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Science News Archive December 2019 - Page 4


Page 4 of 36

For CRISPR, tweaking DNA fragments before inserting yields highest efficiency rates yet

Researchers at the University of Illinois have developed a new technique to increase CRISPR-Cas9 efficiency, achieving up to five times higher rates of inserting genes into human cells. This breakthrough has significant implications for clinical gene-therapy applications and basic biological research.

A fast and inexpensive device to capture and identify viruses

A fast and inexpensive device to capture and identify various strains of virus has been developed by researchers at Penn State and New York University. The VIRRION device uses arrays of nanotubes engineered to be comparable in size to a wide range of viruses, enabling rapid detection through Raman spectroscopy.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateDec 23, 2019

The birds and the bees and the bearded dragons

A new analytical method has been developed to address the limitations of estimating evolutionary history of various sex-determination systems. The method, based on male mutation bias, reveals that some species share an XY system for several million years before it is lost, as recently as 20-60 million years ago in some lineages.

Gone fishin' -- for proteins

Researchers used a new microscopic 'fishing' technique to snag thousands of proteins key to the cell skeleton. The team identified hundreds of individual proteins with yet-to-be-defined roles, including a protein called SLK that forges the link between RhoA and ERM.

SourceUniversity of Montreal·JournalNature Cell Biology·DateDec 23, 2019

New treatment Strategy may thwart deadly brain tumors

Researchers at Massachusetts General Hospital and the University of Florida have identified a promising strategy to make glioblastoma susceptible to immune checkpoint inhibitors. The approach targets chemokine receptors that allow myeloid-derived suppressor cells to infiltrate tumors, leading to immunosuppression and treatment resistance.

SourceMassachusetts General Hospital·JournalProceedings of the National Academy of Sciences·DateDec 23, 2019

Electronics at the speed of light

Researchers at the University of Konstanz have successfully controlled ultrafast motion of electrons in a metallic nanocircuit using light manipulation. The new method could speed up electronic switching in devices, enabling faster processing and higher performance.

SourceUniversity of Konstanz·JournalNature Physics·DateDec 23, 2019

Science snapshots from Berkeley Lab

Researchers at Berkeley Lab have made significant strides in developing a novel cancer drug that targets KRAS gene mutations, as well as chelating heavy metals with artificial proteins. Additionally, scientists have discovered a natural mechanism in human tooth enamel that prevents cracks from forming, allowing teeth to last a lifetime.

Time-to-death of Roman emperors followed distinct pattern

A statistical analysis of Roman emperors' deaths reveals a distinct pattern, with high risk in the first year and a bathtub-like curve indicating stabilization by the eighth year. The study suggests underlying processes governing the length of each rule until death, similar to reliability engineering.

SourceSpringer·JournalPalgrave Communications·DateDec 22, 2019

Body cells spy out bacteria

Researchers discovered that the human body uses a receptor to detect bacterial quorum sensing molecules, enabling it to react to differing stages of an infection. This allows the body to save energy by not reacting prematurely and prevents collateral damage caused by the immune system's response.

SourceMax-Planck-Gesellschaft·JournalScience·DateDec 20, 2019

sphingotec's endothelial function biomarker bio-ADM® predicts need for organ support in general ICU patient population

A new study published by sphingotec demonstrates that biomarker bio-ADM identifies high-risk patients for septic shock and those requiring immediate life-saving therapeutic intervention. Elevated bio-ADM levels are associated with prolonged ICU stays, fatal outcomes, and distortions in endothelial function.

Sourcesphingotec GmbH·JournalCritical Care Medicine·DateDec 20, 2019

Prospective memory key to performance of everyday life activities in multiple sclerosis

Researchers identified deficits in prospective memory as factors affecting performance of everyday life activities in individuals with multiple sclerosis. Time-based tasks showed poorer performance compared to event-based tasks, and were associated with executive function deficits and lower motor scores.

SourceKessler Foundation·JournalJournal of the International Neuropsychological Society·DateDec 20, 2019

Artificial intelligence as behavioral analyst

Researchers used high-speed cameras and computer algorithms to analyze the movements of larval zebrafish, identifying three distinct components of their prey capture behavior: orientation, approach, and capture. The study provides new insights into how the brain generates complex behaviors.

SourceMax-Planck-Gesellschaft·JournalCurrent Biology·DateDec 20, 2019

Freestanding emergency departments may increase out-of-pocket spending for patients

A new study suggests freestanding emergency departments can lead to increased health-care costs and out-of-pocket spending for patients. Researchers analyzed insurance claims data from four states and found that entry of a freestanding emergency department was associated with a 3.6% increase in estimated out-of-pocket payments for emer...

SourceUniversity of Arizona Health Sciences·JournalAcademic Emergency Medicine·DateDec 20, 2019