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Science News for June 10, 2015


New obesity treatment prevents bone loss during weight loss

A new study from the University of Copenhagen found that using the intestinal hormone GLP-1 in obesity treatment prevents bone loss and increases blood levels of bone formation markers. This has significant implications for future obesity treatment, particularly for menopausal women at risk of osteoporosis.

SourceUniversity of Copenhagen - The Faculty of Health and Medical Sciences·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 10, 2015

Finding hope in the dark

Researchers have identified a gene, PRDM8, linked to early loss of night vision in animal models. Gene therapy for Leber's congenital amaurosis shows promising results, but temporary improvements are seen.

SourceUniversity of Bristol·JournalProceedings of the National Academy of Sciences·DateJun 10, 2015

Youth on the autism spectrum overly sensitive to sensory stimuli have brains that react differently

A UCLA study finds that children with autism spectrum disorder who are overly sensitive to sensory stimuli have brains that react differently, leading to a condition called sensory over-responsivity. The research may lead to interventions that can help improve the lives of these children and their families.

Obesity linked to adrenal disorder in teens may increase risk for cardiovascular disease

Researchers found that teenagers and young adults with congenital adrenal hyperplasia have significantly more abdominal fat tissue, which increases their risk for harmful conditions such as cardiovascular disease. The study suggests a need for targeted prevention and therapeutics to avoid these adverse effects.

SourceChildren's Hospital Los Angeles·JournalThe Journal of Clinical Endocrinology & Metabolism·DateJun 10, 2015

Travertine reveals ancient Roman aqueduct supply

A study of travertine deposits in the Anio Novus aqueduct revealed an actual estimate of its flow rate, significantly lower than previous estimates. The aqueduct's average water level indicates it was almost always full of water, supplying Rome with a reliable water supply that enabled urbanization during the first century AD.

Statewide quality improvement program helps lower rates of trauma complications

A statewide quality improvement program helped reduce serious blood clot complications by more than half in Michigan trauma centers. The program, which provides data-driven feedback and best practices, led to a significant drop in venous thromboembolism events after switching from one anti-clotting agent to another.

SourceAmerican College of Surgeons·JournalJournal of the American College of Surgeons·DateJun 10, 2015

Early intensive intervention improves outcomes for children with autism spectrum disorder

A recent study published in Journal of the American Academy of Child and Adolescent Psychiatry demonstrates that early intensive behavioral intervention improves outcomes for young children with ASD, including intellectual ability and adaptive behavior. The study found no group differences in core autism symptoms immediately post-treat...

SourceElsevier·JournalJournal of the American Academy of Child & Adolescent Psychiatry·DateJun 10, 2015

When trees aren't 'green'

A recent study in Japan reveals that overcrowded, older tree plantations are a significant source of non-point nitrogen pollution. The findings highlight the need for better forest management practices to restore their ability to clean water rather than pollute it.

SourceAmerican Society of Agronomy·JournalJournal of Environmental Quality·DateJun 10, 2015

Pedophiles more likely to have physical irregularities

Research suggests pedophiles are more likely to have minor physical anomalies in the face and head, developing during the prenatal period. The study found a higher prevalence of these deviations among left-handed men, who may be more susceptible to disruptive events during fetal development.

SourceSpringer·JournalArchives of Sexual Behavior·DateJun 10, 2015

University of Windsor sexual assault study reaches NEJM

A new University of Windsor-led study published in the New England Journal of Medicine found that a sexual assault resistance education program significantly reduced the likelihood of completed rape among first-year university women. The EAAA program, which consists of four three-hour sessions, helped women assess risk, overcome emotio...

SourceUniversity of Windsor·JournalNew England Journal of Medicine·DateJun 10, 2015

Weekend screen time linked to poorer bone health in teen boys

Research published in BMJ Open found that weekend screen time is associated with lower bone mineral density in teen boys, while teenage girls with different body fat distribution may be protected from the negative effects of screen time on their bones. The study suggests that persisting associations between sedentary activities and bon...

SourceBMJ Group·JournalBMJ Open·DateJun 10, 2015

MIT team creates ultracold molecules

Researchers successfully cooled sodium potassium molecules to a temperature just above absolute zero, creating exotic states of matter with strong dipole moments. The ultracold molecules exhibited long lifetimes and resisted reactive collisions, paving the way for new discoveries in quantum mechanics.

SourceMassachusetts Institute of Technology·JournalPhysical Review Letters·DateJun 10, 2015

Coral colonies more genetically diverse than assumed

Researchers at Ruhr-University Bochum discovered that coral colonies have higher genetic diversity than assumed, with 24-47% of polyps being genetically different. This increased diversity may help corals adapt to environmental changes, but is it sufficient to compensate for the devastating effects of climate change?

SourceRuhr-University Bochum·JournalMolecular Ecology·DateJun 10, 2015

Return trips feel shorter in hindsight

A study published in PLOS ONE found that participants estimated the length of a round-trip walk as shorter than the outward trip, even when the times were equal. This phenomenon, known as the return trip effect, may be related to our perception of time and awareness of the destination.

SourcePLOS·JournalPLOS ONE·DateJun 10, 2015

Study discovers new method of classifying low-grade brain tumors

A new classification system has been developed to improve the diagnosis and treatment of low- and intermediate-grade gliomas (LGGs), reducing the reliance on subjective tumor appearance. The system uses molecular and genetic analysis to identify three distinct groups of LGGs with varying prognoses, offering a more objective approach.

SourceUniversity Hospitals Cleveland Medical Center·JournalNew England Journal of Medicine·DateJun 10, 2015

New study explores whether newborns delivered by c-section face higher risk of chronic health problems later in life

A new study published in the British Medical Journal examines the evidence on whether newborns delivered by C-section are more likely to develop obesity, asthma, and diabetes later in life. The authors find that cesarean delivery may lead to worse long-term child health, warranting concerns for clinical guidelines.

Common antibiotic may be the answer to many multidrug-resistant bacterial infections

Researchers found that growing bacteria in mammalian tissue culture media instead of standard bacteriologic media makes them more sensitive to azithromycin. The drug is also effective when paired with colistin or antimicrobial peptides produced by the human body during infection, reducing bacterial counts by up to 99% in mouse models.

SourceUniversity of California - San Diego·JournalEBioMedicine·DateJun 10, 2015

A stiff upper lip makes sense to baby

Researchers at Concordia University found that 18-month-old toddlers can distinguish between appropriate and inappropriate emotional responses, demonstrating an understanding of stoicism and the importance of emotional expressions in building trust. Toddlers showed greater empathy towards individuals who expressed sadness after a negat...

SourceConcordia University·JournalInfant Behavior and Development·DateJun 10, 2015

Intensive initial therapy with triple DMARDs improves functional ability in early RA

The tREACH trial found that combination DMARDs (methotrexate, sulfasalazine, and hydroxychloroquine) improve measures of disease activity and functional ability in patients with early rheumatoid arthritis. This suggests an earlier decrease in disease severity and improvements in functional ability compared to monotherapy.

SourceEuropean Alliance of Associations for Rheumatology (EULAR)·JournalAnnals of the Rheumatic Diseases·DateJun 10, 2015

Plants may run out of time to grow under ongoing climate change

A new study finds that climate change will lead to overall declines in plant growing days by 2100 due to warming, drought, and limited solar radiation. The study reveals that tropical regions will face significant reductions in suitable climates for plant growth, with some areas facing up to a 200-day reduction per year.

SourcePLOS·JournalPLOS Biology·DateJun 10, 2015