Add BrightSurf on Google Email

Science News for March 25, 2013


Developing our sense of smell

Researchers at Caltech have found that neural-crest stem cells differentiate into microvillous neurons, which sense pheromones, and are distinct from ciliated neurons that detect volatile scents. The discovery sheds light on how olfactory neurons form and may lead to new treatments for conditions like anosmia.

Lymphatic vasculature: A cholesterol removal system

Researchers have found that the lymphatic system is crucial for removing cholesterol from peripheral tissues, including artery walls. The study suggests that therapies supporting lymphatic transport could enhance cholesterol clearance and potentially treat atherosclerotic vascular disease.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 25, 2013

Urban vegetation deters crime in Philadelphia

A Temple University study found that well-maintained urban vegetation can lower crime rates, particularly for robberies and assaults, by encouraging social interaction and community supervision. The presence of grass, trees, and shrubs is associated with reduced crime rates in Philadelphia.

SourceTemple University·JournalLandscape and Urban Planning·DateMar 25, 2013

Harvard's Wyss Institute awarded DARPA contract to further advance sepsis therapeutic device

The Wyss Institute has received a $9.25 million contract from DARPA to advance its sepsis therapeutic device, which uses magnetic nanobeads to cleanse the blood of pathogens without removing human cells or fluids. The technology has shown promise in treating deadly bloodstream infections that kill critically ill patients and soldiers.

Sequencing tracks animal-to-human transmission of bacterial pathogens

Whole genome sequencing reveals that drug-resistant bacterial infections can be transmitted from animals to humans, highlighting the role of livestock as a potential reservoir of antibiotic-resistant bacteria. The study confirms animal-to-human transmission of MRSA, a disease-causing bacterium with resistance to methicillin.

SourceEMBO·JournalEMBO Molecular Medicine·DateMar 25, 2013

Relieving chronic pain

Researchers developed a new device called Human Spinal Cord Modulation System (HSCMS) to deliver therapeutic stimulation in a more targeted way. The device is designed to be in direct contact with the spinal cord, providing improved pain relief for patients with chronic pain.

SourceAmerican Institute of Physics·JournalJournal of Applied Physics·DateMar 25, 2013

Businesses increase revenue with social media

A new study by Aalto University and Texas A&M University found that customers who engage with businesses on social media contribute 5.6% more revenue than those who don't. The research also identified key factors for success, including user-friendly sites, regular updates, and personalized messages.

SourceAalto University·JournalInformation Systems Research·DateMar 25, 2013

Wang's technology may answer host of medical questions

Researchers have developed a new technology called photoacoustic flowoxigraphy that allows for the measurement of oxygen in individual red blood cells in real-time. This breakthrough could lead to a better understanding of oxygen delivery to normal and diseased tissues, as well as how different disease therapies impact oxygen levels.

SourceWashington University in St. Louis·JournalProceedings of the National Academy of Sciences·DateMar 25, 2013

JCI early table of contents for March 25, 2013

Researchers characterized SUDEP in a mouse model of DS, finding that treatment with drugs reducing parasympathetic activity reduced incidence. Lymphatic vasculature also plays crucial role in cholesterol removal from arteries, with impaired lymphatic growth leading to increased cholesterol retention. A new therapeutic target is identif...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMar 25, 2013

Laser empties atoms from the inside out

Researchers at the University of York and Joint Institute for High Temperatures used a petawatt laser to remove deeply bound electrons from atoms, creating a distinctive plasma state. The experiment aims to further understanding of fusion energy generation, which employs hotter plasmas than the Sun.

SourceUniversity of York·JournalPhysical Review Letters·DateMar 25, 2013

Measuring the magnetism of antimatter

A team of Harvard scientists has successfully measured the magnetic charge of single particles of matter and antimatter, achieving a significant increase in accuracy for antiprotons. This breakthrough could provide new insights into the nature of matter and help address fundamental questions about the universe.

SourceHarvard University·JournalPhysical Review Letters·DateMar 25, 2013

Women make better decisions than men

A survey of over 600 board directors found that women are more likely to consider the rights of others and take a cooperative approach to decision-making. This results in better performance for their companies, with women-led boards experiencing higher returns on equity and lower rates of bankruptcy.

SourceMcMaster University·JournalInternational Journal of Business Governance and Ethics·DateMar 25, 2013

New study suggests that same-sex parents are judged more harshly than heterosexual parents

A new study by Binghamton University researchers found that gay parents are judged more negatively than straight parents when displaying the same negative parenting behaviors. The study suggests that this prejudice can add stress to the already challenging job of parenthood and limit opportunities for adoption or foster care.

SourceBinghamton University·JournalJournal of GLBT Family Studies·DateMar 25, 2013

Michigan hospitals national leaders in preventing common and costly urinary tract infections

A new study by the University of Michigan found that Michigan hospitals have significantly lower rates of catheter-associated urinary tract infections (UTIs) compared to other US hospitals. The study, which used a low-tech approach to timely removal of urinary catheters, resulted in a 25% decrease in UTI rates at Michigan hospitals.

SourceMichigan Medicine - University of Michigan·JournalJAMA Internal Medicine·DateMar 25, 2013

UW researchers discover the brain origins of variation in pathological anxiety

Researchers from UW-Madison School of Medicine and Public Health discovered a core circuit responsible for the variability in symptoms shown by patients with severe anxiety. The study identified two distinct brain circuits: one shared among all anxious individuals and another specific to particular symptoms.

SourceUniversity of Wisconsin-Madison·JournalProceedings of the National Academy of Sciences·DateMar 25, 2013

Hybrid ribbons a gift for powerful batteries

Researchers at Rice University have developed a new material that accelerates the development of high-power lithium-ion batteries suitable for electric cars. The hybrid ribbons of vanadium oxide and graphene work well for lithium-ion storage, providing both high energy density and significant power density.

SourceRice University·JournalNano Letters·DateMar 25, 2013

Reversing blood and freshening it up

Researchers have successfully rejuvenated the blood of mice by reprogramming their stem cells, reversing epigenetic changes that occur with age. This breakthrough could potentially lead to new treatments for diseases such as leukemia, where cancer often originates in older, damaged bone marrow.

SourceLund University·JournalBlood·DateMar 25, 2013

Feeling sick makes us less social online too

A new study from Brigham Young University finds that only 10% of internet users post reviews and 15% comment, question or share health information on social media. The researchers believe more collective wisdom from the crowd could improve health-related discussions online.

SourceBrigham Young University·JournalJournal of Medical Internet Research·DateMar 25, 2013

Ultra-precision positioning

Researchers developed a novel rotary actuator that delivers more torque than previous devices, achieving four-fold improvements in loading torque and accuracy. The device uses piezoelectric material and a clamp with a changeable clamping radius to optimize power and control.

SourceAmerican Institute of Physics·JournalReview of Scientific Instruments·DateMar 25, 2013

A paradox for young docs: New work-hour restrictions may increase, not decrease, errors

A recent study of over 2,300 first-year residents found that the percentage of self-reported medical errors increased after new work-hour restrictions took effect in 2011. The researchers suggest that the reduction in work hours led to a decrease in 'down time' and an increase in communication gaps, contributing to the rise in errors.

SourceMichigan Medicine - University of Michigan·JournalJAMA Internal Medicine·DateMar 25, 2013

You don't 'own' your own genes

A recent study reveals that 41% of the human genome is covered by longer DNA patents, which could lead to a loss of individual genomic liberty. The study also found that short sequences from patents cover virtually the entire genome, even outside of genes.

SourceWeill Cornell Medicine·JournalGenome Medicine·DateMar 25, 2013

Using fluctuating wind power

Researchers propose a new strategy to optimize power-generation efficiency in fluctuating wind conditions by predicting maximum turbine generation capacity and incorporating various factors. The approach shows promise in improving power-generation efficiency, but further refinement is needed based on local conditions.

SourceAmerican Institute of Physics·JournalJournal of Renewable and Sustainable Energy·DateMar 25, 2013

Psychology study shows distance plays key role in gun control arguments

A new psychology study from the University of Texas at Austin suggests that public officials located out of state from their constituents are more likely to gain approval by framing their arguments around the abstract rather than specific incidents. This prompts people to consider the larger picture, according to researchers.

SourceUniversity of Texas at Austin·JournalPersonality and Social Psychology Bulletin·DateMar 25, 2013

What a bunch of dodos!

Research by the Zoological Society of London found that over 4,000 years ago, tropical Pacific Islands experienced a catastrophic mass extinction of birds, with around 1,300 species disappearing. The loss was largely due to overhunting and deforestation caused by human arrival.

SourceZoological Society of London·JournalProceedings of the National Academy of Sciences·DateMar 25, 2013

Decoding the genetic history of the Texas longhorn

A study by University of Texas at Austin researchers reveals that Texas Longhorns are direct descendants of cattle brought over by Columbus in 1493, with an 85% taurine genome from the Middle East. The breed's genetic diversity is partially responsible for their resilience to harsh climatic conditions.

SourceUniversity of Texas at Austin·JournalProceedings of the National Academy of Sciences·DateMar 25, 2013

Compounds found that alter cell signaling, could lead to new breast cancer treatments

Researchers from Scripps Research Institute have identified a class of compounds that can modify cell signaling activity, including anti-inflammatory effects, which could lead to innovative treatments for breast cancer. The study focuses on compounds interacting with the estrogen receptor-α, a key target in breast cancer treatment.

SourceScripps Research Institute·JournalNature Chemical Biology·DateMar 25, 2013

'Metascreen' forms ultra-thin invisibility cloak

Scientists have created a metascreen cloak that can hide objects from microwaves, providing optimal functionality at specific frequencies and bandwidths. The researchers predict the technique's conformability and robustness will enable cloaking of oddly shaped objects.

SourceIOP Publishing·JournalNew Journal of Physics·DateMar 25, 2013

Nouns before verbs?

A new Northwestern University study reveals that infants acquire both nouns and verbs in a more nuanced way than previously thought. The research suggests that the ability to map nouns to objects is robust across languages, but verb mapping is more variable and influenced by linguistic context.

SourceNorthwestern University·JournalChild Development Perspectives·DateMar 25, 2013

How school report cards can backfire

New research from Michigan State University finds that publicizing performance data for K-12 schools can lead to decreased parent satisfaction and erosion of trust in the schools. The study suggests that clear and easy-to-understand grading systems are crucial, rather than constantly changing them for policy or political purposes.

SourceMichigan State University·JournalEducational Policy·DateMar 25, 2013

How common is 'The John Next Door'?

A new study by Dr. Christine Milrod and Dr. Martin A. Monto found that only about 14% of men have ever paid for sex, and those who do are not particularly different from the general population. The researchers also discovered that arrested customers are more likely to be married, working full-time, and sexually liberal than non-customers.

SourceSAGE·JournalInternational Journal of Offender Therapy and Comparative Criminology·DateMar 25, 2013

Artifacts shed light on social networks of the past

A study of over 800,000 painted ceramic and 4,800 obsidian artifacts reveals dramatic changes in social networks over a 250-year period in the late pre-Hispanic Southwest. Researchers found that people maintained surprisingly long-distance relationships despite physical distances, using walking as their only mode of transportation.

SourceUniversity of Arizona·JournalProceedings of the National Academy of Sciences·DateMar 25, 2013