To explore any possible limits of the two theories, they have been experimentally verified many times already and both have passed all the tests so far. Hence, scientists look for deviations in experiments with increasing precision or under extreme conditions. For this purpose, Nörtershäuser's team has now accelerated ions to velocities near the speed of light and illuminated them with a laser. The results, which are presented in two new publications, confirm the time dilation predicted for high velocities in the theory of relativity with an accuracy that ...

Deerfield, Ill. (October 8, 2014) — The annual number of dengue fever cases in India is 282 times higher than officially reported, and the disease inflicts an economic burden on the country of at least US$1.11 billion each year in medical and other expenses, according to a new study published online today in the American Journal of Tropical Medicine & Hygiene. The study, led by researchers at Brandeis University's Schneider Institute for Health Policy in Waltham, Massachusetts, the INCLEN Trust International in New Delhi, and the Indian Council of Medical Research's ...

The battle against AIDS cannot be won in the laboratory alone. To fight the potentially deadly virus that 34 million people are suffering from we need help from computers. Now research fron University of Southern Denmark turns computers into powerful allies in the battle. Effective treatment of HIV-virus is a race against time: Many of the drugs that have been potent killers of HIV-virus, have today lost their power, because the virus has become resistant to them. As a result science must constantly develop new drugs that can attack the virus in new ways. Now researchers ...

Scientists at The University of Texas Health Science Center at Houston (UTHealth), Monash University and RIKEN Centre for Developmental Biology have used a combination of small molecules to generate mouse cells that can form bone and cartilage. This new method is easily scalable, and hence is a promising approach for the repair of human bone and cartilage defects. The research has just been published at http://dev.biologists.org/ in the scientific journal Development. Current strategies to regenerate bone and cartilage use adult stem cells that are committed to forming ...

Boston, MA – The main function of the immune system is to protect against diseases and infections. For unknown reasons our immune system attacks healthy cells, tissues and organs in a process called autoimmunity, which can result in diseases such as multiple sclerosis, type 1 diabetes, lupus or rheumatoid arthritis. There are currently no existing cures for these diseases. Now, in a new study by researchers at Brigham and Women's Hospital (BWH), a potential treatment maybe on the horizon. Researchers found that NAD+, a natural molecule found in living cells, plants ...

Boston, MA — A new, large-scale study has identified six new genetic variants associated with habitual coffee drinking. The genome-wide meta-analysis, led by Harvard School of Public Health and Brigham and Women's Hospital researchers, helps explain why a given amount of coffee or caffeine has different effects on different people and provides a genetic basis for future research exploring the links between coffee and health. "Coffee and caffeine have been linked to beneficial and adverse health effects. Our findings may allow us to identify subgroups of people most ...

OAK BROOK, Ill. – A magnetic resonance imaging (MRI) technique can detect signs of cognitive decline in the brain even before symptoms appear, according to a new study published online in the journal Radiology. The technique has the potential to serve as a biomarker in very early diagnosis of preclinical dementia. The World Health Organization estimates that dementia affects more than 35 million people worldwide, a number expected to more than double by 2030. Problems in the brain related to dementia, such as reduced blood flow, might be present for years but are ...

A new model for stroke care is being studied in rural Alberta to reduce inequities in health across communities. This model, presented at the Canadian Stroke Congress, shows how hospitals in rural areas can mimic the type of care that's often only available in larger centres. In geographically diverse Canada, stroke care can seem like tale of two cities – or more like a city and a small town. The ideal is stroke unit care, where a multidisciplinary staff of doctors, nurses and therapists collaborate on treatment and the road to recovery. In Alberta, that type of ...

People who have had a stroke or transient ischemic attack (TIA or mini-stroke) are at high risk for a second similar event or other serious medical problems for at least five years and need better follow up and strategies to prevent these problems, according to data presented at the Canadian Stroke Congress. At present, most stroke or TIA patients in Canada are followed closely by specialty clinics for about 90 days after an event, during the period they are considered at highest risk for a repeat event. If no such incident occurs during that period, they are often transferred ...

WASHINGTON, DC – October 7, 2014 -- Yogurt containing probiotic bacteria successfully protected children and pregnant women against heavy metal exposure in a recent study. Working with funding from the Bill and Melinda Gates Foundation, Canadian and Tanzanian researchers created and distributed a special yogurt containing Lactobacillus rhamnosus bacteria and observed the outcomes against a control group. The work is published this week in mBio, the online open-access journal of the American Society for Microbiology. A research team from the Canadian Centre for Human ...

Targets to eliminate tuberculosis (TB) by 2050 are more likely to be met if new vaccines are developed for adults and adolescents instead of for infants, according to new research published in the journal Proceedings of the National Academy of Sciences. Researchers at the London School of Hygiene & Tropical Medicine and the Stop TB Department at the World Health Organization found that a vaccine given to adolescents and adults in low- and middle-income countries could have a much larger impact on the burden of TB worldwide and is more likely to be cost-effective, even ...

Tiny vesicles containing protective substances which they transmit to nerve cells apparently play an important role in the functioning of neurons. As cell biologists at Johannes Gutenberg University Mainz (JGU) have discovered, nerve cells can enlist the aid of mini-vesicles of neighboring glial cells to defend themselves against stress and other potentially detrimental factors. These vesicles, called exosomes, appear to stimulate the neurons on various levels: they influence electrical stimulus conduction, biochemical signal transfer, and gene regulation. Exosomes are ...

New Rochelle, NY, October 6, 2014—Self-management of diabetes, including medication, nutrition, and lifestyle strategies, is essential for optimal glycemic control and minimizing complications of the disease. Education to teach and improve self-management skills is critical for success and, when delivered via the Internet, can lead to better glycemic control and enhanced diabetes knowledge compared to usual care, according to a Review article in Diabetes Technology & Therapeutics (DTT), a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article is ...

ALLENDALE, Mich. — Even among contemporary U.S. distance runners, men are still much more likely than women to have a competitive orientation, according to researchers at Grand Valley State University in Allendale, Michigan. The findings were published in the online journal, Evolutionary Psychology at http://www.epjournal.net/articles/u-s-masters-track-participation-reveals-a-stable-sex-difference-in-competitiveness/ The new research, led by Robert Deaner, associate professor of psychology at Grand Valley State, shows that, on average, American men participate at ...

Imagine being able to take a pill that lets you eat all of the ice cream, cookies, and cakes that you wanted – without gaining any weight. New research from USC suggests that dream may not be impossible. A team of scientists led by Sean Curran of the USC Davis School of Gerontology and the Keck School of Medicine of USC found a new way to suppress the obesity that accompanies a high-sugar diet, pinning it down to a key gene that pharmaceutical companies have already developed drugs to target. So far, Curran's work has been solely on the worm Caenorhabditis elegans ...

New Rochelle, NY, October 6, 2014—While poker is a game of chance, there is skill and decision-making involved, and the quality of those decisions depends on both knowledge of the game and the ability to control one's emotions. The results of a new study that evaluates emotionality, experience level, and success among online poker players are presented in Cyberpsychology, Behavior, and Social Networking, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article is available free on the Cyberpsychology, Behavior, and Social Networking website until ...

COLUMBUS, Ohio – Majorities of media researchers, parents and pediatricians agree that exposure to violent media can increase aggression in children, according to a new national study. The study found that 66 percent of researchers, 67 percent of parents and 90 percent of pediatricians agree or strongly agree that violent video games can increase aggressive behavior among children. Majorities of these groups also believed that children's aggressive behavior can be fueled by viewing violent video games, movies, TV programs, and Internet sites. However, fewer than ...

Imagine being able to tune the properties of a solid material just by flashing pulses of light on it, for example turning an insulator into a superconductor. That is just one potential payoff down-the-road from the physical phenomenon of electrons and atoms interacting with ultrashort pulses of light. The technology of ultrafast spectroscopy is a key to understanding this phenomenon and now a new wrinkle to that technology has been introduced by Berkeley Lab researchers. In a study led by Alessandra Lanzara of Berkeley Lab's Materials Sciences Division, time- and angle-resolved ...

Rabies causes acute inflammation of the brain, producing psychosis and violent aggression. The virus, which paralyzes the body's internal organs, is always deadly for those unable to obtain vaccines in time. Some 55,000 people die from rabies every year. For the first time, Tel Aviv University scientists have discovered the exact mechanism this killer virus uses to efficiently enter the central nervous system, where it erupts in a toxic explosion of symptoms. The study, published in PLOS Pathogens, was conducted by Dr. Eran Perlson and Shani Gluska of TAU's Sackler Faculty ...

Obesity is a risk factor for many health problems, but a new Penn Medicine study published this month in the journal Sleep suggests having a larger tongue with increased levels of fat may be a sign of obstructive sleep apnea (OSA) in obese adults. The researchers examined tongue fat in 31 obese adults who had OSA and 90 obese adults without the condition. All subjects underwent magnetic resonance imaging and the size and distribution of upper airway fat deposits in their tongue and upper airway muscles measured. "Previous studies showed that the human tongue has a high ...

A University of Texas at Arlington team exploring how neuron growth can be controlled in the lab and, possibly, in the human body has published a new paper in Nature Scientific Reports on how fluid flow could play a significant role. In a new study co-authored by Samarendra Mohanty, leader of the Biophysics and Physiology Lab in the College of Science, the researchers were able to use microfluidic stimulations to change the path of an axon at an angle of up to 90 degrees. Axons are the shafts of neurons, on the tips of which connections are made with other neurons or cells. ...

URBANA, Ill. – Hardly a day passes without pundits crying for leadership in the NFL commissioner and team owners, among high-ranking government officials, and in other public figures. If University of Illinois experts didn't have evidence that this valuable trait can be taught, they might join the collective swoon that's engulfing much of the country. But a new U of I study supports the idea that leaders are made, not born, and that leadership development follows a specific progression. Past research suggests that leadership is 30 percent genetic and 70 percent a result ...

WEST LAFAYETTE, Ind. - Purdue researchers have identified a set of genes that can be used to naturally boost the provitamin A content of corn kernels, a finding that could help combat vitamin A deficiency in developing countries and macular degeneration in the elderly. Professor of agronomy Torbert Rocheford and fellow researchers found gene variations that can be selected to change nutritionally poor white corn into biofortified orange corn with high levels of provitamin A carotenoids - substances that the human body can convert into vitamin A. Vitamin A plays key roles ...

NEW YORK (October 6, 2014) – Investigators at The Children's Hospital at Montefiore (CHAM) and Albert Einstein College of Medicine of Yeshiva University will present their latest research on neonatal lung disease, reducing wrong-patient errors in the NICU, hormonal contraception and more at the AAP Experience, the National Conference & Exhibition of the American Academy of Pediatrics. The AAP Experience will take place October 11-14 in San Diego, California. Judy Aschner, M.D., F.A.A.P., physician-in-chief, CHAM, professor of pediatrics and Michael I. Cohen, M.D., University ...

Hamilton, ON (October 6, 2014) – A research study out of McMaster University has found that only 40 per cent of Canadians exercise to cope with stress. The researchers analyzed data from Statistics Canada's Canadian Community Health Survey of nearly 40,000 Canadians 15 and older. Of 13 coping behaviours or strategies polled, exercise was ranked eighth, meaning people were more likely to cope with stress by problem-solving; looking on the bright side, trying to relax, talking to others, blaming oneself, ignoring stress or praying, rather than being active. "We know ...