at least 6,000 years apart. Their results paint a new picture of a more active volcano than previously thought and can help recalibrate the likelihood of another big eruption in the future. Before the researchers split ...

SAN FRANCISCO, CA—April 29, 2012—Scientists at the Gladstone Institutes have determined how specific circuitry in the brain controls not only body movement but also motivation and learning, providing new insight into neurodegenerative disorders such as Parkinson's disease—and psychiatric disorders such as addiction and depression. Previously, researchers in the laboratory of Gladstone Investigator Anatol Kreitzer, PhD, discovered how an imbalance in the activity of a specific category of brain cells is linked to Parkinson's. Now, in a paper published online today in Nature ...

Tablet based conference mirroring is giving residents an up close and personal look at images and making radiology case conferences a more interactive learning experience, a new study shows. Residents at Northwestern University in Chicago are using tablets and a free screen sharing software during case conferences to see and manipulate the images that are being presented. "The idea stems from the fact that I was used to having presentation slides directly in front of me during medical school lectures. I thought this would benefit radiology residents, especially in ...

MR enterography is superior to CT enterography in diagnosing fibrosis in pediatric patients with Crohn disease and equally as good as CT enterography in detecting active inflammation, and a new study shows. The study, conducted at Massachusetts General Hospital in Boston, found that MR enterography was 77.6% accurate in depicting fibrosis compared to 56.9% for CT enterography. MR enterography had an 82.1% accuracy rate versus 77.6% accuracy rate for CT enterography for detecting active inflammation, said Keith Quencer, MD, one of the authors of the study. The study ...

Radiologists classify themselves as less competent than other physicians regarding knowledge of patient imaging costs and patient safety, a new study shows. The study conducted at Thomas Jefferson University in Philadelphia and Northwestern University in Chicago compared 711 radiologists to 2,685 non-radiology physicians. "On a scale of one to five, with five being highly competent, understanding of patient safety was rated as 3.1 by radiologists and 3.33 by non-radiologists," said Rajni Natesan, MD, an author of the study from Northwestern University. Patient imaging ...

About one-third of CT examinations performed following an inconclusive abdominal ultrasound examination have positive findings, according to a study of 449 patients at Massachusetts General Hospital in Boston. Opinions vary as to the need and relevance for further diagnostic imaging workup after an inconclusive abdominal ultrasound examination, said Supriya Gupta, MD, one of the authors of the study. "Our study found that 32.9% of follow-up CT examinations had positive findings, while 42.7% had findings that were not significant and 11.7% were equivocal. The remaining ...

BOSTON – Binkies, corks, soothers. Whatever you call pacifiers, conventional wisdom holds that giving them to newborns can interfere with breastfeeding. New research, however, challenges that assertion. In fact, limiting the use of pacifiers in newborn nurseries may actually increase infants' consumption of formula during the birth hospitalization, according to a study to be presented Monday, April 30, at the Pediatric Academic Societies (PAS) annual meeting in Boston. Studies have shown that breastfed infants have fewer illnesses such as ear infections and diarrhea ...

Researchers from the Centers for Disease Control and Prevention (CDC) found that one-third of U.S. adults with arthritis, 45 years and older, report having anxiety or depression. According to findings that appear today in Arthritis Care & Research, a journal published by Wiley-Blackwell on behalf of the American College of Rheumatology (ACR), anxiety is nearly twice as common as depression among people with arthritis, despite more clinical focus on the latter mental health condition. In the U.S. 27 million individuals, 25 years of age and older, have doctor diagnosed ...

Philadelphia, PA, April 30, 2012 – It is often thought that starting a family will lead parents to healthier eating habits, as they try to set a good example for their children. Few studies, however, have evaluated how the addition of children into the home may affect parents' eating habits. Changes in family finances, the challenges of juggling schedules, or a child's eating preferences may influence how a family eats. In one of the first longitudinal studies to examine the effect of having children on parents' eating habits, researchers have found that parenthood does ...

WASHINGTON, April 30--Physicists have long chased an elusive goal: the ability to "freeze" and then study the motion of electrons in matter. Such experiments could help confirm theories of electron motion and yield insights into how and why chemical reactions take place. Now a collaboration of scientists from France and Canada has developed an elegant new method to study electrons' fleeting antics using isolated, precisely timed, and incredibly fast pulses of light. The team will describe the technique at the Conference on Lasers and Electro-Optics , taking place in San ...