New research from Karolinska Institutet in Sweden shows that men who take vitamin C supplements regularly run a higher risk of developing kidney stones. The study, which is published in the scientific periodical JAMA Internal Medicine, did not however observe an increased risk between kidney stones and multivitamins – which contain lower concentrations of vitamin C. The research is based on data from a large population-based study of men from Västmanland and Örebro counties, who were monitored for 11 years. A total of 23,355 men were identified who had no history of ...

Scientists at King's College London have demonstrated the ability to deliver a dried live vaccine to the skin without a traditional needle, and shown for the first time that this technique is powerful enough to enable specialised immune cells in the skin to kick-start the immunising properties of the vaccine. Funded by the Bill & Melinda Gates Foundation and published today in Proceedings of the National Academy of Sciences, researchers say although it is an early study this important technical advance offers a potential solution to the challenges of delivering live ...

LA JOLLA, Calif., February 4, 2013 – Nitric oxide, a gaseous molecule produced in the brain, can damage neurons. When the brain produces too much nitric oxide, it contributes to the severity and progression of stroke and neurodegenerative diseases such as Alzheimer's. Researchers at Sanford-Burnham Medical Research Institute recently discovered that nitric oxide not only damages neurons, it also shuts down the brain's repair mechanisms. Their study was published by the Proceedings of the National Academy of Sciences the week of February 4. "In this study, we've uncovered ...

Taxonomy – the discipline that defines and names groups of organisms – is a field of science that still employs many of the methods used during the beginnings of the discipline in the 18th century. Despite the increasing use of molecular information to delineate new species, the study of the morphology of specimens remains one of the major tasks of taxonomists. These studies often require first-hand examination of the reference specimens (so-called type material) deposited at museum collections around the globe - a time-consuming and laborious task. To facilitate this ...

Water tubing, a recreational activity in which participants ride an inner tube which is pulled behind a boat by a tow rope, has grown in popularity in recent years. Unfortunately, the number of injuries related to this activity has also increased. According to a new study by researchers at the Center for Injury Research and Policy of The Research Institute at Nationwide Children's Hospital, the annual number of water tubing-related injuries increased 250 percent over the 19-year study period, rising from 2,068 injuries in 1991 to 7,216 injuries in 2009. Given that more ...

Our ability to learn and form new memories is fully dependent on the brain's ability to be plastic – that is to change and adapt according to new experiences and environments. A new study from the Montreal Neurological Institute – The Neuro, McGill University, reveals that DCC, the receptor for a crucial protein in the nervous system known as netrin, plays a key role in regulating the plasticity of nerve cell connections in the brain. The absence of DCC leads to the type of memory loss experienced by Dr. Brenda Milner's famous subject HM. Although HM's memory loss resulted ...

HEALTH – Neutron imaging breast cancer . . . More precise optical imaging is vital for better diagnosis of breast cancer, which strikes one in eight women annually in the United States alone. Researchers at Oak Ridge National Laboratory and the University of Tennessee are using the neutron imaging beam line at ORNL's High Flux Isotope Reactor to evaluate neutron imaging as a powerful new tool for early detection. The study, led by Dr. Maria Cekanova of UT, working with imaging instrument scientist Hassina Bilheux, is using tissue from dogs treated at the UT College of ...

VIDEO: A new discovery might lead to alpha particle therapy for different types of cancer in the near future. Click here for more information. COLUMBIA, Mo. ¬— We've all heard that "it's not wise to use a cannon to kill a mosquito." But what if you could focus the cannon's power to concentrate power into a tiny space? In a new study, University of Missouri researchers have demonstrated the ability to harness powerful radioactive particles and direct them toward small cancer ...

By broadly comparing the DNA of children to that of elderly people, gene researchers have identified gene variants that influence lifespan, either by raising disease risk or by providing protection from disease. "This research is the first genome-wide, population-based study of copy number variations in children associated with human longevity," said study leader Hakon Hakonarson, M.D., Ph.D., director of the Center for Applied Genomics at The Children's Hospital of Philadelphia. The study appeared Jan. 30 in the open-access journal PLOS ONE. Copy number variations ...

New York City experienced a historic decline in crime rates during the 1990s, but it was not due to the implementation of CompStat or enhanced enforcement of misdemeanor offenses, according to an analysis by New York University sociologist David Greenberg. The study, which appears in the journal Justice Quarterly, did not find a link between arrests on misdemeanor charges and drops in felonies, such as homicides, robberies, and assaults. In addition, the analysis revealed no significant drop in violent or property crime attributable to the NYPD's introduction of CompStat ...

Gravity affects the ecology and evolution of every living organism. In plants, the general response to gravity is well known: their roots respond positively, growing down, into the soil, and their stems respond negatively, growing upward, to reach the sunlight. But how do plants sense gravity and how do they direct or signal their cells to grow in response to it? Although botanists understand a great deal about how this works, a recent article in the recent issue of the American Journal of Botany reviews what we know so far, from mechanical to genetic approaches; it reveals ...

CAMBRIDGE, MA -- A typical cancer cell has thousands of mutations scattered throughout its genome and hundreds of mutated genes. However, only a handful of those genes, known as drivers, are responsible for cancerous traits such as uncontrolled growth. Cancer biologists have largely ignored the other mutations, believing they had little or no impact on cancer progression. But a new study from MIT, Harvard University, the Broad Institute and Brigham and Women's Hospital reveals, for the first time, that these so-called passenger mutations are not just along for the ride. ...

ANN ARBOR—Women in developed countries survive roughly 10 years longer after a breast cancer diagnosis compared to women in poor-to-middle-income countries, a new University of Michigan study suggests. The report demonstrates the lack of access to good health care faced by women in poor countries, said the study's principal investigator Rajesh Balkrishnan, an associate professor at the U-M schools of Pharmacy and Public Health. Early diagnosis and sustained treatment were the biggest hurdles and also the main indicators of patient survival, he said. Balkrishnan and ...

VIDEO: NIMH's Dr. Maura Furey talks about how a functional brain imaging measure may help predict a patient's response to a rapid-acting experimental antidepressant. Click here for more information. A telltale boost of activity at the back of the brain while processing emotional information predicted whether depressed patients would respond to an experimental rapid-acting antidepressant, a National Institutes of Health study has found. "We have discovered a potential ...

Healthy eating not only promotes growth and development, but also provides important opportunities for children to socialize during meals. A new, comprehensive analysis of feeding behavior in children with autism spectrum disorders (ASD) indicates that these children are five times more likely to have a feeding problem, including extreme tantrums during meals, severe food selectivity and ritualistic mealtime behaviors. Researchers at Marcus Autism Center and the Department of Pediatrics at Emory University School of Medicine conducted a comprehensive meta-analysis of ...

A new NOAA research report finds that both fish populations and commercial and recreational anglers have benefited from "no-take" protections in the Tortugas Ecological Reserve in the Florida Keys National Marine Sanctuary. The report, "An Integrated Biogeographic Assessment of Reef Fish Populations and Fisheries in Dry Tortugas: Effects of No-take Reserves," is the first to evaluate how the 151-square nautical mile Tortugas Ecological Reserve affects the living marine resources of the region and the people whose livelihoods are connected to them. The report's analysis ...

Boston, MA – Having adequate levels of vitamin D during young adulthood may reduce the risk of adult-onset type 1 diabetes by as much as 50%, according to researchers at Harvard School of Public Health (HSPH). The findings, if confirmed in future studies, could lead to a role for vitamin D supplementation in preventing this serious autoimmune disease in adults. The study was published online February 3, 2013 and will appear in the March 1 print edition of the American Journal of Epidemiology. "It is surprising that a serious disease such as type 1 diabetes could perhaps ...

According to a new technical report, the effects of climate change will continue to threaten the health and vitality of U.S. coastal communities' social, economic and natural systems. The report, Coastal Impacts, Adaptation, and Vulnerabilities: a technical input to the 2013 National Climate Assessment, authored by leading scientists and experts, emphasizes the need for increased coordination and planning to ensure U.S. coastal communities are resilient against the effects of climate change. The recently-released report examines and describes climate change impacts on ...

LA JOLLA, CA – February 4, 2013 – A team led by scientists at The Scripps Research Institute (TSRI) has identified specific cellular events that appear key to lupus, a debilitating autoimmune disease that afflicts tens of millions of people worldwide. The findings suggest that blocking this pathway in lupus-triggering cells could be a potent weapon against the disease. In the new study, described in an online Early Edition of the Proceedings of the National Academy of Sciences the week of February 4, 2013, the researchers determined that the absence of a certain type ...

(Edmonton) A University of Alberta polar bear researcher along with eleven international co-authors are urging governments to start planning for rapid Arctic ecosystem change to deal with a climate change catastrophe for the animals. U of A professor Andrew Derocher co-authored a policy perspective in the journal Conservation Letters urging governments with polar bear populations to accept that just one unexpected jump in Arctic warming trends could send some polar bear populations into a precipitous decline. "It's a fact that early sea ice break-up and late ice freeze-up ...

Cyclone Felleng traveled through the Mozambique Channel during the week of Jan. 28, 2013 and emerged south into the Southern Indian Ocean where it transitioned into a cold core low pressure area. NASA's TRMM satellite captured a look at the rainfall rates occurring in Felleng as it was making that transition on Feb. 1. NASA's Tropical Rainfall Measuring Mission (TRMM) satellite flew over Cyclone Felleng on Feb. 1 at 1648 UTC (11:48 a.m. EST) as it was exiting the Mozambique Channel and becoming extra-tropical. TRMM measured a small area of heavy rainfall east of the center ...

COLUMBIA, Mo. – Researchers long have evaluated the roles parents play in children's development. Now, researchers at the University of Missouri have found that mothers' directiveness, the extent to which they try to control the content and pace of young children's play, varies based on the children's ages and the mothers' ethnicities. In addition, the study found that the more directive the mothers were during play, the less engaged children were with them and the more negative emotion the children displayed toward their mothers. "Children flourish when they have opportunities ...

BUFFALO, N.Y. – A five-year study by researchers at three universities has established that providing tangible assistance to others protects our health and lengthens our lives. This, after more than two decades of research failed to establish that the same benefits accrue to the recipients of such help. Principal investigator Michael J. Poulin, PhD, assistant professor of psychology at the University at Buffalo, says, "This study offers a significant contribution to the research literature on the relationship between social environment and health, and specifically to ...

OAK BROOK, Ill. – The underlying medical conditions facing young adults who undergo computed tomography (CT) exams represent a significantly greater health risk than that of radiation-induced cancer from CT, according to a new study published online in the journal Radiology. CT utilization has grown approximately 10 percent annually over the last 15 years in the U.S., raising fears of an increase in radiation-induced cancers. However, discussions of radiation-induced cancer risk often fail to take into account the condition of the patients being imaged, according to ...

San Diego, CA, February 5, 2013 – Understanding the relationships between lifestyle behaviors and health outcomes can be enhanced by the use of wearable cameras, concludes a collection of studies in a special theme issue of the American Journal of Preventive Medicine. Three studies report on the latest preventive medicine research using Microsoft's wearable camera, the SenseCam. "Wearable cameras and their associated software analysis tools have developed to the point that they now appear well suited to measure sedentary behavior, active travel, and nutrition-related ...