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Science News for September 30, 2014


New learning mechanism for individual nerve cells

Researchers at Lund University have discovered a new learning mechanism in individual nerve cells, which enables the brain to time its reactions and control complex processes like blinking and intelligible speech. This discovery has significant implications for rehabilitation following stroke, autism, ADHD, and language problems.

SourceLund University·JournalProceedings of the National Academy of Sciences·DateSep 30, 2014

How dinosaur arms turned into bird wings

Researchers have made a breakthrough in understanding how birds evolved from dinosaurs by studying fossil and developmental data, revealing the fusion of two bones to form a semilunate bone. The study clarifies the identity of wrist bones in both groups, shedding light on the evolutionary reversal of a lost bone.

SourcePLOS·JournalPLOS Biology·DateSep 30, 2014

Taking thin films to the extreme

Harvard University researchers demonstrate ability to paint ultra-thin coatings onto rough surfaces using thin-film interference, enabling lightweight decorative logos on spacecraft. The technology also holds promise for making flexible electronic devices and advanced solar cells.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateSep 30, 2014

Risky metabolism

A study by Max-Planck Institute found that great tits' risk-taking behaviour correlates with both metabolic rate and ambient temperature. Birds with high metabolic rates and low temperatures were more likely to approach predators.

SourceMax-Planck-Gesellschaft·JournalFunctional Ecology·DateSep 30, 2014

Depression increasing across the country

A study by San Diego State University professor Jean M. Twenge found that Americans now report more psychosomatic symptoms of depression than their counterparts in the 1980s. These symptoms include trouble sleeping, concentration difficulties, memory problems, feeling overwhelmed, restless sleep, poor appetite, and lack of motivation.

SourceSan Diego State University·JournalSocial Indicators Research·DateSep 30, 2014

New diagnostic approach for autism in Tanzania

Researchers at Brown University created a culturally compatible diagnostic approach for autism in Tanzanian children. The approach uses a collection of instruments adapted from established tools, including the Childhood Autism Rating Scale-Second Edition (CARS-2) and Malawi Development Assessment Tool.

SourceBrown University·JournalIntellectual and Developmental Disabilities·DateSep 30, 2014

Targeted treatment could halt womb cancer growth

Researchers have found a targeted treatment, afatinib, that can stop the growth of aggressive womb cancer cells and shrink tumours. The drug targets faults in the HER2 gene, which lie at the heart of the cancer cells, offering new hope for patients with this rare but deadly form of cancer.

SourceCancer Research UK·JournalBritish Journal of Cancer·DateSep 30, 2014

Americans undergo colonoscopies too often, study finds

A recent study published in the Journal of General Internal Medicine found that healthy Americans who undergo colonoscopies do so too frequently, with many receiving repeat screenings long before they should. The study suggests that endoscopists should adhere to national guidelines more closely.

SourceSpringer·JournalJournal of General Internal Medicine·DateSep 30, 2014

Diuretics in proton pump inhibitor-associated hypomagnesemia

Long-term PPI use is associated with a higher risk of severe hypomagnesemia, particularly among patients receiving diuretics. Researchers estimate that one excess hospitalization for hypomagnesemia may occur among 76,591 outpatients during the first three months of PPI treatment.

SourcePLOS·JournalPLOS Medicine·DateSep 30, 2014

On the trail of the truffle flavor

Researchers found that soil bacteria produce volatile compounds that make up part of the distinctive truffle smell. The study, published in Environmental Microbiology, sheds light on how symbiosis between fungi and microorganisms benefits both partners.

SourceGoethe University Frankfurt·JournalEnvironmental Microbiology·DateSep 30, 2014

Study shows how chimpanzees share skills

Researchers tracked the spread of novel tool-use behaviors among Sonso chimpanzees, demonstrating that wild chimpanzees learn and adopt new skills from each other. The study provides strong evidence for social transmission and cultural diversity in wild chimpanzee communities.

SourcePLOS·JournalPLOS Biology·DateSep 30, 2014

Expect 6,000 more Australian deaths if pollution rises to 'safe' threshold

A study by Queensland University of Technology found that increasing pollution levels just below the current 'safe' standards would cause an estimated 6,000 extra deaths annually in Australia. The health statistician calls for thorough cost-benefit analyses to inform decision-making on new infrastructure projects.

SourceQueensland University of Technology·JournalAustralian and New Zealand Journal of Public Health·DateSep 30, 2014

Genetic test would help 'cut bowel cancer spread'

A genetic test for Lynch Syndrome could help reduce the risk of bowel, womb, and ovarian cancers in families. The test would identify individuals who are at higher risk and provide them with risk-reducing measures such as more intensive surveillance to spot recurrences and new cancers early.

SourceCardiff University·JournalHealth Technology Assessment·DateSep 30, 2014

BioMed Central to publish open-access journal in collaboration with the University of Michigan

BioMed Central partners with the University of Michigan to launch an open-access journal focused on clinical research surrounding diabetes and endocrine diseases. The new journal aims to promote better care for patients by sharing new knowledge, both research and clinical, on various aspects of endocrine disorders.

SourceBMC (BioMed Central)·JournalClinical Diabetes and Endocrinology·DateSep 30, 2014

New discovery approach accelerates identification of potential cancer treatments

Researchers at the University of Michigan have developed a new approach to discovering potential cancer treatments, replicating the native environment of cancer cells. They identified an antibody, 4C3, that stops breast cancer tumor growth in animal models and are investigating its potential as a treatment for human patients.

SourceUniversity of Michigan·JournalProceedings of the National Academy of Sciences·DateSep 30, 2014

Developing countries should enroll medical and nursing students from rural areas

A new study suggests that targeted admission of medical and nursing students from rural areas could provide a solution to the current Ebola outbreak in western Africa. The study found that students from rural areas are more likely to want to pursue rural careers, making them ideal candidates for recruitment.

SourceBulletin of the World Health Organization·JournalBulletin of the World Health Organization·DateSep 30, 2014

The cultural side of science communication

A new Northwestern University study highlights the importance of considering cultural differences in science communication, finding that media often reflects cultural orientations and assumptions. The research reveals that Native Americans tend to see themselves as part of nature, while European-Americans view humans as apart from it.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateSep 30, 2014

The Lancet Diabetes & Endocrinology: Genetic study casts further doubt that vitamin D prevents the development of type 2 diabetes

A large genetic study has found no evidence of a causal link between vitamin D levels and the development of type 2 diabetes. The study, conducted by scientists at the University of Cambridge, examined the genes that control blood levels of vitamin D and found no association with the risk of developing type 2 diabetes.

SourceThe Lancet·JournalThe Lancet Diabetes & Endocrinology·DateSep 30, 2014

High-speed drug screen

Researchers use zebrafish and rodents to identify efficient RNA delivery vehicles, a major breakthrough in disease treatment development. The technology enables the rapid testing of hundreds of drug-delivery systems, overcoming a significant bottleneck in biotech research.

SourceMassachusetts Institute of Technology·JournalIntegrative Biology·DateSep 30, 2014

This week from AGU: Measuring Antarctic ice loss, Indian Ocean program, Oregon landslides

Researchers used fiber-optic cables to measure Antarctic ice loss in real-time, with potential implications for global sea levels. In another study, scientists explored the Indian Ocean's legacy and future research efforts. Meanwhile, Oregon landslides were found to be more susceptible to catastrophic failure during earthquakes.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateSep 30, 2014

Rehospitalization in younger patients

A large cohort study found that younger patients (18-64) have higher readmission rates for heart failure than older adults, but lower rates for myocardial infarction and pneumonia. After adjusting for confounding factors, the study suggests a post-hospital syndrome in both age groups, with similar timing and reasons for readmission

SourcePLOS·JournalPLOS Medicine·DateSep 30, 2014

Pollution linked to lethal sea turtle tumors

A new study published in PeerJ found that pollution in urban and farm runoff in Hawaii causes tumors in endangered sea turtles. The researchers discovered that high levels of nitrogen in the runoff promote the formation of tumors on the animals' eyes, flippers, and internal organs.

SourceDuke University·JournalPeerJ·DateSep 30, 2014

Expect 6,000 more Australian deaths if pollution rises to 'safe' threshold

A QUT expert warns Australian governments that increasing pollution to just below existing standards would cause thousands of additional deaths each year. The health statistician's analysis reveals the devastating impact of pollution on human life, highlighting the need for thorough cost-benefit analyses in environmental studies.

SourceQueensland University of Technology·JournalAustralian and New Zealand Journal of Public Health·DateSep 30, 2014

New blood test determines whether you have or are likely to get cancer

Researchers developed a new blood test called the lymphocyte genome sensitivity (LGS) test, which can detect some cancers earlier than ever before. The test analyzes white blood cells exposed to UVA light and measures their DNA damage, allowing for early cancer detection and identifying those at risk of developing cancer.