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Science News Archive December 2013 - Page 25


Page 25 of 27

Neurofeedback tunes key brain networks, improving subjective well-being in PTSD

Researchers at Western University found that neurofeedback training can alter key brain networks linked to post-traumatic stress disorder (PTSD), leading to improved subjective well-being. The study used a combination of EEG and fMRI techniques to measure changes in brain activity and connectivity after a 30-minute neurofeedback session.

SourceUniversity of Western Ontario·JournalActa Psychiatrica Scandinavica·DateDec 3, 2013

New thermoelectronic generator

Researchers have developed a highly efficient thermoelectronic generator that can convert heat and solar energy into electricity without mechanical parts. The new design solves the space-charge problem, achieving efficiencies of up to 40%, paving the way for potential commercial applications in the renewable energy sector.

SourceAmerican Institute of Physics·JournalJournal of Renewable and Sustainable Energy·DateDec 3, 2013

Remembrances of things past

A team of scientists at Berkeley Lab has developed a new material that exhibits the highest shape-memory effect ever recorded in an oxide material. This breakthrough discovery opens up exciting possibilities for future nanoelectromechanical devices and other state-of-the-art nanosystems.

SourceDOE/Lawrence Berkeley National Laboratory·JournalNature Communications·DateDec 3, 2013

Disability, distress in RA patients cut in half over last 20 years

Researchers found that anxiety, depressed mood, and physical disability among RA patients decreased by half over the past two decades. Improved treatment options, including early therapy intervention and biologics, have led to reduced disease activity and better daily living for these patients.

SourceWiley·JournalArthritis Care & Research·DateDec 3, 2013

Understanding hearing

Researchers at TUM developed a computer model of acoustic coding in the inner ear and neuronal information processing by the brain stem, allowing for improved coding strategies and faster testing of new devices. This advancement has the potential to significantly reduce development cycles and provide better hearing outcomes for patients.

Salk scientists crack riddle of important drug target

Researchers at the Salk Institute created a new approach to determine the structure of key cellular receptors using artificial amino acids, revealing crucial details about their binding pockets. This breakthrough could aid in designing drugs that target diseases such as diabetes and osteoporosis.

SourceSalk Institute·JournalCell·DateDec 2, 2013

Increased risk for cardiac ischemia in patients with PTSD

A new study published in Biological Psychiatry found that patients with PTSD are at higher risk of cardiac ischemia, with no correlation to other cardiovascular risk factors. Researchers detected elevated rates of myocardial ischemia in 17% of participants with PTSD, highlighting the need for tailored treatments.

SourceElsevier·JournalBiological Psychiatry·DateDec 2, 2013

Genetic mutation may play key role in risk of lethal prostate cancer in overweight patients

A new study found that men with a specific genetic mutation are more than 50% likely to die from prostate cancer if they're overweight or obese. The researchers analyzed data on 1,243 participants and discovered that obesity was linked to higher levels of insulin and growth factor receptors in tumors containing the mutation.

SourceHarvard T.H. Chan School of Public Health·JournalJNCI Journal of the National Cancer Institute·DateDec 2, 2013

JCI early table of contents for Dec. 2, 2013

Researchers identified a distinct Treg cell population expressing ICOS that predicts better clinical outcomes in melanoma patients treated with high-dose IL-2 therapy. A SOD1 pharmacological inhibitor reduced tumor growth in mice, suggesting inhibition of antioxidants as a viable chemotherapeutic option.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateDec 2, 2013

When aluminum outshines gold

Researchers at Rice University have discovered aluminum's valuable plasmonic properties, which make it suitable for harvesting solar energy and creating large-area optical devices. The study also found that aluminum exhibits quantum mechanical effects stronger than gold in certain nanomatryushka structures.

SourceRice University·JournalACS Nano·DateDec 2, 2013

Scientists discover that short-term energy deficits increase factors related to muscle degradation

A new study reveals that a high-protein diet can help preserve muscle mass during weight loss by slowing the ubiquitin proteasome system, which is primarily responsible for degrading skeletal muscle. Researchers found that adequate protein intake can minimize muscle loss during weight loss efforts.

Messy children make better learners

Researchers found that toddlers who interacted with food in a high chair learned words for nonsolid objects more effectively due to familiarity with the setting. The study showed that changes in environment and exploration help children acquire early vocabulary, linked to better later cognitive development.

SourceUniversity of Iowa·JournalDevelopmental Science·DateDec 2, 2013

Burmese python genome reveals extreme adaptation

The Burmese python genome study found large numbers of rapidly evolved genes linked to extreme characteristics such as rapid increases in metabolism and organ growth after feeding. The researchers discovered that snakes have undergone incredible changes at all levels of their biology, including physiological and molecular changes.

SourceUniversity of Colorado Anschutz Medical Campus·JournalProceedings of the National Academy of Sciences·DateDec 2, 2013

A living desert underground

Researchers at the University of Arizona have discovered a surprisingly diverse ecosystem of microbes living in the perpetual darkness of Kartchner Caverns, a limestone cave system. The microbes thrive on limited nutrients, including nitrogen-containing compounds, and can even harness energy from minerals dissolved in rock fissures.

Forget the needle consider the haystack

Computer scientists at Princeton University have developed a method that allows researchers to identify quickly the connections between seemingly disparate groups in large collections of information. By using a mathematical method to calculate the likelihood of a pattern repeating throughout a subset of data, the tool can cut dramatica...

SourcePrinceton University, Engineering School·JournalProceedings of the National Academy of Sciences·DateDec 2, 2013

Energy drinks plus alcohol pose a public health threat

A new study by University of Michigan researchers found that mixing energy drinks with alcohol leads to heavier drinking and more severe alcohol-related issues. The study, published in the Journal of Adolescent Health, analyzed data from over 650 college students and suggests that the combination may lead to 'wide awake drunk' situations.

SourceUniversity of Michigan·JournalJournal of Adolescent Health·DateDec 2, 2013

Oxygen levels increase and decrease the effectiveness of anti-inflammatory therapies

Researchers found that oxygen levels alter the effectiveness of anti-inflammatory glucocorticoid drugs in neutrophil lifespans. This discovery may help tailor anti-inflammatory agents to specific diseases, improving treatment outcomes for patients with severe asthma, COPD, and other inflammatory conditions.

SourceFederation of American Societies for Experimental Biology·JournalJournal of Leukocyte Biology·DateDec 2, 2013

Annals of Internal Medicine tip sheet for Dec. 3, 2013 -- 'Overweight and healthy' is a myth

The American College of Physicians recommends that individuals with heart disease should only receive red blood cell transfusions if they have severe anemia. Additionally, researchers found that the concept of 'healthy and overweight' is a myth, as individuals in the same BMI category can have varied metabolic features. The study's fin...

SourceAmerican College of Physicians·JournalAnnals of Internal Medicine·DateDec 2, 2013

Microplastics make marine worms sick

Research by Plymouth University and the University of Exeter found that microplastic ingestion can decrease energy reserves in marine worms. The study also revealed that ingested plastic can deliver harmful chemicals to organisms, leading to reduced health. This has significant implications for the food chain and marine ecosystems.

SourceCell Press·JournalCurrent Biology·DateDec 2, 2013

Brain connectivity study reveals striking differences between men and women

A Penn Medicine brain imaging study found greater neural connectivity from front to back and within one hemisphere in males, while females displayed greater connectivity between the left and right hemispheres. This difference may explain why men excel at single-tasking and women are better at multitasking and social cognition.

SourceUniversity of Pennsylvania School of Medicine·JournalProceedings of the National Academy of Sciences·DateDec 2, 2013

Rice U. study: It's not easy 'being green'

A new Rice University study explores the complex relationship between self-evaluations and supportive behaviors towards environmental issues. Researchers found that individuals who experience mixed self-evaluations, including both positive self-assets and negative self-doubt, tend to exhibit less extensive issue-supportive behavior.

SourceRice University·JournalAcademy of Management Journal·DateDec 2, 2013

Researchers revise Darwin's thinking on invasive species

A new model suggests that characteristics like phenotype and interaction mechanisms are key to understanding the chances of an invasive species succeeding. The study challenges Darwin's original theory on naturalization conundrum, indicating that ecological relationships alone are a weak predictor of invader success.

SourceWashington State University·JournalProceedings of the National Academy of Sciences·DateDec 2, 2013