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Science News for September 14, 2015


Tall and slim: They go together, genetic study shows

A genetic study by University of Queensland researchers found a strong correlation between genes that result in greater height and those that reduce body mass index. The study, published in Nature Genetics, suggests that genetic variation may play a role in creating national differences in disorders such as dementia and heart disease.

SourceUniversity of Queensland·JournalNature Genetics·DateSep 14, 2015

Combo of 3 antibiotics can kill deadly staph infections

Researchers have developed a combination of three antibiotics that can effectively treat methicillin-resistant Staphylococcus aureus (MRSA) infections in test tubes and laboratory mice. The synergistic action of the drugs prevents MRSA from developing resistance, offering potential treatment against this deadly pathogen.

SourceWashU Medicine·JournalNature Chemical Biology·DateSep 14, 2015

You're not irrational, you're just quantum probabilistic

Researchers at Ohio State University propose a new theoretical approach to psychology based on quantum physics, enabling humans to make decisions in uncertain situations. This approach resolves contradictions among previous studies and provides insight into human behavior, including the effect of survey question order.

SourceOhio State University·JournalCurrent Directions in Psychological Science·DateSep 14, 2015

Rating hospital readmissions

A study published in JAMA Internal Medicine found that Medicare's readmission penalties disproportionately affect hospitals serving disadvantaged communities. By adjusting for more comprehensive patient characteristics, the gap in readmission rates between best- and worst-performing hospitals is nearly halved. The researchers propose a...

SourceHarvard Medical School·JournalJAMA Internal Medicine·DateSep 14, 2015

Modulation of brain cholesterol: A new line of research in Alzheimer's disease treatment?

A new study reveals a direct relationship between Alzheimer's disease and brain cholesterol levels. Increasing the enzyme CYP46A1 may help eliminate excess cholesterol from the brain, correcting amyloid plaques and degenerated tau protein. This discovery opens up a new line of research for Alzheimer's treatment.

Building the electron superhighway

Researchers at the University of Vermont have developed a new method to create an 'electron superhighway' in organic materials, allowing electrons to flow faster and farther. This breakthrough could lead to improved solar cells and flexible electronics with enhanced efficiency.

SourceUniversity of Vermont·JournalNature Communications·DateSep 14, 2015

A more acidic ocean will bend the mermaid's wineglass

Scientists studied how a more acidic ocean affects the protective shell of the mermaid's wineglass algae. They found that in high carbon dioxide conditions, skeletons contained 32% less calcium carbonate and were 40% less stiff and droopier. This could make them more susceptible to damage from ocean currents and grazing by marine animals.

SourceUniversity of Washington·JournalBiology Letters·DateSep 14, 2015

Upslope migration of tropical plants due to climate change

A new study by Aarhus University researchers found that plant communities on the Chimborazo volcano in Ecuador have shifted upwards by more than 500 meters over the last two centuries. This dramatic shift is attributed to climate change and human-induced land cultivation, which has reduced precipitation and glacier coverage.

SourceAarhus University·JournalProceedings of the National Academy of Sciences·DateSep 14, 2015

Sierra Nevada snowpack lowest in five centuries

A new report led by University of Arizona researchers reveals the Sierra Nevada snowpack was at its lowest level in 500 years in 2015, exacerbating California's ongoing drought. The study uses tree-ring data to compare snowpack levels with temperatures, finding a strong correlation between warmer winters and lower snowpack.

SourceUniversity of Arizona·JournalNature Climate Change·DateSep 14, 2015

Birds reveal the evolutionary importance of love

A new study by Malika Ihle and colleagues found that zebra finches choose mates based on stimulation, leading to increased reproductive success. The research suggests that this mate-choice process is essential for the survival of the species, as it maximizes gene perpetuation through successful offspring.

SourcePLOS·JournalPLOS Biology·DateSep 14, 2015

Social factors may impact young leukemia patients' survival

A new study reveals that social factors such as insurance status, marital status, and county-level income significantly affect the chances of survival in young patients with acute myelogenous leukemia (AML). The findings highlight the need to address these non-biological patient characteristics to improve health outcomes.

SourceWiley·JournalCancer·DateSep 14, 2015

Real X-ray vision: See-through brains ready for study

Researchers at RIKEN Brain Science Institute developed a new optical clearing technique called Sca l eS, enabling the creation of transparent brain samples for detailed analysis. The technique has provided new insights into Alzheimer's disease pathology and revealed associations between amyloid beta plaques and microglial cells.

SourceRIKEN·JournalNature Neuroscience·DateSep 14, 2015

Viruses flourish in guts of healthy babies

A new study found that viruses flourish in the guts of healthy infants, with diverse viral strains and a dynamic ecosystem of interacting organisms. The researchers discovered viral strains that exclusively kill bacteria, which declines as the babies grow older.

SourceWashU Medicine·JournalNature Medicine·DateSep 14, 2015

Researchers develop key component for terahertz wireless

Researchers from Brown University have developed a system for multiplexing terahertz waves, which enables separate streams of data to travel through a single medium. This technology has the potential to support terahertz wireless systems that can deliver data at much higher speeds than current cellular or Wi-Fi networks.

SourceBrown University·JournalNature Photonics·DateSep 14, 2015

Low vitamin D associated with faster decline in cognitive function

A study found that vitamin D insufficiency was associated with a faster decline in cognitive functions among older adults. The research, published in JAMA Neurology, revealed that African American and Hispanic individuals were more likely to have vitamin D insufficiency or deficiency. Participants with inadequate vitamin D levels exper...

SourceJAMA Network·JournalJAMA Neurology·DateSep 14, 2015