Add BrightSurf on Google Email

Science News for December 19, 2013


Saving dollars while helping babies

A new Duke study found that nurse home visiting programs can reduce healthcare costs by $3 for every $1 spent, while also improving health and parenting outcomes. Participating families had lower rates of maternal anxiety and safer home environments than non-participating families.

SourceDuke University·JournalAmerican Journal of Public Health·DateDec 19, 2013

DNA clamp to grab cancer before it develops

Researchers have developed a DNA clamp that can detect genetic mutations in cancer with greater efficiency than current methods, paving the way for rapid screening and new nanotechnology tools. The technology uses triple helices to improve specificity and has potential applications in diagnostic tests and DNA-based nanostructures.

SourceUniversity of Montreal·JournalACS Nano·DateDec 19, 2013

Healthier Happy Meals

Researchers analyzed transaction data from 30 McDonald's restaurants to find that reducing the size of French fries decreased the calorie count in children's meals by 104 calories. Children mostly stuck with their original entrée choice, but opted for lower-calorie beverages like milk instead of soda.

SourceCornell Food & Brand Lab·JournalObesity·DateDec 19, 2013

New evidence that computers change the way we learn

Researchers found that computer users make broader generalizations when it comes to movement learning. Computer-naive individuals converted their generalization patterns after just two weeks of intensive mouse use, suggesting that computer use fundamentally affects neural representation of movements.

SourceCell Press·JournalCurrent Biology·DateDec 19, 2013

Data are lost to science at 'astonishing rate'

A recent study found that most scientific data is inaccessible after just 20 years, with over 80% of publicly funded research data lost forever. Researchers are calling for journals to require authors to share their data on public archives before publication.

SourceCell Press·JournalCurrent Biology·DateDec 19, 2013

Telecoupling science shows China's forest sustainability packs global impact

A Michigan State University scholar proposes the telecoupling framework to understand how China's domestic decisions influence other countries and vice versa. The research shows that China's efforts to sustain forests can have substantial global impacts, including reappearing deforestation in countries that sell lumber and food to China.

SourceMichigan State University·JournalAsia & the Pacific Policy Studies·DateDec 19, 2013

Essential factor for Lyme disease transmission identified

Researchers found that HrpA is essential for Lyme disease transmission and tick survival, enabling the bacterium to regulate its RNA and survive in mammalian hosts. The discovery provides significant insights into the complex life cycle of Borrelia burgdorferi and potential targets for future treatments.

SourcePLOS·JournalPLOS Pathogens·DateDec 19, 2013

MRI method for measuring MS progression validated

A new MRI approach called quantitative susceptibility mapping (QSM) has been validated for measuring Multiple Sclerosis (MS) progression. QSM provides a quantitative way to measure myelin content and iron deposition in the brain, which are important factors in MS physiology. The study demonstrated that using the correct model can separ...

SourceUniversity of Western Ontario·JournalProceedings of the National Academy of Sciences·DateDec 19, 2013

Beyond Mendel

The Student DNA Barcoding Project is a flexible curriculum that uses student-generated research to teach about biodiversity, ecology and molecular biology. The project has been successfully used in New York City and Belize, with students exploring topics such as beetles, beehives, and conservation.

Helping good genes win in brain cancer cells

A study published in Molecular Neurobiology found that sodium butyrate reduces survival of cultured medulloblastoma cells and enhances expression of markers for a mature neuronal phenotype. This suggests the compound may promote cell death and favor maturation towards less malignant-prone phenotypes.

SourceWrite Science Right·JournalMolecular Neurobiology·DateDec 19, 2013

Ancient cranial surgery

Researchers discovered 45 trepanation procedures on human remains in Peru's Andahuaylas caves dating back to AD 1000-1250. The ancient practice was used to treat various ailments and conditions, with varying techniques employed by practitioners.

SourceUniversity of California - Santa Barbara·JournalAmerican Journal of Physical Anthropology·DateDec 19, 2013

An increase of just 2,000 steps a day cuts cardiovascular disease risk by 8 percent in those with a high risk of type 2 diabetes

A daily step increase of just 2000 steps can cut the risk of cardiovascular disease by 8% in those with a high risk of type 2 diabetes. The study, which analyzed data from 40 countries, also found that increasing physical activity levels through walking can substantially reduce the risk of heart attack and stroke.

SourceThe Lancet_DELETED·JournalThe Lancet·DateDec 19, 2013

Brain repair after injury and Alzheimer's disease

Scientists use reactive glial cells to regenerate healthy neurons in a breakthrough technology for treating brain injuries and Alzheimer's disease. In mouse models and human cell cultures, the method successfully converts glial cells into functional neurons.

SourcePenn State·JournalCell Stem Cell·DateDec 19, 2013

Evolution of plumage patterns in male and female birds

Research by Thanh-Lan Gluckman reveals that plumage patterning is labile in both males and females, with changes driven by environmental factors and signalling functions. The study challenges traditional views on sexual dimorphism, suggesting multiple types of dimorphism and adaptations to social and environmental conditions.

SourceUniversity of Cambridge·JournalBiological Journal of the Linnean Society·DateDec 19, 2013

Living at home with dementia

A new study by Johns Hopkins Medicine finds that most people with dementia living at home have multiple unmet health and welfare needs. Routine assessments and interventions in safety, medical care, and supportive services can help keep patients at home longer.

SourceJohns Hopkins Medicine·JournalJournal of the American Geriatrics Society·DateDec 19, 2013

Big data project reveals where carbon-stocking projects in Africa provide the greatest benefits

A new study by Aarhus University reveals the optimal locations for carbon-stocking projects in Africa, prioritizing regions with high carbon potential, biodiversity conservation, and feasibility. The research identifies areas such as the Upper Guinean rainforests of West Africa and the Lower Guinean rainforests along the coast of Niger...

SourceAarhus University·JournalNature Communications·DateDec 19, 2013

Concussion tests' marketing outpaces scientific evidence, new review says

A new review published in the journal Neuropsychology Review finds that computerized neurocognitive testing for concussions lacks consistent evidence on reliability and validity. The study suggests caution when using these tests due to their marketing prevalence over scientific proof, emphasizing the need for a multi-dimensional approa...

SourceUniversity of Texas at Arlington·JournalNeuropsychology Review·DateDec 19, 2013

A new -- and reversible -- cause of aging

Researchers at Harvard Medical School have discovered a reversible cause of aging in mammals. Administering a naturally produced compound restored communication between cells' nucleus and mitochondria, comparable to younger animals. This finding has significant implications for understanding the aging process and potential reversal.

SourceHarvard Medical School·JournalCell·DateDec 19, 2013

Lactation consultant visits spur breastfeeding among women who usually resist it

Research at Albert Einstein College of Medicine found that lactation consultants improved breastfeeding rates among women who resisted it. The studies showed that support from a lactation consultant significantly increased the chances of exclusive breastfeeding for three months, crucial for mother and child health benefits.

SourceAlbert Einstein College of Medicine·JournalAmerican Journal of Public Health·DateDec 19, 2013

CCNY chemists use sugar-based gelators to solidify vegetable oils

Researchers at The City College of New York have successfully transformed vegetable oils into a semisolid form using low-calorie sugars as structuring agents. Mannitol dioctanoate and sorbitol dioctanoate gelators demonstrated excellent gelation tendencies for various oils, producing stable gels that can be used in food processing.

SourceCity College of New York·JournalJournal of Agricultural and Food Chemistry·DateDec 19, 2013

Monthly appointments with pharmacists improve medication adherence

Patients with chronic medications show improved adherence when they meet monthly with pharmacists to coordinate treatment schedules and dispense prescriptions on a single day. This appointment-based model can have a major impact on patient health, as it simplifies medication regimens and addresses individualized needs.

SourceVirginia Commonwealth University·JournalJournal of the American Pharmacists Association·DateDec 19, 2013

Most women on dialysis -- even those who lack interest in sex -- are satisfied with their sex lives

Most women on dialysis experience sexual inactivity, but true sexual dysfunction is less common; many are satisfied with their sex life, and few wish to learn about treatment options. The study highlights the need for individualized discussions between physicians and patients to identify those who truly suffer from sexual dysfunction.

SourceAmerican Society of Nephrology·JournalClinical Journal of the American Society of Nephrology·DateDec 19, 2013

Corn pest decline may save farmers money

Significant declines in European corn borer populations suggest that expensive, insecticidal toxin-resistant corn hybrids are not needed. Non-Bt hybrid seeds can be a more cost-effective option for growers to reduce potential losses.

SourcePenn State·JournalPest Management Science·DateDec 19, 2013

Saving fertility not priority at most cancer centers

A new Northwestern Medicine study reveals that leading National Cancer Institute-designated comprehensive cancer centers do not consistently identify and inform patients about their fertility risks or refer them to specialists. Fertility navigators are crucial in bridging the gap between oncology and fertility, but only a third of thes...

SourceNorthwestern University·JournalJournal of the National Comprehensive Cancer Network·DateDec 19, 2013

Reinterpreting origins, examining skeletal preservation, and understanding volcanics

Researchers investigate the geological features of Faial Island, Portugal, examining relationships between tectonics and magmatism. Additionally, studies on apatite fossil preservation in Cambrian rocks shed light on the source of phosphorus for exceptional fossilization. Marine terraces along California's Santa Barbara coast also prov...

SourceGeological Society of America·JournalACM SIGSAM Bulletin·DateDec 19, 2013