Unlike comets, asteroids are not characterised by exhibiting a trail, but there are now ten exceptions. Spanish researchers have observed one of these rare asteroids from the Gran Telescopio Canarias (Spain) and have discovered that something happened around the 1st July 2011 causing its trail to appear: maybe internal rupture or collision with another asteroid. Ten asteroids have been located to date that at least at one moment have displayed a trail like that of comets. They are named main-belt comets (MBC) as they have a typical asteroidal orbit but display a trail ...

Philadelphia, PA, February 21, 2013 – A new study published in the March issue of The American Journal of Pathology suggests that cortical type 2 cannabinoid (CB2) receptors might serve as potential therapeutic targets for cerebral ischemia. Researchers found that the cannabinoid trans-caryophyllene (TC) protected brain cells from the effects of ischemia in both in vivo and in vitro animal models. In rats, post-ischemic treatment with TC decreased cerebral infarct size and edema. In cell cultures composed of rat cortical neurons and glia exposed to oxygen-glucose deprivation ...

Trudging from place to place with heavy weights on our backs is an everyday reality, from schoolchildren toting textbooks in backpacks to firefighters and soldiers carrying occupational gear. Muscle and skeletal damage are very real concerns. Now Tel Aviv University researchers say that nerve damage, specifically to the nerves that travel through the neck and shoulders to animate our hands and fingers, is also a serious risk. Prof. Amit Gefen of TAU's Department of Biomedical Engineering and Prof. Yoram Epstein of TAU's Sackler Faculty of Medicine, along with PhD student ...

BOSTON -- Epstein-Barr virus (EBV) affects more than 90 percent of the population worldwide and was the first human virus found to be associated with cancer. Now, researchers from Beth Israel Deaconess Medical Center (BIDMC) have broadened the understanding of this widespread infection with their discovery of a second B-cell attachment receptor for EBV. The new findings, which currently appear on-line in Cell Reports, reinforce current directions being taken in the development of a vaccine to guard against EBV, and raise important new questions regarding the virus's ...

Unusually high calcium levels in the blood can almost always be traced to primary hyperparathyroidism, an undertreated, underreported condition that affects mainly women and the elderly, according to a new study by UCLA researchers. The condition, which results from overactive parathyroid glands and includes symptoms of bone loss, depression and fatigue that may go undetected for years, is most often seen in African American women over the age of 50, the researchers discovered. The study, currently online in the Journal of Clinical Endocrinology and Metabolism, ...

Voracious absences at the center of galaxies, black holes shape the growth and death of the stars around them through their powerful gravitational pull and explosive ejections of energy. "Over its lifetime, a black hole can release more energy than all the stars in a galaxy combined," said Roger Blandford, director of the Kavli Institute for Particle Astrophysics and Cosmology and a member of the U.S. National Academy of Science. "Black holes have a major impact on the formation of galaxies and the environmental growth and evolution of those galaxies." Gravitational ...

WACO, Texas (Feb. 20, 2013) —Obesity, diabetes and other ailments plague impoverished communities at higher rates than the general United States population. In rural Texas border towns, or colonias, Mexican-American residents are at an even greater risk for chronic health problems. Physical activity has shown to reduce the risks for chronic health problems, but "few Mexican-American and lower-income Americans, including children, engage in physical activity that bring about health benefits," according to a study conducted by Baylor University and Texas A&M University ...

CAMBRIDGE, MA -- "The sounds uttered by birds offer in several respects the nearest analogy to language," Charles Darwin wrote in "The Descent of Man" (1871), while contemplating how humans learned to speak. Language, he speculated, might have had its origins in singing, which "might have given rise to words expressive of various complex emotions." Now researchers from MIT, along with a scholar from the University of Tokyo, say that Darwin was on the right path. The balance of evidence, they believe, suggests that human language is a grafting of two communication forms ...

This press release is available in French. Montreal, February 21, 2013 – Nobody can foresee disaster, but changing climate conditions are prompting smart communities increasingly to prepare for them with solid emergency response plans and protocols. Images as recent as those from the 2011 wildfire in Slave Lake, Alberta or as distant as those from the 1998 ice storm in Eastern Ontario and Quebec are distressing reminders that no area is immune from devastation, and reinforce the need to be prepared. Yet while emergency responses may originate through official channels, ...

MINNEAPOLIS – Contrary to other research, a new study found that the total level of antioxidants in people's diets is not related to their risk of developing stroke or dementia. The study is published in the February 20, 2013, online issue of Neurology®, the medical journal of the American Academy of Neurology. Antioxidants such as lycopene, beta-carotene and vitamins C and E are found in many foods. "These results are interesting because other studies have suggested that antioxidants may help protect against stroke and dementia," said study author Elizabeth E. Devore, ...

STONY BROOK, NY, February 20, 2013–As the nations of the world prepare to vote on measures to restrict international trade in endangered sharks in early March, a team of researchers has found that one of these species – the oceanic whitetip shark – regularly crosses international boundaries. Efforts by individual nations to protect this declining apex predator within their own maritime borders may therefore need to be nested within broader international conservation measures. The research team, which included researchers from Microwave Telemetry, Inc., the Cape Eleuthera ...

New Orleans, LA – Research conducted by a team of scientists from Columbia University College of Physicians and Surgeons and Dr. Nicolas Bazan, Boyd Professor and Director of the Neuroscience Center of Excellence at LSU Health Sciences Center New Orleans, found the novel use of a component of fish oil reduced brain trauma in newborn mice. The study reports that neonatal brain damage decreased by about 50% when a triglyceride lipid emulsion containing docosahexaenoic acid (DHA) was injected within two hours of the onset of ischemic stroke. The paper, n-3 Fatty Acid Rich ...

New York, NY (February 20, 2013) — Triglyceride lipid emulsions rich in an omega-3 fatty acid injected within a few hours of an ischemic stroke can decrease the amount of damaged brain tissue by 50 percent or more in mice, reports a new study by researchers at Columbia University Medical Center. The results suggest that the emulsions may be able to reduce some of the long-term neurological and behavioral problems seen in human survivors of neonatal stroke and possibly of adult stroke, as well. The findings were published today in the journal PLoS One. Currently, clot-busting ...

Sophia Antipolis, 21 February 2013: Over eating, sedentary lifestyles, cultural attitudes, and lack of prevention programmes are to blame for the rising epidemic of obesity in the Asia Pacific region. Overweight and obesity has quadrupled in China and societies still label people of healthy weight as poor. Prevention will be an important theme at the 19th Asian Pacific Congress of Cardiology held 21-24 February 2013 in Pattaya, Thailand. Experts from the European Society of Cardiology (ESC) will lead a one day collaborative programme on 23 February. Professor Kui-Hian ...

Tomatoes grown on organic farms accumulate higher concentrations of sugars, vitamin C and compounds associated with oxidative stress compared to those grown on conventional farms, according to research published February 20 in the open access journal PLOS ONE by Maria Raquel Alcantara Miranda and colleagues from the Federal University of Ceara, Brazil. In their study, the researchers compared the weights and biochemical properties of tomatoes from organic and conventional farms. They found that tomatoes grown on organic farms were approximately 40% smaller than those ...

People with disabilities are at a greater risk of being the victims of violence and of suffering mental ill health when victimized, according to research published February 20 in the open access journal PLOS ONE by Hind Khalifeh and colleagues from University College London and King's College London. A recent World Report on Disability highlighted violence as a leading cause of morbidity among disabled people. The research published today is the first to assess the extent to which people with disabilities experience different kinds of violence and the associated health ...

Mosquitoes are able to ignore the smell of the insect repellent DEET within a few hours of being exposed to it, according to research published February 20 in the open access journal PLOS ONE by James Logan, Nina Stanczyk and colleagues from the London School of Hygiene & Tropical Medicine, UK. Though most insects are strongly repelled by the smell of DEET, previous studies by Logan's research group have shown that some flies and mosquitoes carry a genetic change in their odor receptors that makes them insensitive to this smell. The new results reported in the PLOS ONE ...

Bariatric surgery is a well-documented treatment for obesity that leads to considerable weight loss and health improvement, but is the surgery successful in the long run in reducing costs associated with medical care for obesity? A team of researchers from the Johns Hopkins Bloomberg School of Public Health and School of Medicine recently undertook a multi-year analysis of health insurance claims data to examine this question and found that although the procedure's success rate is well documented, it does not have a similar impact on health care costs. The findings were ...

University of California, San Diego bioengineers have demonstrated in a study in pigs that a new injectable hydrogel can repair damage from heart attacks, help the heart grow new tissue and blood vessels, and get the heart moving closer to how a healthy heart should. The results of the study were published Feb. 20 in Science Translational Medicine and clear the way for clinical trials to begin this year in Europe. The gel is injected through a catheter without requiring surgery or general anesthesia -- a less invasive procedure for patients. There are an estimated 785,000 ...

New research by Case Western Reserve University School of Dental Medicine and Yale University School of Medicine finds that cultures commonly used to detect bacterial infections in low birth-weight newborns with early onset sepsis may actually overlook some germs. The research done at Case Western Reserve supports the need for multiple detection methods, such as DNA genomic analyses and other independent culture technologies, to identify bacteria that culturing may miss, said Yiping Han, professor of Periodontics and Reproductive Biology at the Case Western Reserve dental ...

Processing a prescription through an electronic ordering system can halve the likelihood of a drug error, and avert more than 17 million such incidents in US hospitals in one year alone, indicates research published online in the Journal of the American Medical Informatics Association. And if much more widely adopted than at present, the system has the potential to cut out 50 million drug errors a year, calculate the researchers. The US Institute of Medicine estimates that, on average, at least one mistake will be made with a hospital patient's medication every day. Computerised ...

The widely held belief that the UK supply of innovative new medicines has conspicuously dwindled in recent decades, is not borne out by the evidence, reveals research published in the online journal BMJ Open. In fact, the reverse may be true, the figures suggest. The prevailing view is that pharmaceutical industry innovation has been in decline, with fewer new drugs launched in recent decades than before—despite more cash being pumped into research and development—prompting a good deal of hand-wringing, say the authors. They wanted to find out whether this view was ...

DURHAM, NC – Bullied children grow into adults who are at increased risk of developing anxiety disorders, depression and suicidal thoughts, according to a study led by researchers at Duke Medicine. The findings, based on more than 20 years of data from a large group of participants initially enrolled as adolescents, are the most definitive to date in establishing the long-term psychological effects of bullying. Published online Feb. 20, 2013, in JAMA Psychiatry, the study belies a common perception that bullying, while hurtful, inflicts a fleeting injury that victims ...

Governments around the world should stop squandering resources fighting an "unwinnable war" against illegal drugs, such as cocaine and heroin. Instead, they should use the cash to curb antibiotic misuse, which poses a far more serious threat to human health, claims a leading ethicist in the Journal of Medical Ethics. Dr Jonny Anomaly, of Duke University, Durham in North Carolina, USA, says that concerted collective action is needed to tackle the excessive and casual prescribing of antibiotics, which has led to a worrying rise in resistance to these medicines. "Government ...

The walls of the human heart are a disorganised jumble of tissue until relatively late in pregnancy despite having the shape of a fully functioning heart, according to a pioneering study. A University of Leeds-led team developing the first comprehensive model of human heart development using observations of living foetal hearts found surprising differences from existing animal models. Although they saw four clearly defined chambers in the foetal heart from the eighth week of pregnancy, they did not find organised muscle tissue until the 20th week, much later than expected. Developing ...