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Science News for March 4, 2015


Cell powerhouse sequencing technology provides deeper look at inherited disease risk

A new sequencing technology called Mseek provides a deeper understanding of how genes in mitochondria influence inherited diseases such as diabetes, heart disease, and cancer. By accurately identifying heteroplasmy in mtDNA, researchers can better explain individual risks and potentially develop new therapeutic targets.

An alternative to medical marijuana for pain?

Researchers discover cannabinoid CB2 agonist AM1710 suppresses chemotherapy-induced pain in mice without tolerance or withdrawal symptoms. The therapeutic effect of AM1710 is preserved even after repeated dosing and blocking CB1 receptors produces no signs of withdrawal.

SourceElsevier·JournalBiological Psychiatry·DateMar 4, 2015

Family interventions reduce smoking rates in children and adolescents

A global review found family-based programs can effectively stop children from taking up smoking, with high-intensity interventions showing the most promising results. The programs encourage parents to set limits, strengthen nurturing skills, and discuss substances with their adolescents, helping them resist peer pressure.

SourceQueensland University of Technology·JournalCochrane Database of Systematic Reviews·DateMar 4, 2015

Strength in numbers

Quantum physicists at the University of California - Santa Barbara have developed a quantum circuitry system that self-checks for errors and suppresses them, preserving qubits' state(s) and imbuing the system with reliability. The system uses the surface code scheme to detect errors based on parity information.

L.A. story: Cleaner air, healthier kids

A 20-year study found that improved air quality in Southern California led to significant gains in lung function development among millennial children. Lung growth accelerated as air pollution declined, resulting in lower rates of abnormally low lung function and reduced risks of respiratory disease.

SourceUniversity of Southern California·JournalNew England Journal of Medicine·DateMar 4, 2015

Defined by your possessions? How loving parents unintentionally foster materialism in their children

A new study in the Journal of Consumer Research found that children who receive more material rewards from their parents grow up to be more materialistic as adults. This can occur even when loving and supportive parents intend to steer their children away from relying on material possessions for happiness or self-worth.

SourceUniversity of Chicago Press Journals·JournalJournal of Consumer Research·DateMar 4, 2015

How big data can be used to understand major events

Academics from the University of Bristol's Intelligent Systems Laboratory used big data to analyze mass media coverage of the 2012 US presidential election. The study found that the media focused more frequently on positive statements about the Democrats, while the Republicans were often portrayed in a negative light. Key issues covere...

SourceUniversity of Bristol·JournalBig Data & Society·DateMar 4, 2015

Manipulating cells' shapes could treat breast cancer

A study by the Institute of Cancer Research found that breast cancer cells with a 'mesenchymal-like' shape are more sensitive to inflammatory signals, which could be harnessed to treat cancer. The researchers used robotic microscopy and automated algorithms to measure the shape of hundreds of thousands of different breast cancer cells.

SourceInstitute of Cancer Research·JournalMolecular Systems Biology·DateMar 4, 2015

Wild yaks -- shaggy barometers of climate change

A new study reveals that climate change is affecting male and female yaks differently, with females shifting to steeper terrain in search of snow for milk production. The research team analyzed historical data and recent observations to find that females are 20 times more likely to be found near snow patches than males.

SourceWildlife Conservation Society·JournalScientific Reports·DateMar 4, 2015

New research could lead to more efficient electrical energy storage

Researchers at Lawrence Livermore National Laboratory have identified changes in the structure and bonding of graphitic carbon electrodes that may improve the capacity and efficiency of electrical energy storage systems. The new X-ray adsorption spectroscopy capability provided key information on how the structure and bonding evolve du...

SourceDOE/Lawrence Livermore National Laboratory·JournalAdvanced Materials·DateMar 4, 2015

Gout may lessen chances of developing Alzheimer's disease

A study published in Annals of the Rheumatic Diseases found that people with a history of gout have a 24% lower risk of developing Alzheimer's disease. The researchers analyzed data from over 3.7 million people and found this protective effect, possibly due to uric acid's antioxidant properties.

SourceBMJ Group·JournalAnnals of the Rheumatic Diseases·DateMar 4, 2015

Twitter chatter predicts health insurance marketplace enrollment, Penn study shows

A study by researchers at the University of Pennsylvania School of Medicine found a significant correlation between Twitter sentiment and health insurance marketplace enrollment. The analysis of 977,303 tweets revealed that a 0.10 increase in positive sentiment was associated with a 9% increase in enrollment.

SourceUniversity of Pennsylvania School of Medicine·JournalJournal of Medical Internet Research·DateMar 4, 2015

Research uncovers basis for cadmium toxicity

A University of Adelaide research team has discovered that cadmium causes toxicity by disrupting the transport of essential metals like manganese and zinc into and out of cells. The study also sheds light on how disease-causing bacteria scavenge metals during infection, paving the way for new strategies to prevent cadmium poisoning.

SourceUniversity of Adelaide·JournalNature Communications·DateMar 4, 2015

Breakthrough in nonlinear optics research

Researchers at the University of Sydney developed a method to selectively enhance or inhibit optical nonlinearities in photonic chips, which can be useful for both hindering and helping signal processing applications. This breakthrough uses a grating structure on chip scale devices to control optical nonlinearity.

SourceUniversity of Sydney·JournalNature Communications·DateMar 4, 2015

Where you live could mean 'greener' alternatives do more harm than good

A new study proposes a decision-making threshold for electrification, which can increase or lower carbon emissions depending on the region's electricity production. Regions with high-carbon electricity production, such as China and Australia, may actually experience increased emissions when transitioning to electric-powered technologie...

Mental health soon after war-zone concussions predicts disability

Researchers found that early post-traumatic stress symptoms are the strongest predictors of later disability in military personnel with mild brain injuries. A study evaluated 38 patients with mild blast-related brain injury and 34 controls, showing that mental health assessments soon after injury were more predictive of long-term disab...

SourceWashU Medicine·JournalBrain·DateMar 4, 2015

Galactic 'rain' could be key to star formation

A team of astronomers has found that galactic 'rain' may be the key to understanding why some galaxies are more productive at creating stars than others. The researchers analyzed X-rays from over 200 galaxy clusters using NASA's Chandra X-ray Observatory and discovered that massive black holes can slow down gas that helps form stars.

SourceMichigan State University·JournalNature·DateMar 4, 2015

History holds valuable lessons in the war on drugs

This groundbreaking research sheds light on the complex origins of drug policies that have inspired murderous violence in Mexico and the US. By examining the history of drugs in Latin America, researchers offer new perspectives on how societies have dealt with drugs and their cultural significance.

SourceUniversity of Cincinnati·JournalHispanic American Historical Review·DateMar 4, 2015

Often-ignored glucose value in routine blood tests correlates with risk of type 2 diabetes

A study from UT Southwestern Medical Center found that a single elevated random blood glucose value is a strong risk factor for diabetes. Individuals with values above 100 mg/dL were up to 30 times more likely to have undiagnosed diabetes, highlighting the importance of considering these often-overlooked values.

SourceUT Southwestern Medical Center·JournalJournal of Endocrinology and Metabolism·DateMar 4, 2015