(TORONTO, Canada – May 28, 2014) – The largest clinical study to evaluate breast cancer screening of female survivors of childhood Hodgkin lymphoma (HL), who are at increased risk because they received chest radiation, shows that magnetic-resonance imaging (MRI) detected invasive breast tumours at very early stages, when cure rates are expected to be excellent. The finding, published online today in the American Cancer Society Journal Cancer (doi: doi/10.1002/cncr.28747), underscores the need for at-risk childhood HL survivors and primary care physicians to be aware ...

Swimming fish do not appear to use their collision warning system in the same way as flying insects, according to new research from Lund University in Sweden that has compared how zebra fish and bumblebees avoid collisions. The fish surprised the researchers. All animals need some form of warning system that prevents them colliding with objects in their surroundings. The warning system helps them to continually regulate their speed and judge their distance from objects. For flying and swimming creatures this is an extra challenge because they also have to deal with winds ...

Researchers from the Department of Biological Sciences at the National University of Singapore (NUS) Faculty of Science have discovered that a Southeast Asian species of treefrog practices parental care to increase the likelihood of survival of its offspring. Chiromantis hansenae (C. hansenae), is currently the only species in the treefrog family in Southeast Asia that is known to exhibit such behaviour. This discovery was recently published as the cover story in a popular magazine of nature and science, Natural History, in May 2014. The study investigates parental care ...

Biomedical engineering researchers have developed daisy-shaped, nanoscale structures that are made predominantly of anti-cancer drugs and are capable of introducing a "cocktail" of multiple drugs into cancer cells. The researchers are all part the joint biomedical engineering program at North Carolina State University and the University of North Carolina at Chapel Hill. "We found that this technique was much better than conventional drug-delivery techniques at inhibiting the growth of lung cancer tumors in mice," says Dr. Zhen Gu, senior author of the paper and an assistant ...

Spanish researchers have demonstrated that the relationship between marathon running times and the age of the athlete is U-shaped. The work shows the unusual fact that it takes an 18-year-old athlete the same amount of time to finish a marathon as a 55- or 60-year-old runner. The 42,195 metres that are nowadays known as the marathon were run for the first time at the London Olympic Games of 1908. Since then, many athletes have completed this race and there has also been numerous scientific studies conducted on endurance runners. Up to now, the majority of these works ...

The Eastern Himalayas are home to more than 360 different songbird species, most of which are to be found nowhere else on the planet. This makes the region extending from eastern Nepal to the borderlands of China, India, and Myanmar unique and one of the most important hot spots for biological diversity in the western hemisphere. A recent research paper describes how this impressive bird community came about millions of years ago, emphasizing both the uniqueness and biological significance of this remote area. "As the Himalayan mountain range was formed, a profusion of ...

Every once in a while in the U.S., bacterial meningitis seems to crop up out of nowhere, claiming a young life. Part of the disease's danger is the ability of the bacteria to evade the body's immune system, but scientists are now figuring out how the pathogen hides in plain sight. Their findings, which could help defeat these bacteria and others like it, appear in the Journal of the American Chemical Society. Linda Columbus and colleagues explain that the bacteria Neisseria meningitidis, one cause of meningitis, and its cousin Neisseria gonorrhoeae, which is responsible ...

This news release is available in German. Lung cancer is a serious condition. Once patients are diagnosed with it, chemotherapy is often their only hope. But nobody can accurately predict whether or not this treatment will help. To start with, not all patients respond to a course of chemotherapy in exactly the same way. And then there's the fact that the systems drug companies use to test new medications leave a lot to be desired. "Animal models may be the best we have at the moment, but all the same, 75 percent of the drugs deemed beneficial when tested on animals ...

A recent review of hundreds of chemical analyses of Moon rocks indicates that the amount of water in the Moon's interior varies regionally – revealing clues about how water originated and was redistributed in the Moon. These discoveries provide a new tool to unravel the processes involved in the formation of the Moon, how the lunar crust cooled, and its impact history. This is not liquid water, but water trapped in volcanic glasses or chemically bound in mineral grains inside lunar rocks. Rocks originating from some areas in the lunar interior contain much more water ...

Washington, DC, May 27, 2014 – Healthcare-associated vancomycin-resistant enterococcus (VRE), methicillin-resistant Staphylococcus aureus (MRSA), Clostridium difficile (CD), and other multidrug-resistant organisms (MDRO) were decreased among patients after adding ultraviolet environmental disinfection (UVD) to the cleaning regimen, according to a study published in the June issue of the American Journal of Infection Control, the official publication of the Association for Professionals in Infection Control and Epidemiology (APIC). In this retrospective study led by the ...

A plant breeder discovers his experimental crops have been "contaminated" with genes from a neighboring field. New nasty weeds sometimes evolve directly from natural crosses between domesticated species and their wild relatives. A rare plant is threatened due to its small population size and restricted range. What do all these situations have in common? They illustrate the important role of gene flow among populations and its potential consequences. Although gene flow was recognized by a few scientists as a significant evolutionary force as early as the 1940s, its relative ...

PROVIDENCE, R.I. [Brown University] — To maximize HIV prevention efforts in South Africa and perhaps the broader region, public health officials should consider testing for other sexually transmitted infections when they test for HIV, according to a new paper in the journal Sexually Transmitted Infections. STIs can make HIV easier to transmit even after antiretroviral therapy has begun, so rooting out STI co-infections in patients should improve HIV prevention. The new study led by Brown University public health researchers emphasizes that sooner is indeed better than ...

AUSTIN, Texas — Scientists from The University of Texas at Austin and five other institutions have discovered that the more diverse the diet of a fish, the less diverse are the microbes living in its gut. If the effect is confirmed in humans, it could mean that the combinations of foods people eat can influence the diversity of their gut microbes. The research could have implications for how probiotics and diet are used to treat diseases associated with the bacteria in human digestive systems. A large body of research has shown that the human microbiome, the collection ...

For the first time in roughly 2 million years, melting Arctic sea ice is connecting the north Pacific and north Atlantic oceans. The newly opened passages leave both coasts and Arctic waters vulnerable to a large wave of invasive species, biologists from the Smithsonian Environmental Research Center assert in a commentary published May 28 in Nature Climate Change. Two new shipping routes have opened in the Arctic: the Northwest Passage through Canada, and the Northern Sea Route, a 3000-mile stretch along the coasts of Russia and Norway connecting the Barents and Bering ...

The open-access, open-data journal GigaScience (published by BGI and Biomed Central), announces today the publication of an article on the genome sequencing of 3000 rice strains along with the release of this entire dataset in a citable format in journal's affiliated open-access database, GigaDB. The publication and release of this enormous data set (which quadruples the current amount of publicly available rice sequence data) coincides with World Hunger Day to highlight one of the primary goals of this project— to develop resources that will aid in improving global food ...

WASHINGTON, DC, May 27, 2014 — A new study suggests that high-status female college students employ "slut discourse" — defining their styles of femininity and approaches to sexuality as classy rather than trashy or slutty — to assert class advantage and put themselves in a position where they can enjoy sexual exploration with few social consequences. "Viewing women only as victims of men's sexual dominance fails to hold women accountable for the roles they play in reproducing social inequalities," said lead author Elizabeth A. Armstrong, an associate professor of sociology ...

Birds come in astounding variety—from hummingbirds to emus—and behave in myriad ways: they soar the skies, swim the waters, and forage the forests. But this wasn't always the case, according to research by scientists at the University of Chicago and the Field Museum. The researchers found a striking lack of diversity in the earliest known fossil bird fauna (a set of species that lived at about the same time and in the same habitat). "There were no swans, no swallows, no herons, nothing like that. They were pretty much all between a sparrow and a crow," said Jonathan ...

London's international fish trade can be traced back 800 years to the medieval period, according to new research published today in the journal Antiquity. The research, led by archaeologists from UCL, Cambridge and UCLan, provides new insight into the medieval fish trade and the globalisation of London's food supply. Archaeologists analysed data from nearly 3,000 cod bones found in 95 different excavations in and around London. They identified a sudden change in the origin of the fish during the early 13th century, indicating the onset of a large-scale import trade. Lead ...

CORVALLIS, Ore. – A new study of the colorful "eyespots" on the wings of some butterfly species is helping to address fundamental questions about evolution that are conceptually similar to the quandary Aristotle wrestled with about 330 B.C. – "which came first, the chicken or the egg?" After consideration, Aristotle decided that both the egg and the chicken had always existed. That was not the right answer. The new Oregon State University research is providing a little more detail. The study, published today in Proceedings of the Royal Society B, actually attempts to ...

In a personal view published on bmj.com today, a professor of public health at a leading university thinks there should be health warning labels on sugary drinks. Professor Simon Capewell, professor at the University of Liverpool, highlights that the State of California is considering a new health bill. One which will see sugary drinks labelled with health warnings, vending machines to bear warning labels, and fines of between $50 and $500 per failed inspection". Professor Capewell thinks this is a good idea, and one that the UK public would support. He says that ...

A policy of higher NHS spending in deprived areas compared with affluent areas is associated with a reduction in absolute health inequalities from causes amenable to healthcare in England, suggests a study published on bmj.com today. In 1999, the government introduced a new 'health inequalities' objective for the allocation of NHS resources in England, which resulted in greater NHS spending in deprived areas with the worst health outcomes. But it is not known whether this policy was successful in contributing to a reduction in health inequalities. So researchers based ...

A school-based scheme to encourage children to eat healthily and be active has had little effect, conclude researchers in a study published on bmj.com today. The findings have relevance for researchers, policy makers, public health practitioners, and doctors, and they suggest that more intense interventions may be required. Low levels of physical activity and of fruit and vegetable consumption in childhood are associated with adverse health outcomes. School based interventions have the potential to reach the vast majority of children, and evidence reviews have suggested ...

Concerns about guardianship and privacy can discourage clinics from testing children for HIV, according to new research from Zimbabwe published this week in PLOS Medicine. The results of the study, by Rashida A. Ferrand of the London School of Hygiene & Tropical Medicine and colleagues, provide much-needed information on how to improve care of this vulnerable population. More than three million children globally are living with HIV (90% in sub-Saharan Africa) and in 2011 an estimated 1000 infant infections occurred every day. HIV acquired through mother-to-child transmission ...

In a PLOS Medicine guest editorial, Paul Glasziou, Professor of Evidence-Based Medicine at Bond University in Australia, explores how open access publications could help moderate and reduce the vast waste of global medical research. Continuing on from his previous work, which highlighted how most of the world's expenditure on medical research was thrown away, Glasziou outlines how bad the situation is and suggests how it might be improved. Subscription-based academic journals make money by through copyrights assigned by authors to publishers who lock the articles behind ...

Cold Spring Harbor, NY – We all deal with stress differently. For many of us, stress is a great motivator, spurring a renewed sense of vigor to solve life's problems. But for others, stress triggers depression. We become overwhelmed, paralyzed by hopelessness and defeat. Up to 20% of us will struggle with depression at some point in life, and researchers are actively working to understand how and why this debilitating mental disease develops. Today, a team of researchers at Cold Spring Harbor Laboratory (CSHL) led by Associate Professor Bo Li reveals a major insight ...