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Science News for December 10, 2012


University of Illinois to improve crop yield through photosynthesis in a new global effort

The University of Illinois has received a five-year, $25-million grant to boost the efficiency of key food crops like rice and cassava through improved photosynthesis. This project aims to increase crop productivity while reducing water and nitrogen usage, addressing the challenge of global food security.

Inspiration from a porcupine's quills

Researchers have developed a new class of adhesive materials modeled on the unique properties of porcupine quills. These quills can easily penetrate tissue but are difficult to remove, and studying their mechanism could lead to less-painful needles and adhesives that bind internal tissues securely.

SourceMassachusetts Institute of Technology·JournalProceedings of the National Academy of Sciences·DateDec 10, 2012

Brown fat transplants help mice lose weight

Researchers performed brown fat transplants in mice to treat obesity, finding significant reductions in body weight and improvements in glucose metabolism. The transplanted brown fat secreted hormones that mediated metabolic effects throughout the body.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 10, 2012

Researchers identify therapeutic targets in neurofibromatosis

Three independent studies demonstrate that hyperactivation of MAPK signaling pathways underlies NF1-associated disorders. Researchers found that inhibiting MEK and ERK can block the development of JMML, reduce the growth of peripheral nerve tumors, and ameliorate myeloproliferative disorders in NF1 mutant mice.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 10, 2012

(Antibody) orientation matters

A study found that antibodies attached to bacteria via their Fc regions in saliva, while in blood they bound primarily via their Fab regions. This difference in orientation was linked to the local antibody concentration, with low levels favoring Fc-mediated binding and high levels favoring Fab-mediated binding.

SourceRockefeller University Press·JournalJournal of Experimental Medicine·DateDec 10, 2012

Mining ancient ores for clues to early life

Scientists found that oxygen levels were extremely low on Earth 2.7 billion years ago, but also discovered microbes actively feeding on sulfate in the ocean during this period. The study provides new insight into ancient metal-ore deposits and their role in understanding early life evolution.

SourceMcGill University·JournalNature Geoscience·DateDec 10, 2012

New studies reveal critical insights to improve care of patients with sickle cell disease

Research identifies key challenges in providing adequate care to adult SCD patients, including increased reliance on emergency departments and hospitalizations. The studies suggest that targeted interventions can reduce unnecessary medical utilization and promote long-term disease management, ultimately improving health outcomes for th...

Higher levels of college-degree attainment boosts employment for all, even the least educated

Research by John Winters found that every 10% rise in four-year college degree attainment boosted women's employment rates with high school diplomas or less by 3.2%. Mid-sized college towns and cities benefited the most from higher education, while larger cities with high college-degree proportions also saw improved employment outcomes.

SourceUniversity of Cincinnati·JournalJournal of Economic Geography·DateDec 10, 2012

Tracking gene flow in marine plant evolution

Researchers used big data statistical tools to trace directionality in gene migration, finding a westward migration of genes from the Mediterranean to the Atlantic. This method can also be applied to estimate information flow in complex networks.

SourceSpringer·JournalEPJ Data Science·DateDec 10, 2012

'Public ecology' could help resolve mountaintop mining issues

Mountaintop mining has significant environmental and social impacts, but a new public ecology approach aims to balance economic needs with ecological protection. The approach involves broad participation, transparency, and compromise among stakeholders, including miners, environmental groups, and government agencies.

SourceVirginia Tech·JournalResources Policy·DateDec 10, 2012

Pre-diabetic patients respond to self-directed lifestyle interventions, Stanford researcher says

A new clinical study from Stanford University School of Medicine and Palo Alto Medical Foundation Research Institute found that pre-diabetic patients respond to self-directed lifestyle interventions, such as a take-home DVD, with similar effectiveness to coach-led programs. The study offers a practical way for primary care physicians t...

SourceStanford Medicine·JournalArchives of Internal Medicine·DateDec 10, 2012

Study suggests vision insurance associated with eye-care visits, better reported vision

A recent study published in Archives of Ophthalmology found that working-age adults with vision insurance are more likely to have regular eye exams and report better vision. The research suggests that having vision insurance may be an important factor in preventing eye impairment, particularly among individuals with pre-existing condit...

SourceJAMA Network·JournalArchives of Ophthalmology·DateDec 10, 2012

Targeted prostate biopsy has potential to improve diagnosis of prostate cancer

A new targeted prostate biopsy technique using magnetic resonance ultrasound fusion has been shown to improve diagnosis of prostate cancer and aid in selecting patients for active surveillance. The study found that the biopsies identified 90 out of 171 men with prostate cancer, highlighting its potential as a more accurate and efficien...

SourceElsevier Health Sciences·JournalThe Journal of Urology·DateDec 10, 2012

Glaucoma study could inspire e-reader apps

A new study published in Investigative Ophthalmology & Visual Science found that glaucoma patients read slower when reading silently for long periods, with a 16% decrease in reading speed. The research suggests technological solutions like e-readers could help alleviate reading difficulties, paving the way for potential app development.

SourceAssociation for Research in Vision and Ophthalmology·JournalInvestigative Ophthalmology & Visual Science·DateDec 10, 2012

Morning vs nighttime replacement affects adverse events with extended-wear contact lenses

A study published in Optometry and Vision Science found that replacing extended-wear/continuous-wear contact lenses in the morning reduces overall adverse event rates by about four percent compared to nightly replacement. Morning lens replacement also significantly lowers mechanical adverse events, such as corneal scratches.

SourceWolters Kluwer Health·JournalOptometry and Vision Science·DateDec 10, 2012

How our nerves regulate insulin secretion

Studies have shown that the autonomic nervous system plays a crucial role in regulating insulin secretion from beta cells in the pancreas. Researchers at Karolinska Institutet successfully grafted beta cells into mice eyes to study their function, revealing how the autonomic nervous system influences blood glucose levels.

SourceKarolinska Institutet·JournalProceedings of the National Academy of Sciences·DateDec 10, 2012

UCLA cancer scientists identify liposarcoma tumors that respond to chemotherapy

Researchers at UCLA's Jonsson Comprehensive Center have identified liposarcoma tumors that can be imaged by PET scanning using a tracer substance known as FAC, and found these tumors are sensitive to chemotherapy. This discovery has translational potential for liposarcoma patients and may lead to more effective treatment strategies.

SourceUniversity of California - Los Angeles·JournalCancer Discovery·DateDec 10, 2012

Addition of technology to standard weight loss plan appears beneficial for greater weight loss

A study found that adding a personal digital assistant and telephone coaching to a standard weight loss program significantly enhanced short-term weight loss outcomes. Participants in the intervention group lost an average of 3.9 kg more than those in the control group at each weigh-in, with notable improvements at three and six months.

SourceJAMA Network·JournalArchives of Internal Medicine·DateDec 10, 2012

The image of mental fatigue

Researchers used functional magnetic resonance imaging (fMRI) to monitor activity in brains of sleep-deprived volunteers. The study found decreased activity in specific brain regions, including the anterior cingulate cortex, linked to feelings of mental fatigue. This discovery could lead to the development of new measures for assessing...

SourceInderscience Publishers·JournalInternational Journal of Computer Applications in Technology·DateDec 10, 2012

Onion soaks up heavy metal

Researchers have found that onion and garlic waste can effectively remove heavy metals like lead, arsenic, and cadmium from contaminated materials. The optimal conditions for this process include a pH of 5 and contact time of half an hour at 50 degrees Celsius.

SourceInderscience Publishers·JournalInternational Journal of Environment and Pollution·DateDec 10, 2012

Slavery in Yorkshire

This new book examines Richard Oastler's fight to limit working hours and prevent child labour in Yorkshire's industrial towns during the early 19th century. The book features contributions from six historians exploring Oastler's impact on British society.

Mother's vitamin D level linked to birth weight

A recent study published in the Journal of Clinical Endocrinology & Metabolism found that a mother's vitamin D level is positively related to birth weight and head circumference. Additionally, a deficiency in vitamin D during the first trimester was negatively associated with the risk of a baby being born small for gestational age.

SourceThe Endocrine Society·JournalThe Journal of Clinical Endocrinology & Metabolism·DateDec 10, 2012

JCI early table of contents for Dec. 10, 2012

Researchers discovered that brown fat transplants significantly decreased body weight and improved insulin sensitivity in mice fed high-fat diets. The study also found that the transplanted brown fat secreted hormones that mediated metabolic effects throughout the body.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 10, 2012

From fish to man: Research reveals how fins became legs

Researchers found that the development of hands and feet occurred through the gain of new DNA elements activating specific genes. This discovery helps understand the power of gene expression in shaping bodies and may shed light on genetic diseases associated with limb formation.

SourceCell Press·JournalDevelopmental Cell·DateDec 10, 2012

Point-of-care ultrasound is more accurate than the stethoscope in diagnosing pneumonia in children

Researchers found point-of-care ultrasound to be highly specific (97%) and sensitive (92%) for diagnosing pneumonia, outperforming the traditional method of auscultation by stethoscope. Ultrasound can also detect small pneumonias that a chest x-ray may miss, making it a valuable tool in pediatric care.

SourceThe Mount Sinai Hospital / Mount Sinai School of Medicine·JournalArchives of Pediatrics and Adolescent Medicine·DateDec 10, 2012

Iron supplements reduce ADHD in low birth weight infants

A randomized controlled trial found that iron supplements reduced behavioral problems like ADHD in low birth weight infants by 9.8 percentage points compared to those without supplementation. The study concluded that early iron supplementation has long-term health benefits for marginally low birth weight infants.

SourceUmea University·JournalPEDIATRICS·DateDec 10, 2012

Into adulthood, sickle cell patients rely on ER

Research found that sickle cell patients experience a significant increase in emergency department visits and hospitalizations as they transition from childhood to adulthood. The study, which analyzed data from over 3,200 patients, showed that emergency room visits tripled between ages 15-24.

Mobile app boosts weight loss by 15 pounds

A new Northwestern University study found that a mobile app tracking calories and activity, combined with regular nutrition and exercise classes, helped participants lose an average of 15 pounds and maintain weight loss for at least a year. The technology alone was not enough to achieve significant weight loss.

SourceNorthwestern University·JournalArchives of Internal Medicine·DateDec 10, 2012

As Amazon urbanizes, rural fires burn unchecked

A recent study finds that uncontrolled blazes in the Peruvian Amazon are driven by depopulation, increased road networks, and drought, leading to devastating forest, farm, and village losses. Researchers suggest that government policies promoting oil palm plantations could help mitigate these effects.

SourceColumbia Climate School·JournalProceedings of the National Academy of Sciences·DateDec 10, 2012

Tech opens communication doors for grandparents of grandkids with ASD

A computer-based design program, SketchUp, helps develop spatial and visual acuity in youth on the autism spectrum. It also improves relationships between grandparents and their grandkids, creating a more supportive environment. The technology provides common ground for grandparents to engage with others, sharing experiences and joys.

SourceUniversity of Utah·JournalThe International Journal of Aging and Human Development·DateDec 10, 2012

To make old skin cells act young again, boost their surroundings, U-M scientists show

Researchers at the University of Michigan have made skin cells in senior citizens act like younger cells again by adding more filler to the surrounding extracellular matrix. The study shows that this approach can trigger a signal for cells to wake up and respond positively to alterations in their environment.

SourceMichigan Medicine - University of Michigan·JournalJournal of Investigative Dermatology·DateDec 10, 2012