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Science News Archive 2013 - Page 15


Page 15 of 352

Orbital samples with sight-saving potential

Two studies examine the effects of spaceflight on mouse eyes, revealing oxidative stress as a key mechanism behind eye damage. Researchers found genes involved in response to oxidative stress and potential indicators of optic nerve damage, highlighting the need for countermeasures to protect astronauts' vision.

SourceNASA/Johnson Space Center·JournalGravitational and Space Research·DateDec 11, 2013

Hydrogen-powered invasion

Researchers discovered that Salmonella Typhimurium obtains energy for its attack by stealing hydrogen from the microbiota. This 'theft-based hydrogen economy' allows the pathogen to find an energy source in any new animal host.

SourceETH Zurich·JournalCell Host & Microbe·DateDec 11, 2013

The garden microbe with a sense of touch

A study by Dr James Stratford and Dr Simon Park found that Bacillus mycoides responds to subtle changes in its environment, producing whirlpool-shaped structures in response to curved surfaces. The microbe's ability to respond to force could signal potential useful scientific applications.

SourceUniversity of Nottingham·JournalPLOS ONE·DateDec 11, 2013

The mystery of lizard breath

A study by University of Utah researchers found that monitor lizards have a mostly one-way, looping air flow in their lungs, challenging previous notions about the function of this breathing pattern. The discovery raises questions about the evolutionary origins of this unique pattern, which may be as old as 270 million years.

SourceUniversity of Utah·JournalNature·DateDec 11, 2013

Is Israel's influence on US policy waning?

A recent study by Theodore Sasson suggests that Israel's influence on US policy is diminishing due to the fragmentation of the Jewish community. The once-unified voice among American Jews is now fractured, with individual preferences driving political advocacy and philanthropic support.

Magpie parents know a baby cuckoo when they see one

Research by Manuel Soler and team found that magpie foster parents are more likely to feed cuckoo fledglings in nests with only cuckoos, compared to those with magpie nestlings. This ability allows magpies to discriminate between host and parasite chicks.

SourceSpringer·JournalBehavioral Ecology and Sociobiology·DateDec 11, 2013

Musical myth

A study by Harvard researchers found no effect of music training on the cognitive abilities of young children. Despite popular belief, studying music does not enhance intelligence or improve academic performance. However, the study did find some small differences in spatial task performance between music and visual arts groups.

SourceHarvard University·JournalPLOS ONE·DateDec 11, 2013

Staying ahead of Huntington's disease

Researchers have discovered that naturally occurring gatekeeper sequences on either side of a key protein mutation in Huntington's disease can prevent the formation of toxic structures. This breakthrough offers new hope for understanding and treating the devastating neurodegenerative disorder.

SourceWashington University in St. Louis·JournalProceedings of the National Academy of Sciences·DateDec 11, 2013

Leaner Fourier transforms

MIT researchers have developed an algorithm that can perform Fourier transforms using close to the theoretical minimum number of samples. This could significantly reduce the time it takes for medical devices like MRI machines to scan patients, or allow astronomers to take more detailed images of the universe.

HIV causes structural heart disease

Research presented at EuroEcho-Imaging 2013 found that HIV patients with a positive blood viral load have a significantly higher incidence of structural heart disease. The study suggests that HIV itself might be an independent causal agent, and having a detectable blood viral load nearly doubles the prevalence of heart disease.

Precise docking sites for cells

A new method allows researchers to design and create three-dimensional structures with precise cell docking sites, enabling the study of individual cells in a close-to-reality environment. The technique uses direct laser writing and photoactive molecules to control the adhesion points for cells.

SourceHelmholtz Association·JournalAdvanced Materials·DateDec 11, 2013

Liquid to gel to bone

Researchers have developed a hydrogel scaffold that solidifies into a gel at body temperature, providing a platform for functional and aesthetic tissue regeneration. The material is intended as an alternative to prefabricated implantable scaffolds and can be injected to the point of need.

SourceRice University·JournalBiomacromolecules·DateDec 11, 2013

Rare gene variants double risk for Alzheimer's disease

Researchers have identified two rare gene variants in the phospholipase-D 3 gene (PLD3) that double an individual's risk of developing late-onset Alzheimer's disease. The study found that these variants were present in affected family members but not in healthy elderly relatives, suggesting a significant role in disease development.

SourceWashU Medicine·JournalNature·DateDec 11, 2013

In search of a treatment for a rare bone cancer

Researchers at Johns Hopkins Medicine found that erlotinib, a drug approved to treat lung cancer, substantially shrunk chordoma tumors in mice. The study offers new hope for chordoma patients who have exhausted traditional treatments and have limited financial incentives for pharmaceutical companies to develop new drugs.

SourceJohns Hopkins Medicine·JournalPLOS ONE·DateDec 11, 2013

Eating burgers from restaurants associated with higher obesity risk in in African-American women

A recent study found that eating burgers from restaurants at least twice a week was associated with a 26% increased risk of obesity in young African American women. Higher sugar-sweetened soft drink consumption also significantly contributed to obesity risk, with a 10% increase seen in those who drank two or more per day.

SourceBoston University School of Medicine·JournalEthnicity & Disease·DateDec 11, 2013

Each food fish can cause specific allergies

Studies by Helmholtz Centre for Environmental Research and University of Leipzig reveal species-specific allergens in Nile perch and shellfish, potentially allowing diagnosis and treatment tailored to individual allergies. Researchers identify parvalbumin as a common allergen, but also discover new proteins with low allergenic potential.

SourceHelmholtz Centre for Environmental Research - UFZ·JournalJournal of Investigational Allergology and Clinical Immunology·DateDec 11, 2013