EAU to release policy statement on live surgery ethics
2013-02-11
During the final day of the 28th Annual EAU Congress, which will take place on 15-19 March 2013 in Milan, the European Association of Urology will release its official policy statement on live surgery ethics. The statement and accompanying commentary will be delivered by Mr. Keith Parsons (Liverpool, UK), who chairs the EAU Guidelines Office and is a member of the working panel which was tasked with formulating the policy.
Chaired by Prof. Walter Artibani, EAU Executive Member Science, the live surgery working panel has been developing the policy since March 2012.
The ...
Bisphenol A affects sex-specific reproductive behaviors in a monogamous animal species
2013-02-11
Parents, teachers and psychologists know boys and girls behave differently. However, that difference isn't taken into account by most methods used to assess the risk to children from chemical exposure, according to Cheryl Rosenfeld, associate professor of biomedical sciences in the University of Missouri's Bond Life Sciences Center. A series of experiments by Rosenfeld studied the effects of prenatal exposure to bisphenol A (BPA) on later reproductive-associated behaviors using a socially and genetically monogamous rodent, the California mouse, which may better mirror most ...
Is lead poisoning behind some juvenile crime?
2013-02-11
Lead is a common element but is found in old paints (including those once used on children's toys), soil, old piping, water, and the atmosphere from lead-containing vehicular fuels, even drinking vessels. At high dose it is lethal but also causes seemingly trivial symptoms such as headaches. However, in children lead can also lead to irreversible damage to the organs, the kidneys in particular, and the nervous system including the brain. Early detection to contaminated sources is important to prevent children coming to harm but exposure is not always apparent. The effects ...
Stem cell breakthrough could lead to new bone repair therapies on nanoscale surfaces
2013-02-11
Scientists at the University of Southampton have created a new method to generate bone cells which could lead to revolutionary bone repair therapies for people with bone fractures or those who need hip replacement surgery due to osteoporosis and osteoarthritis.
The research, carried out by Dr Emmajayne Kingham at the University of Southampton in collaboration with the University of Glasgow and published in the journal Small, cultured human embryonic stem cells on to the surface of plastic materials and assessed their ability to change.
Scientists were able to use the ...
Artificial atoms allow for magnetic resonance on individual cells
2013-02-11
Researchers from the Institute of Photonic Sciences (ICFO), in collaboration with the CSIC and Macquarie University in Australia, have developed a new technique, similar to the MRI but with a much higher resolution and sensitivity, which has the ability to scan individual cells. In an article published in Nature Nanotech, and highlighted by Nature, ICFO Prof. Romain Quidant explains how this was accomplished using artificial atoms, diamond nanoparticles doped with nitrogen impurity, to probe very weak magnetic fields such as those generated in some biological molecules.
The ...
1 disease, 2 mechanisms
2013-02-11
While prostate cancer is the most common cancer in elderly Western men it also, but more rarely, strikes patients aged between 35 and 50. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, in collaboration with several other research teams in Germany*, have discovered that such early-onset prostate cancers are triggered by a different mechanism from that which causes the disease at a later age. Their findings are published today in Cancer Cell, and might have important consequences for the diagnosis and treatment of prostate cancer in ...
Large study shows substance abuse rates higher in teenagers with ADHD
2013-02-11
PITTSBURGH, Feb. 11, 2013 – A new study published online in the Journal of the American Academy of Child and Adolescent Psychiatry revealed a significantly higher prevalence of substance abuse and cigarette use by adolescents with attention deficit hyperactivity disorder (ADHD) histories than in those without ADHD. Researchers from the University of Pittsburgh School of Medicine and Western Psychiatric Institute and Clinic of UPMC as well as six other health centers across the United States also found that, contrary to previous findings, current medications for ADHD do ...
New American Chemical Society video highlights 5 of chocolate's sweet benefits
2013-02-11
Just in time for Valentine's Day, the American Chemical Society (ACS), the world's largest scientific society, released a new Bytesize Science video today featuring five chemistry facts that highlight why chocolate, in moderation, may be good for you. The video, produced by the ACS Office of Public Affairs, is available at www.BytesizeScience.com
The video explains how a bar of chocolate contains hundreds of compounds, many with beneficial properties. Among the video's "sweet" facts:
Chocolate may improve your mood, and not just because of its delicious flavor. Chocolate ...
Tree die-off triggered by hotter temperatures
2013-02-11
Washington, DC—A team of scientists, led by researchers at Carnegie's Department of Global Ecology, has determined that the recent widespread die-off of Colorado trembling aspen trees is a direct result of decreased precipitation exacerbated by high summer temperatures. The die-off, triggered by the drought from 2000-2003, is estimated to have affected up to 17% of Colorado aspen forests. In 2002, the drought subjected the trees to the most extreme growing season water stress of the past century.
While often not killing the trees directly, the drought damaged the ability ...
Price for hip replacement highly variable, hard to obtain
2013-02-11
A "secret shopper" study conducted by researchers with University of Iowa Health Care and Iowa City VA Medical Center reveals the difficulty consumers face when attempting to obtain prices for a common surgical procedure.
The study found that 40 percent of top-ranked and 36 percent of non-top-ranked hospitals were unable to provide a price estimate for a total hip replacement procedure. Moreover, among the hospitals that could provide an estimate, the cost quoted for the procedure ranged from $11,100 to $125,798 – a more than ten-fold difference.
While data on hospital ...
Can computers save health care? IU research shows lower costs, better outcomes
2013-02-11
New research from Indiana University has found that machine learning - the same computer science discipline that helped create voice recognition systems, self-driving cars, and credit card fraud detection systems - can drastically improve both the cost and quality of health care in the United States.
Using an artificial intelligence framework combining Markov Decision Processes and Dynamic Decision Networks, IU School of Informatics and Computing researchers Casey Bennett and Kris Hauser show how simulation modeling that understands and predicts the outcomes of treatment ...
Obesity, excess weight gain during pregnancy linked to heavier babies in African-American women
2013-02-11
(Boston) – Epidemiologists at Boston University School of Public Health (BUSPH) have found that pre-pregnancy obesity and excess weight gain during pregnancy in African-American women are associated with an increased risk of giving birth to an abnormally large baby. Macrosomia, which is defined as a newborn weighing more than 4,000 grams at birth (approximately 8.8 pounds), can cause delivery complications such as hemorrhage, infection, the need for a caesarean section, preeclampsia and perinatal mortality. The study, which appears online in the journal Obesity, was conducted ...
Anxiety about relationships may lower immunity, increase vulnerability to illness
2013-02-11
COLUMBUS, Ohio – Concerns and anxieties about one's close relationships appear to function as a chronic stressor that can compromise immunity, according to new research.
In the study, researchers asked married couples to complete questionnaires about their relationships and collected saliva and blood samples to test participants' levels of a key stress-related hormone and numbers of certain immune cells.
The research focused on attachment anxiety. Those who are on the high end of the attachment anxiety spectrum are excessively concerned about being rejected, have a ...
Noisy classroom simulation aids comprehension in hearing-impaired children
2013-02-11
Children with hearing loss struggle to hear in noisy school classrooms, even with the help of hearing aids and other devices to amplify their teacher's voice. Training the brain to filter out background noise and thus understand spoken words could help the academic performance and quality of life for children who struggle to hear, but there's been little evidence that such noise training works in youngsters.
A new report showed about a 50 percent increase in speech comprehension in background noise when children with hearing impairments followed a three-week auditory ...
Large, ancient landslides delivered preferred upstream habitats for coho salmon
2013-02-11
EUGENE, Ore. (Feb. 11, 2013) -- A study of the Umpqua River basin in the Oregon Coast Range helps explain natural processes behind the width of valleys and provides potentially useful details for river restoration efforts designed to improve habitats for coho salmon (Oncorhynchus kisutch).
Coho salmon thrive in broad, flat valleys that contain multiple auxiliary channels to the main river. These valleys formed after large landslides altered the landscape, said study co-author Joshua J. Roering, professor of geological sciences at the University of Oregon. The network ...
Visualizing biological networks in 4-D
2013-02-11
PASADENA, Calif.—Every great structure, from the Empire State Building to the Golden Gate Bridge, depends on specific mechanical properties to remain strong and reliable. Rigidity—a material's stiffness—is of particular importance for maintaining the robust functionality of everything from colossal edifices to the tiniest of nanoscale structures. In biological nanostructures, like DNA networks, it has been difficult to measure this stiffness, which is essential to their properties and functions. But scientists at the California Institute of Technology (Caltech) have recently ...
Old drug may point the way to new treatments for diabetes and obesity
2013-02-11
ANN ARBOR — Researchers at the University of Michigan's Life Sciences Institute have found that amlexanox, an off-patent drug currently prescribed for the treatment of asthma and other uses, also reverses obesity, diabetes and fatty liver in mice.
The findings from the lab of Alan Saltiel, the Mary Sue Coleman director of the Life Sciences Institute, are scheduled to be published online Feb. 10 in the journal Nature Medicine.
"One of the reasons that diets are so ineffective in producing weight loss for some people is that their bodies adjust to the reduced calories ...
New genes for short-sightedness identified
2013-02-11
An international team of scientists led by King's College London has discovered 24 new genes that cause refractive errors and myopia (short-sightedness).
Myopia is a major cause of blindness and visual impairment worldwide, and currently there is no cure. These findings, published today in the journal Nature Genetics, reveal genetic causes of the trait, which could lead to finding better treatments or ways of preventing the condition in the future.
Thirty per cent of Western populations and up to 80 per cent of Asian people suffer from myopia. During visual development ...
NIH scientists discover promising target to block Staphylococcus infection
2013-02-11
National Institutes of Health (NIH) scientists have identified a promising lead for developing a new type of drug to treat infection caused by Staphylococcus aureus, a bacterium that frequently resists traditional antibiotics. The researchers discovered a system used by S. aureus to transport toxins that are thought to contribute to severe staph infections. These toxins—called phenol-soluble modulins (PSMs)—have gained much attention in recent years, but their multitude and diversity have hindered efforts to target them for drug development.
Expanding on work that first ...
Birds evolved ultraviolet vision several times
2013-02-11
Ultraviolet vision evolved at least eight times in birds from a common violet sensitive ancestor finds a study published in BioMed Central's open access journal BMC Evolutionary Biology. All of these are due to single nucleotide changes in the DNA.
Modern daytime birds either have violet sensitive or ultraviolet sensitive vision. Being ultraviolet sensitive alters visual cues used to select a mate, avoiding predators, and in finding food. Researchers from Uppsala University and the Swedish University of Agricultural Sciences sequenced the genes responsible for producing ...
U of M researchers develop a molecular 'calcium sponge' to tackle heart failure
2013-02-11
MINNEAPOLIS/ST. PAUL (February 10, 2013) – Researchers at the University of Minnesota's Department of Integrative Biology and Physiology and the Lillehei Heart Institute have utilized molecular genetic engineering to optimize heart performance in models of diastolic heart failure by creating an optimized protein that can aid in high-speed relaxation similar to fast twitching muscles.
Within heart cells, calcium plays a major role in orchestrating normal heart pump function. However, in diastolic failure the calcium signaling process is slowed; calcium levels rise to ...
Exercise linked with reduced prostate cancer risk in Caucasians but not African Americans
2013-02-11
A new study suggests that exercise may reduce Caucasian men's risk of developing prostate cancer. And among Caucasian men who do have prostate cancer, exercise may reduce their risk of having more serious forms of the disease. Unfortunately, the benefits do not seem to apply to African- American men. The study is published early online in CANCER, a peer-reviewed journal of the American Cancer Society.
Previous research has linked exercise to a reduced risk of developing prostate cancer. Studies have also revealed that African-American men have an increased risk of developing ...
Review: Few effective, evidence-based interventions for children exposed to traumatic events
2013-02-11
RESEARCH TRIANGLE PARK, N.C. – About two of every three children will experience at least one traumatic event before they turn 18. Despite this high rate of exposure, little is known about the effectiveness of treatments aimed at preventing and relieving traumatic stress symptoms that children may experience after such events, according to researchers at RTI International, the University of North Carolina School of Medicine, the RTI-UNC Evidence-based Practice Center, and Boston Medical Center.
The article, published today in the journal Pediatrics, summarizes the results ...
Grand Millennium Dubai Prepares for ITB Berlin
2013-02-11
Participating in the ITB Berlin under the Dubai Department of Tourism & Commerce Marketing umbrella, a team from the Grand Millennium Dubai will be presenting a set of competitive leisure packages to the leading tour operators from Germany and elsewhere in Europe.
Leading the team will be Director of Sales Ghassan Farhat.He said it will be the fifth time for the hotel to be in Berlin at the world's largest travel show, and he was confident of securing new business there, as well as reinforcing existing contacts and contracts.
"Figures show that the average ...
University Researchers Confirm Link Between Hot Flashes and Insomnia
2013-02-11
A team of researchers at the Stanford University School of Medicine in California recently embarked upon a study to help determine the causes of insomnia among premenopausal and postmenopausal women. The team conducted phone interviews with 982 women and gathered information about their sleep history, frequency of hot flashes, and overall health. They found that 51% of postmenopausal women suffer with hot flashes and that 79% of premenopausal women have them. Among the women with the most intense hot flashes (based on their severity and frequency), 81% of them experienced ...
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