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Science News Archive September 2015 - Page 30


Page 30 of 35

Widespread convergence in toxin resistance by predictable molecular evolution

A study by Liverpool School of Tropical Medicine researchers reveals that evolution can be highly predictable in terms of developing toxin resistance. Convergent evolution of two amino acid changes in a specific gene leads to the development of toxin resistance in various animals, including insects, reptiles, and mammals.

SourceLiverpool School of Tropical Medicine·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Ancient genomes link early farmers to Basques

A team of researchers has discovered that early Iberian farmers are the closest ancestors to modern-day Basques, contradicting previous hypotheses. The study also reveals that farming was brought to Iberia by groups migrating to northern and central Europe, leading to admixture with local hunter-gatherer populations.

SourceUppsala University·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

The right tree for the right place

The new vegetationmap4africa version provides a smartphone application and website to help users identify tree species and their uses. It aids in agroforestry and landscape restoration by providing information on suitable tree species for specific goods and services, as well as tools for regenerating degraded land.

Did grandmas make people pair up?

A recent study suggests that grandmothering played a crucial role in the development of human pair bonds, which distinguish us from other primates. With increasing human longevity, grandmothers helped feed their weaned children, allowing their daughters to have more kids and passing on genes.

SourceUniversity of Utah·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Poison in the Arctic and the human cost of 'clean' energy

Research from Harvard University suggests that flooding for hydroelectric development can increase methylmercury levels in Arctic ecosystems by up to 200 percent. The study found that freshwater from melting ice mixing with salt water creates a feeding zone for plankton that accumulates mercury and magnifies its effects on the food chain.

SourceHarvard John A. Paulson School of Engineering and Applied Sciences·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Tree of life study unveils inner workings of a cell

A multinational team of scientists created the world's largest protein map, revealing tens of thousands of new protein interactions that account for about a quarter of all estimated protein contacts in a cell. The map is helping researchers spot individual proteins that could be at the root of complex human disorders.

SourceUniversity of Toronto·JournalNature·DateSep 7, 2015

First superconducting graphene created by UBC researchers

UBC physicists successfully induce superconductivity in single-layer graphene by coating it with lithium atoms, opening up new possibilities for graphene electronics and nanoscale quantum devices. The breakthrough has significant cross-disciplinary impacts, with potential applications in computing, medicine, and sustainable energy.

SourceUniversity of British Columbia·JournalProceedings of the National Academy of Sciences·DateSep 7, 2015

Success combating multi-resistant bacteria in stables

Researchers at the University of Bonn successfully eliminated multi-resistant bacteria from a pig stable using radical hygiene measures, including frequent hand washing and quarantine. While MRSA was not eradicated, overall health improvement led to reduced antibiotic use, highlighting potential applications for hospitals

SourceUniversity of Bonn·JournalApplied and Environmental Microbiology·DateSep 7, 2015

MicroRNAs are digested, not absorbed

A recent study has found that microRNAs, previously thought to be digested and absorbed by the body, are actually broken down in the small intestine, rendering them ineffective for modifying physiological functions.

SourceETH Zurich·JournalJournal of Biological Chemistry·DateSep 7, 2015

Volunteer black hole hunters as good as the experts

A recent study published in Monthly Notices of the Royal Astronomical Society found that trained volunteers can identify jets shooting from massive black holes and match them to their host galaxies with high accuracy. The project, Radio Galaxy Zoo, uses online tutorials to teach volunteers how to spot black holes and other objects emit...

SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·DateSep 6, 2015

Early warning gene signature for Alzheimer's

A gene signature associated with 'healthy ageing' has been identified, allowing for early prediction of age-related diseases like Alzheimer's. The discovery provides a reliable molecular profile for distinguishing people at risk and could transform medical decision-making.

SourceBMC (BioMed Central)·JournalGenome Biology·DateSep 6, 2015

Plants also suffer from stress

A team of researchers has identified a protein family that helps plants grow on salt, revealing a mechanism for improving plant growth under salt stress conditions. The study found that these proteins support the cellulose synthase machinery during cellulose synthesis, helping plants maintain biomass production under salt.

SourceUniversity of Melbourne·JournalCell·DateSep 4, 2015

Decontamination exterminates antibiotic-resistant bacteria from pig farm

A study by American Society for Microbiology found that decontamination protocols effectively eliminated methicillin-resistant Staphylococcus aureus (MRSA) and antibiotic-resistant Enterobacteriaceae bacteria from a pig farm. The protocol involved high-pressure cleaning, disinfection, and treatment with complex solutions.

SourceAmerican Society for Microbiology·JournalApplied and Environmental Microbiology·DateSep 4, 2015

Highly effective seasickness treatment on the horizon

Researchers at Imperial College London have developed a new seasickness treatment using a mild electrical current applied to the scalp. The treatment reduces responses in an area of the brain responsible for processing motion signals, helping prevent symptoms of motion sickness. Short-term use is expected to be safe and effective.

SourceImperial College London·JournalNeurology·DateSep 4, 2015

Common antidepressant may change brain

Researchers found that the antidepressant sertraline increased the volume of one brain region in depressed subjects, while decreasing two brain areas in non-depressed subjects. The study used middle-aged female monkeys to replicate human depression and tested the effects of sertraline on brain volumes.

SourceAtrium Health Wake Forest Baptist·JournalNeuropharmacology·DateSep 4, 2015

Farthest galaxy detected

A team of Caltech researchers detects a galaxy called EGS8p7, which is more than 13.2 billion years old, making it the farthest galaxy ever found. The detection challenges our understanding of the universe's evolution, particularly reionization.

SourceCalifornia Institute of Technology·JournalThe Astrophysical Journal Letters·DateSep 4, 2015

Inexpensive drug saves blood and money: Study

A study at St. Michael's Hospital found that using an inexpensive drug, tranexamic acid, can reduce the number of red blood cell transfusions during hip and knee replacement surgeries by over 40%. The use of this drug did not increase adverse events or hospital stays.

SourceSt. Michael's Hospital·JournalCanadian Journal of Anesthesia/Journal canadien d anesthésie·DateSep 4, 2015