NEW YORK, Feb. 17, 2011 – A research group led by a New York University School of Medicine scientist discovered a genetic variant that allows a fish in the Hudson River to live in waters heavily polluted by PCBs. In a study published in the February 18, 2011, online issue of Science, they report that a population of Hudson River fish apparently evolved rapidly in response to the toxic chemicals, which were first introduced in 1929, and were banned fifty years later. PCBs, or polychlorinated biphenyls, were used in hundreds of industrial and commercial applications, especially ...

(Millbrook, N.Y. – Feb 17, 2011) Forest biomass could replace as much as one quarter of the liquid fossil fuel now being used for industrial and commercial heating in the Northeastern United States. That's according to a new report released today by the Cary Institute of Ecosystem Studies. But the report also has sharp caveats: The potential for forest biomass varies widely within the region, and forest resources must be carefully managed to protect the other important services and goods they provide. Under the right circumstances, however, the report found that forest ...

Researchers at the University of California, San Diego School of Medicine have identified the motors that move non-infectious prion proteins (PrPC) – found within many mammalian cells – up and down long, neuronal transport pathways. Identifying normal movement mechanisms of PrPC may help researchers understand the spread of infectious prions within and between neurons to reach the brain, and aid in development of therapies to halt the transport. Their study is published in the February 18 edition of the journal Cell. The small prion protein is found in the cell membrane ...

For 30 years, two General Electric facilities released about 1.3 million pounds of polychlorinated biphenyls (PCBs) into New York's Hudson River, devastating and contaminating fish populations. Some 50 years later, one type of fish—the Atlantic tomcod—has not only survived but appears to be thriving in the hostile Hudson environment. Researchers from Woods Hole Oceanographic Institution (WHOI) have joined colleagues from New York University (NYU) and NOAA to investigate this phenomenon and report that the tomcod living in the Hudson River have undergone a rapid evolutionary ...

New findings from researchers at New York Medical College suggest that when Social Security benefits are improved, people over the age of 65 benefit most, and may even live longer. According to a new study published in the Journal of Public Health Policy, Americans over the age of 65 experienced steep declines in the rate of mortality in the periods that followed the founding of and subsequent improvements to Social Security. The authors urge that as Congress and the President discuss changes to Social Security they consider the benefit of reduced mortality and improved ...

Deakin University medical scientists have created the world's first cancer stem cell-targeting chemical missile, placing them a step closer to creating a medical 'smart bomb' that would seek out and eradicate the root of cancer cells. The Deakin researchers have worked with scientists in India and Australia to create the world's first RNA aptamer, a chemical antibody that acts like a guided missile to seek out and bind only to cancer stem cells. The aptamer has the potential to deliver drugs directly to the stem cells (the root of cancer cells) and also to be used to ...

The only acute treatment for a stroke currently available is thrombolysis. This uses drugs that dissolve the blood clot responsible for the stroke, but it only reaches around 10 per cent of stroke patients in time to prevent lasting damage. For other patients, there are no other effective drugs that reduce the loss of brain function following a stroke. Researchers at the Laboratory for Experimental Brain Research in Lund, together with American researchers, have discovered a substance that reinforces the brain's self-healing functions after a stroke. It has long been ...

Ensuring the sustainability of the products we use is a fundamental challenge for society, and is becoming ever more important for consumers and companies. A researcher from the University of Santiago de Compostela (USC) has come up with an eco-labelling system that provides environmental information, showing the carbon footprints generated by the goods and services in question during their "life cycle". "This study provides an alternative means of efficiently communicating environmental information to companies, consumers and interested parties – the eco-label. This ...

A unique strategy developed by researchers at Cardiff University is opening up new possibilities for improving medical imaging. Medical imaging often requires getting unnatural materials such as metal ions into cells, a process which is a major challenge across a range of biomedical disciplines. One technique currently used is called the 'Trojan Horse' in which the drug or imaging agent is attached to something naturally taken up by cells. The Cardiff team, made of researchers from the Schools of Chemistry and Biosciences, has taken the technique one step further with ...

Radio frequency exposure from cell phone use does not appear to increase the risk of developing brain cancers by any significant amount, a study by University of Manchester scientists suggests. The researchers used publically available data from the UK Office of National Statistics to look at trends in rates of newly diagnosed brain cancers in England between 1998 and 2007. The study, published in the journal Bioelectromagnetics, reported no statistically significant change in the incidence of brain cancers in men or women during the nine-year time period under observation. "Cell ...

New York, NY, 17 February 2011 – Your emotional response to challenging situations could predict how your body responds to stress, according to research published this month in the journal Brain, Behavior, and Immunity. "People who reported high levels of anger and anxiety after performing a laboratory-based stress task showed greater increases in a marker of inflammation, than those who remained relatively calm," said Dr Judith Carroll, who conducted the study at the University of Pittsburgh. "This could help explain why some people with high levels of stress experience ...

A study conducted at the University of Granada and at the University Hospital San Cecilio revealed that preterm mothers' milk contains low concentrations of coenzyme Q10. This is a complex of great medical importance, due both to its antioxidant capacity and to its role as a component of the electron transport chain, among other functions. This study counted with the participation of a group of researchers of the Institute of Nutrition and Food Technology "José Mataix" (from to the Andalusian Government research groups AGR-145 and CTS-627), and with the collaboration ...

Children with chronic health conditions are 88% more likely to suffer physical abuse than healthy children, according to research in the March issue of Acta Paediatrica. They are also 154% more likely to suffer a combination of physical abuse and exposure to intimate partner violence than their healthy school friends. Researchers from Karlstad University, Sweden, analysed 2,510 questionnaires completed anonymously by children aged ten, 12 and 15 from 44 schools. Nearly one in four had at least one chronic health condition, including visual, hearing or speech problems, ...

The team of Professor Burkhard Luy from KIT and Junior Professor Stefan F. Kirsch from the TUM has now shown for the first time that certain NMR parameters, the so-called residual dipolar couplings (RDCs), can make a significant contribution towards determining the constitution of chemical compounds when traditional methods fail. To do this they embedded molecules of the compound in a gel which slightly constricts their mobility. By stretching the gel, the molecules can be aligned along a preferred orientation. While residual dipolar couplings average out in solution, they ...

Depending on the level of smoking and leisure time exercise, vitamin E supplementation may decrease or increase, or may have no effect, on the risk of pneumonia, according to a study published in Clinical Epidemiology. In laboratory studies, vitamin E has influenced the immune system. In several animal studies vitamin E protected against viral and bacterial infections. However, the importance of vitamin E on human infections is not known. Dr. Harri Hemila and Professor Jaakko Kaprio, of the University of Helsinki, Finland, studied the effect of vitamin E on the risk ...

CHICAGO—Afraid of becoming disabled in old age, not being able to dress yourself or walk up and down the stairs? Staying physically active before symptoms set in could help. But so could going out to eat, playing bingo and taking overnight trips. According to research conducted at Rush University Medical Center, higher levels of social activity are associated with a decreased risk of becoming disabled. The study has just been posted online and will be published in the April issue of the Journal of Gerontology: Medical Sciences. "Social activity has long been recognized ...

Feb. 17, 2011– A new treatment approach which uses tiny bursts of electricity to reawaken paralyzed muscles "significantly" reduced disability and improved grasping in people with incomplete spinal cord injuries, beyond the effects of standard therapy, newly published research shows. In a study published online in the journal Neurorehabilitation and Neural Repair, Toronto researchers report that functional electrical stimulation (FES) therapy worked better than conventional occupational therapy alone to increase patients' ability to pick up and hold objects. FES therapy ...

WASHINGTON – Lifestyle changes—such as getting more exercise, time in nature, or helping others—can be as effective as drugs or counseling to treat an array of mental illnesses, according to a new paper published by the American Psychological Association. Multiple mental health conditions, including depression and anxiety, can be treated with certain lifestyle changes as successfully as diseases such as diabetes and obesity, according to Roger Walsh, M.D., PhD. of the University of California, Irvine's College of Medicine. Walsh reviewed research on the effects of what ...

VIDEO: Although, in the majority of cases, the localized presence of Neisseria meningitidis in the throat has no consequence, it can sometimes lead to meningitis or septicaemia. The seriousness of these... Click here for more information. Although, in the majority of cases, the localized presence of Neisseria meningitidis in the throat has no consequence, it can sometimes lead to meningitis or septicaemia. The seriousness of these two infections is driving researchers from ...

Young children living in urban public housing spend more time playing outdoors than other urban children, according to researchers at Rice University, Columbia University and Princeton University. Contrary to the expectations of the researchers, who hypothesized that children living in poorer circumstances would be playing outside less, the study found that 5-year-olds living in public housing played outside 13 percent more per day, on average, than did other urban 5-year-olds. Children living in places of high physical disorder -- areas with visible graffiti, trash, ...

The research could eventually lead to new approaches for controlling sleeping sickness in humans and wasting diseases in livestock which are caused by trypanosomes carried by the bloodsucking tsetse fly. Biologists believe that sexual reproduction evolved very early and is now ubiquitous in organisms with complex cell structure (the eukaryotes, essentially all living organisms except bacteria). However, real evidence is lacking for a large section of the evolutionary tree. Trypanosomes represent an early and very distant branch of the eukaryote tree of life and ...

Scientists at The Wistar Institute and the University of Pennsylvania School of Medicine report the discovery of protein markers that could provide physicians with the first reliable blood test to predict ectopic pregnancies. Their findings are presented in the February 16 issue of the Journal of Proteome Research, currently available online. In a related small-scale study of clinical samples, published recently in the journal Fertility and Sterility, the researchers found that one of the proteins—ADAM12—showed a nearly 97 percent correlation with ectopic pregnancy. Ectopic ...

Champaign, IL – February 4, 2011 - An article in the current issue of Global Change Biology Bioenergy reviews the suitability of Agave as a bioenergy feedstock that can sustain high productivity in spite of poor soil and stressful climatic conditions accompanying climate change. Agave, which grows successfully under hot, dry conditions, is currently used in the production of beverages, food, and fiber, and has only recently been considered a promising source of biofuel. Garcia-Moya and colleagues (2011) were able to assess Agave's potential as a biomass crop by reviewing ...

U.S. military officials should improve efforts to identify those at-risk and improve both the quality and access to behavioral health treatment in response to a sharp rise in suicide among members of nation's armed forces, according to a new RAND Corporation study. Needed changes include making service members aware of the advantages of using behavioral health care, ensuring that providers and chaplains are delivering high quality care, and assuring that service members can receive confidential help for their problems, according to the report. "Efforts should focus ...

Cigarette smoking has been linked with overproduction of mucus associated with chronic bronchitis, according to a study conducted by researchers in New Mexico. The study indicates cigarette smoke suppresses a protein that causes the natural death of mucus-producing cells in the airways of bronchitis patients. The findings were published online ahead of the print edition of the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine. "Although it is known that chronic mucus secretion is a hallmark of chronic bronchitis, the mechanisms underlying ...