Curated News: PNAS

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14-Jul-2016 7:05 AM EDT
In Gauging and Correcting Errors, Brain Plays Confidence Game, New Research Shows
New York University

The confidence in our decision-making serves to both gauge errors and to revise our approach, New York University neuroscientists have found. Their study offers insights into the hierarchical nature of how we make choices over extended periods of time, ranging from medical diagnoses and treatment to the strategies we use to invest our money.

   
Released: 14-Jul-2016 10:05 PM EDT
NUS Scientists Discover That Modifications to Protein RUNX3 May Promote Cancer Growth
National University of Singapore (NUS)

Scientists from the Cancer Science Institute of Singapore at the National University of Singapore have discovered that a modification called phosphorylation made to a protein called RUNX3 may promote cancer progression by allowing cell division. The phosphorylation, or the addition of a phosphate group to a molecule, is carried out by an enzyme called Aurora Kinase, which has been observed to be present in unusually high levels in some cancers.

   
8-Jul-2016 7:05 PM EDT
Measuring damage to brain networks may aid stroke treatment, predict recovery
Washington University in St. Louis

Understanding the networks of connections between brain regions and how they are changed by a stroke is crucial to understanding how stroke patients heal, according to new research from Washington University School of Medicine in St. Louis.

8-Jul-2016 7:05 PM EDT
Measuring damage to brain networks may aid stroke treatment, predict recovery
Washington University in St. Louis

Understanding the networks of connections between brain regions and how they are changed by a stroke is crucial to understanding how stroke patients heal, according to new research from Washington University School of Medicine in St. Louis.

Released: 7-Jul-2016 9:55 AM EDT
Closing the Loop: Ionic Liquids From Biomass Waste Could Pretreat Plants Destined for Biofuels
Department of Energy, Office of Science

Ionic liquids (ILs) prepare plant matter to be broken into its component sugars, which can be used in creating biofuels. However, the availability and high cost of petroleum-derived ILs pose challenges. Synthesizing new ILs directly from biomass “wastes” could help.

Released: 7-Jul-2016 9:45 AM EDT
Elevated Carbon Dioxide Suppresses Dominant Plant Species in a Mixed-Grass Prairie
Department of Energy, Office of Science

Led by researchers from Wyoming, a team found that elevated carbon dioxide levels suppress the dominant plant species in a northern U.S. Great Plains mixed-grass prairie, creating a less diverse community.

Released: 7-Jul-2016 9:35 AM EDT
Characterization of Poplar Budbreak Gene Enhances Understanding of Spring Regrowth
Department of Energy, Office of Science

The gene identified and characterized in this study will enhance the understanding of how woody perennial plants begin their growth cycle, enabling development of new approaches to population management.

Released: 30-Jun-2016 9:55 AM EDT
Heat-Loving Microbe Engineered to Produce Bioalcohols for Fuel
Department of Energy, Office of Science

The U.S. bioethanol industry depends largely on turning a certain sugar into the simple two-carbon alcohol, the biofuel ethanol. Researchers engineered a heat-loving microbe to produce not only ethanol, but also a range of other alcohols.

Released: 30-Jun-2016 9:50 AM EDT
Work Together or Go It Alone? Microbes Are Split on the Answer
Department of Energy, Office of Science

Researchers found a remarkable parallel evolution between two microbial species. The results suggest a trade-off between working together to thrive and maintaining the flexibility to survive alone.

Released: 30-Jun-2016 9:45 AM EDT
Iron Supplements Help Microbes Working Together to Thrive When Oxygen Is Scarce
Department of Energy, Office of Science

New evidence shows that higher levels of iron oxides in ocean and coastal sediments speed the conversion of the more potent greenhouse gas methane into carbon dioxide even in the absence of oxygen.

Released: 29-Jun-2016 8:20 AM EDT
Nano-Stiltskin: Turning Gold Into … See-Through Rubber
Department of Energy, Office of Science

Flexible solar panels would benefit from stretchable, damage-resistant, transparent metal electrodes. Researchers found that topology and the adhesion between a metal nanomesh and the underlying substrate played key roles in creating such materials.

Released: 21-Jun-2016 2:05 PM EDT
Researchers Find Highland East Asian Origin for Prehistoric Himalayan Populations
University of Oklahoma

In a collaborative study by the University of Oklahoma, University of Chicago, University of California, Merced, and Uppsala University, researchers conduct the first ancient DNA investigation of the Himalayan arc, generating genomic data for eight individuals ranging in time from the earliest known human settlements to the establishment of the Tibetan Empire. The findings demonstrate that the genetic make-up of high-altitude Himalayan populations has remained remarkably stable despite cultural transitions and exposure to outside populations through trade.

20-Jun-2016 3:00 PM EDT
Silencing of Gene Affects People’s Social Lives, Study Shows
University of Georgia

A team of researchers led by psychologists at the University of Georgia have found that the silencing of a specific gene may affect human social behavior, including a person’s ability to form healthy relationships or to recognize the emotional states of others.

20-Jun-2016 3:00 PM EDT
Controlling Light: New Protection for Photosynthetic Organisms
Washington University in St. Louis

Scientists at Washington University in St. Louis have discovered a previously unknown strategy photosynthetic organisms use to protect themselves from the dangers of excessive light, providing further insight into photosynthesis and opening up new avenues for engineering this process, which underlies the global food chain.

Released: 17-Jun-2016 2:05 PM EDT
A New Trick for Controlling Emission Direction in Microlasers
Washington University in St. Louis

Researchers at Washington University in St. Louis have found a way to give photons, or light packets, their marching orders.

Released: 17-Jun-2016 2:05 PM EDT
Tiny Droplets… Lead to Exotic Properties
Department of Energy, Office of Science

Molecules in liquid crystals form exotic phases in which arrays of defects are organized into striking patterns. Confining these defect structures within droplets offers fine control that points to strategies—not possible in bulk phases—for assembly of responsive, adaptable materials.

Released: 15-Jun-2016 4:05 PM EDT
Underlying Connection Found Between Diverse Materials with Extreme Magnetoresistance
Princeton University

Unifying phase diagrams could be used to find materials with useful applications in magnetic memory.

Released: 14-Jun-2016 4:05 PM EDT
Eukaryote Process of Programmed Fork Arrest Determined
Medical University of South Carolina

Mechanism of genome replication arrest provides pioneering insight about cell life span and aging

Released: 14-Jun-2016 4:05 AM EDT
Queen’s Researchers Discover Heart Drug Could Reduce Diabetes Related Blindness
Queen's University Belfast

Researchers at Queen’s University Belfast and University College London have discovered that a drug, originally developed to treat cardiovascular disease, has the potential to reduce diabetes related blindness.

10-Jun-2016 1:40 PM EDT
Where Were You Born? Origin Matters for Species Interactions
Louisiana State University

An oft-quoted proverb says it takes a village to raise a child, and new research from ecologists at LSU and Rice University suggests that a similar concept may be at work in natural ecosystems. The research, which appears in this week’s Early Edition of the Proceedings of the National Academy of Sciences, finds that the early life experiences of individual animals can have wide-reaching impacts on entire species.

Released: 8-Jun-2016 3:05 PM EDT
Ice Age Bison Fossils Shed Light on Early Human Migrations in North America
University of California, Santa Cruz

Study dates the first movements of bison through an ice-free corridor that opened between the ice sheets after the last glacial maximum

25-May-2016 2:05 PM EDT
Increased Marrying, and Mating, by Education Level Not Affecting Genetic Make-Up, New Study Finds
New York University

While the latter half of the 20th century showed a widening gap between the more and less educated with respect to marriage and fertility, this trend has not significantly altered the genetic makeup of subsequent generations, a team of researchers has found.

   
Released: 24-May-2016 2:05 PM EDT
UW Experts Develop First Method for Including Migration Uncertainty in Population Projections
University of Washington

University of Washington statisticians have developed what is believed to be the first method for incorporating the uncertainties of migration into population projections.

Released: 13-May-2016 12:05 PM EDT
Genetic History of the 'Ship of the Desert' Revealed
University of Nottingham

A unique and pioneering study of the ancient and modern DNA of the 'ship of the desert' -- the single humped camel or dromedary -- has shed new light on how its use by human societies has shaped its genetic diversity.

Released: 13-May-2016 11:05 AM EDT
Turtles Immune to Old Age? Maybe Not, According to New Iowa State University Research
Iowa State University

Nearly 30 years of data collected on painted turtles in the Mississippi River near Clinton, Iowa, show that females suffer a steep dip in fertility before the end of their lives, a finding that flies in the face of what scientists have believed about turtles and aging.

Released: 10-May-2016 9:05 AM EDT
Out of Mind, Out of Sight
Georgia Institute of Technology

Ever search desperately for something, then realize you're looking straight at it the whole time? Research indicates that vision is controlled by the part of the brain associated with thinking. And in sight, too, it can be absent minded.

5-May-2016 1:05 PM EDT
Scripps Florida Scientists Pioneer a Breakthrough Approach to Breast Cancer Treatment
Scripps Research Institute

Scientists from the Florida campus of The Scripps Research Institute have for the first time designed a drug candidate that decreases the growth of tumor cells in animal models in one of the hardest to treat cancers—triple negative breast cancer.

Released: 9-May-2016 12:05 PM EDT
First Single-Enzyme Method to Produce Quantum Dots Revealed
Lehigh University

Biological manufacturing process, pioneered by three Lehigh University engineers, produces equivalent quantum dots to those made chemically--but in a much greener, cheaper way.

Released: 6-May-2016 7:05 PM EDT
How Ameriflux Helped Determine the Impact of the 2012 U.S. Drought on the Carbon Cycle
Lawrence Berkeley National Laboratory

In 2012, the United States experienced the warmest spring on record followed by the most severe drought since the Dust Bowl. A team of scientists used a network of Ameriflux sites to map the carbon flux across the United States during the drought.

Released: 5-May-2016 2:05 PM EDT
T Cells Use 'Handshakes' to Sort Friends From Foes
Emory University Woodruff Health Sciences Center

T cells use a kind of mechanical handshake, or tug test, to determine whether a cell they encounter is a foreign invader.

Released: 4-May-2016 2:05 AM EDT
Transplanted Nerve Cells Survive a Quarter of a Century in a Parkinson’s Disease Patient
Lund University

In the late 1980s and over the 1990s, researchers at Lund University in Sweden pioneered the transplantation of new nerve cells into the brains of patients with Parkinson’s disease. The outcomes proved for the first time that transplanted nerve cells can survive and function in the diseased human brain. Some patients showed marked improvement after the transplantation while others showed moderate or no relief of symptoms. A small number of patients suffered unwanted side-effects in the form of involuntary movements.

Released: 3-May-2016 4:05 PM EDT
Beneficial Biofilm Works as a 'Probiotic' to Control Biofouling
Penn State College of Engineering

 A team of chemical engineers at Penn State has developed a beneficial biofilm with the ability to prevent the biofouling of reverse osmosis (RO) membranes. The development may lead to more efficient membrane water filtration and purification processes around the globe.May 03, 2016UNIVERSITY PARK, Pa. -- A team of chemical engineers at Penn State has developed a beneficial biofilm with the ability to prevent the biofouling of reverse osmosis (RO) membranes.

Released: 3-May-2016 2:05 PM EDT
Bacteria Use Traffic-Cop-Like Mechanism to Infect Gut
Washington State University

WSU scientists discover mechanism critical to pathogens' success.

Released: 3-May-2016 1:05 PM EDT
Algae Use Their 'Tails' to Gallop and Trot Like Quadrupeds
University of Cambridge

Long before there were fish swimming in the oceans, tiny microorganisms were using long slender appendages called cilia and flagella to navigate their watery habitats. Now, new research reveals that species of single-celled algae coordinate their flagella to achieve a remarkable diversity of swimming gaits.

Released: 2-May-2016 10:05 PM EDT
Indiana University Researchers Find Earth May Be Home to 1 Trillion Species
Indiana University

Earth could contain nearly 1 trillion species, with only one-thousandth of 1 percent now identified, according to a study from biologists at Indiana University. The estimate, based on the intersection of large datasets and universal scaling laws, appears today in the Proceedings of the National Academy of Sciences.

Released: 29-Apr-2016 1:05 PM EDT
Birds of Prey Constrained in the Beak Evolution Race
University of Bristol

How birds' beaks evolved characteristic shapes to eat different food is a classic example of evolution by natural selection.

Released: 26-Apr-2016 4:05 PM EDT
Who Gets Hooked on Drugs & Who Stays Clean? Study in Rats Finds Genetic Markers That Influence Addiction
Michigan Medicine - University of Michigan

Why does one person who tries cocaine get addicted, and another does not? Why do some people who kick a drug habit stay clean, but others relapse? The answers to these questions may have a lot to do with specific genetic factors that vary from individual to individual, a new study in rats suggests.

Released: 26-Apr-2016 1:05 PM EDT
The Female Pelvis Adjusts for Childbearing Years
University of Zurich

According to new studies, wide hips do not reduce locomotor efficiency.

   
Released: 26-Apr-2016 10:05 AM EDT
It Takes More Than Peer Pressure to Make Large Microgels Fit In
Georgia Institute of Technology

Researchers believe they've solved the mystery of how oversized microgels shrink to fit colloidal crystals, and what they've learned could also have implications for biological systems made up of soft organic particles not unlike the polymer microgels.

Released: 25-Apr-2016 4:05 PM EDT
Nurturing During Preschool Years Boosts Child’s Brain Growth
Washington University in St. Louis

Children whose mothers were nurturing during the preschool years, as opposed to later in childhood, have more robust growth in brain structures associated with learning, memory and stress response than children with less supportive moms, according to research at Washington University School of Medicine in St. Louis.

Released: 13-Apr-2016 2:05 PM EDT
Cracking the Code of the Malaria Parasite May Help Stop Transmission
Penn State Materials Research Institute

A multi-university research team has used advanced imaging and computational modelling to understand how the malaria parasite transforms its structure to reproduce and transmit the disease to humans.

Released: 11-Apr-2016 1:05 PM EDT
Breakthrough Improves Chances Tissue Grafts Will Survive and Thrive
American Technion Society

An international team of researchers has determined that matching the structure of engineered blood vessels to the structure of the host tissues at the site of implantation greatly improves the chances that grafted tissues will survive and thrive.

Released: 7-Apr-2016 9:00 AM EDT
Cornell-Swiss Study Reveals Protein with Power to Improve Heart Function
Cornell University

Cornell researchers, working in collaboration with scientists in Switzerland, have identified a strong connection between a protein, SIRT5, and healthy heart function. SIRT5 has the ability to remove a harmful protein modification known as lysine succinylation, which robs the heart of its ability to burn fatty acids efficiently to generate the energy needed for pumping.

Released: 7-Apr-2016 9:00 AM EDT
Cornell-Swiss Study Reveals Protein with Power to Improve Heart Function
Cornell University

Cornell researchers, working in collaboration with scientists in Switzerland, have identified a strong connection between a protein, SIRT5, and healthy heart function. SIRT5 has the ability to remove a harmful protein modification known as lysine succinylation, which robs the heart of its ability to burn fatty acids efficiently to generate the energy needed for pumping.

Released: 5-Apr-2016 3:05 PM EDT
Is Risk-Taking Behavior Contagious?
California Institute of Technology

Why do we sometimes decide to take risks and other times choose to play it safe? In a new study, Caltech researchers explored the neural mechanisms of one possible explanation: a contagion effect.

Released: 5-Apr-2016 3:05 PM EDT
Cold Mountain Streams Offer Climate Refuge: Future Holds Hope for Biodiversity
US Geological Survey (USGS)

A new study offers hope for cold-water species in the face of climate change. The study, published today in the Proceedings of the National Academy of Sciences, addresses a longstanding paradox between predictions of widespread extinctions of cold-water species and a general lack of evidence for those extinctions despite decades of recent climate change.

31-Mar-2016 9:00 AM EDT
Research Reveals ‘Topsy Turvy’ Ocean Circulation on Distant Planets
University of East Anglia

The salt levels of oceans on distant Earth-like planets could have a major effect on their climates – according to new research from the Centre for Ocean and Atmospheric Sciences at the University of East Anglia.

4-Apr-2016 6:05 AM EDT
Coral Reefs Highlight the Key Role of Existing Biodiversity for Climate Change Adaptation
University of Southampton

New research on coral reefs suggests that existing biodiversity will be essential for the successful adaptation of ecosystems to climate change.

Released: 30-Mar-2016 3:05 PM EDT
Gene Blocking Lettuce Germination Also Regulates Flowering Time
University of California, Davis

The endangered southern resident killer whales of Puget Sound could soon get their own personal health records following a meeting of wildlife health experts being held March 28-29 in Seattle.

Released: 29-Mar-2016 4:05 PM EDT
Holistic Data Analysis and Modeling Poised to Transform Protein X-ray Crystallography
Los Alamos National Laboratory

A new 3-D modeling and data-extraction technique is about to transform the field of X-ray crystallography, with potential benefits for both the pharmaceutical industry and structural biology.



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